April 2024
The relationship between admission immunoglobulin levels with the severity of the COVID-19 disease
Zeynep Ergenc 1, Hasan Ergenc 1, Ahmet Öztürk 2, Tezcan Kaya 3, Ahmet Nalbant 3, Cengiz Karacaer 3, Mustafa Usanmaz 4, İbrahim Hakkı Tör 5, Ersin Alkılınç 6, Gülsüm Kaya 7, Özlem Karaca Ocak 8, Özgür İnce 9
1 Department of Internal Medicine, Yalova State Hospital, Yalova, 2 Department of Emergency Medicine, Çorum Erol Olçok Training and Research Hospital, Çorum, 3 Department of Internal Medicine, Sakarya University Research and Education Hospital, Sakarya, 4 Department of Infectious Diseases and Clinical Microbiology, Gazi Government Hospital, Samsun, 5 Department of Anesthesiology and Reanimation, University of Health Sciences, Erzurum, 6 Department of Pulmonology, Sinop Atatürk State Hospital, Sinop, 7 Department of Quality Management, Sakarya University Research and Education Hospital, Sakarya, 8 Department of General Surgeon, Medicana International Hospital, Samsun, 9 Department of Pulmonology, Medicana International Hospital, Samsun, Turkey
DOI: 10.4328/ACAM.21731 Received: 2023-04-17 Accepted: 2023-06-05 Published Online: 2024-02-22 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):221-224
Corresponding Author: Hasan Ergenç, Department of Internal Medicine, Yalova State Hospital, Yalova, Turkey. E-mail: hasanergenc.dr@gmail.com P: +90 505 740 01 68 Corresponding Author ORCID ID: https://orcid.org/0000-0003-0519-0264
This study was approved by the Ethics Committee of Private Medicana Samsun Hospital (Date: 2021-12-09, No: 7157)
Aim: The aim of this study is to investigate relationship between immunoglobin (Ig) levels and severity of COVID-19 disease.
Material and Methods: The study was carried out at Ayancık State Hospital. Ethics committee approval was obtained before starting the study. Patients who applied to Ayancık State Hospital between 2021-2022 and were diagnosed with COVID-19 over the age of 19 were included in the study. Data on demographic and laboratory parameters of patients were obtained from hospital information system records. Patient files with additional information were not included in the study. Demographic data, laboratory parameters and immunoglobulin levels of patients with severe and mild COVID-19 disease were compared.
Results: Of the patients diagnosed with COVID-19 included in the study, 28 (43.8%) were male and 36 (56.3%) were female. When the patients were evaluated according to age group, 44 (68.8%) were <65 years old and 20 (31.3%) were >65 years old. There was no significant difference between the severity of COVID-19 disease and the distribution of patients by gender and age group (respectively, p=0.208; p=0.059. There was a statistically significant difference in IgA, IgG, and IgM measurements between those with mild and severe disease (Respectively, p=0.001, p=0.001, p=0.011). IgA (2.33), IgG (12.19) and IgM (1.31) measurements were higher in those with mild COVID-19 disease.
Discussion: The results showed that immunoglobulin indices were significantly lower in patients with severe COVID-19. Therefore, the lack of immunoglobulin can be considered an indicator of the severity of the disease and the potential poor outcome of the disease.
Keywords: COVID-19, Immunoglobulin, IgA, IgG, IgM
Introduction
SARS-CoV-2 is the viral agent of the acute respiratory disease COVID-19 and one of the new members of the coronavirus family. This virus has been called COVID-19 by the World Health
Organization [1]. The COVID-19 virus has rod-shaped structures called spikes on its surface. The spikes are made of protein and glycoprotein and are placed on their surface after passing through the lipid membrane of the virus. The spikes are the virus’s main factor in attaching to human lung cells and entering them. There are other protein compounds in the structure of the membrane, shell, and covering of genetic material of COVID-19 viruses [2]. The type and structure of these compounds, called antigens, lead to the stimulation of the human immune system.
Antigens of the SARS-CoV-2 virus are the main targets of the immune system response of infected people to destroy the virus and fight against it [3].
Between 25 and 50 percent of people infected with COVID-19 may never develop symptoms, and some may only develop a mild illness [4]. Serology tests will be able to identify these individuals and help researchers better assess the mortality rate from this disease. The production of antibodies in the blood increases and becomes detectable after a person is infected with infectious agents. In addition, over time, the type of antibodies also changes and passes from one type to another [5]. Identification and reporting of cases of COVID-19 are mainly based on polymerase chain reaction (PCR) testing for people with clinical symptoms who go to clinics for treatment. However, one of the methods of estimating the actual cases of infection is serological tests because asymptomatic infections cannot be detected in routine tests based on clinical symptoms, and people who do not have clinical symptoms probably cannot be identified and reported [6].
From a clinical point of view, the Ig antibody measurement generally indicates a person’s immune status against pathogens [7]. Due to its low price, easy access, short duration of testing, convenient sampling, and no need for highly specialized laboratory equipment, this test is a standard method for early diagnosis and checking the history of people infected with the SARS-CoV-2 virus [8]. In this study, we aimed to investigate the relationship between admission Ig levels with the severity of the COVID-19 disease.
Material and Methods
The study was carried out at Ayancık State Hospital. Ethics committee approval was obtained before starting the study Patients over the age of 18 who applied to Ayancık.
State Hospital between 2021-2022 and were diagnosed with COVID-19 were included in the study. Information on demographic and laboratory examinations of patients and information on COVID-19 disease were obtained from hospital information system records. Patients with missing file records were excluded from the study. The day of the first symptoms was accepted as the day of onset of the disease and the diagnosis of acute respiratory distress syndrome (ARDS) was made according to the Berlin 2012 definition. Demographic data and laboratory parameters of patients separated according to mild and severe COVID-19 disease clinic were evaluated comparatively. Frequency and (n(%)) statistics were given for categorical (qualitative) variables, mean, standard deviation (mean±sd), minimum, maximum and median (Max-Min (M)) statistics were given for numerical (quantitative) variables. Evaluation was made with statistical tests according to the structure of the variables. First, it was checked whether the quantitative variables fit the normal distribution. The means were evaluated according to the results of the normal distribution. Ig measurements showed normal distribution. Square test was used to determine the relationship between disease severity and grouped variables. Differences in Ig measurements according to disease severity and demographic characteristics (sex, age) were analyzed by independent groups t-test. ROC analysis was used for the predictive levels and probabilities of the cut-off values of the variables of the determined Ig measurements. The data were analyzed in the SPSS 21 program and the significance level was taken as 0.05.
Ethical Approval
This study was approved by the Ethics Committee of Private Medicana Samsun Hospital (Date: 2021-12-09, No: 7157)
Results
Of the patients diagnosed with COVID-19 included in the study, 28 (43.8%) were male and 36 (56.3%) were female. When the patients were evaluated according to age group, 44 (68.8%) were <65 years old and 20 (31.3%) were >65 years old. There was no significant difference between the severity of COVID-19 disease and the distribution of patients by gender and age group (Respectively; p=0.208; p=0.059; Table 1). There was a significant difference between IgA, IgG ve IgM levels according to COVID-19 disease severity (Respectively, p=0.001, p=0.001, p=0.011, Figure 1). The comparison of immunoglobulin levels according to the gender and age group of the patients and the severity of the COVID-19 disease is shown in Table 1. The results of the ROC analysis performed to examine the ability of Ig values to predict disease severity are shown in Table 2. It was determined that IgA, IgG and IgM measurements made a statistically significant difference in estimating the severity of COVID-19 disease (respectively, p=0.013, p=0.004, p=0.004, Table II). The specificity and sensitivity of these values are given in Figure 2. Estimation and detection probabilities of Ig measurements, which have a significant level of estimation of the disease level according to the ROC analysis results, according to the cut-off values, are given in Table 3. IgA was highest in those with severe disease. The relationship between disease severity and Ig measurement levels according to cutoff values is shown in Table 3. While there was no statistically significant relationship between disease severity and IgG and IgM levels (p=0.078; p=0.129), there was a significant difference between IgA and disease severity (p=0.040) (Table 3). It was determined that most of the COVID-19 patients with severe disease (60.9%) had IgA below the threshold.
Discussion
Some studies show that measuring and checking immunoglobulin levels can help clinicians screen those prone to worsening symptoms in the early stages of the disease [5,9]. In the present study, we investigated the role of Imnuglobin indices in predicting the worsening of symptoms of COVID-19 patients. Our results showed that IgA, IgG, and IgM have significant differences between the two groups of severe and mild disease and are significantly lower in patients with more severe symptoms. These findings are consistent with the results of previous studies [10, 11]. Also, in our study, IgA had the highest ability to predict the exacerbation of symptoms in patients. Some similar studies have found the highest predictability in IgM [12, 13] and others in IgA [14, 15]. It seems that the difference in the demographic characteristics of the participants can explain this inconsistency. However, the results of these studies were consistent with the significant difference in immunoglobulin levels between patients with severe and mild disease. Studies show that immunoglobulin levels allow clinicians to diagnose patients with a poor prognosis at an early stage [12-15]. Due to the lack of treatment methods for COVID-19, immunoglobulin-based treatments can be a potential and available option [13, 15]. In our study, from a total of 64 patients with COVID-19, immunoglobulin was significantly lower in patients with severe disease than in patients with mild disease. Piechotta et al. [16] evaluated the prevalence of humoral immunodeficiency in patients with COVID-19. The results of this study showed a 29% IgG deficiency, 33% IgA deficiency, and 22% IgM deficiency in COVID-19 patients. Based on the results of this study and other similar studies [17, 18], the prevalence of immunoglobulin disorders in patients with COVID-19 is relatively high. Considering that screening for immunodeficiency in patients with COVID-19 has benefits such as response to immunoglobulin replacement [14], shortening of hospital stay 815], and improvement of clinical symptoms [16] and there may be more serious long-term side effects such as chronic lung disease that can be prevented and treated by timely detection, immunological evaluation, especially humoral immunity [17], is suggested in patients with COVID-19, especially in severe cases.
One of the limitations of this study is the small sample size and lack of examination of the history of immunoglobulin deficiency in patients. Also, all the participants in this study had been referred to a treatment center. Future studies can be conducted with a larger sample size, examining patients’ history of immunoglobulin deficiency and data from several treatment centers.
Conclusion
This study investigated the role of immunoglobulin indices in predicting the severe symptoms of COVID-19. The results showed that the immunoglobulin indices were significantly lower in patients with severe COVID-19. Therefore, the lack of immunoglobulin can be considered an indicator of the severity of the disease and the potential poor outcome of the disease. More studies are needed to investigate the role of IVIg in the treatment of COVID-19.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
None of the authors received any type of financial support that could be considered potential conflict of interest regarding the manuscript or its submission.
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4. Galeotti C, Kaveri SV, Bayry J. Intravenous immunoglobulin immunotherapy for coronavirus disease-19 (COVID-19). Clin Transl Immunology. 2020;9(10):e1198.
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6. Gonzalez JLB, Gámez MG, Enciso EAM, Maldonado RJE, Palacios DH, Campos SD, et al. Efficacy and safety of convalescent plasma and intravenous immunoglobulin in critically ill COVID-19 patients. A controlled clinical trial. Medrxiv. 2021;03:1-23.
7. Hagin D, Freund T, Navon M, Halperin T, Adir D, Marom R, et al. Immunogenicity of Pfizer-BioNTech COVID-19 vaccine in patients with inborn errors of immunity. J Allergy Clin Immunol. 2021;148(3):739-49.
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11. Marcos-Jiménez A, Sánchez-Alonso S, Alcaraz-Serna A, Esparcia L, López-Sanz C, Sampedro-Núñez M, et al. Deregulated cellular circuits driving immunoglobulins and complement consumption associate with the severity of COVID-19 patients. Eur J Immunol. 2021;51(3):634-47.
12. Muccioli L, Pensato U, Bernabè G, Ferri L, Tappatà M, Volpi L, et al. Intravenous immunoglobulin therapy in COVID-19-related encephalopathy. J Neurol. 2021;268(8):2671-5.
13. Norman M, Gilboa T, Ogata AF, Maley AM, Cohen L, Busch EL, et al. Ultrasensitive high-resolution profiling of early seroconversion in patients with COVID-19. Nat Biomed Eng. 2020;4(12):1180-7.
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15. Petrović T, Alves I, Bugada D, Pascual J, Vučković F, Skelin A, et al. Composition of the immunoglobulin G glycome associates with the severity of COVID-19. Glycobiology. 2021;31(4):372-7.
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17. Pourahmad R, Moazzami B, Rezaei N. Efficacy of Plasmapheresis and Immunoglobulin Replacement Therapy (IVIG) on Patients with COVID-19. SN Compr Clin Med. 2020;2(9):1407-11.
Download attachments: 10.4328.ACAM.21731
Zeynep Ergenc, Hasan Ergenc, Ahmet Öztürk, Tezcan Kaya, Ahmet Nalbant, Cengiz Karacaer, Mustafa Usanmaz, İbrahim Hakkı Tör, Ersin Alkılınç, Gülsüm Kaya, Özlem Karaca Ocak, Özgür İnce. The relationship between admission immunoglobulin levels with the severity of the COVID-19 disease. Ann Clin Anal Med 2024;15(4):221-224
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This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of the license, visit https://creativecommons.org/licenses/by-nc/4.0/
A year follow-up prospective post-stroke epilepsy study
Christiyan Naydenov
Department of Neurology, Faculty of Medicine, Trakia University, Stara Zagora, Bulgaria
DOI: 10.4328/ACAM.21876 Received: 2023-08-16 Accepted: 2024-02-23 Published Online: 2024-03-14 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):225-227
Corresponding Author: Department of Neurology, Faculty of Medicine, Trakia University, 6000, Stara Zagora, Bulgaria. E-mail: kristiyan.naydenov@trakia-uni.bg P: +359 988 89 01 08 Corresponding Author ORCID ID: https://orcid.org/0000-0001-6082-4376
This study was approved by the Ethics Committee of Trakia University (Date: 2020-01-02, No: 14)
Aim: Post-stroke epilepsy (PSE) is a common complication of stroke that can have a significant impact on the quality of life of stroke survivors.
Material and Methods: This cohort study included 15 patients with targeted sampling strategy and collected data using the National Institutes of Health Stroke Scale (NIHSS) scale, laboratory tests, and electroencephalography (EEG). The follow-up period was assessed on the second day and on the first year after stroke. Ethics and informed consent were followed in accordance with regulatory requirements.
Results: Fifteen patients showed onset abnormal EEG results ranging from 8 to 20 NIHSS scores and no significant laboratory deviations on the second day of stroke onset. Levetiracetam (LEV) was administered to these 15 patients, and none of them developed PSE until one year of follow-up.
Discussion: This study suggests that abnormal EEG results on the second day after stroke may be a useful predictor of the risk of developing PSE. Furthermore, administration of LEV to patients with abnormal EEG results may be an effective prophylactic treatment to prevent the development of PSE. Clinicians should consider performing EEGs on the second day after stroke in order to identify patients at high risk of developing PSE. The current results may lead to better screening and prevention of PSE among stroke survivors. If treatment starts prior to the clinical picture of PSE, the outcome is going to be better.
Keywords: Post-Stroke Epilepsy, Electroencephalography, Levetiracetam
Introduction
PSE refers to the development of epilepsy after a stroke. It is a common complication of stroke, affecting around 10% of the patients. PSE can have a significant impact on the quality of life. Despite its prevalence, much is still unknown about PSE, including its risk factors, underlying mechanisms, and optimal management strategies. The aim of the study is to investigate the use of EEG in predicting the risk of developing PSE and to evaluate the effectiveness of LEV as a prophylactic treatment to prevent the development of PSE in patients with abnormal EEG results. PSE occurs due to the disruption of the normal neuronal network and circuits in the brain caused by a stroke. The exact mechanisms of PSE are not fully understood, but it is believed that several factors contribute to the development of PSE, including the location and size of the stroke and the severity of the stroke. Other factors such as death of inhibitory neurons can be a possible reason for the excitation of neuron clusters and subsequent epileptic discharging. Inhibitory neurons play a crucial role in regulating the excitability of neuronal networks in the brain. They release inhibitory neurotransmitters that dampen the activity of surrounding neurons and prevent them from firing excessively. When inhibitory neurons die or are damaged as a result of a stroke, this can lead to an imbalance in the neuronal network, with an increase in excitation and a decrease in inhibition. This can cause the remaining neurons to become hyperexcitable and more prone to firing in a synchronized and repetitive manner, leading to epileptic discharging and the development of PSE. In addition to the loss of inhibitory neurons, other factors such as the formation of scar tissue and abnormal sprouting of new neuronal connections may also contribute to the development of PSE. Diagnosing PSE can be challenging, as seizures may not occur immediately after a stroke and may be mistaken for other conditions. Understanding the mechanisms underlying PSE can provide valuable insights into normal functioning of the brain.
Material and Methods
Study Design: This study employed a prospective cohort study design to investigate the outcomes of PSE in a sample of stroke survivors with a one-year follow-up period.
Participants: The inclusion criteria were patients aged 18 years and older who had a stroke and were able to provide informed consent, and who had abnormal EEG. The exclusion criteria were patients with a history of epilepsy or seizures before the stroke, those with other neurological or psychiatric disorders, and those who were unable to provide informed consent.
Data Collection: Data were collected at two time points: during the second day after the stroke onset and one year later at the end of the follow-up period. At each time point, data were collected using the NIHSS, laboratory tests, and EEG recordings. The NIHSS was used to assess the severity of the stroke and to identify any neurological deficits or complications. Laboratory tests were conducted to measure biomarkers that may be associated with the development of PSE, including inflammatory markers. EEG recordings were obtained to assess for any abnormalities in brain wave activity that may be indicative of epilepsy.
Toolkit. EEG with 31-channel digital EEG/EP device Neuron Spectrum-64, with sampling frequency: 1000 Hz.
Limitations: This study has some limitations, including small sample size, single-center design, and the limited follow-up period. Additionally, the study may be subject to selection bias, as only patients who were able to provide informed consent were included. Finally, the EEG recordings of stroke patients may not capture all instances of epileptic activity, and additional monitoring methods may be needed to provide a more comprehensive understanding of PSE.
Ethical Approval
This study was conducted in accordance with the principles of the Declaration of Helsinki. All participants provided informed consent prior the enrollment. This study was approved by the Ethics Committee of Trakia University (Date: 2020-01-02, No: 14)
Results
Fifteen patients were enrolled in the study and followed up for one year. The patients were men/women = 7/8 with age from 41 to 88 (average of 67). All of them had abnormal EEG results on the second day after stroke, and their NIHSS scores ranged from 8 to 20. None of these 15 patients had significant laboratory deviations. The treatment protocol included the administration of LEV. During the one-year follow-up period, the incidence of PSE in the entire cohort was 0% (Figure 1). These results suggest that the presence of abnormal EEG results on the second day after stroke may be a useful predictor of the risk of developing PSE and proper inclusion criteria for LEV treatment. Administration of LEV to these patients may be an effective prophylaxis to prevent the development of PSE.
Discussion
The results of this study suggest that the presence of abnormal EEG results on the second day after stroke may be a useful predictor of the risk of developing PSE. Administration of LEV to patients with abnormal EEG results may be an effective prophylactic treatment to prevent the development of PSE. These findings are consistent with previous studies that have shown the value of EEG in predicting the development of PSE [1, 2]. The current study also found that none of the enrolled patients who received LEV developed PSE during the one-year follow-up period. This result is consistent with previous studies that have shown the efficacy of LEV in preventing PSE [3, 4]. However, further studies with larger sample sizes are needed to confirm these findings. The incidence of PSE in this study was 0%, which is not consistent with previous studies that have reported incidence rates ranging from 5% to 20% [5, 6], but all patients were screened by EEG, enrolled and treated before occurring the seizure. This means that if the treatment starts prior to the clinical picture of PSE, the outcome is going to be better. One limitation of our study is the small sample size, which may limit the generalizability of our findings. Another limitation is the limited follow-up period of one year, as PSE can develop years after the initial stroke [7]. Additionally, the sample was selected with a targeted strategy, which may introduce selection bias.
Conclusions
In conclusion, the study suggests that clinicians should consider performing EEGs on the second day after stroke in order to identify patients at high risk of developing PSE. For patients with abnormal EEG results, the administration of LEV may be an effective prophylactic treatment to prevent the development of PSE. If the treatment starts prior the clinical picture of PSE, the outcome is going to be better.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
References
1. Bentes C, Martins H, Peralta AR, Morgado C, Casimiro C, Franco AC, et al. Early EEG predicts poststroke epilepsy. Epilepsia Open. 2018;3(2):203-12.
2. Ma S, Fan X, Zhao X, Wang K, Wang H, Yang Y. Risk factors for early-onset seizures after stroke: A systematic review and meta-analysis of 18 observational studies. Brain Behav. 2021;11(6):e02142.
3. Zhang L, Wang C, Li W. A meta-analysis of randomized controlled trials on levetiracetam in the treatment of pediatric patients with epilepsy. Neuropsychiatr Dis Treat. 2018;14:769-79.
4. Jones FJS, Sanches PR, Smith JR, Zafar SF, Blacker D, Hsu J, et al. Seizure prophylaxis after spontaneous intracerebral hemorrhage. JAMA Neurol. 2021;78(9):1128-36.
5. Bladin CF, Alexandrov AV, Bellavance A, Bornstein N, Chambers B, Coté R, et al. Seizures after stroke: A prospective multicenter study. Arch Neurol. 2000;57(11):1617-22.
6. Silverman IE, Restrepo L, Mathews GC. Poststroke seizures. Arch Neurol. 2002;59(2):195-201.
7. Labovitz DL, Hauser WA, Sacco RL. Prevalence and predictors of early seizure and status epilepticus after first stroke. Neurology. 2001;57(2):200-6.
Download attachments: 10.4328.ACAM.21876
Christiyan Naydenov. A year follow-up prospective post-stroke epilepsy study. Ann Clin Anal Med 2024;15(4):225-227
Citations in Google Scholar: Google Scholar
This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of the license, visit https://creativecommons.org/licenses/by-nc/4.0/
Diagnostic parameters for acute appendicitis in pediatric patients with abdominal pain: An analytical interpretation
Y. Doruk Bilgili 1, Duygu Tatlı Uçarcı 2, B. Haluk Güvenç 2
1 Department of Pediatric Surgery, Balıkesir Bandırma Training and Research Hospital, Balıkesir, 2 Department of Pediatric Surgery, Faculty of Medicine, Zonguldak Bulent Ecevit University Health Application and Research Center, Zonguldak, Turkey
DOI: 10.4328/ACAM.21949 Received: 2023-09-07 Accepted: 2024-02-08 Published Online: 2024-02-24 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):228-233
Corresponding Author: Y. Doruk Bilgili, Department of Pediatric Surgery, Balıkesir Bandırma Training and Research Hospital, Balıkesir, Turkey. E-mail: y.doruk.bilgili@gmail.com P: +90 553 322 00 88 Corresponding Author ORCID ID: https://orcid.org/0000-0002-3965-885X
This study was approved by the Ethics Committee of Zonguldak Bülent Ecevit University (Date: 2020-04-29, No: 2020/09)
Aim: Diagnosis of acute appendicitis is a challenging task in children presenting with abdominal pain. We conducted an analytical interpretation of the basic parameters in patients with appendicitis, according to decisive pathologic diagnosis.
Material and Methods: We analyzed the clinical files of 12126 patients with abdominal pain and included a sum of 1066 hospitalized patients suggestive of acute abdomen. We accomplished a statistical evaluation of variables as physical examination, symptoms, laboratory findings and ultrasound screening.
Results: Histopathological analysis of 657 appendectomies revealed negative appendectomy in 12.3% and complicated appendicitis in 15% (perforated 6.7%). There was no statistical difference in terms of pyrexia and CRP between negative appendectomy and acute appendicitis. WBC count, neutrophil count, and neutrophil lymphocyte rate showed a statistically significant difference (p<0.001) amongst histopathologic groups. ROC analysis revealed AUC (cut-off) values as 0.62 (≥14500), 0.769 (≥9.6), 0.689 (≥4.89) respectively. US revealed 65% sensitivity and 50% specificity rate with 90% of positive predictive value, along with 17% negative predictive value. Secondary findings as presence of peri-appendiceal fluid collection and mesenteric heterogeneity revealed 93.4% and 94.3% sensitivity consecutively.
Discussion: We found WBC count, neutrophil count, neutrophil lymphocyte rate, presence of peri-appendiceal fluid and mesenteric heterogeneity in ultrasound
screening as highly predictive in differential diagnosis.
Keywords: Acute Abdomen, Appendicitis, Appendix Histopathology, Abdominal Pain, Ultrasonography, Scoring Algorithms
Introduction
Appendicitis is one of the most common surgical causes of acute abdominal pain in pediatric patients [1, 2]. The clinical picture of appendicitis has long been regarded as equivalent to inevitable death historically, posing one of the greatest fears of the humankind [3]. The overall lifetime risk is estimated to be around 8%, with an age peak during the teen years [4].
Acute appendicitis in children may mimic atypical and non-specific abdominal symptoms, and this entity may explain the 20-50% increased incidence of perforation within the pediatric age group [5]. Laboratory serological investigations are less invasive and routinely performed on most children with abdominal pain presenting to emergency [6]. These tests are known to be non-specific for appendicitis but have been reported to achieve a high discriminatory power when combined with clinical history and physical examination [6]. Today, contemporary research is vastly focused on physiopathology, imaging studies, digital data analysis, scoring algorithms and environmental or genetics related investigations, aiming to achieve a timely and precise diagnosis [2, 7, 8]. However, researchers are still far from establishing a pathognomonic parameter available as a sole indicator of appendicitis amongst patients presenting with acute abdomen. Obtaining a detailed anamnesis and proper physical examination stands the test of time in diagnostic decision making.
Ultrasound (US) is a fast, and easy excess to conduct, with zero radiation. It is more useful when compared to CT or MRI. According to the American College of Radiology, ultrasound is the best method suited for initially imaging a patient with suspected acute appendicitis [9]. It has, however, inherent limitations due to radiologists’ experience and factors like accumulated bowel gas and body mass index.
In our eight-year retrospective study, we evaluated the data of our patients applying with acute abdomen and analyzed the impact of numerous parameters attributable to diagnostic accuracy while treating appendicitis. We aimed to interpret and compare our results in the light of published scoring algorithms and imaging studies.
Material and Methods
The files of 12126 children under the age of 18, attending emergency services with a complaint of abdominal pain, between 2012 and 2020 were evaluated. Our department was requested to consult a total of 3068 of these patients, out of which 1868 were diagnosed as having urinary tract infection, acute gastroenteritis, and constipation following evaluation by the pediatric surgeon. None of these patients were readmitted later with a similar clinical picture.
The remaining 1200 patients were hospitalized in the pediatric surgical ward with an initial diagnosis of acute abdomen. Amongst these, a total of 134 cases operated for reasons other than appendicitis, and four appendectomy cases without an exact histopathological confirmation were excluded from the study. Of the 1062 cases included in our study; 653 cases who underwent appendectomy were determined as “Group 1”, and 409 cases treated medically and later discharged without surgery as “Group 2”. All patients were divided into four subgroups according to their age: infants-toddlers (0-3), preschoolers (>3-6), primary school students (>6-10) and teenagers (>10-18).
