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Aksoy A, Varoglu A, Onalan EE, Tektemur A, Artas G, Koc M, Cakmak M, Aydin S, Kilic M, Ulas M. The knockdown of stathmin with si-RNA inhibits invasion of mesothelioma. Tissue Cell 2024; 87:102303. [PMID: 38244401 DOI: 10.1016/j.tice.2024.102303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 12/11/2023] [Accepted: 01/02/2024] [Indexed: 01/22/2024]
Abstract
BACKGROUND To investigate the mechanism of action of stathmin1 (STMN1) in mesothelioma (MSM) and whether it has any role in its treatment. METHODS STMN1 expression was examined using immunohistochemistry in biopsy tissues taken from MSM patients. The relationships between the levels of STMN1 expression in the pathology preparations of MSM patients, and the clinicopathological characteristics of these patients, and their survival times were investigated. Transfection of STMN1-specific siRNA into SPC212 cells was compared to negative control siRNAs. The mRNA levels of genes that may play a role in invasion, apoptosis, and autophagy were evaluated by RT-PCR. RESULTS The expression of STMN1 was shown to be high in MSM tissues (p < 0.05). It was found that the only independent predictor factor affecting the survival time of MSM patients was the disease stage (p < 0.05). STMN1 was significantly reduced after siRNA intervention (81.5%). STMN1 with specific siRNA has been shown to suppress invasion by reducing the mRNA levels of cadherin-6 (CDH6), fibroblast growth factor-8 (FGF8), hypoxia-inducible factor 1 (HIF1A), matrix metallopeptidase 1-2 (gelatinase A) (MMP1-2), and TIMP metallopeptidase inhibitor 2 (TIMP2), which are important markers for invasion. Although the expression of apoptosis and autophagy-related genes, caspase-2 (Casp2) and LC-3, was reduced by silencing STMN1 with specific siRNA in western blot analysis, this effect was not observed in PCR results. CONCLUSIONS Immunohistochemical analysis of STMN1 may contribute to the differential diagnosis of MSM, and STMN1 may also be considered as a potential therapeutic target in the early invasive stage of MSM therapy.
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Affiliation(s)
- Asude Aksoy
- Department of Medical Oncology, University of Health Sciences, Fethi Sekin City Hospital SUAM, Elazig, Turkey.
| | - Asuman Varoglu
- Department of Neurology, Medical Faculty, Medeniyet University, Istanbul, Turkey
| | - Ebru Etem Onalan
- Department of Medical Biology and Genetics, Firat University, Elazig, Turkey
| | - Ahmet Tektemur
- Department of Medical Biology and Genetics, Firat University, Elazig, Turkey
| | - Gokhan Artas
- Department of Pathology, Medical Faculty, Firat University, Elazig, Turkey
| | - Mustafa Koc
- Department of Radiology, Medical Faculty, Firat University, Elazig, Turkey
| | - Muharrem Cakmak
- Department of Thoracic Surgery, Medical Faculty, Firat University, Elazig, Turkey
| | - Siyami Aydin
- Department of Thoracic Surgery, Medical Faculty, Firat University, Elazig, Turkey
| | - Murat Kilic
- Department of Thoracic Surgery, Inonu University, Malatya, Turkey
| | - Mustafa Ulas
- Department of Physiology, Medical Faculty, Firat University, Elazig, Turkey
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Atmaca M, Bibar A, Tabara MF, Koc M, Gurok MG, Korkmaz S, Mermi O, Yildirim H. Pituitary volumes in patients with adjustment disorder. Cereb Cortex 2024; 34:bhae148. [PMID: 38610089 DOI: 10.1093/cercor/bhae148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 04/14/2024] Open
Abstract
The pituitary gland plays an important role in the stress response mechanism. Given the direct link between adjustment disorder and stress, we hypothesized that there might be changes in the pituitary gland in these patients. The study comprised a patient group of 19 individuals with adjustment disorder according to the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition, and 18 healthy controls. The mean pituitary gland volumes of the patient group were not statistically significantly different from those of the healthy control group (80.81 ± 1.82 mm3 in patients with adjustment disorder vs. 81.10 ± 7.04 mm3 in healthy controls, with a statistically nonsignificant difference of P > 0.05). This finding is contrary to our previous findings in anxiety-related disorders. In this regard, adjustment disorder is not similar to anxiety-related disorders in terms of pituitary gland volumes. We should also clearly state that our study is a pioneering study and that studies with large samples are needed to support our findings. The limitations of our study can be attributed to the small sample size, the utilization of a cross-sectional design, and the inclusion of patients using psychotropic drugs.
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Affiliation(s)
- Murad Atmaca
- Department of Psychiatry University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
| | - Alper Bibar
- Department of Psychiatry University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
| | - Muhammed Fatih Tabara
- Department of Psychiatry University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
| | - Mustafa Koc
- Department of Radiology University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
| | - Mehmet Gurkan Gurok
- Department of Psychiatry University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
| | - Sevda Korkmaz
- Department of Psychiatry University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
| | - Osman Mermi
- Department of Psychiatry University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
| | - Hanefi Yildirim
- Department of Radiology University, Firat University, School of Medicine, District Yahya Kemal Street No: 25 23119 Merkez/Elazig, Turkey
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Sadat SAA, Pakravan-Charvadeh MR, Gholamrezai S, Rahimian M, Lane G, Béland D, Koc M, Clark N, Omidvar N, Sadeghi R, Vatanparast H. Factors associated with Afghan household food security pre- and post-Taliban regime. J Public Health Policy 2023; 44:551-565. [PMID: 37710011 DOI: 10.1057/s41271-023-00439-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 09/16/2023]
Abstract
To determine multifaceted determinants of household vulnerability to food insecurity in Afghanistan before and after the Taliban takeover, we randomly selected 555 households from 13 provinces, conducted in-person surveys, and applied the Household Food Insecurity Assess Scale (HFIAS) and Structural Equation Modeling (SEM). We collected data from January to April 2022. We observed an increase in both prevalence and severity of food insecurity among Afghan households after the Taliban takeover. Approximately, 98% and 70% of interviewed households were food insecure after and before the Taliban takeover, respectively. Similarly, households were more likely to be severely food insecure (81%) than before (40%). Our results showed that policy and political conditions contributed substantially to the food insecurity of Afghan households after the Taliban takeover. We recommend that the Taliban forces facilitate the presence of humanitarian organizations and NGOs to improve low-income households' food security, especially for women and children. We also recommend that international organizations enhance their attempts to negotiate with the Taliban to ensure freedom for women.
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Affiliation(s)
- Seyyed Amin Allah Sadat
- Department of Agricultural Economics and Rural Development, Lorestan University, Falakol' Aflak St, PO Box 465, Khorramabad, Lorestan, Iran
| | - Mohammad Reza Pakravan-Charvadeh
- Department of Agricultural Economics and Rural Development, Lorestan University, Falakol' Aflak St, PO Box 465, Khorramabad, Lorestan, Iran.
| | - Saeed Gholamrezai
- Department of Agricultural Economics and Rural Development, Lorestan University, Falakol' Aflak St, PO Box 465, Khorramabad, Lorestan, Iran
| | - Mehdi Rahimian
- Department of Agricultural Economics and Rural Development, Lorestan University, Falakol' Aflak St, PO Box 465, Khorramabad, Lorestan, Iran
| | - Ginny Lane
- College of Agricultural and Life Sciences, Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, USA
| | - Daniel Béland
- Department of Political Science, McGill University, Montreal, QC, Canada
| | - Mustafa Koc
- Department of Sociology, Centre for Studies in Food Security, Toronto Metropolitan University (Formerly Known As Ryerson University), Toronto, ON, Canada
| | - Nancy Clark
- Faculty of Human and Social Development, School of Nursing, University of Victoria, Victoria, BC, Canada
| | - Nasrin Omidvar
- Department of Community Nutrition, National Nutrition and Food Technology Research Institute (NNFTRI), Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Rasoul Sadeghi
- Faculty of Social Science, University of Tehran, Tehran, Iran
| | - Hassan Vatanparast
- College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK, S7N 5E5, Canada.