The comparison was based on the clinical history, physical examination findings, laboratory tests and US results between these two groups for which data was available. The physical examination findings of the physician during the initial examination were considered in comparison to the consultant pediatric surgeon’s evaluation process. Thus, we aimed to investigate the reliability of data conducted by primary and secondary care physicians who do not have as much experience as the pediatric surgeon. Routine laboratory parameters with minimal additional cost were verified and analyzed according to histopathology results during the decision-making process of an accurate and timely diagnosis of appendicitis.
Histopathological Classification
The exact histopathological findings of the appendix tissue verified by our Medical Pathology Laboratory were classified as; a.Negative appendectomy (NA) in cases with rich lymphoid follicles in the lamina propria under the luminal surface epithelium and not accompanied by acute and chronic inflammation. b.Acute appendicitis (AA) in cases presenting with neutrophil leukocytes infiltrating the lamina propria, muscularis mucosa, submucosa and muscularis propria starting from the crypt basal of the epithelium. c.Phlegmonous appendicitis (FA) was defined as neutrophil leukocyte infiltration in the appendiceal wall, accompanied by mucosal ulceration and crypt abscess. d.Suppurative appendicitis (SA) in the presence of extensive ulceration, transmural inflammation, and necrosis. Finally, in case of transmural inflammation, necrosis and macroscopic perforation in the lumen, it was reported as perforated appendicitis (PA).
Statistical Analysis
Statistical analysis of the data was performed via IBM SPSS Statistics version 22 program. Categorical variables were compared according to Pearson Chi-Square and Fisher’s Exact tests. Continuous variables were compared with Mann-Whitney U test for two groups. Kruskal Wallis statistical analyzes were used for comparisons between more than two nonparametric groups. ROC analyses were used for calculating the diagnostic impact of laboratory values. P-value of less than 0.05 was considered statistically significant.
Ethical Approval
This study was approved by Ethics Committee of Zonguldak Bülent Ecevit University (Date: 2020-04-29, No: 2020/09).
Results
Appendectomy group encompassed 250 (38.3%) female, and 403 (61.7%) male patients (p=0.002). The incidence of NA in girls (p<0.001), and FA in boys (p=0.018) were significantly higher when compared to other forms. The incidence of appendectomy was statistically higher amongst primary school students and teenagers (p<0.001). There was no statistical difference according to histopathological classification between the age groups (p˃0.05). We did not observe any patients with perforated appendicitis under the age of three. Amongst 653 children operated with suspected appendicitis, 80 (12.3%) were diagnosed as NA, 395 (60.5%) as AA, 80 (12.3%) as FA, 54 (8.3%) as SA and 44 (6.7%) as PA. A number of appendectomies performed during the summer were statistically lesser when compared to other seasons (p=0.005).
Nausea–vomiting (76.8% vs 50.5%, p<0.001), fever (17.9% vs 8.1%, p<0.001), and spontaneous passage of stool (77.1% vs 57.5%, p<0.001) were significantly higher in Group 1. Observation of abdominal tenderness and normal physical examination were surprisingly significantly higher in Group 2 patients (p<0.001). Most of these patients were found to have normal abdominal physical examinations following pediatric surgical consultation. Rebound pain and abdominal guarding, on the other hand, were significantly higher in Group 1. The study demonstrates more common right lower abdominal quadrant tenderness finding in NA and less common rebound pain in AA cases.
White blood cell (WBC) count, C-reactive protein (CRP), neutrophile count, percent of neutrophile, neutrophile lymphocyte ratio (N/L), platelet lymphocyte ratio, and creatinine values were significantly higher in Group 1 (p<0.001). Lymphocyte (p<0.001), platelet count (p<0.003) and urea (p<0.002) values were significantly higher in Group 2. All histopathological groups were statistically different from NA in terms of WBC count, neutrophile count and N/L. In addition, FA, SA, and PA groups were statistically different from AA (p≤0.001) (Table 1). There was no significant difference between CRP levels of NA and AA patients (p>0.05).
The diagnostic values of WBC count, neutrophile and N/L were further investigated using ROC curves (Figure 1).
An US screening was accomplished amongst 800 patients where an appendix was clearly visualized in 50.8%. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for US were defined as 65%, 50%, 90%, and 17% consecutively (Table 2 and Table 3).
Discussion
Abdominal discomfort or pain is quite common in the pediatric age and mostly difficult to decide whether it is surgical in nature or not. Diagnostic accuracy of complicated appendicitis on the contrary is mostly dependable. Exclusion of a probable surgical cause is important since delay in diagnosis may result in catastrophic outcome [10-12]. Main aim must be to obtain a decrease in diagnostic failure and prompt interference to avoid consequences of further clinical complications.
In contrast to numerous clinical causes which may provoke abdominal pain in girls, inflammation of the Appendix vermiformis is more common in boys [13-16]. Our retrospective study revealed a similar outcome with published international data, associating a higher incidence of negative appendicitis (NA) in girls (p<0.001). The reported rate of NA differs widely according to the literature. The reported range is between 1% to 40% in the English, and 1% to 17% in the Turkish literature [17]. With regards to Maloney et al.’s [18] study, this variation is preferable to differences in the definition of appendicitis and NA as reported by the pathology institutions. An extended analysis of our 80 patients diagnosed as NA revealed added the presence of an intraluminal faecaloid in 28, local peritonitis neighboring appendix in two and Enterobius vermicularis in one, as reported by the pathologist. Amongst these 80 patients, 33 were operated within 24 hours of admission. An extended time of observation had no impact in the outcome in majority of these patients. Even though our NA rate is 12.3%, which is well within the expected range, we may speculate that if these specific patients diagnosed as NA were discharged unoperated, may well have presented later with similar clinical picture, due to reported silent intraluminal pathologies. One of the patients was later diagnosed with Chron’s disease and another with Familial Mediterranean Fever during follow-up.
Changes in climate and environmental factors specifically related to summer period are accused of exerting impact on appendicitis by some of the researchers; however, the literature mostly declares a lack of evidence of a specific correlation [16, 17, 19-22]. The incidence of appendicitis is low during summer according to our study.
The encountered peak incidence of AA is between six to 12 years of age according to Zhang et al. [21]. In our study, AA is the most confronted histopathologic subtype regardless of age. On the other hand, FA in boys (p=0.018) is significantly higher when compared to other forms. In Zani et al.’s study group, 32.2% is diagnosed as complicated appendicitis [6]. Aneiros et al. mention presence of an inverse correlation between age and perforated appendicitis (PA) in their report [1]. The incidence of PA under the age of five is reported as 56.5% by Yıldız et al. [19]. Contradictory to published reports we did not encounter PA under the age of three. Owing to an increased awareness due to the higher probability of a grave prognosis and motivation for a preemptive approach, our NA ratio was found as 25% for this age group. Twenty-nine patients out of 44 diagnosed as PA, disclosed late presentation due to parental ignorance. Fourteen referred by remote hospitals were delayed due to misdiagnosis and finally remaining one because of our mismanagement.
During initial examination symptoms such as anorexia, nausea, vomiting, fever, and spontaneous passage of stool are commonly questioned. According to our emergency department’s documentation, the mentioned symptoms were significantly prominent in our appendectomized patients. Anorexia did not pose a significant difference amongst our groups. However, due to a lack of sufficient data regarding most of our cases, we think that an accurate assessment of the situation is unavailable. Patients suffering from habitual constipation quite often present with abdominal pain and must be sought for during differential diagnosis of acute abdomen. A significant difference was found between the two groups with regards to stool output within the last 24 hours and 57.5% of the cases reported absence of passage of stool in Group 2. An extended investigation showed that fever was within normal levels in 82.1% of the appendectomized cases, and AA cases did not have fever. As opposed to PAS and Alvarado scorings, anorexia complaints and fever findings were not statistically significant in our study.
During medical education, the practice of detailed anamnesis followed by specific and careful physical examination is emphasized in patients presenting with abdominal pain. Observation of abdominal tenderness and normal physical examination were surprisingly significantly higher in Group 2 patients (p<0.001). In the meantime, we failed to obtain a significant difference amongst groups 1 and 2 with regards to right lower abdominal quadrant tenderness (Table 1). Most of these patients were found to have normal abdominal physical examinations following pediatric surgical consultation. Data obtained from general practitioners and pediatricians during the initial examination, revealed 15.5% rebound pain and 12.9% abdominal guarding in patients later confirmed as NA. 83.3% of the patients histopathologically confirmed as appendicitis, presented with right lower abdominal quadrant tenderness according to their initial physical examination (Table 2). Rebound pain and abdominal guarding, on the other hand, were significantly higher in Group 1 as conducted by pediatric surgeons (Table 1).
Physical examination indicating “general abdominal stiff tenderness” is envisioned as a reflection of perforation and referred to as “abdominal guarding” in our study. The review of physical findings recorded by general practitioners and pediatricians, however, proved their evaluation to be wrong owing to patients who were later followed without an operation. On the other hand, a histopathologically confirmed appendicitis was present in only 30.8% of these patients following physicians’ examination. Our study emphasizes the importance of performing a systematic physical examination, aiming to exclude diseases that do not require surgical treatment, whilst obtaining proper communication with the child and avoiding initial physical contact from where the pain is originating.
An increase in WBC count is an early marker of inflammation of the appendix, CRP on the other hand, is superior in manifesting possible perforation [23]. Only 1.9% of the patients presenting normal WBC count and CRP levels are diagnosed as AA, according to Monsalve et al.’s [23] study. In our study, an ROC analysis supported a correlation between increased WBC, neutrophile count and N/L values with regard to the clinical picture. Zani et al. [6] confirmed comparable correlation between WBC count, CRP values and clinical picture, but failed to support their results in terms of neutrophile count. According to their study, children with CRP levels lower than 40 mg/L reflected an 80% probability of uncomplicated appendicitis. Mentioned data roughly reflects that such parameters when combined with clinical history and detailed physical examination, significantly increase discrimination in differential diagnosis.
US is preferred as the leading non-invasive, cost-effective, bedside diagnostic tool for acute abdomen, further saving patients from hazardous radiation. Due to Löfvenberg and Salö’s study, US performers’ visualization rates of the appendix illustrated no significant differences [24]. Pediatric radiologists, however, demonstrated a significantly higher sensitivity (88%) in US performance compared to general radiologists (71%). Their US performance disclosed a scale of 47% visualization rate of the appendix, displaying a rate of 82% sensitivity, 97% specificity, 92% PPV and 93% NPV. US screening is mostly accomplished by the registrars in our center, and their performance rate is comparable, displaying a 50.8% rate matching with the literature [24]. The appendix was clearly visualized in 63.5% of the appendectomized patients and 24.6% of those followed conservatively. However, their rate of NPV as low as 17%, demonstrated the limitation of US as a diagnostic tool in excluding appendicitis. This low ratio either reflects the inadequacy of the technique or performers in distinguishing patients within the range of normal appendiceal parameters. We advocate pediatric surgeons’ collaboration with the radiologist in case of diagnostic indecision. Recent studies indicate the importance of evaluating secondary findings [25]. The impact of the mentioned findings is utilized to decrease the need for further advanced visualization methods in patients presenting with low visualization ratios with respect to NPV in otherwise possible presence of appendicitis [25].
Scoring systems and algorithms that are in use such as Alvarado and PAS are accepted as relatively accurate diagnostic tools applicable in patients with abdominal pain. Our study reflected correlative results with respect to PAS concerning vomiting, right lower quadrant tenderness, abdominal tenderness, rebound pain, abdominal guarding, WBC count≥14500/mm3 and neutrophile count≥9.6 mcL. According to our results, loss of appetite, constipation, and laboratory cut off values concerning lymphocyte count<1.8µL, neutrophil percentage≥74%, and N/L≥4.7, and secondary US findings as peri-appendiceal mesenteric echogenic disturbance (94.3% sensitivity), presence of free fluid or collection (93.4% sensitivity) may additionally facilitate decisive diagnosis.
Such algorithms are user-dependent and rely on subjective data calculated by the provider. The system inherits unexpected possible misinterpretation by the user as mentioned above in our data, thus the ability of the scoring systems depends on the clinical judgment of a senior surgeon. Recently, the rapid development of innovative technologies and integration of artificial intelligence, machine learning, and big data, and their wide use in screening, and near-precise diagnostic procedures in diseases are becoming useful tools in various fields of research [12]. They are expected to facilitate quantitative assessment of complex medical cases and help doctors in achieving accurate diagnosis.
Conclucision
Finally, it is imperative that a modest communication followed by appropriate age-specific gentle examination in a child may help reveal most of the underlying cause of abdominal pain. We believe that continuous periodical training sessions of physicians will facilitate cognitive perception of the mentioned scoring algorithm systems.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Evaluation of balance and proprioception in dyslexic children
Asli Oren, Burcu Talu
Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Inonu University, Malatya, Turkey
DOI: 10.4328/ACAM.22022 Received: 2023-10-25 Accepted: 2024-02-19 Published Online: 2024-02-23 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):234-238
Corresponding Author: Burcu Talu, Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Inonu University, 44280, Malatya, Turkey. E-mail: fzt.burcu@hotmail.com P: +90 422 341 02 20 Corresponding Author ORCID ID: https://orcid.org/0000-0002-5623-8291
This study was approved by the Ethics Committee of Inonu University Health Sciences Non-Interventional Clinical Research (Date: 2021-06-15, No: 2021/2077)
Aim: The study aims to evaluate and compare balance and proprioception in dyslexic and typically developing children.
Material and Methods: The study was carried out with 24 children diagnosed with dyslexia and 24 children with typical development between the ages of 8-16. Pediatric Berg Balance Scale (PBBS) and Tandem Walking Test (TWT) were used to evaluate balance ability. Proprioception assessment was evaluated by looking at the joint position sense with a goniometer at the specified angles for the knee and ankle.
Results: There was a significant difference between children with typical development and dyslexia in terms of PBBS scores (p<0.05). In the TWT, there was a significant difference in all arm positions with eyes closed in terms of the number of steps, while a significant difference was found in all arm positions with eyes open and closed in terms of the time spent for each step (p<0.05). In terms of proprioception, a significant difference was found compared to individuals with typical development in only 10° dorsiflexion of the foot (p<0.05).
Discussion: It was observed that balance skills of children with dyslexia were negatively affected compared to children with typical development, no clear inference could be made in terms of proprioception and further studies were needed.
Keywords: Dyslexia, Postural Balance, Cerebellum
Introduction
Dyslexia is a subtype of specific learning disorders and is a learning disability that affects reading comprehension, correct and fluent reading, spelling and writing skills and leads to low academic achievement (1). Functions such as decoding, naming letters, and dividing words into syllables are important for reading comprehension. The phoneme, which is the basis of reading, develops by learning to translate the letters into the sounds they represent (2). It has been reported that the prevalence of dyslexia in school-aged children is 10%, and its general prevalence is between 7-17% in Turkey. Dyslexia is a developmental disorder that significantly affects the education and training system (3, 4). The diagnosis of dyslexia is generally recognized during the literacy process when the child starts school (4). Genetic, neurological and environmental factors play a role in the etiology of learning disorders (5). According to functional imaging studies, It has been observed that the development of left hemisphere connections, which have a role in reading and spelling, is affected (2), and they show biochemical differentiation, especially in the left frontal and temporoparietal areas, but this differs between individuals (6). In addition, it has been shown that the size of the cerebellum may be different in dyslexic individuals, and this may affect not only motor functions but also cognitive functions (7).
There are many theories about the causes of dyslexia, whose symptoms were first described in 1881. Although phonological awareness theory is the most emphasized theory, it is seen as insufficient to explain its causal relationship with dyslexia. According to this theory, in dyslexia, the relationship with sound sequences is disrupted and abilities such as sound recognition, naming letters, and separating words into syllables are affected. Temporal processing deficit theory, which expresses temporal processing disorders in both visual and auditory areas, is present in most individuals with dyslexia (8). According to this theory, the inability to sequence the letters and sounds in the word correctly may be the physiological basis underlying dyslexia (2). According to the cerebellar deficit theory, which mentions poor movement coordination and/or motor control in dyslexic children, this affects balance and motor skills (9).
Frank and Levinson reported for the first time the neurological insufficiency of the balance system originating from the cerebellum in dyslexic children (10). Although the cerebellum is an important center of balance and coordination, it is also very important for cognitive functions. It achieves this function through extensive neural connections with brain regions associated with cognitive functions (7). It has been suggested that the important role of the cerebellum on the vestibular system is also affected in children with dyslexia, and that cognitive functions are affected by learning disabilities. Learning requires the coordinated integration of visual, auditory, motor and language-related areas, and these areas make rich connections with the cerebellum. In addition, the cerebellum has very important roles such as reading speed, intonation, sequencing during speech (11).
Postural balance refers to the ability to control the body’s center of gravity within the support surface. Visual, vestibular and somatosensory inputs are important for postural control quality. The proprioceptive system contributes to balance by providing information about the position of parts of the body (12). In the light of this information, we aimed to evaluate balance control and proprioception, which occur with the interaction of many inputs such as visual, vestibular, somatosensory and cognitive systems, in children with dyslexia and typically developing children.
Material and Methods
Assuming α=0.05 and 1-β (power)=0.80, the incidence of children with developmental dyslexia and dyslexia-plus syndrome in the population is 2% in the power analysis performed before the start of the study (4), it was calculated that 48 individuals, at least 24 individuals in each group, should be included in the study. Power analysis was performed using the publicly available statistical software OpenEpi, version 3 (http://www.openepi.com) to calculate the sample size.
Participants
Our study included children aged between 8 and 16 with dyslexia who were educated at the special education and rehabilitation centers affiliated with the Malatya Provincial Directorate of National Education, and students with typical development. Inclusion criteria for the study; Individuals who did not have vision and hearing problems, did not have a disease that would affect their general health status, and did not use any pharmacological agents were included. Demographic information (name-surname, age, gender, height, weight, BMI) of all children participating in the study was obtained.
Evaluation
In our study, the Pediatric Berg Balance Scale (PBBS) and Tandem Walking Test (TWT) were used to evaluate balance ability. Necessary permission has been obtained for PBBS. The PBBS consists of 14 sections, each scored between 0-4 points, and the maximum score that can be obtained from the scale is 56 (13). In the TWT, which is another balance test we used in our study, each one is performed in positions with the eyes open and closed, arms at the sides, tied at the back and cross-linked on the chest, and the tandem walking time of 10 steps is measured for each gait. In cases where the balance is disturbed and 10 steps cannot be completed, the number of steps he can walk and the duration are recorded. In the comparison of the groups, the time taken for each step was calculated in terms of time when the test was not completed. In our study, proprioception assessment was evaluated by measuring joint position sense with a goniometer. Joint position sense was measured by looking at the ability to actively repeat the previously taught joint angle for the knee and ankle. The measured angle was recorded after the participant actively repeated it. Care was taken to ensure that the measurement environment was quiet and free of distractions. The target angles for the knee joint, which were determined as 45° and 60°, were taught by repeating 2 times before the measurement of each angle value, and then the eyes of the participants were covered with an eye patch. Participants repeated their target angles three times and averaged. For the ankle, the target angles were determined as 10° plantar flexion and 10° dorsiflexion (14-16).
Analysis
Descriptive statistics were presented as mean±standard deviation and frequency. The conformity of the variables to the normal distribution was examined using visual (histogram and probability graphs) and analytical methods (Kolmogorov Smirnow Test). In the statistical significance between two independent groups, independent groups T test was used for the variables that were found to be in normal distribution, and the Mann-Whitney U test was used as the statistical method for the variables that did not fit the normal distribution. Statistical significance level was accepted as p<0.05.
Ethical Approval
This study was approved by the Ethics Committee of Inonu University Health Sciences Non-Interventional Clinical Research (Date: 2021-06-15, No: 2021/2077). Before the study, the families were informed about the study and an informed consent form was signed that they agreed to participate in the study.
Results
A total of 48 children, 24 of whom had typical development (13 boys, 11 girls), and 24 with dyslexia (10 boys, 14 girls) were evaluated within the scope of the study. While 20 of the children with typical development were right dominant and 4 were left dominant; 21 of the children with dyslexia were right dominant and 3 were left dominant. Demographic characteristics of individuals such as age, height, body weight and body mass index (BMI) are shown in the table (Table 1). When individuals were compared in terms of balance scores, a significant difference was found between children with typical development and children with dyslexia in terms of PBBS scores (p<0.05). While there was a significant difference in the number of steps in the TWT in all arm positions with eyes closed, a significant difference was found in the time taken per step in all arm positions with eyes open and closed (p<0.05) (Table 2). When individuals were evaluated in terms of proprioception, although proprioceptive deviation was higher in individuals with dyslexia, a significant difference was found only in 10° dorsiflexion of the foot compared to healthy individuals (p<0.05) (Table 3).
Discussion
As a result of our study, which we aimed to evaluate and compare children with dyslexia and typical development in terms of balance and proprioception; It was found that balance was negatively affected in children with dyslexia, and the number of steps with eyes closed in walking differed compared to children with typical development. In addition, in terms of time, the time spent for each step was higher in children with dyslexia in both eyes open and closed conditions. In terms of proprioception, there was only a difference in the evaluation of 10° ankle dorsi flexion.
When we look at the literature, it is seen that the results of the study vary according to the use of parameters such as age, balance position, eyes open/closed condition, surface type, dual/single task condition, measurement methods and scale (17-19).
There is a prevalence of balance impairment in children and adults with dyslexia. When dyslexic children and adults are compared in terms of balance, it has been stated that balance problems can be detected in approximately 50% of children with dyslexia and in approximately 20% of adults with dyslexia (4). In a study investigating the relationship of balance with age, seven years old dyslexic children and dyslexic adults were compared, and it was seen that the achilles tendon vibration ratio with cognitive task was higher in children with dyslexia (17).
The cerebellum is important in the development of automated skills. Children with dyslexia have difficulties with balance while performing dual tasks or more complex tasks (18). In the study of Bucci et al. on individuals with dyslexia and typical development, the modified Stroop test was applied and the presence of postural instability was determined when the changes in the center of gravity of the individuals with dyslexia on the platform were examined during the test. In a study in which children with dyslexia were able to balance on their right or left feet for 10 seconds, balance losses were examined with the motion tracking system; it has been observed that children with dyslexia are less stable in both positions with eyes open and closed (19). It has been reported that the reason for this is that children with dyslexia due to delayed neuromotor maturation cannot use visual and vestibular inputs appropriately to maintain their balance (20).
Reducing stride length during walking may be a compensatory strategy to maintain balance control. In the study where dyslexic children were compared with the control group in terms of normalized walking speed and stride length; It has been reported that children with dyslexia walk at a faster pace and with shorter steps than the control group. The reason for emphasizing the importance of tests performed by controlling walking speed in this study is that there is no difference between the groups if walking is done at the preferred speed. Because; when dyslexic individuals were instructed to walk very fast, they showed similar cadence compared to the control group, which may explain that they walked at maximum speed with a shorter stride length (21).
According to our evaluation findings, in the tandem walking test; dyslexic children, preferably at walking speed, differed significantly in the number of steps with eyes closed in all arm positions compared to typically developing children. This result shows that the postural oscillations increase and they take fewer steps in the eyes closed position. When we compare the groups in terms of duration in all arm positions; It was found that the time spent for each step was higher in children with dyslexia in both eyes open and closed conditions. This shows that children with dyslexia have more postural control effort than children with typical development.
The term proprioception, which is important in regulating balance and postural control, was first defined as the position of body parts in space, the perception of joint and body movements. Therefore, proprioceptive awareness is needed to maintain body posture and produce smooth and coordinated movements (12).
The joint position is one of the most reliable assessment methods for measuring proprioception. Inclinometer, goniometer and isokinetic devices can be used as evaluation methods. The joint is actively or passively brought to a certain position and the person is asked to find the target angle (12). In a study by Selfe et al., these two conditions were compared and they recommended measurement with active movement because of its similarity to functional activities (22). Active joint motion measurement was also used in our study. The reason why we chose the weightless procedure when measuring was that possible involvement of the plantar sense could cause variation in the amount of deviation in joint position sense.
In our study, when children with dyslexia were evaluated in terms of proprioception, it was observed that proprioceptive deviation was high in knee and ankle joint position sense measurements; significant difference was found compared to typically developing children in only 10° of dorsiflexion of the foot. In a study evaluating proprioception by passive movement speed of the limb, children with dyslexia showed similar values at higher speeds compared to the control group, but showed variable values when the speed slowed down (23). In another study; It has been observed that dyslexic children have higher trunk sway rates on hard and foamy surfaces with their eyes open and closed, and trunk sway is higher in the eyes closed position. It has also been found that children with dyslexia have similar step widths, significantly lower walking speeds, and significantly higher trunk sway speeds compared to healthy controls (24).
It has been suggested that cerebellar activity has an effect on reading performance and arithmetic skills (9). In a study examining the relationship between balance problems and reading speed in children with and without familiare dyslexia risk; it has been reported that there is no direct connection between them, but that the comparison group outperformed the dyslexia group in terms of balance and reading speed (25).
Limitation
The number of samples included in the study can be seen as a limitation of the study due to the limited number of children with dyslexia, but this limitation can be ignored because an appropriate number of individuals were included in the power analysis performed before the study started.
Conclusion
In conclusion, it was found that balance was negatively affected in children with dyslexia compared to children with typical development; It was found that the number of steps with eyes closed in walking differed from those of typically developing children. It was observed that the time spent for each step was higher in children with dyslexia in both eyes open and closed conditions. In terms of proprioception, it was seen that a clear inference could not be made and further studies were needed. Evaluation of children with dyslexia in terms of balance, walking and proprioception compared to children with typical development; We think that it is important in terms of applying appropriate physiotherapy support programs that support their development.
Acknowledgment
Autor Aslı Ören is a 100/2000 The Councill of Higher Education (CoHE) PhD Scholar in Physiotherapy and Rehabilitation subdivision.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Vertebral augmentation by kyphoplasty in osteoporotic vertebral fractures: A clinical experience
Ahmet Gökyar 1, Mustafa Çolak 2
1 Department of Neurosurgery, Faculty of Medicine, Amasya University, Amasya, 2 Department of Neurosurgery, Samsun Bafra State Hospital, Samsun, Turkey
DOI: 10.4328/ACAM.22034 Received: 2023-11-04 Accepted: 2024-02-23 Published Online: 2024-02-26 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):239-244
Corresponding Author: Ahmet Gökyar, Department of Neurosurgery, Faculty of Medicine, Amasya University, Amasya, Turkey. E-mail: drgokyar@gmail.com P: +90 532 465 64 98 Corresponding Author ORCID ID: https://orcid.org/0000-0003-1942-587X
This study was approved by the Ethics Committee of Amasya University (Date: 2023-12-07, No:137-1)
Aim: The clinical characteristics and results of patients who underwent kyphoplasty for osteoporotic fractures in a single center between 2015 and 2023 were examined.
Material and Methods: Patients who underwent balloon kyphoplasty between 2015 and 2023 due to osteoporotic vertebral fractures were assessed. Visual Analog Scale (VAS) was used to evaluate the patients’ pain before and after the clinical operation. In all fractures, local kyphosis angle and vertebral body heights were measured.
Results: A total of 103 osteoporotic vertebra fractures were treated with kyphoplasty. The patients consist of 69 females and 34 males, with a mean age of 71. The average follow-up period lasted for 9.21±8.07 months. When the patients were evaluated functionally, the VAS score, which was 8.674 ± 0.46 pre-operatively, decreased to 3.019 ± 0.99 post-operatively (p<0.001). Post-operative pain relief and satisfaction rate was 65.2%.
The mean local kyphosis angle, which was 19.98˚±0.68 pre-operatively, was found to be 18.07˚±0.56 post-operatively (P<0.001). At the end of an average follow-up period of nine months, it was determined that there was a 1.91˚ improvement in post-operative local kyphosis angle. An average correction of 8.97% was achieved in terms of local kyphosis.
It was observed that an increase of 1.75 mm (8.97%) was achieved in the vertebral body restoration. Cement leakage was observed in five patients (4.85%).
Discussion: We are presenting our findings regarding the application of kyphoplasty to prevent deformity development in cases of severe pain due to osteoporotic vertebral fractures that are unresponsive to medical treatment.
Keywords: Osteoporosis, Osteoporotic Vertebral Fracture, Vertebral Augmentation, Kyphoplasty
Introduction
In the United States, there are approximately 700,000 cases of Osteoporotic Vertebral Compression Fractures (OVCF) each year, which are a common consequence of osteoporosis. Approximately one-third of these cases are symptomatic [1, 2].
The incidence of OVCF is on the rise, primarily due to the increasing human life expectancy and the prevalence of osteoporosis. Osteoporosis is a metabolic disorder characterized by a decrease in bone mineral density, low bone mass, increased bone fragility, deterioration of bone microarchitecture, and ultimately an elevated risk of fractures [3, 4].
While the pain resulting from osteoporotic vertebral compression fractures usually subsides within three months in the majority of patients, it may become chronic due to the deformity of the spine and degeneration in the fracture area [4, 5, 6].
In recent years, percutaneous vertebroplasty and subsequently developed kyphoplasty have emerged as the most common methods for vertebral augmentation in cases of acute vertebral fracture. The primary distinction between vertebroplasty and balloon kyphoplasty, the latter being an advancement of vertebroplasty, is the goal of restoring the vertebral body to its previous height. This minimally invasive technique typically involves the injection of polymethylmethacrylate (PMMA) directly into the vertebral body through the pedicles.
Specifically, this study focuses on the clinical characteristics and outcomes of patients diagnosed with vertebral compression fractures and treated with kyphoplasty for osteoporotic fractures in our department. These findings will be discussed and presented in the context of existing medical literature.
Material and Methods
In this retrospective study, the outcomes of 103 balloon kyphoplasty procedures conducted for osteoporotic vertebral fractures between 2015 and 2023 were assessed. 15 patients underwent kyphoplasty at different time points for fractures at different levels. Among them, 11 patients underwent treatment at two vertebral levels, 3 patients received treatment at three vertebral levels, and 1 patient underwent treatment at four vertebral levels. All treated patients were diagnosed with osteoporosis and their Bone Mineral Density (BMD) value was above T<-2.5 Vertebral fractures secondary to non-osteoporotic causes were excluded from the study. Preoperative radiological evaluations of the cases were made with X-ray, CT, MRI (T1, T2, STIR (Short TI Inversion Recovery) sequence) and postoperative standing lateral and anteroposterior X-ray, CT. Osteoporotic compression fracture types of the patients to whom we performed kyphoplasty were included in the AO fracture classification Magerly Type A 1-2. Visual Analog Scale (VAS) was used to evaluate the patients’ back pain before and after the clinical operation. In all fractures, local kyphosis angle and vertebral body heights were measured in millimeters. Follow-up evaluations were conducted at one, three and twelve months. Control radiographs were taken routinely.
During follow-up appointments, patients were examined to detect any additional fractures. The local kyphosis angle is defined as the angle between a line drawn parallel to the upper end-plate of the vertebra immediately above the fractured vertebra and the lines drawn to the lower end-plate of the vertebra immediately below it. Body height refers to the mid-corpus height as measured on lateral radiographs. The estimated body and anterior wall heights at the fracture level were calculated by averaging the sum of the wall heights of the upper and lower levels. This analysis was conducted for all patients. The procedures were conducted using local anesthesia.
Surgical procedure
Informed consents were obtained from all patients prior to the procedure. Following administration of appropriate anesthesia, the level of the fracture was determined by obtaining anteroposterior and lateral images with C-arm fluoroscopy. All patients underwent balloon kyphoplasty with an unipedicular approach. During the procedure, specimens from the collapsed vertebra were taken for pathological examination. Patients were mobilized within 6 to 24 hours following the operation. Control radiographs were taken routinely. All patients were advised to wear a brace for two weeks following the surgery.
The proportion of liquid and powder components used when preparing polymethylmethacrylate (PMMA) and the waiting time had an impact on the cement’s flowability. This alteration in flowability influenced the distribution of the cement within the fractured spinal body, either positively or negatively.
Statistical Analysis
SPSS 21.0 software package (SPSS, Chicago, IL, USA) was utilized for the statistical analysis of the obtained data. Continuous data were summarized as mean ± standard deviation, while categorical data were presented as counts and percentages. The normal distribution of continuous data was assessed using the Kolmogorov-Smirnov Test and Shapiro-Wilk Test. The comparison between preoperative and postoperative values was carried out using the Paired Samples t-test. The Chi-Square (χ²) test was employed to examine the dependency between categorical variables for intergroup comparisons. A significance level of p<0.05 was considered statistically significant.
Ethical Approval
This study was approved by Ethics Committee of Amasya University (Date: 2023-12-07, No:137-1).
Results
83 patients underwent a total of 103 kyphoplasty procedures at various time intervals. Intra-operative kyphoplasty and vertebral body correction are demonstrated in Figure 1. The distribution of fracture locations by age and gender of the patients is shown in Table 1, the comparison of fracture duration, follow-up period, preoperative pain score, postoperative pain score, preoperative local kyphosis angle, postoperative local vertebral angle, preoperative vertebral height, and postoperative vertebral height based on age (<65 and > 65) is provided in Table 2, and the comparison of preoperative and postoperative pain scores, local vertebral angles, and vertebral body height averages is presented in Table 3. Eleven patients received treatment for two vertebral levels, while three patients were treated for three vertebral levels, and one patient underwent treatment for four vertebral levels. The average time interval between the occurrence of the fracture and the surgery was found to be 33.35 ± 14.50 days. Preoperative VAS scores were 8.674 ± 0.46, preoperative kyphotic angle and vertebral body height were 19.98˚ ± 0.68 and 19.49 ± 0.43 respectively (P<0.001).
An average of 3.05±0.83 ml of cement was used for balloon kyphoplasty. Cement leakage was observed in five patients (4.85%). The VAS score, which was 8.67 ± 0.46 pre-operatively, decreased to 3.01 ± 0.99 post-operatively (p<0.001). Post-operative pain relief and satisfaction rate was 65.2%. The postoperative mean local kyphosis angle and vertebral height were 18.07˚±0.56 and 21.27 ± 0.45 respectively (P<0.001).
It was observed that in two cases the cement was extravasated from the cannula path in the pedicle to the posterior, in two cases the cement was extravasated to the anterior of the vertebra corpus, and in one case it was extravasated to the upper disc space due to the broken end-plate.
No statistically significant association was observed between the vertebral fracture segment and age or gender (P>0.05). However, upon examination of Table 1, it was noted that fractures were more prevalent in individuals aged 65 and over, as well as in females, across all spinal levels. Moreover, the most common fractured levels were L1 and T12 vertebrae, followed by L2 and L3 levels (Table 1).
The distribution of fractures by vertebral segments was as follows: two at T7 (1.9%), five at T8 (4.9%), two at T9 (1.9%), three at T10 (2.9%), six at T11 (5.8%), eighteen at T12 (17.5%), twenty-four at L1 (23.3%), fifteen at L2 (14.6%), fourteen at L3 (13.6%), twelve at L4 (11.7%), and two at L5 (1.9%). The distribution of patients’ gender and fracture segments by age groups is presented in Table 1.
Comparison of fracture duration, follow-up period, preoperative and postoperative pain, local kyphosis angles and vertebral heights according to age is given in Table 2. The preoperative local vertebral angle differed significantly between age groups, with a mean of 19.64 degrees for those below 65 years and 21.18 degrees for those aged 65 or above (P<0.01). The average post-operative angle correction was measured as 16.22 in those under 65 years of age and 18.72 in those over 65 years of age, and it was found to be statistically significant (P<0.05). No statistically significant difference was observed between the averages of those under and over 65 years of age in other variables (P>0.05). When the patients were evaluated functionally, the VAS score, which was 8.67 ± 0.46 pre-operatively, decreased to 3.01 ± 0.99 post-operatively (P<0.001). Post-operative pain relief and satisfaction rate was 65.2%. The average follow-up period lasted for 9 months. The mean local kyphosis angle, which was 19.98˚±0.68 pre-operatively, was found to be 18.07˚±0.56 post-operatively (P<0.001). At the end of an average follow-up period of nine months, it was determined that there was a 1.91˚ improvement in postoperative local kyphosis angle (Table 3). An average correction of 8.97% was achieved in terms of local kyphosis angle.
The preoperative MRI (STIR sequence) of the L1 vertebra fracture, postoperative radiographs and the measurement image of the local kyphosis angle are presented in Figure 2.
It was noted that the height of the posterior wall of the vertebra was within the normal range for all patients. The primary collapse occurred in the middle of the vertebral body and the anterior vertebral wall. When compared to pre-operative values, it was determined that the vertebral body height increased from 19.49 ± 0.43 mm to 21.27 ± 0.45 mm. (P<0.001). It was observed that an increase of 1.75 mm (8.97%) was achieved in the vertebral body restoration.
None of the patients who underwent percutaneous kyphoplasty experienced any neurological or systemic complications. Osteomyelitis and adjacent superficial tissue infection did not develop in any of our cases. No new fracture was observed in the control radiographs.
Discussion
Conservative treatment is often insufficient for many patients. None of these treatment methods are aimed at addressing vertebral deformation, which has been shown to significantly improve overall quality of life, patient mobility, lung function, bone metabolism, and the ability to return to daily life as quickly as possible. It leads to a decrease in functional independence and chronic pain, causing significant morbidity. Additionally, inadequate vertebral height, the sequelae of spinal deformities, decreased mobility, and reduced quality of life emphasize the importance of surgical correction [5,6,7].
Balloon kyphoplasty and vertebroplasty have been found to be beneficial for restoring bone height in chronic back pain resistant to traditional treatments. Vertebral augmentation can at least prevent future vertebral collapse and further deformity. There are valid hopes that its long-term effects may be better than conservative treatment [6]. We evaluated our clinical experience, pain relief, complications added during the follow-up period, and our vertebral correction results in the light of the literature.
In the literature, we mostly see studies comparing the vertebral augmentation process with traditional methods and evaluating the average level of pain relief [7,8,9]. In addition to treating pain, the aim should be to use preventive treatment methods to ensure vertebral restoration as soon as possible and to protect against complications and deformities that may develop.
Percutaneous kyphoplasty, which represents a more advanced form of vertebroplasty, yields favorable outcomes by promptly alleviating pain and ensuring early vertebral stabilization. Kyphoplasty aims to restore the previous angle and height of the spine.
Peter et al. findings regarding the effectiveness of vertebral augmentation in reducing pain compared to traditional treatment. The vertebral augmentation group was more effective in reducing pain in the first month compared to the traditional treatment group. The difference in mean pain level between the two groups was in favor of the vertebral augmentation group. Similar results were observed at other time periods, one to two weeks and one year. However, there was significant statistical heterogeneity in the data combining pain analyses. Specifically, based on data from one study at 24 months, there was no significant difference in mean pain level between the vertebral augmentation group and the conventional treatment group [10]. In our study, there was a statistically significant difference in the averages of pain scores, vertebral correction angles, and vertebral body restoration between preoperative and postoperative measurements (P<0.001).
Steinmann et al. conducted a superiority study looking at unipedicular and bipedicular kyphoplasty and showed that the two approaches are similar when it comes to the restoration of the mechanical integrity of vertebra, but because the unipedicular approach provides reduced vertebral pedicle cannulation risk, operative time, radiation exposure, and even cost, it would be the advisable approach [11]. Due to these reasons and advantages, kyphoplasty is performed unipedicularly in our clinic.
A study by Wang et al. concluded that 98% of patients experienced pain relief 24 hours after surgery and that there was a demonstrated increase in mobility associated with surgical intervention [12].
Another study of 300 patients (149 kyphoplasty and 151 nonsurgical) determined that balloon kyphoplasty was more beneficial than nonsurgical therapy. Kyphoplasty improved patients’ quality of life and mobility and reduced pain, all without increasing the chances of another fracture occurring in adjacent vertebra [13]. In our study, the VAS score decreased to 3.01 at postoperative control. Post-operative pain relief and satisfaction rate was 65.2%. No fracture developed in the adjacent segment in any of our patients.
In a study based on clinical experience by Lemke et al. regarding the treatment of painful osteoporotic compression fractures, they claimed that both vertebroplasty and kyphoplasty can reduce pain and improve quality of life. However, they claimed that kyphoplasty provided better mobility and restored some of the deformities and height of the vertebral body [14]. However, in our study, we do not claim to restore the vertebral local kyphosis angle. The average local kyphosis angle, which was 19.98˚ degrees before kyphoplasty, decreased to 18.07˚ degrees afterwards. It is seen that an average of 1.91% improvement was achieved in terms of local kyphosis.
A retrospective study conducted by Tolba et al. investigated the advantages of kyphoplasty. The study revealed that this procedure leads to a significant increase in vertebral height, approximately 42%, while also enhancing overall function and reducing both pain and the necessity for opioid analgesics [15]. Within the case series we have included in our study, it was observed that the posterior wall height remained within the normal range. The primary collapse occurred in the anterior wall and middle vertebral body. In a comparison with preoperative measurements, it was evident that the vertebral height increased from 19.52 mm to 21.27 mm, signifying an improvement of 1.75 mm (8.97%). Similar results were also obtained by Zarate et al. who observed a reduction in pain for the full 2-year follow-up [16].
In our case series, no cement leakage into the vertebral venous system was observed. In 5 cases, cement leakage developed in the front and back of the vertebral body, disc space and cannula entry area. A common concern and source of adverse reactions in all vertebral augmentation procedures is cement leakage from the vertebral bodies into the venous system. More precise control of cement flow is necessary. Osteomyelitis and adjacent superficial tissue infection did not develop in any of our cases.
In a cadaveric study, Lador et al. also reports that vertebral augmentation through high-viscosity cement produces less severe extravasation compared to standard cements [17].
Genev et al. propose the necessity of identifying potential new biomarkers to assess the efficacy of treatment strategies for spinal compression fractures. They also emphasize the importance of conducting prospective clinical studies [18].
Furthermore, it is crucial to establish a standardized approach for evaluating and measuring the effectiveness of kyphoplasty. Specifically, our clinical recommendation is that kyphoplasty should be undertaken within a timeframe of 5 to 14 days following the onset of the fracture [19]. Performing the procedure within this window is essential because initiating it earlier than 5 days may carry an increased risk of infection due to the heightened inflammatory response during the acute phase. Conversely, delaying the procedure beyond 14 days significantly reduces the likelihood of successful vertebral height restoration.
Conclusion
Kyphoplasty is safe and an effective procedure for alleviating pain and improving function in patients with appropriate indications. This approach offers the advantages of being percutaneous, involving minor surgery, and having a low complication rate. It is a preferred treatment method in suitable patients with appropriate indications due to its ease of percutaneous application. Additionally, it provides early mobilization and high patient satisfaction, particularly in cases of acute pain.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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18. Genev IK, Tobin MK, Zaidi SP, Khan SR, Amirouche FML, Mehta AI. Spinal Compression Fracture Management: A Review of Current Treatment Strategies and Possible Future Avenues. Global Spine J. 2017;7(1):71-82.
19. Minamide A, Maeda T, Yamada H, Murakami K, Okada M, Enyo Y, et al. Early versus delayed kyphoplasty for thoracolumbar osteoporotic vertebral fractures: The effect of timing on clinical and radiographic outcomes and subsequent compression fractures. Clin Neurol Neurosurg. 2018;173:176-81.
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Correlation of thiol-disulfide levels with mortality rates in patients who need intensive care in emergency department
Nihal Erturk 1, Fatih Tanriverdi 2, Servan Gokhan 2, Gulhan Kurtoglu Celik 2, Alp Sener 2, Ayhan Ozhasenekler 2, Ozcan Erel 3, Salim Neselioglu 3
1 Department of Emergency Medicine, Ankara Bilkent City Hospital, 2 Department of Emergency Medicine, Faculty of Medicine, Ankara Yıldırım Beyazıt University, 3 Department of Medical Biochemistry, Faculty of Medicine, Ankara Yıldırım Beyazıt University, Ankara, Turkey
DOI: 10.4328/ACAM.22048 Received: 2023-11-20 Accepted: 2024-02-12 Published Online: 2024-02-21 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):245-249
Corresponding Author: Nihal Erturk, Department of Emergency Medicine, Ankara Bilkent City Hospital, Çankaya, Ankara, Turkey. E-mail: nihalseylan@gmail.com P: +90 506 614 33 44 Corresponding Author ORCID ID: https://orcid.org/0009-0009-9800-6323
This study was approved by the Ethics Committee of Medical School of Yıldırım Beyazıt University (Date: 2017-10-25, No: 26379996)
Aim: We aimed to investigate the prognostic utility of thiol disulfide levels, a novel parameter for oxidative stress, in critically ill patients who presented at the emergency room and required intensive care.
Material and Methods: This prospective study has included 79 patients as the ‘patient group’ and 71 healty volunteers of similar age group with no complaint as the ‘control group’. We analyzed the groups based on age, gender, presenting symptoms, states of consciousness, acute physiological condition, levels of native thiol (NT), total thiol (TT), disulfide, ischemia modified albumin (IMA), and ferroxidase. The mortality status of the patients was determined after a period of 28 days.
Results: Both the patient and control groups were divided into subgroups based on gender and age, and statistical analysis was conducted. However, no significant differences were observed between these subgroups. In terms of NT and TT values, the patient group exhibited significantly lower levels compared to the control group (p < 0.001). The patient group displayed a significant increase in values for index 1, index 2, and index 3 when compared to the control group.
Compared to 28-day mortality, NT and TT values were lower and statistically significant in patients who died (p<0.001). When the disulfide and ferroxidase values were compared the patient and the control, no statistically significant difference was found. Although the IMA value increased significantly in the patient group, no significant difference was detected in terms of mortality.
Discussion: NT and TT levels as oxidative stress indicators were significantly and negatively correlated with 28 day mortality rates and it is suggested that there may be a significant parameter to determine the patient prognosis.
Keywords: Thiol, Disulfides, Mortality, Ferritin, Emergency Department
Introduction
Emergency departments (ED) and intensive care units are health care units that are vital for critically ill patient care who require a multidisciplinary approach. Early detection of risk in patients who may develop cardiac arrest and mortality is important for early intervention. Many diagnostic methods are used to detect risky patients early and determine their prognosis.
Oxidative stress is the loss of balance between the production of free radicals or reactive oxygen species and the antioxidant system [1, 2]. Thiol is an organic compound containing a sulfhydryl group that has a critical role in preventing oxidative stress in cells. Dynamic thiol-disulfide balance has a critical role in antioxidant defense, detoxification and many other issues [1, 2]. According to many recent studies, it has been shown that disruption of the thiol-disulfide balance can cause many diseases. [3].This double-sided balance could only be measured by one side since 1979, but with the new method developed by Erel and Neselioğlu in 2021, both variables can be evaluated separately and collectively [1, 2].
Albumin is one of the most abundant proteins in the body of mammals and its content in blood is approximately 60-65% of total plasma proteins. Albumin properties change under ischemic attacks associated with oxidative stress, production of reactive oxygen species and acidosis. Under these conditions, ischemia-modified albumin (IMA) is produced, which has reduced metal-binding capacity, especially for transition metals such as copper, nickel, and cobalt. Today, it has been determined that IMA increases in many diseases [4].
Ferroxidase activity is a crucial component in maintaining the balance of iron within the body and is involved in defense mechanisms against oxidative stress. It serves as an essential antioxidant, safeguarding biomolecules from harm caused by free oxygen radicals [5, 6].
In our study, we aimed to investigate the relation of oxidative stress parameters such as native thiol (NT), total thiol (TT), disulfide (D), IMA, ferroxidase measurements with prognostic usability and mortality in critically ill patients who applied to ED.
Material and Methods
This study was conducted between November 2017 – April 2018 in an Education and Research Hospital ED. All patients read the informed consent form and gave written informed consent for study participation. A total of 150 patients were included in the study. 79 patients with intensive care indications older than 18 years and 71 healthy volunteers were selected to be the patient and the control group, respectively. Patients were evaluated prospectively. Patients who were pregnant and who refused to participate in the study were excluded. Blood samples were taken within the first hour of ED admission, before starting any medication.
The patients were examined in terms of age, gender, presenting semptoms, states of consciousness, acute physiological condition were all evaluated. Using the new method developed by Erel and Neselioglu, the patients’ antioxidant parameters ( NT, D, and TT ) were also studied. Additionally, the study involved analyzing the disulfide/native thiol ratio (index 1), disulfide/total thiol ratio (index 2), and native thiol/total thiol ratio (index 3). The patients’ levels of IMA and ferroxidase were also examined. All measurements were conducted using an Autocobas 501 auto-analyzer from Roche-Hitachi in Mannheim, Germany. The decision for hospitalization was based on the patients’ Apache 2 score, and the outcome of interest was whether each patient survived or died within 28 days.
Statistical Analyses
Statistical analysis of this study was performed with SPSS Statistics 16.0 for Windows. While evaluating the study data, frequency distributions were given for categorical variables and descriptive statistics were given for continuous variables. Shapiro Wilk normality test was used for continuous variables. Mann Whitney U test, which is a nonparametric test, was used for median comparisons in pairwise independent groups, since the OSI value did not satisfy the assumption of normality (p<0.05) as a result of the test. Independent Samples-t test was used to compare the mean of the data in two groups with normal distribution. Chi-Square tests were performed on 2×2 and 3×2 tables in the evaluation of independent frequency data. Multiple logistic regression analysis was performed to evaluate the factors affecting mortality. ROC analysis was performed in parameters that were found to be significant for mortality and the area under the curve was calculated. Pearson correlation analysis for data showing normal distribution in the evaluation of correlation of continuous variables, Spearman correlation analysis was used for data not showing normal distribution. p value of <0.05 was used for statistical significance.
Ethical Approval
This study was approved by the Ethics Committee of Medical School of Yıldırım Beyazıt University. (Date: 2017-10-25, No: 26379996).
Results
A total of 150 subjects, comprising 79 patients and 71 healthy volunteers, were included in the study. In terms of distribution of gender and age, no significant difference was detected between the two groups (chi-square, p = 0,879; Mann–Whitney U test, p = 0,134) (Table 1).
The critically ill patients included in the study who needed intensive care were followed up mostly in terms of lower respiratory tract infections, neurological diseases such as cerebrovascular accident and seizures, and at least in terms of oncological emergencies.
NT and TT values in the patient group were significantly lower than in the control group (p: <0.001) (Table 2). In the patient group, index 1, index 2 and index 3 values increased significantly compared to the control group ( Table 2 ). The IMA value was significantly higher in the patient group than in the control group (p: <0.001) (Table 2).When the disulfide and ferroxidase values were compared the patient and the control, no statistically significant difference was found ( Table 2 ).
When Erel panel parameters were compared with 28-day mortality, NT and TT values were significantly lower in the non-surviving group. When the index values, disulfide and ferroksidase were evaluated in terms of mortality, no statistically significant difference was found between the surviving and non-surviving groups. Although the IMA value increased significantly in the patient group, no significant difference was detected in terms of mortality (Table 3).
Discussion
The presence of oxidative stress in critically ill patients is known to be linked with unfavorable outcomes. Roth et al.’s study aligns with our own research, as they discovered that oxidative stress parameters were associated with conditions such as sepsis, trauma, kidney failure, and ARDS. However, their study was limited because they were unable to measure the specific oxidative stress parameters, namely thiol and disulfide levels, individually [7].
Another study conducted by Alonso de Vega et al. in 2002 involving 68 patients, found that oxidative stress parameters were higher in critically ill patients with SIRS than in other patients [8].
In the study of Abiles et al., it was found that the worsening of the condition of critically ill patients in the ICU was related to oxidative stress [9].
In another study conducted by Bircan et al. on 45 patients, it was found that low levels of total antioxidant capacity may be significant with low levels in the diagnosis of the disease, but it was not correlated with the prognosis [10].
In our study although the IMA value increased statistically in the patient group, no significant difference was found in terms of mortality. Unlike ours, in 2007 Aparci et al., found that IMA increased in the patient group and was correlated with one-year mortality in their study conducted on coronary intensive care unit patients diagnosed with acute coronary syndrome (ACS) [11].
According to Yıldız’s study, TT and NT levels in sepsis and septic shock patients were found to be significantly lower than the control group, consistent with our study. In our study, the disulfide level was high but not significant in the patient group, while in this study, the disulfide level was low but not significant. In our study, we observed that the levels of native thiol (NT) and total thiol (TT) were significantly higher in the group of patients who survived compared to the group of patients who did not survive. This finding was statistically significant, which differs from previous research where the difference was not statistically significant [12].
While in our study, TTl and NT values were significantly low for 28-day mortality, in another study, no significant difference was observed between the surviving and non-surviving groups in terms of initial TT, NT, disulfide and IMA levels. This difference may be due to the fact that only patients diagnosed with sepsis were studied or the sample size was different [13].
Similarly, in a study involving newborn patients, Aydoğan et al. showed that the natural thiol and total thiol levels of patients with sepsis were lower than healthy newborns, and the serum disulfide/total thiol ratio was higher [14].
However, in another study using the same measurement technique as this study, in the patient group, NT, TT and index 3 were lower, index 1 and 2 were higher, and when patients with and without 28-day mortality were compared in terms of NT, TT, D and index 1, 2 and 3, the difference in no parameter was statistically significant [15].
According to the study conducted by Prashanth and colleagues, patients diagnosed with sepsis who were admitted to the intensive care unit had significantly higher levels of IMA compared to those without sepsis. Elevated IMA levels indicate the presence of ischemic damage, which can be indicative of a poorer prognosis [16].
Limitation
The limitations of our study are; Comorbid diseases that may have affected oxidative stress parameters were not excluded from the study, and post-treatment oxidative parameters were not studied. Another limitation is the small sample size.
Conclusion
Our results indicated that thiol/disulphide homeostasis could be a good biochemical risk marker in critically ill patients in the ED. Further studies are needed to reveal the prognostic value of TT, NT, IMA, disulfide and indexes for patients who need intensive care in the ED.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
References
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2. Ateş İ, Özkayar N, Yılmaz FM, Bayrakçı N, Neselioğlu S, Erel Ö, et al. Kronik böbrek hastalığı olan hastalarda oksidatif stress düzeyi. Ortadoğu Tıp Dergisi. 2018;10(1):45-50.
3. Erel O, Serpil E. Thiol-disulfide homeostasis: an integrated approach with biochemical and clinical aspects.Turkish journal of medical sciences. 2020;50(10):1728-1738.
4. Shevtsova A, Gordiienko I, Tkachenko V, Ushakova G. Ischemia-modified albumin: origins and clinical implications. Disease Markers. 2021;(2021):1-18.
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10. Bircan A, Suetcue R, Goekirmak M, Hicyilmaz H, Akkaya A, Ozturk O. Total antioxidant capacity and C-reactive protein levels in patients with Community-acquired pneumonia. Turkish Journal of Medical Sciences. 2008;38(6):537-544.
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Nihal Erturk, Fatih Tanriverdi, Servan Gokhan, Gulhan Kurtoglu Celik, Alp Sener, Ayhan Ozhasenekler, Ozcan Erel, Salim Neselioglu. Correlation of thiol-disulfide levels with mortality rates in patients who need intensive care in emergency department. Ann Clin Anal Med 2024;15(4):245-249
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Emotional regulation difficulties in migraine patients: Do they link with clinical features of migraine and pain-related disability?
Emre Sunay 1, Hatice Harmancı 2, Hüseyin Büyükgöl 3
1 Department of Psychology, Faculty of Social Sciences and Humanities, KTO Karatay University, 2 Department of Psychology, Faculty of Social Sciences and Humanities, Konya Food and Agriculture University, 3 Department of Neurology, Faculty of Medicine, KTO Karatay University, Medicana Konya Hospital, Konya, Turkey
DOI: 10.4328/ACAM.22053 Received: 2023-11-20 Accepted: 2024-02-23 Published Online: 2024-03-01 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):250-254
Corresponding Author: Emre Sunay, Department of Psychology, Faculty of Social Sciences and Humanities, KTO Karatay University, Konya, Turkey. E-mail: emre.sunay@karatay.edu.tr P: +90 549 551 12 51 Corresponding Author ORCID ID: https://orcid.org/0000-0003-1641-4577
This study was approved by the Ethics Committee of KTO Karatay University’s, Pharmaceutical and Non-Medical Device Research (Date: 2021-03-11, No: 2021/001)
This study aims to elucidate the emotion regulation difficulties (ERD) in migraine sufferers compared to a healthy control group. We intend to explore the correlation between ERD and migraine-related factors like pain intensity, duration, and associated disability. Additionally, the study seeks to identify key determinants influencing disability in migraine patients, thereby contributing to a deeper understanding of the interplay between clinical migraine characteristics and ERD.
Material and Methods: We conducted the research on 70 patients suffering from migraines and 66 healthy individuals. We administered the Structured Questionnaire Form, the Difficulties in Emotion Regulation Scale Short Form, the Migraine Disability Assessment Scale, and the Visual Analog Scale to both groups. We analyzed the data using the statistical program SPSS 25.0.
Results: The total Emotion Regulation Difficulty (ERD) score among migraine patients (p = 0.030) demonstrated a significant increase compared to that of the healthy control group. Furthermore, our analysis revealed no significant correlations between ERD and various migraine-related factors, including pain severity (r = -0.093), duration (r = 0.082), frequency (r = 0.095), or disability (r = 0.021) among migraine patients. Notably, our findings indicate that the severity and frequency of headaches in migraine patients collectively account for 24% of the variability observed in disability scores.
Discussion: Migraine patients are more likely to experience ERD. Psychiatric complaints in migraine clinics may be linked to ERD. Therefore, recognizing ERD in migraine patients, identifying potential factors associated with ERD, and addressing them are expected to impact the prognosis of the disease positively.
Keywords: Migraine, Emotion Regulation, Headache, Disability
Introduction
Migraine is a primary type of headache in which severe, unilateral, and pulsatile pain is generally observed. It is associated with nausea, vomiting, phonophobia, photophobia, and various combinations of auras [1]. Migraine affects patients’ occupational and social lives and causes functional loss. According to the Burden of Disease Study (2015), supported by the World Health Organization, migraine is the 7th among all diseases causing disability and takes the first place among the neurological diseases causing disability [2]. The study also revealed that among individuals under the age of 50, migraine ranked third among all illnesses in terms of disability, with pain being the primary contributing factor [3].
Emotion regulation is a multifaceted process that encompasses a diverse range of internal and external mechanisms. These mechanisms work in concert to monitor, assess, and modulate emotional responses to achieve desired outcomes [4]. In this context, emotion regulation difficulties (ERD) can be categorized into the following: inability to understand emotional responses (clarity), inability to accept emotional responses (non-acceptance), lack of awareness of emotions (awareness), difficulty in impulse control during negative emotional experiences (impulse), difficulty in focusing on goal-directed behavior during negative emotional experiences (goals), and difficulty in accessing appropriate emotion regulation strategies (strategy) [5].
Neurobiological research links pain to emotion through the central nervous system’s synaptic connections, influencing pain sensitivity, which is the modulation of pain perception by emotions and vice versa. While the pain-negative emotion nexus is acknowledged, the impact of emotion regulation styles on pain and disability is still unclear. Emerging studies suggest poor emotion regulation is a risk factor for chronic pain [6]. Numerous studies have examined the relationship between migraine patients and their moods, with findings indicating a higher prevalence of negative moods in individuals with migraines. A study has revealed that individuals with migraines, in comparison to healthy individuals, exhibit increased neural activity in response to negative emotional stimuli [7]. Additionally, they tend to employ ineffective coping strategies and are more prone to experiencing psychiatric pathologies such as depression [8]. One of the possible reasons for these negative emotional experiences common in migraine patients is deficient emotion regulation skills. The role of ERD in migraine disease is not fully understood, and there is a paucity of research in this area. Haratian et al. (2020) compared ERD in headache patients and a control group, finding higher ERD in headache patients, particularly in those with tension-type headaches compared to migraine sufferers [9].
Migraine, characterized by prominent clinical symptoms such as negative emotions and pain, is considered a cause of disability. As disability is a global public health issue, it is essential to identify factors associated with disability in different disease groups, including migraine. Studies investigating the relationship between migraine and disability often highlight the frequency and duration of pain attacks and negative moods [10, 11]. However, no study has examined the role of ERD in this context. There are a limited number of studies on ERD in pain-related illnesses; for instance, individuals with rheumatoid arthritis have been found to struggle with the regulation of their emotional expressions, potentially leading to mental and physical issues associated with pain severity [12]. Conversely, patients with fibromyalgia who freely express their emotions tend to exhibit milder physical symptoms and report fewer missed days of work [13].
The etiology and prognosis of migraines are influenced by both psychological and biological factors; however, many aspects of this relationship remain poorly understood. One of the primary reasons for these uncertainties is the complex interplay between pain and emotion. The clinical characteristics of migraine and the developing degree of disability may be related to ERD experienced by the patient. Our first aim in this study is to investigate ERD in migraine patients. Secondly, we aim to examine the effect of ERD on the clinical features of migraine and disability.
Material and Methods
In our case-control investigation, we aimed to elucidate the disparities between migraine sufferers and healthy individuals. Patients with migraines, presenting with headaches at the Neurology Clinic of Karatay University’s Medical Faculty Hospital, were enrolled in the study. These patients were diagnosed with migraines by a qualified neurologist according to the International Classification of Headache Disorders (ICHD-3) criteria. Concurrently, a control group of demographically similar healthy individuals was included, comprised of hospital staff, patients’ relatives, and university students. The inclusion criteria for both cohorts emphasized an age range of 18-65, voluntary participation, provision of informed consent, and the absence of any physical or psychiatric conditions that might affect the validity of the assessment tools. Data collection was carried out from March to October of the specified year. For the migraine cohort, a Structured Questionnaire Form was used to capture demographic details and clinical characteristics relevant to their condition. The Difficulties in Emotion Regulation Scale – Short Form (DERS-16), a 5-point Likert-type scale developed by (5) and subsequently adapted to a brief form by [14], was utilized to measure difficulties in emotion regulation, with its Turkish validation and reliability established by Yiğit and Guzey Yiğit [15]. Pain severity was assessed using the Visual Analog Scale (VAS), and the Migraine Disability Assessment Scale (MIDAS), validated in Turkish by Ertaş et al. [16], was used to measure disability due to migraines. The MIDAS, comprising seven open-ended questions about the frequency of pain attacks over the past three months, assigns cumulative scores that classify the level of disability into four grades, from Grade 1 (minimal or no disability) to Grade 4 (severe disability). The healthy control group was also assessed using the same Structured Questionnaire Form and DERS-16 to collect sociodemographic data.
Statistical Analysis
The data analysis was conducted using SPSS 25.0. Sociodemographic characteristics were assessed using descriptive statistics, and following the assessment of normal distribution conformity, parametric tests were applied. Statistical analyses were carried out at a 95% confidence interval with a significance level of p < .05. The Student’s t-test was used for comparing differences between two groups, ANOVA for multiple group comparisons, Pearson correlation for the strength and direction of relationships, and hierarchical regression analyses to examine the predictive power of independent variables on the dependent variable.
Ethical Approval
Ethics Committee approval for the study was obtained. This study was approved by KTO Karatay University’s Ethics Committee of Pharmaceutical and Non-Medical Device Research (Date: 2021-03-11, No: 2021/001).
Results
Participants
In our study, we worked with 70 migraine patients and a control group consisting of 66 participants. No significant differences were found between the groups in terms of gender (p=.129), educational status (p=.410), marital status (p= .081), employment status (p= .347), and age (p= .241). Both groups participating in the study had similar demographic characteristics.
When evaluating migraine patients in terms of attack characteristics, 35.7% of the participants reported that the onset hours of their attacks were irregular, 44.4% indicated that the duration of their attacks was between 5-8 hours, and 58.6% stated that they experienced attacks between 1-3 times a month. In assessing the factors that trigger and worsen migraine attacks, it was determined that the participants’ attacks were primarily associated with emotional changes.
This was followed by fatigue, bright lights, and insomnia, respectively. According to MIDAS scores used to measure disability due to migraine, 28.6% of migraine patients had grade 1 (no or very little loss), 21.4% had grade 2 (mild loss), 17.1% had grade 3 (moderate loss), and 32.9% were identified as grade 4 (advanced loss). The average MIDAS score of the participants was determined to be 19.10 days.
According to the independent samples t-test results, the DERS-16 scores of migraine patients were found to be significantly higher than controls (t=2.198, P<.05). When the DERS-16 subscales were evaluated with t-tests for independent samples, the subscale score for rejection was found to be significantly higher in migraine patients than controls (t= 2.157, p<.05). There was no significant difference between the groups on the clarity, goals, impulses, and strategies subscales. The evaluation data are presented in Table 1.
When the socio-demographic characteristics of the migraine group with ERD were evaluated, it was found that ERD did not differ according to gender, educational status, marital status, income level, and work status. At the same time, no relationship was found between ERD and age (r=-.110), pain intensity (r=-.093), frequency of pain (r=.095), and duration of pain (r=.082).
To determine the relationship between ERD and disability in migraine patients, the Pearson Correlation test was performed, and no relationship was identified (r=.021). The mean scores obtained from DERS-16 according to the grade of disability were analyzed by one-way ANOVA. A statistically significant difference was found between MIDAS grades in the non-acceptance subscale. As a result of Tukey HSD analysis, it was determined that patients with 4th-grade disability in MIDAS grades had significantly lower scores than patients with 1st-grade disability. The data are presented in Table 2.
In a regression analysis assessing factors affecting MIDAS scores, preliminary correlations showed variable relationships below the .80 threshold, indicating suitability. Durbin-Watson and VIF metrics were within acceptable limits. Model 1 found that headache frequency and migraine duration positively influenced MIDAS scores, while migraine duration’s impact was statistically insignificant (R² = .13, F = 4.92, p < .05). Introducing pain intensity (VAS Score) in Model 2 significantly improved predictive power for MIDAS scores, with an R² increase of 11% to .24 (F = 6.97, p < .05). This model demonstrated that headache frequency and pain severity explained 24% of variance in migraine-related disability, with each unit increase in these factors raising MIDAS scores by .28 and .351, respectively.
Discussion
Our study concluded that migraine patients experience more ERD, but ERD does not affect disability in this patient group. At the same time, no relationship was found between the clinical characteristics of migraine and ERD. When migraine patients were stratified according to the extent of their disability, it was found that migraine patients’ controls differed only in the DERS-16 non-acceptance subscale. The frequency and severity of pain in patients with migraine explain 24% of the variance in disability.
The limited number of studies examining the relationship between migraine, emotion, and emotion regulation, yield different results. A study conducted with adolescent women found that migraine patients experienced more alexithymia, negative affection, rumination, and catastrophizing and were also less successful in cognitive reassessment [17]. Haratian et al. (2020) examined ERD in their study with patients with primary headaches and healthy volunteers, finding that patients with headaches had more recurrent negative thoughts than the control group. Those with tension-type headaches also experienced more ERD than migraine patients [9]. These results are in accord with our findings that migraine patients experience more ERD. In contrast, Perozzo et al.’s (2005) study concluded that individuals with migraines exhibited superior emotional coping abilities and lower levels of anger compared to individuals with other primary headaches and healthy controls [18]. Wolf et al. (2020) conducted a study on migraine patients from different cultures, finding no relationship between headache and emotion regulation [19]. Migraine, being a pathology that persists even in episodic attacks, the variability of its prognosis, and the disruption of quality of life due to accompanying clinical symptoms cause negative emotions in individuals. It is thought that the increased ERD in migraine patients is also related to these negative experiences.
Migraine is a common pathology in which loss of ability is considered a public health problem due to the resulting socioeconomic losses. For this reason, it is essential to determine the clinical variables that may be related to the disability. A study conducted showed that migraine sufferers who experience disability have more frequent attacks, and the attacks they experience are more severe [20]. A study conducted in Turkey found that the most critical determinants of disability are the frequency and severity of attacks [10]. Our research aligns with existing literature in identifying two primary factors that contribute to disability in individuals with migraines: the frequency and severity of attacks. It is believed that an increase in the frequency and severity of pain attacks can significantly diminish an individual’s quality of life, reduce their overall functionality, and further worsen their level of disability.
When the factors that trigger a migraine attack were examined in the study, it was found that patients were most often affected by emotional changes. Similarly, studies in the literature determine the relationship between emotional change and attacks [21, 22]. According to the information obtained here, it was thought that the presence of ERD against the emotional changes might be related to disability, but no relationship (r=.021) was found. Similar to our study, Wolf et al. (2020) showed that emotion regulation skills are not associated with quality of life in migraine patients [19]. Chan and Consedine (2014) determined that the inability to manage negative emotions in migraine patients causes difficulties in coping with the disease and reported that this may be related to disability [23]. There is no publication in the literature reporting that ERD is associated with disability in migraine patients. However, studies conducted on certain painful conditions, such as rheumatoid arthritis and fibromyalgia, have found that difficulties in emotion regulation (ERD) can impair patient functionality [12, 13]. Our research did not establish a clear link between ERD and disability, which led us to consider two potential explanations. The first possibility is that the heterogeneous and variable nature of migraines, as well as the unique characteristics of our sample, may have influenced this lack of relationship. Secondly, while ERD may contribute to emotional changes in individuals with migraines, it may not be a strong enough factor to significantly impact their overall level of disability. In our study, when the patients’ scores on the DERS-16 and its subscales were analyzed according to their disability levels, it was found that only patients with 1st-degree disability in the refusal subscale got significantly higher scores than patients with 4th-degree disability. It was thought that this might be related to the fact that patients with more disabilities accept the disease and develop appropriate coping mechanisms.
Study Limitations
This study has several limitations. First, it was conducted at a single center, which limits the generalizability of the findings to other populations. Second, the sample size was relatively small, which reduces the power of the study to detect statistically significant relationships. Third, the study did not classify participants according to migraine subtypes, which may have obscured significant differences in the relationship between migraine, ERD, and disability. Future studies with larger sample sizes and classification of participants according to migraine subtypes are needed to confirm and extend the findings of this study.
Conclusion
Migraine is a complex neurological condition with a significant impact on quality of life, functional capacity, and disability. While the impact of mood changes in migraines is well-established, the role of emotional regulation difficulties (ERD) is a relatively new area of research. ERD is characterized by impairments in the ability to recognize, express, and manage emotions. It is hypothesized that ERD may play a role in the clinical manifestations of migraine and its association with disability. However, more research is needed to confirm these hypotheses, with larger sample sizes and representation from diverse settings. The findings of these studies could have important implications for the prognosis and management of migraine.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Emre Sunay, Hatice Harmancı, Hüseyin Büyükgöl. Emotional regulation difficulties in migraine patients: Do they link with clinical features of migraine and pain-related disability? Ann Clin Anal Med 2024;15(4):250-254
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The biomechanical analysis of first metatarsocuneiform arthrodesis using the finite element method: A comparison of plate osteosynthesis in different positions
Hacı Ali Olçar 1, Alaettin Özer 2, Halil Burak Mutu 3, Tolgahan Kuru 4, Göker Yurdakul 1, Davut Aydın 1, Murat Korkmaz 1
1 Department of Orthopedics and Traumatology, Faculty of Yozgat Bozok Medicine, Yozgat Bozok University, Yozgat, 2 Department of Mechanical Engineering, Faculty of Engineering and Architecture, Yozgat Bozok University, Yozgat, 3 Department of Mechanical Engineering, Faculty of Engineering and Architecture, Tokat Gaziosmanpaşa University, Tokat, 4 Department of Orthopaedics and Traumatology, Faculty of Medicine, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
DOI: 10.4328/ACAM.22077 Received: 2023-12-20 Accepted: 2024-02-22 Published Online: 2024-03-09 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):255-259
Corresponding Author: Hacı Ali Olçar, Department of Orthopedics and Traumatology, Faculty of Yozgat Bozok Medicine, Yozgat Bozok University, Yozgat, Turkey. E-mail: h.ali.olcar@bozok.edu.tr P: +90 505 743 73 38 Corresponding Author ORCID ID: https://orcid.org/0000-0002-3097-3677
Aim: The aim of this study was to compare plate positions in Lapidus arthrodesis in terms of displacement and plate stress.
Material and Methods: In this study, the Lapidus arthrodesis was performed in a computerised environment using a finite element foot model with differentially positioned plates. The arthrodesis (Lapidus arthrodesis) was applied to the first metatarsocuneiform joint with 2 proximal 2 distal 3.5 mm screws using a 4-hole plate in three different directions: medial, dorsal and plantar.
Results: Displacement in the arthrodesis area and stress on the fixation material, the plate, were evaluated. After loading, the plantar plate arthrodesis model produced more total displacement (1, 97121 mm) and stress (2242 MPa) than other arthrodesis models. On the other hand, the dorsal plate arthrodesis model has less total displacement (1, 20479 mm) and stress (1253 MPa) than other arthrodesis models. In the volar, dorsal and medial finite element models, it was concluded that the least displacement and plate stress were in the dorsal plate application.
Discussion: In the finite element study, complications can be seen more frequently in Lapidus arthrodesis performed with plantar and medial plates compared to Lapidus arthrodesis performed with dorsal plates. Therefore, Lapidus arthrodesis performed with a dorsal plate may be more stable.
Keywords: Arthrodesis, Finite Element Analysis, Foot
Introduction
Lapidus arthrodesis is a widely preferred and established procedure for the correction of various foot surgical problems, as this surgical technique allows the alignment of the first toe in all three axes. Lapidus arthrodesis is recommended as a first step in the treatment of hallux limitus, hallux valgus, hallux varus, hindfoot deformity, hypermobility of the first toe and metatarsal adductus [1].
Although the Lapidus arthrodesis was first advocated by Albrecht in 1911, it was Lapidus who popularized the method [2, 3]. The described arthrodesis treatment has survived to this day under the name Lapidus [4].
The Lapidus procedure is a form of surgical arthrodesis performed on the first tarsometatarsal joint. Although the results of Lapidus arthrodesis are very good, non-union or malunion is seen in 5-15% of patients. To minimize the risk of complications in Lapidus arthrodesis, the arthrodesis should be as stable as possible [5]. This shows the importance of stability for the arthrodesis.
Lapidus arthrodesis is one of the surgical options for the treatment of hallux valgus [1–3]. Lapidus arthrodesis used for the treatment of hallux valgus may be associated with various complications such as non-union, malunion and implant failure [6].While Myerson et al. [7] indicated that the incidence of non-union in tarsometatarsal arthrodesis was 4.5%, Sangeorzan et al. [8] emphasized that this rate was up to 13%. In a meta-analysis on lapidus arthrodesis [9], non-union was reported in 5.4% of patients after arthrodesis and false union in 6.1%.
Although there are different fixation methods in Lapidus arthrodesis, plate fixation is particularly recommended to minimize the risk of non-union, allow early weight bearing and rapid return to reference range of motion [10, 11]. However, there is no complete consensus on the correct location of the plate, and it is emphasized that there is a need for studies on the location and design of the plate system and the effectiveness of the results of plate detection for the treatment of hallux valgus [1, 12–14].
The aim of this study was to determine the stability of the arthrodesis and the plate stress after loading in a computer environment of 3 different Lapidus arthrodesis fixed with volar, dorsal, and medial 4-hole plates and compression screw modelled with finite elements. It is therefore desirable to demonstrate the importance of plate location in complications such as non-union, malunion and implant failure that may occur in Lapidus surgery.
Material and Methods
In this study, the stress in the plate and the displacement in the arthrodesis were evaluated using finite element analysis according to the volar, dorsal and medial locations of the plate used for Lapidus arthrodesis.
The effect of the plate placed in different positions used in the foot first toe tarsometatarsal arthrodesis (Lapidus arthrodesis) created by finite element modelling on the stability in the arthrodesis and the tension in the plate used was analysed using Ansys Workbench software.
The relationship between plate fixation, which is one of the fixation methods, and such complications was demonstrated using modelling. For this purpose, a three-dimensional (3D) finite element bone model was constructed.
To create a 3D foot first tarsometatarsal joint arthrodesis model, CT images of the right ankle in 90° flexion were digitized to create solid bone models. These models were segmented into cortical and cancellous bone in the tibia, fibula, and foot bone models.
To analyse the arthrodesis of the first tarsometatarsal joint of the foot, the articular surface of the first tarsometatarsal joint of the foot was removed and a bony interface connection was created. The arthrodesis line of the first metatarsophalangeal joint was horizontal with respect to the joint plane and its direction was parallel to the x-axis of the global coordinates. The models were assembled in Ansys/SpaceClaim software according to the surgical procedure with the solid part of the implants. Volar, dorsal, and medial 4-hole plate and screw (PS) fixation methods were used (Figure 1).
A method called plate and screw fixation has been used in tarsometatarsal joint arthrodesis of the first toe. According to this surgical procedure, the incision is made at the level of the tarsometatarsal joint of the first toe and the chondral surface of the joint is removed and fixed [10, 11].
In the finite element model we prepared, as described in this surgical technique, 3 different models of volar, medial, and dorsal 4-hole plates were placed for fixation of the first metatarsophalangeal and medial cuneiform joint arthrodesis. The plates (Parcus Medical, Sarasota, FL, USA) were secured with 2 screws distal to the arthrodesis line and 2 screws proximal to the medial cuneiform of the first metatarsal. The plate used to connect the first finger tarsometatarsal joint arthrodesis is made of titanium alloy material. Linear elastic isotropic material models were used for the plate, bone and joint. The resulting solid models were converted into finite element models using Ansys Workbench software. The material parameters used for the plate and bone are given in Table 1 [15].
The finite element models are constrained so that they cannot make any translations or rotations from the lower boundary of the model. Loads were applied to the upper boundary of the model, the tibia, with a force of 600 N applied vertically downwards [16, 17].
The boundary conditions and loads were used. To simulate the real state of the fibula and tibia in the tissue, horizontal movement from the top of the model was prevented. The elements used for the connection are fixed to the foot, similar to the real conditions. Considering the arthrodesis interface as a frictional contact, the coefficient of friction was set at 0.2.
In order to obtain the best results in the finite element analysis, mesh optimization was performed, and the best mesh density was determined. With the best mesh density, the finite element models of the 3D models were also analysed using Ansys Workbench 2020R2 Finite Element software under the given loads. Then, the foot, fixed with a plate screw under load, was fixed in 3 different ways for arthrodesis in the first toe Lapidus arthrodesis modelling (Figure 1).
Two criteria were chosen to present the results of the numerical analysis (FEA – Finite Element Analysis). One is the von Mises stress criterion on the metal component of the fixation methods. The von Mises stress criterion determines where a given material will yield. The other criterion is the displacement and rotation of the arthrodesis space. The displacement and rotation measured after the application of physical stress is defined as the movement between the components. In particular, interfragmentary movement in the axial direction plays an important role in the stability of the arthrodesis, and this movement prevents bone healing and causes non-union [18].
Points A and B were placed on the arthrodesis surface at the maximum and minimum effective points, respectively. The relative distance measurements of these points were calculated in three axes (X-mediolateral direction, Y-anteroposterior, Z-superoinferior).
Ethical Approval
Our study is not a clinical trial. This finite element study was conducted in a computer environment and a clinical ethics committee decision is not required.
Results
The material parameters used for Lapidus arthrodesis models are given in Table 1. As shown in Figure 1, in Lapidus arthrodesis models, which were fixed with plate screws in 3 different ways under load, first the displacement in the arthrodesis line and then the stress on the plate were evaluated. It was determined that the post-loading displacements of the plantar plate in the x, y and z directions were 0.58 mm, 0.71272 mm and 0.67849 mm, respectively. The total displacement of the plantar plate was 1.97121 mm.
Displacements of the dorsal plate in x, y and z directions were 0.40327 mm, 0.126 mm, and 0.67552 mm, respectively. The total displacement of the dorsal plate was also 1.20479 mm.
For the medial plate, the displacements in x, y and z directions were 0.4577, 0.7486 and 0.57177 mm, respectively (Table 2) (Figure 2, 3).
The maximum stress values in the plates after the analyses are such that for the plantar plate it is 2242 MPa, for the dorsal plate 1253 MPa and for the medial plate 2238 MPa (Table 3). If we compare them, we can see that the minimum stress is on the dorsal plate.
The dorsal plate was the most suitable combination in terms of displacement and minimum stress when three different plate placements were compared. On the other hand, the largest total displacement and stress were found on the plantar plate (Figure 3).
In terms of inter-particle displacement, the lowest displacement was found in the dorsal plate fixation method and the highest displacement was found in the medial plate fixation method.
Discussion
According to our study results, the reason why the dorsal plate placement is more suitable than others is that the dorsal plate is more effective than the plantar and medial plates. This is because the stress distribution on the dorsal plate under load is more homogeneous than others. It causes the load to spread and causes the stresses on the dorsal plate to decrease. Others carry the load mainly with the center of the plate, but the dorsal plate carries the load with the whole body.
Our results are similar to those reported in a previous biomechanical study. In this study by Ray et al, [19] it was emphasized that the use of a plate increased the stability of the first metatarsocuneiform arthrodesis. In addition, fixation of the arthrodesis with 2 proximal and 2 distal 3.5 mm screws using a 4-hole dorsal plate was recommended to protect the fusion site from loading. The dorsal plate is more effective than the plantar and medial plates. These results are consistent with our work in the computer environment using the FEA technique.
On the other hand, a biomechanical study suggests the superiority of the plantar plate position in detection. Plantar and medial plate positions are superior to displacement in arthrodesis. In particular, arthrodesis performed with the plate positioned medially is superior in terms of less displacement and resistance to loading forces. Dorsal plate placement was not superior for any of the outcomes measured. It was emphasized that plantar and medial plates offer biomechanical advantages. It is emphasized that clinical trials with similarly matched constructs are needed to show whether these findings translate into improved clinical outcomes [20]. When these results are evaluated, they differ from the results of our study. In our study, the dorsal plate was found to be superior to the plantar and medial plates in terms of loading and displacement. These results need to be evaluated in long-term clinical trials.
Another study compared plate fixation for arthrodesis with intramedullary fixation. In this study, Roth et al. [13] presented metatarsocuneiform (MTC) fusion (Lapidus arthrodesis) as a treatment option for hallux valgus. They emphasized that plantar plate fixation creates a stronger and more rigid structure than IM fixation. They concluded that plate fixation provides a more stable fixation and reduces the risk of non-union and the duration of weight-bearing disability. They state that plate fixation is appropriate in Lapidus arthrodesis [13]. However, there is no suggestion in the article for different placements of the plate.
A review of the efficacy of the Lapidus plate system in 2022 states that there are insufficient studies on the efficacy of different types of Lapidus plate systems in foot surgery. In addition, it is emphasised that there is a need to increase knowledge about the fixation level, system type and placement of the plate in Lapidus surgery [1].
In a study of dorsal-medial locking plate and screw fixation in Lapidus arthrodesis, the dorsal-medial plate showed better preservation of intermetatarsal angle (IMA) correction compared to screw fixation at mid-term follow-up [21].
A study evaluating the soft tissue effect of Lapidus arthrodesis found that Lapidus arthrodesis with a plantar plate resulted in high patient satisfaction and significant deformity improvement at mid-term follow-up. On the other hand, it was reported that more than half of the patients had tendinopathy symptoms on postoperative magnetic resonance imaging (MRI). It is emphasised that these findings should be taken into account when choosing the method of fixation and implant placement in Lapidus arthrodesis [22].
Another study also highlights that the superficial peroneal nerve (SPN) is at risk of iatrogenic injury due to incisions made along the medial column, including the medial branch of the medial dorsal cutaneous nerve (MDCN) branch, dorsal longitudinal incision for Lapidus fusion. The study concluded that the surgeon must be careful to avoid nerve injuries during dissection [23].
A study of 3-plane first tarsometatarsal arthrodesis using a combination of dorsal and medial plates reported statistically significant improvements in radiographic correction, low deformity recurrence and early return to activity with low complication rates up to 24 months post-operatively. In addition, statistical improvements in patients’ health-related quality of life are reported up to 24 months [24]. Although the fixation results of double plate application are good, it has disadvantages such as additional incision, soft tissue dissection and cost.
In a study comparing the biomechanical stability of Lapidus arthrodesis performed with the plantar Lapidus plate in patients with severe symptomatic hallux valgus with proximal chevron osteotomy performed with plate fixation, it is emphasised that the angular correction potential and clinical value of modified Lapidus arthrodesis performed with the plantar plate is better than chevron osteotomy [25].
In a study on the use of different types of the Lapidus Plate System, it is stated that “the use of screwed or screwless plates, proper levelling and system placement are related to existing foot discomfort” [1]. It is emphasized that there is a need for studies on the level of fixation and placement in foot surgery and studies to increase knowledge of the plate system and plate outcomes in foot surgery. For this purpose, in our study, we addressed this controversial issue from a different perspective with a finite element study.
Conclusions
Although the Lapidus arthrodesis is a recommended surgical technique for the treatment of hallux valgus, various studies show a symptomatic non-union rate of up to 12% and an overall failure rate of up to 20%. In our study, in finite element modeling of dorsal, medial and plantar plate screw fixation, it was determined that the dorsal plate fixation method provided better stability in Lapidus arthrodesis than other plate locations. We believe that these rates may be further reduced with new studies on the design and placement of the proposed plate system in Lapidus arthrodesis. For this purpose, we tried to show the most appropriate plate location in Lapidus arthrodesis in terms of arthrodesis displacement and plate loading using finite element modelling.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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21. Abben KW, Sakow CF, Sorensen T, Chang HC, Boffeli TJ. First Tarsometatarsal joint fusion for hallux valgus deformity: A retrospective comparison of two fixation constructs regarding initial maintenance of correction and complications: Traditional Crossing Screw Fixation Versus Dorsomedial Locking Plate and Intercuneiform Compression Screw. J Foot Ankle Surg. 2023;62(2):347-354.
22. Niehaus R, Hodel S, Eid K, Bensler S, Lenz CG. Plantar plating in the modified Lapidus procedure: Evaluation of function and impairment of the Tibialis anterior tendon. J Foot Ankle Surg. 2022;61(6):1203-1208.
23. Boffeli TJ, Gervais SJ. Accuracy of palpation to identify the medial branch of the medial dorsal cutaneous nerve in medial column surgery: Correlation of preoperative nerve marking with intraoperative findings during Lapidus fusion. J Foot Ankle Surg. 2021;60(1):2-5.
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Clinical and histological determinants of uterine leiomyoma recurrence following myomectomy
Şirin Aydın 1, Gülşen Doğan Durdağ 1, Didem Alkaş Yağınç 1, Şafak Yılmaz Baran 2, Songül Alemdaroğlu 1, Erhan Şimşek 1, Filiz Aka Bolat 3, Hüsnü Çelik 1
1 Department of Obstetrics and Gynecology, Faculty of Medicine, Dr. Turgut Noyan Application and Research Center, Başkent University, Adana, 2 Department of Obstetrics and Gynecology, Faculty of Medicine, Acıbadem Dr Sinasi Can Kadikoy Healthcare Group, Acibadem University, Istanbul, 3 Department of Pathology, Faculty of Medicine, Dr. Turgut Noyan Application and Research Center, Başkent University, Adana, Turkey
DOI: 10.4328/ACAM.22084 Received: 2023-12-25 Accepted: 2024-02-29 Published Online: 2024-03-14 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):260-265
Corresponding Author: Şirin Aydın, Department of Obstetrics and Gynecology, Faculty of Medicine, Dr. Turgut Noyan Application and Research Center, Başkent University, Adana, Turkey. E-mail: dr.sirinaydinn@gmail.com P: +90 533 281 43 51 Corresponding Author ORCID ID: https://orcid.org/0000-0001-6176-925X
This study was approved by the Ethics Committee of University Institutional Review Board (Date: 2022-03-15, No: KA22/104)
Aim: Uterine leiomyomas are frequent benign tumors of the female genital system, and a substantial proportion of them recur following therapy. In this study, the clinical and histological characteristics that influence leiomyoma recurrence in women who have undergone surgical therapy for uterine leiomyoma were evaluated.
Material and Methods: Patients who underwent myomectomy for uterine leiomyoma at a tertiary center between 2012 and 2021 were retrospectively analyzed. Demographic characteristics of the patients, clinical results, surgical techniques, and data on leiomyoma recurrence were investigated and evaluated. Recurrence was defined as the appearance of a new leiomyoma that was 1 centimeter or larger in size at transvaginal ultrasonography, which was performed at least 6 months following myomectomy.
Results: The study comprised 594 patients with a mean age of 36.3±5.5 (16–53) years and a mean follow-up duration of 23 (6–72) months. Recurrence was detected in 118 (19.9%) of the patients. Estimated recurrence times were found to be 70.5±2.5 months, and the 1-year period without recurrence was 96.4%. The number of patients who were reoperated due to recurrence was 48 (8%). It was determined that the recurrence rate was higher in submucosal leiomyomas and lower in subserous leiomyomas (p = 0.002). In addition, cellular myomas were found to have a higher risk of recurrence (p = 0.009). In patients who had pregnancy or delivery after myomectomy, recurrence rates were significantly lower (p = 0.0001). Laparoscopic or laparotomic surgery was not shown to be statistically associated with recurrence (p = 0.326).
Discussion: Myoma recurrence risk is influenced by the myoma’s location and histological characteristics. The recurrence rate appears to be similar after laparoscopic and laparotomic surgery. Follow-up in terms of recurrence risk may be guided by a careful evaluation of the clinical findings of the patients and an extensive pathological examination.
Keywords: Cellular Myoma, Laparoscopic Myomectomy, Myoma Uteri, Recurrence, Uterine Leiomyoma
Introduction
Uterine leiomyomas (UL) are the most prevalent benign tumors of the female reproductive tract [1]. Although more than half of the women with uterine leiomyomas are asymptomatic [2], uterine leiomyomas frequently present with menorrhagia, pelvic pain, a pelvic mass, and infertility, which require treatment in many women of reproductive age [1].
Medical and surgical therapy options are available, while many patients who have undergone a myomectomy have a recurrence during later follow-ups [3]. Compared to surgical treatment, medical treatment is associated with a higher incidence of UL recurrence [4]. Predicting the probability of recurrence risk is important for treatment choice. Surgery for symptomatic leiomyomas includes hysterectomy, myomectomy, and uterine artery embolization. The patient’s age, fertility goals, leiomyoma size and number, and risk of recurrence determine the treatment.
The association between clinical parameters such as the number and size of leiomyomas, type of surgical treatment, and parity after myomectomy and leiomyoma recurrence has been explored in the current literature. However, the effect of these factors on the risk of recurrence is not well understood. Studies on histological variables that influence recurrence are even rarer [5]. Currently, gynecologists assess the risk of UL recurrence and make a subjective determination based on their own personal experience.
This study aims to analyze the clinical and histological risk factors of patients with leiomyoma recurrence during follow-up after myomectomy, as well as to identify the objective risk variables associated with recurrence.
Material and Methods
Data of the patients who were diagnosed with uterine leiomyoma and underwent myomectomy at the Gynecology and Obstetrics Clinic of a tertiary center between 2012 and 2021 were analyzed retrospectively through the hospital registry system.
Patients’ demographic information, including age, body mass index (BMI), gravida, and parity, were recorded. Complaints at hospital admission, clinical characteristics of detected leiomyomas, including number, location, size, type of surgical procedure performed, need for medical treatment or re-surgery in the follow-up of patients after treatment, and pregnancy and delivery histories following myomectomy were recorded.
Myomectomy was performed either by laparoscopy, laparotomy, or hysteroscopy, taking into account the number, location, and size of the myomas, clinical suspicion of malignancy, and age, BMI, and desire for fertility of the patient. In laparoscopic myomectomies, especially in recent years, myomas are taken out of the abdomen in a safe-bag.
This study included typical leiomyoma, mitotic active leiomyoma, cellular leiomyoma, epithelioid leiomyoma, and leiomyomas with bizarre nuclei (atypical leiomyomas) regarding histopathological assessment. In addition, the existence of hyaline degeneration, ischemic necrosis, and myxoid alterations in myoma nodules were considered during evaluation. Recurrence was defined as the appearance of a new leiomyoma measuring 1 cm or greater on transvaginal ultrasonography after a period of at least 6 months following myomectomy [6].
Data analysis was performed using the SPSS 25.0 package program. Categorical measurements were summarized using numbers and percentages, whereas continuous measurements were summarized using mean and standard deviation (median and range where appropriate). Statistical comparisons were conducted between two subgroups with and without myoma recurrence. Distributions were controlled and the Student’s t test was used for variables with a parametric distribution and the Mann-Whitney U test was used for variables with a nonparametric distribution when comparing continuous measurements. The Chi-Square or Fisher Exact test was utilized to analyze the categorical variables between the groups. All tests were considered statistically significant if P< 0.05.
Ethical Approval
This research was approved by the Baskent University Institutional Review Board (Date: 2022-03-15, No: KA22/104)
Results
In our clinic, a total of 1,462 myomectomies were performed between 2012 and 2021. Our study comprised patients who were followed a minimum of once, at least six months following myomectomy. Thus, the study included 594 patients with a mean age of 36.3±5.5 years and a mean follow-up duration of 23 (6-72) months. The study included 594 patients with a mean age of 36.3±5.5 years and a mean follow-up duration of 23 (6–72) months. There was recurrence in 118 (19.9%) of the 594 patients who were included in the study. Of those 118 patients, 48 (8%) required additional surgery to treat the recurrence, and the estimated time to recurrence was 70.5±2.5 months. There was no difference in terms of age at diagnosis, gravida, BMI, number of leiomyomas, or leiomyoma diameter between the groups with and without recurrence. The median leiomyoma diameter was 6 cm (1 to 25), and the median recurrent leiomyoma diameter was 3 cm (1–11).
It was found that 11 (0.001%) of the patients underwent hysteroscopy, 374 (62.9%) underwent laparoscopy, and 202 (34%) underwent myomectomy via laparotomy. Of those who underwent laparoscopy, 63 (16.8%) utilized a safe-bag. In terms of recurrence, there was no statistically significant difference between patients undergoing laparoscopy and laparotomy; however, statistically significant recurrence was found in patients who underwent hysteroscopic myomectomy (p = 0.02). It was also seen that removing the leiomyoma via a safe-bag in laparoscopic surgery did not significantly affect the risk of recurrence (p = 0.592) (Table 1).
At the time of the initial diagnosis of patients who had recurrence, 40.3% presented with abnormal uterine bleeding, 23.5% with pelvic pain, and 16.8% with infertility symptoms. On the other hand, in the group who did not experience recurrence after surgery, 35% of patients initially presented to the gynecologist with infertility symptoms, while in 25.1% of patients, leiomyomas were identified incidentally in asymptomatic patients (p = 0.0001).
As per location, 21 (3.5%) of patients had submucous leiomyomas, 317 (53.8%) had intramural leiomyomas, 99 (16.8%) had subserous leiomyomas, and 152 (25.8%) had mixed-type leiomyomas. The probability of recurrence for submucous fibroids was significantly higher (p = 0.001). Pregnancy or delivery following myomectomy were found to decrease recurrence substantially (p = 0.0001). Although medical treatments such as GnRH (Gonadotropin releasing hormone) analogs, intrauterine devices with levonorgestrel, or oral contraceptives were utilized in 8% of patients during postoperative follow-up, no significant change in recurrence rates was identified (Table 1).
Histopathologically, 482 patients had typical leiomyomas, 49 had mitotic active leiomyomas, 3 had epithelioid leiomyomas, 51 had cellular leiomyomas, and 9 patients had leiomyomas with bizarre nuclei. Leiomyomas with hyaline degeneration were found in 48 patients, ischemic necrosis was seen in 67 patients, and myxoid differentiation in 16 patients. The incidence of recurrence of cellular leiomyomas was reported to be considerably higher (p = 0.009), while the existence of mitotic active leiomyoma, epithelioid differentiation, atypia, hyaline degeneration, myxoid alteration, or ischemic necrosis did not significantly affect the risk of recurrence (p > 0.05) (Table 2).
A Kaplan-Meier analysis was used to determine the recurrence time of the participants. The estimated recurrence time for the patients was 70.5±2.5 months, and a 1-year period without recurrence was seen in 96.4% of the patients (Table 4). Myoma location significantly affected recurrence. The recurrence time was statistically substantially shorter in patients with submucous myoma, as indicated by the Kaplan-Meier method. The 3-year period without recurrence was determined to be 54.6% for submucous myomas, 78.3% for intramural myomas, 89.2% for subserous myomas, and 85.3% for mixed myomas. The 3-year period without recurrence for patients without cellular myoma was 82.6%, compared to 70.6% for patients having myoma with cellular characteristics (p = 0.001) (Table 3).
In terms of variables such as age at diagnosis, follow-up period, gravida, parity, BMI, largest myoma diameter, recurrence diameter, and recurrence time, a statistically significant difference was not found between patients who had recurred and undergone reoperation and patients who had recurred but had not undergone surgery after their initial relapse (p > 0.05).
Discussion
In this retrospective, single-center analysis of 594 women who underwent myomectomy at our clinic, the probability of recurrence of cellular myomas was found to be greater (p=0.009), and less recurrence was reported in patients who had pregnancy or delivery following myomectomy (p=0.0001). In addition, a statistically significant relation between myoma location and recurrence was reported. Submucous myomas were shown to have considerably shorter recurrence periods. Recurrence was observed to be more prevalent following hysteroscopic myomectomy for submucous myomas (p=0.002) Laparoscopic or laparotomic surgery was not significantly associated with recurrence (p=0.326). The use of a safe-bag did not have a statistically significant effect on recurrence in laparoscopic myomectomy patients (p=0.592).
Myomectomy with laparotomy was generally anticipated to have a lower recurrence rate than laparoscopic myomectomy because gynecologists could remove as much of the visible and palpable leiomyomas as possible during laparotomy [6, 7]. However, there are studies indicating that the incidence of UL recurrence after myomectomy is comparable between laparotomy and laparoscopy [6, 8, 9]. In the study of Kotani et al., recurrence following laparotomy and laparoscopic myomectomy were compared, and myomectomy via laparoscopy was found to be associated with an increased risk of recurrence. A lower postoperative recurrence rate is believed to be due to less remaining fibroid mass after myomectomy through laparotomy [7]. According to research published in 2019 by Ming et al., the incidence of UL recurrence was similar between laparoscopy and laparotomy in patients with ≤ 5 leiomyomas. When there were > 5 leiomyomas, the recurrence rate of myomectomy performed by laparoscopy was significantly greater. It was demonstrated that the reoperation rate of uterine leiomyomas was comparable between laparoscopy and laparotomy in women between the ages of 18 and 44 who had ≤ 3 leiomyomas [10]. In our study, we found no difference in recurrence between laparotomic and laparoscopic myomectomy. On the other hand, we concluded that submucous myomas and thereby hysteroscopic myomas have a significant recurrence rate. Since submucous leiomyomas cause more symptoms, such as irregular uterine bleeding and infertility, when compared to leiomyomas at other locations, patients with submucous leiomyomas may virtually seem to have a considerably greater recurrence rate due to frequent follow-up [7].
Removal of the material in a safe-bag during laparoscopic myomectomy appears to be a safe and feasible operation for lowering the danger of malignant cell and tissue spread [11]. In a few retrospective investigations, it was demonstrated that during laparoscopic myomectomy, morcellation without the use of a safe-bag was associated with an elevated recurrence rate and decreased long-term survival rate in cases of malignancy [12, 13]. There is a large body of literature regarding the utilization of safe-bags on sarcoma extension in patients who were first diagnosed with leiomyomas but were later discovered to have leiomyosarcoma on pathology and parasitic leiomyomas [11-13]. However, there is little research on local leiomyoma recurrence. In our study, it was found that removing the leiomyoma material via a safe-bag had no effect on recurrence. However, this result may be due to the small sample size. In recent years, safe-bags have been utilized in all laparoscopic myomectomies performed at our clinic in order to avoid the potential risk of cancerous spread.
According to Kotani’s study [7], the absence of pregnancy after myomectomy considerably raised the recurrence rate. Progesterone receptor modulators have been proven to diminish the size of UL and the intensity of associated symptoms [14-16]. In a study, the anti-progestational steroid mifepristone 5 mg daily for three months lowered UL volume considerably [17]. It has been questioned whether pregnancy-related hormonal changes have comparable effects on UL. Pregnancy or delivery following myomectomy also decreased the incidence of UL recurrence in our study sample, corroborating the findings of earlier observational studies [18, 19].
Cellular leiomyomas (CL) are fibroids that resemble leiomyomas and leiomyosarcomas. Taran et al. examined CL recurrence and clinical and pathological features. CLs were linked to the largest uterine mass diameter, menometrorrhagia, fewer leiomyomas, no endometriosis or adenomyosis, and a rapidly expanding leiomyoma as a surgical indication [20]. In terms of recurrence rates, the results of the study by Rathmound et al analyzing the clinical and histological characteristics of cellular myomas were comparable to those reported in Taran et al’s biggest CL series to date [20, 21]. This is also consistent with the reports demonstrating that a uterus with a single myomatous lesion grows more rapidly than one with numerous masses [22]. Additional research is required to determine whether the rapid growth phenotype is related to all single leiomyomas or only those with cellular histology abnormalities. In our study, it was found that the recurrence time of the cellular fibroids was statistically shorter. Furthermore, the rapid growth pattern of CL is demonstrated in consistency with the current literature. Although CL recurrence rates were comparable to UL recurrence rates in the report of Rothmund et al. [20], our analysis revealed a higher recurrence rate for CL.
The literature indicates that abnormal uterine bleeding (AUB) is the most common indication for hysteroscopic myomectomy, with percentages ranging from 60% to 84% [23]. In our study, 7 (63%) of 11 patients who underwent hysteroscopic myomectomy consulted a gynecologist for AUB and 4 (36%) for infertility, which is consistent with the literature. The success rates for hysteroscopic myomectomy described in the literature represent the myomectomy outcomes for all submucous myomas (Types 0, 1 and 2). Fibroids of type 2, which are technically more challenging to remove, are believed to have a lower success rate. Reoperation rates for hysteroscopic myomectomies range from 10% to 35% [24]. This rate can approach 50% in type 2 leiomyomas [25]. A second session for the total removal of the myoma is usually planned in the following months, which is not considered as a recurrence. However, even after the total removal of the myoma, the existence of new myoma nuclei may be encountered. In our study, recurrence was seen in 6 (54%) of 11 patients who had undergone hysteroscopic myomectomy, and the number of reoperations was 3, which was consistent with the literature [24-25].
The most significant limitation of this study is its retrospective design. The number of patients with submucous myomas and hysteroscopic operations in this study was apparently lower, though notable outcomes were obtained even in this group. Additionally, data from a particular institution may not be indicative of the community as a whole. Moreover, the outcome would be more generalizable if all patients who underwent myomectomy had undergone routine follow-up. A longer duration of follow-up may increase the probability of detecting a recurrence.
In conclusion, in this study evaluating the factors influencing UL recurrence in women who had myomectomy and were diagnosed with UL recurrence, it was found that patients with relapse were admitted to the hospital more frequently with symptoms of vaginal bleeding and pain at the initial presentation. The presentation type of the myoma was determined to be a risk factor for recurrence. This study also demonstrated that the recurrence rates following laparotomic and laparoscopic myomectomy were comparable, adding to a debate that is still unclear in the literature. The recurrence times of submucous leiomyomas and cellular leiomyomas were observed to be statistically significantly shorter. Patients who had pregnancy or delivery after myomectomy were found to have significantly lower rates of recurrence. The risk of recurrence, therefore, can be guided by a thorough evaluation of the clinical findings of the patients and an extensive pathological examination. However, prospective studies with larger populations are required for a comprehensive analysis of the clinical and histopathological factors affecting recurrence following myomectomy.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Şirin Aydın, Gülşen Doğan Durdağ, Didem Alkaş Yağınç, Şafak Yılmaz Baran, Songül Alemdaroğlu, Erhan Şimşek, Filiz Aka Bolat, Hüsnü Çelik. Clinical and histological determinants of uterine leiomyoma recurrence following myomectomy. Ann Clin Anal Med 2024;15(4):260-265
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Port-site infection following laparoscopic cholecystectomy
Yasir Mehmood 1, Muhammad Ayub 1, Suliman Ali Elsheekh 2
1 Department of Surgery, Faculty of Medicine, Northern Border University, 2 Department of Surgery, Prince Abdulaziz Bin Musaad Hospital, Arar, Saudi Arabia
DOI: 10.4328/ACAM.22088 Received: 2023-12-28 Accepted: 2024-02-23 Published Online: 2024-03-05 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):266-269
Corresponding Author: Yasir Mehmood, Department of Surgery, Faculty of Medicine, Northern Border University, Arar, Saudi Arabia. E-mail: dr.yasir@live.co.uk P: +966 559 075 2 26 Corresponding Author ORCID ID: https://orcid.org/0000-0003-0749-048X
This study was approved by the Local Ethics Committee of Bioethics (HAP-09-A-043) at Northern Border University (Date: 2022-11-17, No:15/44/H)
Aim: The study aims to assess the rate of port-site infection after laparoscopic cholecystectomy.
Material and Methods: This descriptive study was conducted in the Department of Surgery at Prince Abdulaziz Bin Musaad Hospital in Arar, Saudi Arabia, over a 12-month period. Patients with symptomatic cholelithiasis undergoing laparoscopic cholecystectomy were included to assess the rate of port-site infection. SPSS version 20 was used to analyze data on diagnosis, port site infection, and demography.
Results: 270 patients with an average age of 38.06 underwent laparoscopic cholecystectomy, including 192 females and 78 males. Thirteen cases (4.81%) of port-site infection were found; most of them involved females (12). Acute cholecystitis cases (10/13) showed higher rates of infection (p = 0.038). The umbilical port was the port site that was most frequently infected (p = 0.002). High BMIs greater than 30 kg/m2 were associated with 9 out of the 13 port site infections (69.2%), while 4 (30.7%) were associated with BMIs < 30 kg/m2. (p=0.01)
Discussion: The rate of port-site infection is 4.8% after laparoscopic cholecystectomy. Surgery in the acute phase and a high body mass index are associated with an increased rate of infection at the umbilical port site.
Keywords: Laparoscopic Cholecystectomy (LC), Port-Site Infection (PSI), Cholecystitis
Introduction
Modern surgical care has changed dramatically with the advent of laparoscopic surgery (LS). It has gained popularity among both surgeons and patients due to the reduced pain, speedy recovery, improved cosmesis, and decreased complications related to wounds [1].
Laparoscopic cholecystectomy is now considered the standard of care for symptomatic gallstones. This minimally invasive technique removes the gallbladder through relatively small abdominal incisions. Since 1987, when the first laparoscopic cholecystectomy was reported by Philips Mouret, this method has been successfully used for a wide range of abdominal, urological, and gynecological procedures [2].
Although laparoscopic cholecystectomy is generally believed to be a safe and effective procedure as compared to a traditional open cholecystectomy, one of its potential complications is port-site infection. It is described as an infection that occurs at the entry site of the laparoscopic instruments used during surgery. Port-site infection is not unusual after laparoscopic cholecystectomy. A systemic review of studies on perioperative antibiotic use in patients undergoing laparoscopic cholecystectomy revealed an infection rate of 2.4-5.2% [3]. Obesity, diabetes, advanced age, prolonged operative time, common bile duct stones, and conversion to open cholecystectomy are risk factors for port site infection (PSI) following LC [4].
According to Mukesh and colleagues’ research, a wound infection rate of 3.71 was identified; in 1.71% of those cases, it was only superficial, and in the remaining 2%, it was deep [5]. The umbilical port was the most frequently affected port, as revealed by a meta-analysis comprising 19 studies. This is most likely due to many local microbes inhabiting the umbilicus [6].
Port-site infection is a disappointing complication that outweighs the advantages of minimally invasive surgery. It increases the patient’s morbidity as well as damages the surgeon’s reputation. Our aim is to assess the rate of infection at the port site after laparoscopic cholecystectomies in our setup.
Aims
To assess the rate of port-site infection after laparoscopic cholecystectomy.
Material and Methods
This prospective study was conducted over a 12-month period in the Department of Surgery at Prince Abdulaziz Bin Musaad Hospital in Arar, Saudi Arabia. On admission, a complete history and physical examination, as well as the body mass index (BMI), were documented. To confirm the diagnosis, abdominal ultrasonography was performed. All male and female patients undergoing laparoscopic cholecystectomy for symptomatic gallstones were included. Patients with obstructive jaundice, pancreatitis, malignancy, and co-morbid conditions like cardiac or respiratory diseases, diabetes mellitus, and immunosuppression were excluded. After fulfilling the inclusion and exclusion criteria, 270 patients were included in the study. For participation in the study, written and informed consent was obtained.
All patients received an intravenous broad-spectrum antibiotic prior to anesthesia induction. Under general anesthesia, a qualified consultant laparoscopic surgeon performed a laparoscopic cholecystectomy. The pneumoperitoneum was created using the closed technique. The gall bladder was removed via an epigastric port using retrieval bags. After removing the cannula, the port sites were washed with normal saline. Antibiotics were given to the patients for 48 hours. On the 1st day after operation, most patients were discharged. The third, seventh, and tenth postoperative days were used to monitor the patients for port-site infection and later, if necessary. After taking a swab and changing their dressing every other day, patients with port-site infections were advised to take antibiotics. Data regarding demography, diagnosis, and port site infection was entered on a proforma.
Statistical analysis
The analysis of all the data was done with SPSS version 20. The data was presented as percentages and numbers. To tabulate the data, frequency distribution was utilized. The significance level was evaluated at 5%. To determine the significance of the relationship between related variables, a Chi square test was used, and P ≤ 0.05 was considered significant.
Ethical Approval
This study was approved by the Local committee of Bioethics (HAP-09-A-043) at Northern Border University (Date: 2022-11-17, No:15/44/H)
Results
This study included 270 cases of laparoscopic cholecystectomy over a period of 12 months. Males were 78 (28.9%) and females were 192 (71.1%). Participants were between the ages of 17 and 79, and the mean age was 38.06. The range of the body mass index was between 17.78 and 57.78. Most patients were obese (41.8%) and overweight (40%), whereas 17.8% were of normal weight as shown in Table.1. Thirteen patients out of a total of 270 patients (4.8%) developed port site infection (PSI) as depicted in Figure 1. Out of these 13 infected cases, 12 involved umbilical ports, while epigastric ports were involved in only one case (p = 0.002), which shows a significant relationship between umbilical ports and infection after laparoscopic cholecystectomy. Regarding gender, 12 out of 192 female patients developed PSI (6.25%), and one out of 78 male patients developed PSI (1.2%). The operative diagnosis was chronic cholecystitis in 138 cases and acute cholecystitis in 132 cases. The infection rate was higher in patients with acute cholecystitis (10), accounting for 76.92% of infected cases (p = 0.03), which is statistically significant as shown in Table.2.
When BMI is considered, 41.8% of people had a BMI of more than 30 kg/m2. Nine out of the 13 port site infections were linked to high BMIs exceeding 30 kg/m2, while four were linked to BMIs under 30 kg/m2, which shows a significant relationship (p = 0.01) between high BMI and port site infection as shown in Table.2.
Discussion
Surgery has been completely transformed by laparoscopy, and laparoscopic cholecystectomy is now considered the standard of care for symptomatic gallstones [7]. Although the procedure has several benefits over open cholecystectomy, there are some risks involved, such as port-site infection. Increased pain and longer hospital stays are linked to port-site infections, which may reduce the cost-effectiveness of this procedure.
In our study, 270 patients were included with age range of 17- 79 years with mean age 38.6. 71.1% of them were female, making up the majority. A study by Sultan in Iraq produced similar results verifying that majority (84%) of gallstone patients were female [8]. The body mass index was in the range of 17.78 to 57.78 in our study. Only 17.8% of the patients were of normal weight, with the majority being overweight (40%) and obese (41.8%).
The infection rate at the port site varies across different research studies, ranging from 2.4% to 6.7% after laparoscopic cholecystectomy [9,10]. In our study, the infection was present in 13 out of 270 cases, with a rate of 4.8%. This is comparable to a rate of 4.5% reported by Al-Naser (Iraq) [11]. A high infection rate (6%) was reported in Pakistan by Javeria et al. [12].
In a case-control study by Sajid comparing open and laparoscopic cholecystectomy, the reported port-site infection rate was around 1.6% in the laparoscopic group [13]. An infection rate of 2.2% was shown by Ganpathi et al. in another study that compared glove closure versus stitch closure of 5-mm ports in laparoscopic cholecystectomy [14]. In a Siddiqui and Tai randomized controlled trial comparing various skin closure techniques for laparoscopic ports, 1.5% of port site infections were reported [15].
The most frequently infected port site was the umbilical port, which was infected in 12 cases (92.3%) in our study. Epigastric port sites were infected in one case (7.7%) only. These results are like the study of Ravindranath GG et al. where umbilical port was the most infected port site (52.4%) [16]. Although an epigastric port was used for the retrieval of gall bladders in our study, the rate of infection was minimal, which could be attributed to the use of an endoglove for gallbladder extraction.
The operative diagnosis in our study was chronic cholecystitis in 132 cases and acute cholecystitis in 138 patients. The rate of infection at the port site was higher in cases of acute cholecystitis (9), accounting for 69.2% of the port site infection rates, which is statistically significant (p = 0.038). A study conducted at the DHQ hospital in Mirpur yielded similar results, indicating a port-site infection rate of 7.1%. Most port-site infections were linked to acute cases, with a 65:35 ratios between acute and chronic cases [17]. Similarly, 60% of port-site infections were seen in cases of acute cholecystitis, according to a study conducted by Naeem (2012) [18]. This may be caused by the gallbladder becoming edematous and having thick walls, or by bile or stones spilling out [19].
In terms of gender, PSI occurred in 12 of 13 (6.25%) female patients and one of 78 (1.2%) males. Females made up 12 of the 13 PSI cases, accounting for 92.3%. Similar results were observed in a study by Ahmed [20], which included 65.17% female patients and 34.83% male patients, with PSI being more common in female patients (7 out of 9 patients).
When we consider BMI, 40% of the patients were overweight and 41.8% were obese. Four of the 13 port site infections were found in overweight patients, while nine were found in obese patients. This shows a significant relationship between obesity and port-site infection (p = 0.01). Similar outcomes were observed in Arvind’s study, where patients with high BMIs (>30 kg/m2) experienced difficulties during the extraction of their gall bladders, causing bile and stones to leak out. There was a correlation between high BMI and port-site infection, as evidenced by the fact that three patients with low BMIs and ten with high BMIs experienced infection [21].
Conclusion
The rate of port-site infection is 4.8% after laparoscopic cholecystectomy. Surgery in the acute phase and a high body mass index are associated with an increased rate of infection at the umbilical port site.
Recommendation
Surgery in the acute phase and a high body mass index increase the risk of infection at the umbilical port site. Although the risk of infection at the port site is low after laparoscopic cholecystectomy, it can be avoided by carefully selecting cases and adhering to basic laparoscopic techniques.
Acknowledgment
The authors extend their appreciation to the Deanship of Scientific Research at Northern Border University, Arar, Saudi Arabia for funding the research work through the project number “MEDA-2022-11-1548”.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: Funded by the Deanship of Scientific Research at Northern Border University, Arar, Saudi Arabia. (MEDA-2022-11-1548)
Conflict of Interest
The authors declare that there is no conflict of interest.
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Yasir Mehmood, Muhammad Ayub, Suliman Ali Elsheekh. Port-site infection following laparoscopic cholecystectomy. Ann Clin Anal Med 2024;15(4):266-269
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The linking of amyotrophic lateral sclerosis disease-specific quality of life instruments to ICF with refined rules
Mert Doğan 1, Esra Arya 2, Ender Ayvat 2
1 Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Akdeniz University, Antalya, 2 Department of Neurological Rehabilitation, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
DOI: 10.4328/ACAM.22091 Received: 2023-12-29 Accepted: 2024-02-29 Published Online: 2024-03-09 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):270-276
Corresponding Author: Mert Doğan, Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Akdeniz University, Antalya. E-mail: mertdogan@akdeniz.edu.tr P: +90 242 310 61 03 Corresponding Author ORCID ID: https://orcid.org/0000-0001-7990-3365
Aim: Quality of life (QoL) has emerged as a significant concept in the domains of healthcare and medicine. Amyotrophic Lateral Sclerosis (ALS) reduces the QoL of individuals by affecting various systems. The aim of this study is to link ALS-specific QoL assessments to ICF components.
Material and Methods: The ALS assessment questionnaire (ALSAQ-40) and short form (ALSAQ-5), and the ALS-specific quality of life revised (ALSQoL-R) and short form (ALSQoL-SF) were linked to ICF using refined rules by two independent researchers.
Results: Statistical analysis results showed that the kappa value of 81.3% demonstrated almost perfect agreement between the researchers. A total of 115 concepts were defined in the study. Of the linked concepts, 54 were body functions, 54 were activity and participation, and 4 were environmental factors. All the instruments had items linked with items b152 “Emotional functions” and d330 “speaking” components.
Discussion: The majority of the items of the ALSAQ-5, ALSAQ-40, ALSSQoL-SF, and ALSSQoL-R were linked to the activity and participation categories of ICF. The ALSQoL-R, ALSQoL-SF, and ALSAQ-40 were linked mostly to body functions. It was seen that ALSQoL-R had the most unique linked concepts in body functions, and ALSAQ-40 had the most comprehensive linked concepts in the context of activity and participation. It can be recommended that ALS-specific QoL instruments to be developed in the future include domains of ICF, products and technology, natural environment and human-made changes to the environment, services, systems and policies, recreation, and leisure.
Keywords: ICF Linking, Quality of Life, Outcome Measure, Amyotrophic Lateral Sclerosis, Activity And Participation
Introduction
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease of the central nervous system that results in the loss of upper and lower motor neurons in the cortex, brain stem and spinal cord [1, 2]. According to recent studies, the incidence of ALS is between 0.6 and 3.8 per 100000 people, and prevalence is between 4.1 and 8.4 per 100.000 people. ALS is known to be 1-2-fold more common in males than females, and the age of disease onset has been reported to be 51-66 years [1]. ALS is categorized as sporadic or familial. The sporadic type accounts for approximately 90-95% of all cases, and the familial type for 5-10% of all cases due to their associated genetic inheritance factors [3, 4]. Muscle weakness, twitches, and cramps are the most common symptoms in both types of ALS [5, 6]. ALS reduces the QoL of individuals by affecting various systems [7].
Quality of life (QoL) has emerged as a significant concept in the domains of healthcare and medicine, and is now emphasised in both study and practice. The World Health Organization (WHO), the current definition of QoL is “An individual’s perception of their position in life in the context of the culture in which they live and in relation to their goals, expectations, standards and concerns” [8]. Understanding QoL is vital to be able to improve the symptom treatment, care, and rehabilitation of patients with ALS. QoL constructed within the strict boundaries of dependency has become even more crucial because of the progressive nature of ALS with a decline in life expectancy. Therefore, precise and disease-specific evaluation of QoL in patients with ALS is essential.
The International Classification of Functionality, Disability, and Health (ICF) is a comprehensive system designed to create a common language across different disciplines and fields to be able to improve the quality of service. The main categories of the ICF framework are functioning, disability, and contextual factors. Functioning and disability consist of body structures (s), body functions (b), and activity and participation (d). Contextual factors include environmental (e) and individual (pf) factors. The ICF presents a hierarchical taxonomy containing more than 1400 categories [9].
Earlier studies have linked the ICF to a diverse range of diseases [10-13]. The linking of disease-specific instruments to the ICF is thought to guide the appropriate selection of scales to assess the areas in which patients experience functional loss. To the best of our knowledge, there is no research linking ALS-specific QoL assessments with the ICF. Therefore, the aim of this study was to link QoL assessments specific to ALS with ICF components. In line with this, the research question of our study is as follows:
• To what extent are ALS-specific quality of life scales linked to the ICF?
• Which subcategories of the ICF can ALS-specific quality of life scales be linked with?
Material and Methods
The scales developed specifically for ALS and for evaluating QoL were determined with reference to the literature, and the scales used in this study were as follows:
The Amyotrophic Lateral Sclerosis Assessment Questionnaire (ALSAQ-40) was developed by Jenkinson et al. as a self-reported outcome measure to evaluate QoL specific to patients with ALS and motor neuron disease. The ALSAQ-40 includes 40 items in the five sub-parameters of physical mobility, activities of daily living/independence, eating and drinking, communication and emotional functioning [14]. The patient responses refer to the last two weeks. Each item is scored between 0 and 4 points with the total score obtained by dividing by the maximum score that can be obtained from the scale. The final ALSAQ-40 score ranges from 0 to 100, with lower scores indicating better QoL, and higher scores indicating lower functional levels[14].
The Amyotrophic Lateral Sclerosis Assessment Questionnaire Short Version (ALSAQ-5) is a revised version of the ALSAQ-40. The ALSAQ-5 consists of 5 items, each scored between 0 and 4 points by the patients, to give a total score then divided by the maximum score. The final score of the ALSAQ-5 varies between 0 and 100, with lower scores indicating better health, and higher scores indicating lower functional levels. In a previous study, the ALSAQ-5 showed a strong correlation with the ALSAQ-40 [15].
The Amyotrophic Lateral Sclerosis Specific Quality of Life-Revised (ALSSQOL-R) is a self-report outcome measure that evaluates QoL in patients with ALS. The ALSSQOL-R consists of 50 items in six sub-domains of negative emotion, interaction with people and the environment, intimacy, religiosity, physical symptoms, and bulbar function. Scoring is applied to 46 items, each scored between 0 and 10 points. The total score of the ALSSQOL-R ranges from 0 to 460, and the average score is calculated as the total of all the items divided by 46. A higher average score indicates better functional levels for QoL[16].
The Amyotrophic Lateral Sclerosis Specific Quality of Life- Short Form (ALSSQOL-SF) is a revised version of the ALSSQOL-R. The 50-item scale was revised to the short form of 20 items in 2018 [17]. Each of the 20 items is scored between 0 and 10 points, to give a total score range of 0 to 200. The average score is calculated as the total of all the items divided by 20. A higher average score indicates better functionality for QoL [17].
The ICF Linking Process
The ICF linking was made within the framework of the refined association rules set by Cieza et al. in 2016 [18]. The linking process was performed in three stages. In the first stage, the researchers investigated each item of all scales in order to identify main and secondary concepts. In the second stage, two researchers (MD, EAR) examined the perspectives and responses of each item. The perspectives were categorized as “Appraisal, Need or Dependency, Descriptive; Capacity and Descriptive; Performance”, and responses were categorised as “Intensity, Frequency, Agreement, Confirmation and Qualitative Attributes”. In the second stage, the main and secondary concepts of the relevant items were independently linked using an online website (https://apps.who.int/classifications/icfbrowser/). Concepts that could not be linked were classified as not definable; general health (ND-GH), not definable; physical health (ND-PH), not definable; mental health (ND-MH), not covered by the ICF (NC). In the third stage, three researchers (MD, EAR, and EA) came together and reviewed all the independently conducted stages. Disagreements were discussed. In cases of disagreement, we utilized a majority rule approach and a consensus was reached on linking. Additionally, if consensus was not reached, we consulted an external expert (EA) in ICF coding to provide an objective perspective and final decision on the appropriate codes.The language of all the materials used in the research was English.
Statistical Analysis
The study was conducted between December 2022 and February 2023. Using SPSS vn. 26.0 software (IBM Corp., Armonk, NY, USA), the Kappa score was calculated to determine agreement between the evaluators. A Kappa score in the range of 0-1 and above 0.61 indicates good agreement [19]. Frequency analysis was used to examine the distribution of scales for the ICF parameters.
Ethical Approval
Ethical and scientific rules were followed in all stages of the study; no changes were made to the data included in the study. Datas open to access on the internet were used in the study. Therefore, ethics committee approval is not required. All procedures performed within the scope of the research are in compliance with the “Declaration of Helsinki.
Results
The results of the statistical analysis showed a kappa score of 81.3%, demonstrating almost perfect agreement between the researchers (p<0.001). Within the scope of this study, 116 items of four scales were examined, and 115 concepts were defined. Of the 115 concepts, 4 could not be linked to any ICF codes. These were defined as NC (2), ND-GH (1), and ND-MH (1), respectively. Of the linked concepts, 54 were body functions, 54 were activity and participation, and 4 were environmental factors. According to the perspective classification, 101 of the 116 items were determined as “appraisal” and 15 as “descriptive; capacity”. According to the response classification, 38 of the 116 items were determined as “intensity,” 57 as “frequency,” and 21 as “agreement.”
All concepts for the ALSAQ-5 were linked with ICF codes in Table 1. In the ALSAQ-40, 39 of the 40 concepts were linked with ICF in Table 1. In the ALSSQoL-R, 49 of the 50 concepts and all concepts for ALSSQoL-SF were linked with ICF codes in Table 2 and Table 3.
Discussion
Due to the progressive nature of ALS, both life expectancy and QoL of patients are adversely affected by the severity of the disease. The ICF allows many chronic and progressive diseases, such as ALS, to be examined in perspectives of a biopsychosocial model in accordance with patient expectations. Moreover, the linking of current instruments with ICF helps in the selection of appropriate assessments and treatments, thereby improving the quality of clinical decision-making processes and healthcare services. From this perspective, the results of this study can be considered to contribute to the success of treatment and rehabilitation of patients with ALS and to the promotion of disease-specific core set development processes. The most important results of this study were that all but one item for the 4 concepts were linked with the ICF, and all the items of the ALSAQ-5 and ALSSQoL-SF, which are among the QoL outcomes developed and used specifically for individuals with ALS, were linked with ICF.
Previous studies have stated that ALSSQoL-R, ALSSQoL-SF, ALSAQ-40, and ALSAQ-5 have been used to evaluate the disease-specific QoL in individuals with ALS [20]. In addition to these instruments, the Sickness Impact Profile (SIP), and Short Form-36 (SF-36) have been used to assess health-related generic QoL, and the WHOQOL-Bref, McGill QoL Questionnaire (MQoLQ), Schedule for the Evaluation of Individual QoL (SEIQoL) has been used to assess global QoL of ALS patients [7]. Bernardelli et al. conducted a study based on refined rules of ICF linking for the SF-36 in 2021. A total of 67 concepts were identified, 49 of which could be linked to ICF. Approximately 22.4% of the concepts were linked to body functions, and 77.6% were linked to activity and participation components [21]. Prodinger et al., Geyh et al. and Cieza et al. similarly stated that SF-36 is mostly linked with the activity and participation component of the ICF [22-24]. In a systematic review conducted by Ballert et al., participation assessment tools were examined in terms of ICF linking. According to the results of the study, 63 concepts were determined to link SF-36 with ICF, and 22.2% of these concepts were linked to body functions, 52.4% to activity and participation, and 4.8% to environmental factors. In addition, 59.4% of the concepts for the SIP scale and 22.7% of the defined concepts for the WHOQoL-BREF scale were linked to activity and participation [25]. The results of the current study showed that the majority of the items of the ALSAQ-5, ALSAQ-40, ALSSQoL-SF, and ALSSQoL-R were linked with activity and participation parameters of ICF, which was consistent with the literature. To the best of our knowledge, there are no other studies in the literature that have examined the linking of disease-specific QoL instruments with ICF. From the findings of this study, it was concluded that the ALSAQ-5 assessed activity and participation parameters the most. However, the ALSAQ-40 had the most distinct association relative to the number of questions when considering the depth of coverage for the linked concepts. When diversity in perspective classification is required, ALSQoL-R has the most unique linking of any disease-specific QoL instrument for ALS. It was also observed that the items for the ALSQoL-SF were linked with activity and participation parameters at similar rates to those previously reported in the literature, and all of the concepts could be linked within the scope of ICF. The findings of the current study demonstrate that generic and global QoL instruments and ALS-specific QoL instruments are similar in the context of rates for activity and participation.
Bernardelli et al. showed that the linked concepts for SF-36 were distributed under the umbrella of general tasks and demands (d2), mobility (d4), self-care (d5), domestic life (d6), major life areas (d8), community, social and civic life (d9) and mental functions (b1) categories of ICF [21]. Similarly, according to Ballert et al., linked concepts for the SF-36 were distributed under the d4, d5, d8, and d9 categories. It has also been shown that concepts for SIP were linked with all d categories, and the linked concepts of WHOQoL-BREF were linked with d4, d7, d8, and d9 [25]. According to the results of the current study, the categories b1, and communication (d3), d4, d5 were linked with the short version of ALSAQ-40 (ALSAQ-5), and in addition to these categories, sensory functions and pain (b2), voice and speech functions (b3), functions of the cardiovascular, haematological, immunological and respiratory systems (b4), functions of the digestive, metabolic and endocrine systems (b5), neuromusculoskeletal and movement-related functions (b7), d1 and d6 categories were linked with ALSAQ-40. In addition, categories b1, b2, b4, b7, d3, d7, d9, and supports and relationships (e3) were linked with ALSSQoL-SF; categories b5, genitourinary and reproductive functions (b6), and d5 were linked to ALSSQoL-R. These differences from the literature can be attributed to the fact that the instruments examined in this study covered the specific symptoms of ALS. This emphasizes the importance of using disease-specific QoL scales. Another important piece of evidence from the current study is that all the instruments had items linked with items b152 “Emotional functions” and d330 “speaking” components. Therefore, clinicians and researchers who aim to evaluate these concepts in ALS patients should use all scales related to the study. In addition, fatigue, which is an important factor affecting disease progression, seems to be associated with all scales except the ALSAQ-5.
When the differences between the instruments were examined, the ALSAQ-40 was found to be more inclusive in activities related to speech, voice, and mental functions; self-care; domestic life; and learning and applying knowledge. The ALSSQoL-R was found to be more inclusive in relation to ICF parameters in terms of mental, genitourinary, and reproductive functions, interpersonal communication, and social life. The ALSSQoL-R and ALSSQoL-SF can be considered to be useful tools for determining the functional capacity of patients since they contain a descriptive perspective. However, domains such as “products and technology, natural environment and human-made changes to environment, services, systems and policies, recreation, and leisure” that positively affect the QoL of patients with ALS and contribute to functionality and life span could not be associated with any of the instruments examined within the scope of this research. Therefore, it can be suggested that prioritizing these areas in the instruments to be developed in the future will contribute to the definition of QoL and inclusiveness of ICF. The results obtained from this study can be considered to contribute to target-oriented intervention approaches by providing guidance for the selection of an appropriate evaluation module.
Conclusion
For the first time in the literature, ALS-specific QoL instruments have been found to be mostly linked to ICF. The data obtained could contribute to the creation of a core set for ALS in the future and to the process of conducting clinical decision-making processes. The results of this research will also pave the way for the inclusion of the ICF perspective in the development of ALS-specific QoL instruments in the future.
Clinical Implications
• The ALSAQ-40 is identified as offering the most comprehensive coverage in terms of depth for linked concepts, making it a valuable tool for a broad assessment of ALS patients’ needs.
• The ALSQoL-R is noted for its unique linking among disease-specific QoL instruments for ALS, providing a diverse perspective classification, essential for holistic patient assessment.
• Emotional functions and speaking components (b152 and d330 of ICF) are linked with all instruments, suggesting their essential role in evaluating ALS patients.
• The results provide crucial guidance for selecting appropriate evaluation modules, contributing to targeted intervention approaches in ALS patient care.
Limitations
The most important limitation of this study was the small number of instruments examined. There is a need for further research of instrument linking, specific to the symptoms of the disease (severity, cognitive and behavioral status, etc.), so that ALS can be more extensively studied from the perspective of ICF. It would also be of benefit to correlate linking studies conducted on different nationalities and cultures to be able to generalize the obtained data to all populations. Another significant limitation of our research is that the ICF does not differentiate between the domains of activity and participation. We believe that this presents a challenge in interpreting the effects of ALS on patient activities and their participation in various life areas. Further, we suggest the need for a more refined classification system within the ICF or supplementary methods that can help delineate these two important components more clearly in future research.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Investigation of the effect of white tea on sortilin and interleukin-6 levels in retroperitoneal adipose tissue in high fat diet-fed rats
Mehtap Atak
Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
DOI: 10.4328/ACAM.22094 Received: 2024-01-03 Accepted: 2024-02-29 Published Online: 2024-03-07 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):277-281
Corresponding Author: Department of Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, 53020, Rize, Turkey. E-mail: mehtap.atak@erdogan.edu.tr P: +90 507 208 96 82 Corresponding Author ORCID ID: https://orcid.org/0000-0002-9451-906X
This study was approved by the Local Committee of Recep Tayyip Erdoğan University (Date: 2023-02-14, No: 2023/15)
Aim: A high-fat diet (HFD) leads to systemic low-grade inflammation associated with various metabolic and inflammation-related diseases. White tea (WT), rich in catechins and potent antioxidants, plays a pivotal role in disease prevention. This study aimed to explore the impact of white tea known for its beneficial health effects like antioxidants, anti-obesity, anti-diabetic, and anti-inflammatory properties on the levels of sortilin and interleukin-6 in the retroperitoneal adipose tissue of rats fed a high-fat diet (HFD).
Material and Methods: The study utilized 24 male Sprague-Dawley rats, aged 6-8 weeks, categorized into three groups: control, HFD, and white tea in addition to HFD. The rats were allowed ad libitum access to food for 12 weeks, and the HFD+WT group received a daily oral gavage of 5 mg/kg of white tea. Weight measurements were recorded on a weekly basis, and the experiment was terminated upon achievement of the obesity criterion. At the end of the study, the levels of sortilin and IL-6 in retroperitoneal adipose tissue were measured by ELISA, while serum glucose, triglyceride, and total cholesterol levels were assessed using a colorimetric spectrophotometric technique.
Results: A statistically significant difference was observed between the control group and the HFD group for glucose, cholesterol sortilin and IL-6 levels as well as final live weight of the rats (p < 0.05).
Discussion: It was concluded that WT has a significant effect on preventing weight gain and reducing serum glucose and cholesterol levels. However, there were no observed alterations in sortilin and IL-6 levels in the retroperitoneal adipose tissue between HFD and HFD+WT group. This lack of change may be attributed to the low bioavailability of the bioactive compounds in WT following dietary intake.
Keywords: White Tea, IL-6, Sortilin, Rat, High Fat Diet
Introduction
The consumption of a high-fat diet (HFD) can lead to chronic low-level inflammation, which is associated with various metabolic and inflammation-related diseases [1]. Obesity is characterized by a low-grade inflammatory process. It is a chronic pathological condition characterized by an increase in the number and volume of body fat cells due to an energy imbalance resulting from increased energy intake and decreased physical activity [2]. Adipose tissue (AD) functions as an endocrine organ that secretes various adipocytokines associated with inflammation, including IL-6, TNF-α, IL-1β, and IL-8 [3].
Sortilin is a transmembrane protein encoded by the Sort1 gene located in the 1p13 locus, with a molecular weight of 95 kDa. While its primary expression occurs in neurons, adipocytes, hepatocytes, and macrophages, it is also found to be expressed in nearly all tissues. Sortilin has been reported to be associated with dyslipidemia, atherosclerosis, inflammation, and obesity, particularly in neurodegenerative diseases [4]. Sortilin plays a role in obesity by binding to the adipogenic limiting receptor δ-like protein 1 (DLK1) in 3T3-L1 preadipocytes, inhibiting adipogenic differentiation, and functioning as a component of the GLUT4 storage vesicle (GSV) involved in insulin-dependent glucose uptake. Additionally, Sortilin is involved in the development of Type 2 diabetes by inhibiting GSV translocation in adipocytes and myocytes [5].
Tea, a natural herbal beverage produced from Camellia sinensis (L.), belonging to the Theaceae family, is cultivated in over 30 countries globally and is widely consumed for its numerous health benefits and refreshing taste [6]. Various types of tea, such as green tea, black tea, white tea, and oolong tea, can be derived from the leaves and buds of Camellia sinensis. These different types of tea are categorized by the level of fermentation undergone by the freshly picked leaves or buds during the production process.
White tea is named after the white hairs that cover the buds during harvesting. White tea, along with green tea, is often considered the least processed type of tea. It is unfermented or only lightly fermented, and rich in polyphenolic flavonoid-derived compounds known as catechins (flavan-3-ols). It exhibits higher antioxidant activity compared to black and green teas due to its minimal processing. Its rarity makes it a unique choice for tea enthusiasts [7]. White tea contains high levels of catechins, such as epigallocatechin (EGC), epicatechin gallate (ECG), epicatechin (EC), and especially epigallocatechin gallate (EGCG), which significantly contribute to its bioactivities. Additionally, white tea has been reported to contain powerful antioxidant substances that offer numerous benefits in protecting against diseases. While some studies suggest that white tea may serve as a useful complementary or alternative treatment for obesity and its associated complications, the precise positive effects of white tea on obesity have not been fully elucidated [8].
Based on current information, the aim of this study is to examine the effect of white tea, obtained from the Camellia sinensis plant cultivated in Rize and its surrounding regions, on the levels of sortilin and interleukin-6 in the retroperitoneal (RP) fat tissues of rats that were fed a high-fat diet (HFD).
Material and Methods
Animals and procedures
Twenty-four male Sprague Dawley rats, weighing between 250-300 grams and aged 6-8 weeks, were obtained from the Recep Tayyip Erdoğan University Experimental Animal Implementation and Research Center. All animals were handled according to the Laboratory Animal Care and Use protocols outlined in both the National and International Research Council Guides. They had ad libitum access to a control diet (Bayramoğlu Em ve Un San. Tic. A.S., Whole Pellet Rat Feed) for one week before being randomly divided into three groups, each containing eight rats, and were housed in transparent polyethylene cages.
Group 1 served as the control group, Group 2 was fed an HFD, and Group 3 was given white tea in addition to HFD fed (HFD+WT). To induce an obesity model, rats were given HFD (Arden Research & Experiment, comprising 45% of calories from fat) ad libitum. In the HFD+WT group, rats were administered white tea (5 mg/kg/day) orally by gavage in addition to the HFD.
The white tea plant was obtained from the General Directorate of Tea Enterprises (Çaykur A.Ş. Rize, Turkey). White tea was steeped in boiled drinking water at a dose of 5 mg/kg per rat for 10 minutes and then allowed to cool to room temperature. White tea was freshly prepared and applied daily. Obesity is defined as an increase in body weight of at least 20% compared to the control group [9]. The experiment was terminated when the rats in the HFD group reached the 20% weight gain criterion in comparison with the control group. After a 12-hour fasting period, the rats were anesthetized with ketamine hydrochloride. Blood samples were collected from the intracardiac left ventricle before the rats were euthanized under anesthesia/tranquilizer.
Biochemical analysis
The serum triglyceride (TG), total cholesterol (TC), and glucose levels were measured by the routine clinical biochemistry laboratory using the Abbott Architect c 16000 autoanalyzer and commercial kits. The measurements were conducted in triplicate using the spectrophotometric method.
ELISA Assays
100 mg of RP-AT were homogenized in 1 mL of pH 7.4, 0.01 M PBS buffer using the TissueLyser II Qiagen for 5 minutes. Subsequently, the homogenized tissue was centrifuged at 2000g for 10 minutes. The resulting supernatant was transferred to other Eppendorf tubes for further analysis. The protein concentration of the sample was assessed using the commercially available Bicinchoninic Acid Method and BCA assay kit (Sigma cat no: QPBCA-1KT), following the instructions provided with the kit. ELISA kits were used to determine the levels of sortilin (Bt Lab, Cat No. E1429Ra) and IL-6 (Bt Lab, Cat No. E0135Ra) in RP-AT.
Statistical analysis
All data were analysed using SPSS 18.0 (IBM, Armonk, NJ, USA) software. The suitability of the obtained data for normal distribution was assessed using the Kolmogorov-Smirnov test. The data’s central tendencies were expressed as the arithmetic mean (X) and standard deviation (SD) since they were parametric. Variance analysis among groups was conducted using the One-Way ANOVA followed by the Tukey’s post hoc test, considering a p-value of <0.05 as statistically significant.
Ethical Approval
This study was approved by the Local Committee of Recep Tayyip Erdoğan University (Date: 2023-02-14, No: 2023/15)
Results
Body weight change
The weekly change in body weight of the rats is illustrated in Figure 1. Corresponding to the macroscopic images, the HFD group displayed the highest weight gain, whereas the HFD + WT group exhibited the lowest. Statistical analysis indicated a significant difference in weekly weight gain between these two groups (p < 0.01).
Biochemical Results
When comparing serum TC levels among the groups, the HFD group had the highest TC levels, while the CD group had the lowest. Regarding TC levels, the HFD group showed a statistically significant difference compared to other study groups (p < 0.05). In the analysis of serum TG levels, no statistically significant difference was observed between the study groups (p > 0.05).
In the comparison of serum glucose levels across groups, the HFD group demonstrated the highest glucose levels, whereas the CD group showed the lowest. The serum glucose level in the HFD group was found to be statistically significantly higher than that of the CD group (p < 0.05). Although the serum glucose level in the HFD + WT group was lower than that of the HFD group, this difference was not statistically significant (p > 0.05). The serum levels of TC, TG, and glucose are detailed in Table 1.
The levels of sortilin and IL-6 in the RT-AT among the study groups are presented in Figure 2. Analysis of sortilin levels in RP-AT showed that the RP sortilin levels in the HFD and HFD+WT groups were higher than those in the CD group (p < 0.05). The sortilin levels in RP-AT were comparable in between the HFD and HFD+WT groups. Analysis of IL-6 exhibited a pattern similar to sortilin levels. RP IL-6 levels were the highest in the HFD group (p < 0.05).
Data are given as mean ± SD. One-Way ANOVA – Tukey’s post hoc test.
* Statistically significantly different from other groups (p<0.05).
Discussion
White tea has been reported to have protective effects against various health conditions, including cardiovascular disease, cancer, diabetes, obesity, central nervous system disorders and microbial diseases. These potential benefits could be due to its cardioprotective, antidiabetic, neuroprotective, anticarcinogenic, antimutagenic, antimicrobial, and anti-obesity effects, as well as its high antioxidant and anti-inflammatory capacities [8].
Our study aimed to investigate the effect of white tea on body-weight gain, levels of sortilin, and IL-6 in retroperitoneal adipose tissue. We examined these factors in relation to changes in serum glucose, TC, and TG levels, as high levels of these factors are known to be closely associated with HFD-fed rats. When comparing the weight changes among the groups in this study, HFD + WT group showed lower weight gain, suggesting a potential inhibitory impact of white tea on fat tissue accumulation. Prior research has demonstrated that various types of tea (black, green, white, and oolong) can prevent weight gain in rats fed a HFD [10]. Another study revealed that tea reduced body weight and accumulation of white fat in mice with diet-induced obesity, as well as preventing hepatic steatosis. A study comparing the effects of six types of tea found white tea to be the most effective in preventing obesity [11]. Consistent with these findings, our study shows that white tea can prevent weight gain in HFD-fed mice aligns. White tea has been reported to exhibit its antiadipogenic and antilipemic effects by suppressing adipogenesis, fatty acid synthesis, and lipid absorption, while also stimulating beta-oxidation and lipolysis [1,11-13]. Studies suggest that white tea extracts may have a beneficial effect on lipid metabolism and may therefore help to modulate the metabolic syndrome. In our study, the HFD + WT group showed reduced serum TG and TC levels. Previous studies investigating the impact of white tea on obesity have indicated that supplementing white tea in HFD-fed rats significantly reduces TG, TC, and LDL-C levels while increasing HDL-C levels [14,15]. The HFD+WT group of our study had a statistically significant reduction in serum TC, whereas the decrease in serum TG was not statistically significant. Some studies have noted that while white tea decreases serum TC levels in HFD-induced obese rats, it does not significantly affect serum TG levels [10,16]. In this regard, our study findings align with the results from Wang et al. and Ma et al. [10 and 16] The effects of white tea on serum lipid levels may vary due to differences in experimental models.
In the present study, we observed a decrease in serum glucose levels in the HFD + WT group when compared to other groups. Consistent with existing literature, white tea (WT) exhibited an antidiabetic effect. Previous studies administering white tea to pre-diabetic and diabetic rats have reported reductions in serum glucose levels and improvements in insulin tolerance [13,17-18]. Conversely, other reports indicate that white tea enhances glucose tolerance by significantly reducing blood glucose in prediabetic rats, yet it does not affect serum insulin and fructosamine levels [19]. In our study, the addition of white tea to rats alongside HFD resulted in reduced blood glucose levels. Our findings align with the literature, demonstrating the antidiabetic effect of white tea consumption. Studies in the literature have consistently shown that white tea has an anti-diabetic effect, with similar results in various experimental models.
Obesity-induced inflammation involves an upsurge in the number and activation of immune cells, resulting in the production of pro-inflammatory cytokines such as TNF-α and interleukins [20]. Obesity is characterized by an increase in the secretion of several inflammatory molecules, including IL-6 from white adipose tissue, which has consequences for other organs and systems [21]. In our study, we investigated the anti-inflammatory effect of white tea by analyzing IL-6 levels in RP-AT. A significant increase in IL-6 levels was observed in RP-AT of HFD-fed rats compared to those fed the control diet. This finding is consistent with the results of the study by Santos et al., which demonstrated increased levels of IL-6 in adipose tissue of HFD-fed mice [22]. Likewise, Van der Heijden and colleagues state that HFD induced obesity leads to low-grade inflammation in adipose tissue [23]. However, our study revealed that the white tea treatment showed no significant effect in reducing IL-6 levels in RP adipose tissue of HFD group. Although research on the effect of white tea on inflammation is limited, it is suggested that the phenolic compounds in its composition might exhibit anti-inflammatory properties. However, the present study found that white tea had no significantly effect on IL-6 levels in RP-AT. In a meta-analysis study by Haghighatdoost and Hariri, it was mentioned that bioactive compounds did not notably affect the C-reactive protein level but did lead to a significant decrease in TNF-α levels [17]. It has been proposed that the limited bioavailability of bioactive compounds in tea following dietary intake might account for the observed absence of anti-inflammatory effects in mild inflammation [24]. In our study, the lack of an effect on IL-6 levels in RP-AT by white tea supplementation alongside the HFD could possibly be attributed to a decline in its bioavailability post-dietary intake or the relatively low administered dose (5mg/kg).
Sortilin plays a role in the synthesis and secretion of proteins associated with lipid catabolism in adipocytes. Reports suggest that the reduction in sortilin levels within adipose tissue during obesity primarily stems from impaired insulin signaling, specifically the inhibition of the insulin/PI3K/AKT signaling cascade [25]. As per reports, the formation of GSVs and insulin responses in preadipocytes (3T3-L1) necessitate the presence of sortilin. Glucose uptake is significantly reduced in the absence of sortilin [5]. In our study, we observed that the amount of RP-AT sortilin was higher in the HFD-fed group than in the CD group (p < 0.05). However, no statistically significant difference (p > 0.05) was observed in the amount of sortilin when white tea was administered with HFD. The literature suggests that low levels of sortilin in adipose tissue are expected in obesity. However, the results of our study on sortilin levels were not consistent with previous research, possibly due to the use of a different animal species in the experimental model.
Conclusion
In this study, the potential protective effects of white tea against various health conditions were explored, considering its established properties like anti-inflammatory, antioxidant, and disease-fighting capabilities. The research aimed to understand the effect of white tea on body-weight gain, levels of sortilin and IL-6 in RP-AT, and changes in serum glucose, TC, and TG levels associated with obesity in HFD-fed rats. While the study hinted at a potentially inhibitory effect of white tea on weight gain in the HFD + WT group, consistent with prior research, complexities emerged regarding its effect on serum lipid levels and IL-6 in adipose tissue. Although the findings aligned with some existing studies, discrepancies arose concerning the impact on serum TG levels and IL-6 in RP-AT. The study highlighted the need for further investigation into the mechanisms underlying the effects of white tea, particularly in relation to inflammation and lipid metabolism, suggesting that the observed discrepancies might be due to differences in experimental models or bioavailability following dietary intake.
Conflict of Interest Statement: The author has no competing interests.
Statement of support and acknowledgement: I would like to express my gratitude to Eda Yilmaz Kutlu for her assistance during the writing phase.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Mehtap Atak. Investigation of the effect of white tea on sortilin and interleukin-6 levels in retroperitoneal adipose tissue in high fat diet-fed rats. Ann Clin Anal Med 2024;15(4):277-281
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The relationship between depression and anxiety levels, and adaptation to the disease in patients with chronic heart failure
Hacer Kuzey 1, Sevinç Mersin 2
1 Department of Cardiology, Koşuyolu High Specialization Education and Research Hospital, İstanbul, 2 Department of Psychiatric Nursing, Faculty of Health Sciences, Bilecik Şeyh Edebali University, Bilecik, Türkiye
DOI: 10.4328/ACAM.22099 Received: 2024-01-07 Accepted: 2024-02-29 Published Online: 2024-03-14 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):282-286
Corresponding Author: Sevinç Mersin, Department of Psychiatric Nursing, Faculty of Health Sciences, Bilecik Şeyh Edebali University, Bilecik, Türkiye. E-mail: sevinc.mersin@bilecik.edu.tr P: +90 228 214 13 84 Corresponding Author ORCID ID: https://orcid.org/0000-0001-8130-6017
This study was approved by the Ethics Committee of Okan University (Date: 2021-03-31, No: 135)
Aim: This study aimed to determine the relationship between depression and anxiety levels, and adaptation to disease of patients with chronic heart failure.
Material and Methods: This descriptive and cross-sectional study was conducted with 192 patients with chronic heart failure between June-October 2021 in Türkiye. Data were collected using the Information Form, the Hospital Anxiety and Depression Scale and the Adaptation to Chronic Illness Scale.
Results: The mean age of patients was 66.74±12.95. The mean of the Hospital Anxiety and Depression Scale and Adaptation to Chronic Illness Scale scores of patients were found as 10.55±4.41 (0-21), 11.13±4.03 (0-21) and 72.42±12.15 (25-125), respectively. A statistically significant negative relationship was determined between Hospital Anxiety and Depression Scale, and Adaptation to Chronic Illness Scale scores.
Discussion: According to the results of the study, increasing the patients’ level of adaptation to the illness can reduce their anxiety and depression levels. For this reason, it is recommended that professionals enhance their ability to help chronic heart patients adapt to their illness in order to increase the psychological well-being of such patients.
Keywords: Chronic Disease, Heart Failure, Depression, Anxiety, Adaptation to Chronic Illness
Introduction
Adaptation to the disease can be defined as the patient’s choosing to apply the treatment recommended by the doctor and the care plan created by the nurse [1-3]. The process of adaptation to the disease may vary according to the patient’s physical, psychological, and socio-cultural characteristics, personality structure, lifestyle, duration of treatment and social support received [1, 3, 4]. In heart failure patients; long-term treatment, frequent hospitalizations, and patients’ quality of life affect adaptation to the disease. At the same time, adaptation to the disease also affects these processes [5]. It was determined that the patients’ adaptation to the treatment and care reduced their repeated hospitalizations [6, 7]. Personal preparation for treatments and care, explaining them in detail to the patient, and including the patient in this process increase the patient’s adaptation. In patients with heart failure, it is observed that the patient does not have sufficient information about the treatment, the treatment continues for a long time, there is little or no social support, and adaptation with the treatment doesn’t not occur with advancing age [5-8].
Heart failure patients may develop symptoms of burnout, anxiety and depression. This causes difficulties in managing and maintaining the patient’s disease. Studies have shown that chronic heart failure patients experience economic difficulties [1, 3, 4, 9, 10], death anxiety is intense [11], they experience intense anger feelings [12, 13], and their stress levels are high [14]. In addition, it has been determined that the frequency of depression is common in heart failure patients [14, 15]. Also, the socio-economic level, insufficient support of family members, and the chronicity of the disease increase the depression and anxiety levels of the patients, leading to an increase in the cost of treatment [4, 9, 12, 14, 15]. Sensory reactions such as anger due to depression and anxiety, non-adaptation with treatment, closure of communication, sadness, denial, and non-acceptance are common in patients [2, 13-15].
The positive results of treatment and care in chronic diseases are directly related to the adaptation levels of the patients [2-4]. Every individual adapts to the problems in his life to a certain extent. The disease is a condition that disrupts the harmony of the individual [4]. In chronic diseases, the problem of adherence to treatment causes failure in treatment [4, 5, 7]. First of all, it is necessary to recognize psychiatric disorders such as anxiety and depression, which prevent the individual from complying with treatment, and to prepare a treatment plan in this direction [2-4, 12, 14]. With the adaptation with the treatment, the duration of hospitalization decreases, repeated hospitalizations are prevented, the cost of treatment decreases, and the individual’s belief in the success of the treatment of the disease increases [1, 3, 4-7, 10].
Depression and anxiety in patients with chronic diseases such as heart failure; negatively affects the patient’s adaptation to the disease and quality of life. In addition, it adversely affects the patient’s benefit from treatment and symptom control [1, 5, 7, 10, 11]. Evaluating the mental health as well as the physical health of the patient with heart failure and providing holistic care to the patient positively affect the course of the disease as well as reduce the level of depression and anxiety [4, 6, 11, 14]. For this reason, it is important for the patients to adapt to the disease and to recognize the psychiatric disorders that may affect it by the professionals. In light of this information, the aim of this study was to determine the relationship between depression and anxiety levels of patients with chronic heart failure and their adaptation to the disease.
Material and Methods
This descriptive and cross-sectional study was conducted with patients followed up with a diagnosis of chronic heart failure in the Cardiology Clinic of a Training and Research Hospital in Türkiye. At least 192 patients were required for the sample, with 95% confidence interval, 5% error, 0.5 effect size, and 80% power analysis to represent the population. The study was conducted in 192 patients between June and October 2021. The patients participating in the study did not have any language problems or a psychiatric diagnosis. The patient’s communication problem and psychiatric status were determined both by examining the patient file and by the evaluation of the responsible doctor and nurse. Data were collected by the researcher face to face. It took approximately 30 minutes for each participant to complete the questionnaires.
Instruments
Data were collected using the Information Form, the Hospital Anxiety and Depression Scale and the Adaptation to Chronic Illness Scale.
– Information Form: It included questions about the personal and the disease of the patients.
– Hospital Anxiety and Depression Scale (HAD): It was developed by Zigmond and Snaith in order to evaluate the emotional state of patients [16]. Its Turkish validity and reliability were tested by Aydemir et al. [17]. This scale, which measures anxiety and depression levels, is a 4-point Likert scale (lowest 0, highest 3). 7 items are associated with anxiety and 7 items are associated with depression. The total score for anxiety and depression ranges from 0 to 21. A high score indicates a high level of depression and anxiety. The cut-off point in the scale was determined as 10 for anxiety and 7 for depression [17]. In this study, the Cronbach Alpha were determined as 0.91 and 0.83.
-Adaptation to Chronic Illness Scale (ACIS): The scale was developed by Atik and Karatepe in order to determine the level of adaptation to disease of individuals with chronic diseases [2]. The scale is a five-point Likert type and has a total of 25 items (1: disagree, 5: totally agree). It was 3 sub-dimensions. These are “Physical Adaptation (11 items)”, “Social Adaptation (7 items)” and “Psychological Adjustment (7 items)”. High scores showed that patients’ adaptation to chronic diseases is high. 8 items in the scale were reverse coded. In this study, the total Cronbach Alpha of the scale was 0.88; Cronbach’s Alpha of the sub-dimensions was determined as 0.73, 0.66 and 0.74, respectively.
Statistical analysis
SPSS 21.0 (IBM SPSS Statistics for Windows, Version 21.0. Armonk, NY: IBM Corp.) was used in the analysis of the data. Kolmogorov-Smirnov Z test was applied to determine whether the scale scores fit the normal distribution. Spearman’s Rho correlation test was used in the analysis of the relationship between the scores between the scales. It was accepted as p<0.05 in the statistical evaluation of the analyses.
Ethical Approval
This study was approved by the Ethics Committee of Okan University (Date: 2021-03-31, No: 135)
Results
The results regarding the personal and disease characteristics of 192 patients are given in Table 1. Hospital Anxiety and Depression Scale-Anxiety scores of patients were 10.55±4.41 (10 points and below: n=101, 52.60%; 11 points and above: n=91, 47.40%) and the mean Hospital Anxiety and Depression Scale-Depression scores were 11.13±4.03 (7 points and below: n=25, 13.02%; 8 points and above: n=167, 86.98%). The mean of the Adaptation to Chronic Illness Scale scores of the patients were determined as 72.42±12.15 (Table 2). A negative and significant relationship was determined between the mean the Hospital Anxiety and Depression-Anxiety Scale scores and the Adaptation to Chronic Illness Scale total and physical Adaptation, social Adaptation, and psychological Adaptation sub-scales scores (r=-0.63; r=-0.50; r=-0.53; r=-0.66). In addition, a significant negative relationship was determined between the mean the Hospital Anxiety and Depression-Depression Scale scores and the Adaptation to Chronic Illness Scale total and physical Adaptation, social Adaptation, and psychological Adaptation sub-scales scores (r=-0.63; r=-0.50; r=-0.55; r=-0.63) (Table 3).
Discussion
Chronic heart failure is very common nowadays. Many studies are carried out to prevent this disease. In addition, efforts are made to reduce the difficulties experienced by the patient due to this disease [3]. However, the difficulties experienced by the patients and the burdens caused by the disease are increasing [4-6, 10]. This study was conducted in order to determine the depression and anxiety levels caused by the difficulties experienced by the patients and to reveal the relationship between the patients’ adaptation to their diseases.
In this study, patients’ mean anxiety scores were 10.55±4.41 (10 points and below: n=101, 52.60%; 11 points and above: n=91, 47.40%) and depression scores were 11.13 ±4.03 (7 points and below: n=25, 13.02%; 8 points and above: n=167, 86.98%). These results show that it is important to address depression and anxiety in patients with chronic heart failure. Also, the mean score of the patients on the scale of adaptation to chronic illness was determined as 72.42±12.15 in the study. When the scores that can be obtained from the scale (min:25-max:125) were examined, it was evaluated that the level of adaptation to chronic illnesss of the patients was moderate. The researchers reported that more than half of heart failure patients experience anxiety, and almost all of them are at risk of depression [14, 15, 18]. In the study in which compliance and management of heart patients were examined, it was determined that the patients experienced adaptation problems and the reasons for these problems were uncertainty regarding the recommendations and inadequate/ambiguous instructions, difficulties in symptom control, presence of other diseases, and socio-economic factors [3, 5, 9, 10, 19]. The more the daily life of the individuals who suffer from the disease is affected and it hinders their plans for the future, it is a symptom that shows the worsening of the disease. These problems may cause different problems in both psychosocial and medical dimensions in the adaptation efforts of patients with chronic diseases [1-4, 5]. In studies, it has been determined that non-compliance with the disease seen in patients increases hospitalizations and causes a longer stay in the hospital [2, 3, 5, 9, 11]. As a result of all these, it was found that the patients showed more psychiatric symptoms [4, 18]. The researchers reported that depression and anxiety disorders are common in patients with chronic heart diseases, and this negatively affects the quality of life and functional status of patients, negatively affects the survival rate by reducing the level of physical activity, and ultimately reduces the quality of life [1, 3, 10, 18]. Therefore, it is important for patients to adapt to their disease for their mental health. In our study, the fact that most of the patients scored above the depression and anxiety scale cut-off points and their compliance level was moderate shows the relationship between mental health and adjustment in patients with chronic heart failure.
In this study, a negative and significant correlation was found between the patients’ Anxiety and Depression scores and the Adaptation to Chronic Illness Scale total score (p<0.05). Adaptation in heart failure affects the prognosis of the disease, quality of life, duration and frequency of hospitalization. Patients need to make continuous efforts to protect and improve their own health [5, 15]. This process often leads to psychiatric symptoms [1, 4, 13]. The fact that patients with chronic heart failure have knowledge about their disease, make changes in their lifestyle according to the effects of the disease, and willingly participate and cooperate in the planned treatment and care contribute to their adaptation to the disease [1, 4, 5-7, 9, 10]. The success of heart failure treatment increases the patient’s regular visits to the health institution, regular use of medications, recognizing and following up the symptoms associated with the disease, meeting his daily activities and care needs, and adapting to the disease [6, 7]. Thus, it causes the patient to be less affected by the negative effects of the disease, increase the capacity to cope with problems, and experience less anxiety and depression [4, 15, 18].
Heart disease causes problems in marriage, work life, family life and economics in patients. This disrupts their level of adaptation [4, 7, 9, 10]. One of the most important points in ensuring adaptation is that the individual recognizes his/her own body during the illness, becomes aware of the emotions and thoughts he/she experiences, and recognizes the factors that increase his/her capacity to adapt to the illness [1-3, 7, 19].
The fact that the results of treatment and care in chronic diseases are positive and they are less affected psychologically in this process is directly related to the compliance level of the patients [4, 15]. In chronic diseases, the problem of adherence to treatment causes failure in treatment [5, 6, 20, 21]. First of all, it is necessary to recognize psychiatric disorders such as anxiety and depression, which prevent the individual from complying with treatment, and to prepare a treatment plan in this direction [3, 4, 21]. With compliance with the treatment, the duration of hospitalization decreases, repeated hospitalizations are prevented, the cost of treatment decreases, and the individual’s belief in the success of the treatment of the disease increases [2, 7, 9, 18, 21, 22].
Researchers have stated that adaptation to the disease has effects such as taking responsibility for oneself, being at peace with oneself while doing this, making efforts for one’s own well-being, and providing motivation for recovery [6, 10]. Adaptation to the disease actually supports the individual’s self-healing feelings and behaviors [2, 3, 7, 21]. As a result, as patients adapt, they may be less affected by their difficulties. Thus, as the result of this study supports, as the level of compliance with the disease increases, the depression and anxiety levels of the patients decrease. In other words, it is important to increase the adaptation of chronic heart failure patients to their diseases in order to reduce the level of depression and anxiety caused by the difficulties they experience. Thus, the individual and societal burden caused by the disease can be reduced.
In reducing the psychiatric disorders experienced by chronic heart patients, increasing their adaptation to their diseases can be easy and economical. Because, as the depression and anxiety levels of the patients increase, they can strain the health system. Patients’ quality of life may decrease. For this reason, adaptation to the disease is important in reducing the anxiety and depression levels of patients with chronic heart failure. This study presents a conclusion regarding the psychiatric symptoms experienced by these patients and the benefits of increasing their adaptive capacity in reducing these symptoms. Although the results obtained are important to draw attention to the psychiatric symptoms experienced by these patients, the data obtained from the anxiety and depression scales should be reconsidered by the psychiatrist through individual interviews. Because the results obtained from the determined anxiety and depression score scales are limited to the answers given by the patients and the duration of the questionnaire.
Because the study was conducted with patients in a hospital, the results cannot be generalized to other patients. In addition, other psychiatric disorders of the patients that were not detected during the study could not be controlled. Therefore, physical, psychological and cultural variables that affect the results of this research are limitations.
Conclusions
According to the results of this study, to reduce depression and anxiety in patients with chronic heart failure, it may be recommended to increase their capacity to adapt to the disease.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Hacer Kuzey, Sevinç Mersin. The relationship between depression and anxiety levels, and adaptation to the disease in patients with chronic heart failure. Ann Clin Anal Med 2024;15(4):282-286
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Investigation of serum asprosin level in gestational diabetes mellitus and examination of neonatal outcome
Emre Uysal 1, Feyzanur Incesu Cintesun 2, Oguzhan Gunenc 3, Ummugulsum Can 4
1 Department of Gynecology and Obstetrics Clinic, Yusufeli State Hospital, Artvin, 2 Departmant of Gynecology and Obstetrics, Private Clinic, Konya, 3 Department of Gynecology and Obstetrics, University of Health Sciences, Konya City Hospital, Konya, 4 Department of Biochemistry, University of Health Sciences, Konya City Hospital, Konya, Turkey
DOI: 10.4328/ACAM.22112 Received: 2024-01-16 Accepted: 2024-03-05 Published Online: 2024-03-18 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):287-292
Corresponding Author: Emre Uysal, Department of Gynecology and Obstetrics Clinic, Yusufeli State Hospital, Artvin, Turkey. E-mail: emreuysal53@dr.com P: +90 539 737 29 62 Corresponding Author ORCID ID: https://orcid.org/0000-0001-7636-5127
Other Authors ORCID ID: Feyzanur Incesu Cintesun, https://orcid.org/0000-0003-2131-962X . Oguzhan Gunenc, https://orcid.org/0000-0003-4373-5245 . Ummugulsum Can, https://orcid.org/0000-0002-8967-2924
This study was approved by the Ethics Committee of Necmettin Erbakan University (Date: 2021-06-18, No: 2021/3300)
Aim: Our aim in this study is to investigate serum asprosin levels in Gestational Diabetes Mellitus (GDM) patients and to examine the neonatal outcomes of these patients.
Material and Methods: Pregnant women between the ages of 24/0–28/6 weeks who came to our clinic between June 2021 and February 2022 for an oral glucose tolerance test (OGTT) were included in the study. The patients were divided into two groups based on the findings of the OGTT: the GDM group (n = 52) and the control group (n = 31). All patients’ serum values for asprosin, triglycerides, HDL, LDL, total cholesterol, and insulin were examined. To measure the difference in asprosin level between trimesters, it was studied for the second time in all patients between 32 and 36 weeks.
Results: The GDM group’s elevated HbA1c was statistically significant when analyzed alongside the control group. The newborns in the GDM group were measured as longer than the infants in the control group. The infants in the GDM group had a lower 5-minute APGAR score. The first aprosin value was substantially lower in the GDM group than in the control group. There was no variation in the second asprosin value among the groups. There was no discernible link between serum asprosin levels and the outcomes of newborns.
Discussion: No correlation was observed between serum asprosin levels, GDM and neonatal outcomes. It would be beneficial to conduct more extensive studies on this subject.
Keywords: Asprosin, Gestational Diabetes Mellitus, Neonatal Outcome
Introduction
During the second half of pregnancy, catabolism takes over due to the action of placental hormones. The hormones progesterone, estrogen, prolactin, cortisol, and especially human placental lactogen, create a diabetogenic environment by showing an anti-insulin effect, and maternal blood glucose levels are kept at high levels both during fasting and satiety to meet the increasing need of the fetus.
The fibrillin-1 gene in adipose tissue encodes the adipokine asprosin. Romere gave the initial description of it in 2016 [1]. Asprosin has been shown to have a role in several complex processes, such as glucose metabolism, the emergence of insulin resistance (IR) in peripheral tissues and organs, and the apoptosis of brain cells [2, 3]. The asprosin level increases with food intake and is directly proportional to body weight. Its function in the body is to increase hepatic glucose secretion [1]. Studies on humans and mice have demonstrated in the literature that asprosin is linked to obesity, polycystic ovarian syndrome (PCOS), IR, and cardiovascular diseases (CVD) [2, 4].
The illness known as diabetes mellitus (DM) is brought on by a disruption in the metabolism of proteins, fats, and carbohydrates as a result of either insufficient or nonexistent pancreatic insulin secretion [5]. A carbohydrate intolerance problem identified as gestational diabetes mellitus (GDM) develops during pregnancy and typically goes away after the pregnancy is over [6]. Pregnancy-related problems are widespread, with GDM being one of them. The main maternal effects of GDM are hyperglycemia, hypertension and preeclampsia. Macrosomia, perinatal mortality, newborn respiratory issues, and metabolic abnormalities (hypoglycemia, hypocalcemia, and hyperbilirubinemia) are the primary impacts of gestational diabetes mellitus on fetuses and infants.
The most commonly used procedure in clinics is the 75-gram oral glucose tolerance test (OGTT), which is approved by the World Health Organization (WHO) but there are additional methods. This test is carried out between weeks 24 and 28 of pregnancy and can be used for both screening and diagnosis.
Diagnosis of GDM is very important aspect of maternal, fetus and infant health, and to ensure strict blood sugar regulation with diet or insulin. Asprosin is believed to have a function in this regulation and could, thus, serve as a substitute for OGTT in the diagnosis of GDM. The purpose of this research was to look at the asprosin level in the serum and assess the newborn outcomes of GDM patients.
Material and Methods
This prospective, cross-sectional research investigation was conducted out in the obstetrics and gynecology clinic of a tertiary hospital in Turkey between June 2021 and February 2022.
The study’s inclusion requirements were singleton pregnancies with normal first-trimester fasting blood sugar levels, ages 18–45, gestational weeks 24/0–28/6, consenting to an OGTT, and willing participation in the research. Ages <18 or >45, neurocognitive illnesses preventing them from answering the consent form, gestational ages ≤24/0 or ≥28/6 weeks, multiple pregnancies, any other diseases, or incapacity to withstand the OGTT were the exclusion criteria for the study.
Based on prior comparable research, the sample size was computed to yield a standard effect size of 0.82 for a minimum of 23 patients per group, with a five percentage point margin of mistake and 80% power [7]. Two groups of patients were created: The GDM group (n = 52) and the control group (n = 31).
The WHO and IADPSG (International Association of Diabetes and Pregnancy Study Group) suggested the use of OGTT o 75 grams as a diagnostic and screening test. The test was conducted, and the threshold values established by both organizations were applied. Accordingly, in the diagnosis of GDM, the threshold values used were blood glucose after eight hours of fasting ≥92 mg/dL; after 75 g OGTT first hour blood glucose ≥180 mg/dL, and second hour ≥153 mg/dL [8]. Any time any one of these amounts was elevated, GDM was diagnosed.
Age, prior pregnancies, history of gestational diabetes, and gestational week were among the sociodemographic data analyzed for the two patient groups. Anthropometric data included length, weight, BMI, waist and hip circumference, and waist-hip ratio (WHR). Laboratory values included HDL, LDL, total cholesterol, triglyceride, HbA1c, insulin, hemoglobin, hematocrit, and platelets. Finally, neonatal data included delivery type, birth week, gender, height-weight, head circumference, fetal distress, APGAR 1–5th minute, cord pH, neonatal intensive care admission, and poor neonatal outcome (stillbirth, hypothermia, hypoglycemia, respiratory distress syndrome). Using the blood remaining from the blood sample taken in the normal follow-up examination of pregnant women, the asprosin level was examined twice using the sandwich ELISA kit (Bioassay Technology Laboratory company) with ELx800 Absorbance Microplate Reader (Biotek, Winooski, VT, USA) at gestational week 24/0-28/6 and than after 32/0 weeks.
Statistical Analysis
SPSS vn 28.0 software was used to statistically analyze the study’s data. The terms mean ±, standard deviation, median, lowest and greatest values or numbers (n), and percentage (%) were used for descriptive statistics. The Kolmogorov-Smirnov test was used to determine if the variables conformed to a normal distribution. The quantitative independent data was analyzed using the Mann-Whitney U test. When the requirements of the Chi-square test were not satisfied, the Fischer test was utilized in place of the Chi-square test for the examination of qualitative independent data. It was determined that a value of (p<0.05) was statistically significant.
Etihical Approval
This study was approved by the Ethics Committee of Necmettin Erbakan University (Date: 2021-06-18, No: 2021/3300).
Results
Two patient groups were evaluated: the control group (n = 31) and the GDM group (n = 52). Table 1-2 provides demographic data, serum indicators, and the average neonatal outcome values for each pregnant research participant. Age, gravida, parity, and the number of living children were all considerably greater in the GDM group (p<0.05). In terms of the other sociodemographic data, there was no significant variation between the groups (p>0.05). When compared to the control group, the GDM group’s WBC and HbA1c values were considerably greater (p<0.05). The GDM group’s initial aprosin value was significantly (p<0.05) lower than the control group’s. The second aprosin value did not significantly differ across the groups (p>0.05). Insulin levels or any other lipid markers did not differ significantly across the groups (p> 0.05). (Table 2) Compared to the control group, the infant length in the GDM group was significantly (p<0.05) lengthier. There was no discernible difference between the groups when other neonatal demographic data were taken into account (p>0.05). The GDM group’s APGAR 5-minute value was significantly lower (p<0.05) than that of the control group. There was no statistically significant difference observed between the groups with respect to the cord pH, APGAR 1 min score, and poor neonatal outcomes (p>0.05). (Table 3).
Discussion
GDM is the most common systemic disease in pregnancy and although the true incidence is not known, reported prevalence varies between 1-14% [9]. Over the past 20 years, there has been a rise in the prevalence of GDM, primarily due to older mothers and an increase in childhood obesity [10]. Complications can be avoided with appropriate follow-up and treatment.
When fasting, the liver produces glucose due to the secretion of asprosin, which affects blood sugar regulation and insulin resistance (IR) [5]. Asprosin also has the effect of preventing pancreatic beta cells from secreting insulin [11]. It has been demonstrated that asprosin affects intricate processes in the brain, spinal cord, tissues in the peripheral region, and organs, including hunger, glucose metabolism, IR, and cell destruction [1, 6].
Obesity, personal and family medical history, and advanced maternal age all raise the potential of GDM, even if its exact cause is unknown [12]. The likelihood of having GDM rises with increasing gestational age, gravida, and parity numbers [5,13]. In keeping with previous research, the GDM group in this study outperformed the control group in terms of birth rates, age, gravida number, parity number, parity ratio, amount of live children, and ratio of living children (p<0.05).
In contrast to prior studies, there was no discernible difference between the research groups in terms of triglycerides, LDL, HDL, and total cholesterol when the lipid profile was assessed in the second trimester in GDM and control groups. This could be because diet controls blood sugar levels in the majority of GDM pregnant women. However, there are various results in the literature regarding this [14, 15]. Feig et al. reported that pregnant women with GDM and healthy pregnant women had greater insulin levels than non-pregnant women [16]. In the current study, pregnant women without GDM and those in good health were compared. Despite considerably higher insulin levels in the control group, no statistically noteworthy variance was observed (p>0.05).
In 2019, Baykus et al. Reported that plasma asprosin levels were higher in pregnant women with GDM, severe preeclampsia and macrosomic fetuses between 37-39 weeks of pregnancy compared to healthy pregnant women [17]. In the current investigation, asprosin levels were shown to be higher in the second and third trimesters among healthy pregnant women than in the group with gestational diabetes mellitus. There was no statistically significant difference (p>0.05) between the groups in the second asprosin measurement, although there was a statistically significant difference (p<0.05) in the first asprosin measurement. The lower asprosin level in the GDM group in the current study may be explained by the sample size limitations and the fact that a higher percentage of GDM patients were treated with food rather than insulin. The Baykus et al study did not separate the GDM patients into diet- or insulin-regulated categories. If the GDM patients had been separated into two groups or if there had been more diet-regulated GDM patients, perhaps asprosin would have been determined at a lower level in the GDM group of that study. Furthermore, it’s unclear if the asprosin level remained significant because it wasn’t examined for two trimesters in the Baykus et al study.
In another study by Zhong et al serum asprosin values were examined in pregnant women with GDM at 3 different times (18-20w, 24-28w and in the prenatal period). There was no appreciable change between the groups’ asprosin values measured between 24-28w; however, the GDM group’s results for other asprosin [7]. In the current study, the asprosin value was not high in the GDM group. Differences between the studies could also be attributed to the use of different brand kits and there is no specific cut-off value in the asprosin kit.
Upon combining all of these findings, it is evident that additional research with a larger sample size and comparison studies using OGTT—the gold standard of diagnostic evaluation—is required to ascertain whether asprosin may be utilized in the diagnosis of GDM. There may be a negative correlation, not a positive one, between asprosin and GDM. Asprosin is not commonly utilized, nevertheless, because there is a lack of a standard for the asprosin value ranges and discrepancies in the measurement and confidence intervals of the kits available on the market. These issues make it difficult to do additional research.
Previous studies have found significantly increased HbA1c levels in GDM patients [18,19]. These investigations support the findings that the GDM group in the current study had a higher HbA1c (p<0.05). According to Fagninou et al., pregnant GDM patients had considerably higher WBC levels than the control group [20]. Conversely, the current study’s findings indicated that the GDM group’s WBC value was lower than the control group’s (p<0.05).
Fuka et al. looked at the neonatal outcomes of GDM-affected pregnant women and discovered that the infants’ 5-min APGAR score was lower in GDM patients [21]. The APGAR score of infants whose pregnancies were affected by GDM was similarly shown to be low in another study that looked at maternal and neonatal outcomes [22]. Regarding the first-minute APGAR score, there was no discernible difference (p>0.05) between the GDM group and the control group in this investigation. On the other hand, the GDM group’s fifth-minute APGAR score was considerably lower (p<0.05). These findings are consistent with the information found in the literature, leading one to believe that babies of GDM patients should have close follow-up because the general health of these infants may worsen over the postnatal period. The association between asprosin level during pregnancy and neonatal outcomes could not be explored in this investigation because, in contrast to other studies, the asprosin level was not found to be high in the GDM group. Consequently, it was believed that the existence of GDM was the cause of the poor neonatal outcomes. Relationship building with asprosin was not achievable.
This study has some limitations. Among these was the fact that asprosin levels in fetal cord blood were not investigated, nor were asprosin levels in non-pregnant individuals tested. In addition, a group of patients were excluded from the study because they could not be followed up regularly or gave birth in another hospital. Finally, when the diagnosis of GDM was made, the first diet followed by insulin therapy made it difficult to recruit patients. However, this study has some strengths. One of its strongest points is that this is the first study, to our knowledge, to examine the effects of asprosin on neonatal outcomes. Another is that it is one of the few studies in the literature examining the change in asprosin levels between trimesters.
Conclusion
According to the study’s findings, there was no discernible difference in the groups’ serum asprosin levels between the GDM patients and the control group, and the pregnancies’ neonatal outcomes were comparable. However, it would be beneficial to conduct more extensive studies on this subject.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Does heart failure have an effect on the progress of diabetic retinopathy?
Erdogan Yasar 1, Halil Aktas 2, Murat Gul 2, Ugur Gurlevik 3
1 Department of Ophtalmology, Afyonkarahisar Fuar Hospital, Afyonkarahisar, 2 Department of Cardiology, Faculty of Medicine, Aksaray University, Aksaray, 3 Department of Ophthalmology, Faculty of Medicine, Aksaray University, Aksaray, Turkey
DOI: 10.4328/ACAM.22116 Received: 2024-01-17 Accepted: 2024-03-05 Published Online: 2024-03-19 Printed: 2024-04-01 Ann Clin Anal Med 2024;15(4):293-296
Corresponding Author: Erdogan Yasar, Department of Ophtalmology, Afyonkarahisar Fuar Hospital, Afyonkarahisar, Turkey. E-mail: dr.e.yasar@gmail.com P: +90 552 934 10 03 Corresponding Author ORCID ID: https://orcid.org/0000-0001-5129-9397
Other Authors ORCID ID: Halil Aktas, https://orcid.org/0000-0001-7229-1474 . Murat Gul, https://orcid.org/0000-0001-6841-1998 . Ugur Gurlevik, https://orcid.org/0000-0003-2965-481X
This study was approved by the Ethics Committee of Aksaray University (Date: 2019-12-27, No:2019/12-41)
Aim: To evaluate the effect of concomitant heart failure on diabetic retinopathy (DR) in patients with Diabetes Mellitus (DM).
Material and Methods: In this cross-sectional study, 40 eyes of 20 patients with DM alone (control group) and 70 eyes of 35 patients with heart failure and DM were included. Anterior segment and dilated fundus examination were performed in all patients. DR was classified as mild, moderate, severe non-proliferative DR and proliferative DR. According to the ejection fraction (EF), the stage of heart failure was classified as decreased (HFrEF) if LVEF <40%, moderate (HFmrEF) if LVEF was 40-49%, and preserved (HFpEF) if LVEF ≥50%. After this staging of HF patients; 13 were classified as HFpEF, 12 as HFmrEF and 10 as HFrEF
Results: In our cross-sectional study, the mean age of the patients in the HF+DM+ group consisting of 35 patients was 54.4 ± 12.6 and the mean age of the control group consisting of 20 patients was 51.7 ± 6.8. PDR and DR in the HFrEF group were found to be significantly higher than the control (p=0.02, p=0.04 respectively. In addition, as a result of examining the relationship between the factors affecting the severity of DR, the duration of DM (p=0.01, OR=1.62), HbA1c (p=0.03, OR=2.95) and HF severity (p=0.02, OR=1.86).
Discussion: Our study shows that the risk of PDR is increased in the HFrEF stage in patients with HF accompanying DM, in addition to blood glucose regulation, HF treatment may contribute positively to DR.
Keywords: Diabetic Retinopathy, Proliferative Diabetic Retinopathy, Heart Failure, Hypoxia
Introduction
Diabetes mellitus (DM) is a disease that threatens visual acuity and can cause microvascular complications, which is one of the leading causes of blindness [1]. The prevalence of diabetic retinopathy (DR) in individuals with DM is approximately 35%, and this rate reaches up to 60% in individuals with diabetes for 20 years [2-3]. Disease duration and severity of hyperglycemia can be counted among the main risk factors associated with diabetic retinopathy [4-5]. Diabetic Retinopathy is a disease that occurs as a result of chronically high blood sugar and can be seen in retinal hemorrhages, exudates, macular edema, neovascularizations and occlusions in retinal vessels [6]. DR can be classified as non-proliferative DR (NPDR) and proliferative DR (PDR), and it is diagnosed as PDR in the presence of neovascularization (NV), preretinal hemorrhage, intravitreal hemorrhage findings, and as NPDR in the absence of this findings [7]. The major factor in the emergence of the PDR phase is hypoxia in the body [8-10].
Heart failure (HF) is a prevalent public health issue; with reportedly affects 26 million people worldwide [11]. HF is categorized based on the left ventricular ejection fraction (LVEF). Patients are most often classified as having HF with reduced (HFrEF; LVEF <40%), mid-range (HFmrEF; LVEF 40–49%), or preserved ejection fraction (HFpEF; LVEF ≥50%) [12]. HF and sleep disturbances are two common conditions that frequently coexist and overlap [13]. Sleep apnea, a reported prevalence as high as 40% in HF patients, is a worse prognosis predictor due to hypoxia [14].
This study aims to evaluate in detail whether the stages of diabetic retinopathy are affected by the stage of HF.
Material and Methods
In this cross-sectional study, 35 patients with DM accompanying HF disease (DM+HF+) who applied to the cardiology outpatient clinic between 06.08.2021 and 08.02.2022 were included in the study. Forty eyes (DM+HF-) of 20 patients with DM who were sent to the Cardiology outpatient clinic and confirmed as not having HF were taken as the control group. All study procedures were performed in accordance with the Declaration of Helsinki. In addition, informed consent was obtained from all patients before they participated in the study.
Thirty-two patients with HF and twenty patients without HF(control group) were enrolled in the study. Patients were divided into three groups according to LVEF: HFrEF (n=7), HFmrEF (n=12), and HFpEF (n=13).
Hypertension and coronary artery disease which can affect Diabetic Retinopathy, presence of anterior and posterior segment pathologies that reduce the visibility of the retina, and pregnancy were determined as exclusion criteria. In addition, diseases such as thyroid diseases and anemia were excluded from the differential diagnosis of heart failure.
Data such as age, gender, duration of diabetes mellitus, glycosylated hemoglobin (HbA1c) level, and stage of heart failure of the patients included in the study were recorded. After a detailed anterior segment examination with biomicroscopy (Topconsl-D7, SN:1613331, Japan), both pupils were dilated with mydriatic eye drops (0.1% tropicamide). After 30 minutes, detailed retinal examinations including the peripheral retina were performed. Patients were classified according to the International Clinical Diabetic Retinopathy Disease Severity Scale as mild NPDR (microaneurysm only), moderate NPDR (more than a single microaneurysm but less than severe NPDR), severe NPDR (severe intraretinal hemorrhages and microaneurysms, more severe NPDR in each of the four quadrants, two or more venous pilling in and moderate IRMA in one or more quadrants) and PDR (Neovascularization, one or both vitreous/preretinal hemorrhages). The degree of diabetic retinopathy was evaluated for the right and left eyes separately in the patients, and the result was classified according to the worst eye. Fundus fluorescein angiography was performed in patients whose neovascularization could not be differentiated on fundus examination.
Statistical Analysis
Statistical Package for the Social Sciences (SPSS) 23.0-Windows (SPSS Inc., Chicago, IL) was used for statistical analysis. Shapiro-Wilk test was used to test whether the sample had a normal distribution. ANOVA test was used to compare the means of the groups. The Chi-square test was performed to compare the means of categorical variables in the groups. Binomial logistic regression analysis was performed to calculate the correlation ratios between the variables. Statistical significance was accepted as p < 0.05.
Ethical Approval
This study was approved by the Ethics Committee of Aksaray University (Date: 2019-12-27, No:2019/12-41)
Results
The mean age of the patients in the HF group was 54.4±12.6, and the group consisted of 17 females and 18 males in terms of gender. The mean age of the patients in the control group was 51.7±6.8 years and the group consisted of 11 females and 9 males. When the groups were compared in terms of mean age and gender, the statistically significant difference was not determined between them (p>0.05).
When mild and moderate groups were compared separately with the control group, a significant difference was not found between them in terms of DR, NPDR, PDR, HbA1c and DM duration (p>0.05). There was no difference between the severe group and the control group in terms of NPDR, HbA1c and DM duration (p>0.05). A statistically significant difference was found between the severe group and the control group in terms of the incidence of PDR and DR (p=0.02, p= 0.04 respectively). Detailed information is shown in Binomial logistic regression analysis was performed to investigate its association with the factors affecting the stage of DRP. There was a positive association between DM duration (p=0.03, OR=1.49), and HbA1c (p=0.02, OR=2.62) in the NPDR group, and in addition the association was not found in terms of age and gender (p>0.05). A positive association was found between DM duration (p=0.02, OR=1.62), HbA1c (p=0.01, OR=2.95) and HF severity (p=0.02, OR=1.86) in the PDR group, and no association was found in terms of age and gender (p>0.05). There was a positive association between DM duration (p=0.03, OR=1.27), HbA1c (p=0.01, OR=2.37) and HF severity (p=0.04, OR=1.21) in the DR group, and no association was found between age and gender (p>0.05). As a result, as the degree of HF increased, the risk of PDR increased 1.86 times and the risk of DR increased 1.21 times, while there was no significant increase in the risks of NDRP(p>0.05). Detailed information is shown in Table 2.
Discussion
Because of DM is a vascular disease, if glucose regulation is not good years after the onset of the disease, it affects many organs and one of them is the eye. Diabetic retinopathy is a disease that is a complication of diabetes and is associated with chronic hyperglycemia [1]. Although the main factor affecting diabetic retinopathy is blood sugar level, it can also contribute to this retinopathy through secondary causes. The main result of our study is that one of the secondary causes affecting diabetic retinopathy in patients with severe HF was determined as advanced heart failure.
In many studies, the duration of DM and the severity of hyperglycemia (HBA1c) have been reported as the main risk factors for DR [4-7]. In addition, although glucose is regulated sometimes, diabetic retinopathy due to secondary causes has been observed. Among the secondary causes, HT, hypercholesterolemia, CAD, heart failure, smoking, alcohol, Obstructive Sleep Apnea Syndrome, advanced nasal septum deviation, and other causes are still under investigation [15-21]. In this study, since these related diseases were determined as exclusion criteria to prevent diabetic retinopathy from being affected, a comparison with these diseases could not be made. As far as we know, there is no study in the literature investigating the detailed association between HF stages and DR stages.
Diabetic retinopathy can be classified as PDR and NPDR, and NPDR itself is classified according to the degree of retinopathy. Fundus findings in the early stage of NPDR are microaneurysms and microhemorrhages. The development of venous pilling, soft exudate and intraretinal microvascular abnormalities seen in the later progressive stage are findings suggestive of decreased capillary perfusion. When neovascularizations in the optic disc and retinal surface or preretinal hemorrhage or intravitreal hemorrhage due to these develops, our definition is PDR in which retinal ischemia is at the forefront [10]. The major factor in the PDR phase is hypoxia, and in this phase, VEGF and other growth factors released secondary to hypoxia increase the permeability of retinal vessels and neovascularizations and related hemorrhages occur [10,22].
The angiogenesis of neovascularizations seen in PDR is known as VEGF-A, which is regulated by hypoxia-induced vascular endothelial growth factor-A. This growth factor is secreted by Ganglion cells, Müller cells, and RPE cells and binds to high-affinity VEGF receptors on endothelial cells and pericytes to act.[23]. VEGF is an important growth factor especially for hypoxia-induced angiogenesis and is closely associated with the formation of new pathological vessels, and this angiogenesis is controlled by angiogenic inducers and inhibitors [23-24]. These newly formed pathological vessels are fragile and permeable and may grow along the retinal surface or into the posterior hyaloid. In addition, these vessels can be easily ruptured by vitreous traction and may cause bleeding in the vitreous or preretinal cavity, and may also cause tractional retinal detachment if not treated [24]. With a similar mechanism in our study, PDR findings may have occurred as a result of hypoxia caused by severe HF.
In patients with advanced HF, hypoxia occurs as a result of left ventricular enlargement and decreased ejection fraction [25]. We think that retinal hypoxia and ischemia may have occurred as a result of systemic hypoxia in this severe HF. When PDR is detected, the first thing that comes to mind is hyperglycemia, which causes retinal ischemia. However, in some patients, DRP findings are seen even though diabetes is regulated. Therefore, other systemic diseases that may cause retinal ischemia and hypoxia should be kept in mind. This study will ensure that advanced HF and other risk factors are taken into account in the etiology of PDR.
The limitations of this study are that it was conducted with a relatively low number of patients. However, the number of our patients remained relatively low since it is very difficult to find patients who have both heart failure (3 different stages) and DM at the same time and do not have other accompanying diseases. Two cardiology specialists took part in the study to reach this number of patients. In addition, the fact that two eyes of the patients were included in the study for the staging of diabetic retinopathy can be said to be a statistical limitation.
Conclusion
Our study is valuable in that only HF accompanying DM is not accompanied by other diseases that may affect diabetic retinopathy. This study showed that diabetic and HF patients with decreased EF are at risk for proliferative stage DR. Therefore, in these patients, besides blood sugar regulation, HF treatment may also contribute positively to proliferative retinopathy.
Scientific Responsibility Statement
The authors declare that they are responsible for the article’s scientific content including study design, data collection, analysis and interpretation, writing, some of the main line, or all of the preparation and scientific review of the contents and approval of the final version of the article.
Animal and Human Rights Statement
All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or compareable ethical standards.
Funding: None
Conflict of Interest
The authors declare that there is no conflict of interest.
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Download attachments: 10.4328.ACAM.22116
Erdogan Yasar, Halil Aktas, Murat Gul, Ugur Gurlevik. Does heart failure have an effect on the progress of diabetic retinopathy? Ann Clin Anal Med 2024;15(4):293-296
Citations in Google Scholar: Google Scholar
This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of the license, visit https://creativecommons.org/licenses/by-nc/4.0/