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Saif-Nijat J, Pakravan-Charvadeh MR, Gholamrezai S, Rahimian M, Lane G, Béland D, Koc M, Clark N, Omidvar N, Sadeghi R, Vatanparast H. The association of the quality of life with Afghan households' food insecurity before and after the recent political change in Afghanistan: a comparative analysis. BMC Public Health 2023; 23:2066. [PMID: 37872537 PMCID: PMC10591381 DOI: 10.1186/s12889-023-16967-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 10/11/2023] [Indexed: 10/25/2023] Open
Abstract
The overreaching objective of the current study is to investigate the association of quality of life with Afghan households' food insecurity. The data was collected immediately after the Taliban took control of a large part of Afghanistan. About a total of 555 households' heads participated in a face-to-face interview, using the HFIAS and WHOQOL-100 questionnaires along with some questions related to their socioeconomic characteristics at two different times, before and after the Taliban's takeover. The comparative analysis showed that 98% of Afghan households were food insecure after the Taliban takeover, while 70% of them faced food insecurity before the Taliban's takeover. The quality of life in the Taliban era is worse than before the Taliban. All dimensions of quality of life have decreased, and this decrease was more pronounced for the psychological, environmental, and physical domains. It is recommended that international organizations, NGOs, and local agents focus on these dimensions of the quality of life to improve food security.
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Affiliation(s)
- Jumakhan Saif-Nijat
- Department of Agricultural Economics and Rural Development, Lorestan University, Khorramabad, Lorestan, Iran
| | | | - Saeed Gholamrezai
- Department of Agricultural Economics and Rural Development, Lorestan University, Khorramabad, Lorestan, Iran
| | - Mehdi Rahimian
- Department of Agricultural Economics and Rural Development, Lorestan University, Khorramabad, Lorestan, Iran
| | - Ginny Lane
- College of Agricultural and Life Sciences, Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, USA
| | - Daniel Béland
- Department of Political Science, McGill University, Montreal, QC, Canada
| | - Mustafa Koc
- Department of Sociology, Centre for Studies in Food Security, Toronto Metropolitan University (formerly known as Ryerson University), Toronto, Canada
| | - Nancy Clark
- Faculty of Human and Social Development, School of Nursing, University of Victoria, Victoria, BC, Canada
| | - Nasrin Omidvar
- Department of Community Nutrition, National Nutrition and Food Technology Research Institute (NNFTRI), Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tajrish, Velenjak, Iran
| | - Rasoul Sadeghi
- Faculty of Social Science, University of Tehran, Tehran, Iran
| | - Hassan Vatanparast
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK, Canada.
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Ozden G, Adli M, Aktan M, Gunes S, Açıkgöz SG, Alkis H, Tezcan Y, Koc M. Machine Learning Based Prediction of Distant Metastasis in Rectal Cancer Patients with Complete Response following Neoadjuvant Chemoradiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e330. [PMID: 37785167 DOI: 10.1016/j.ijrobp.2023.06.2380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Distant metastasis (DM) is the leading cause of disease recurrence in rectal cancer patients with clinical or pathological complete response (CR) following neoadjuvant chemoradiotherapy (nCRT). Identifying these patients may help to tailor the treatment approach. The aim of this study was to predict the rectal cancer patients with high risk of DM following CR with nCRT, using machine learning (ML), based on patient, disease and treatment related clinical factors. MATERIALS/METHODS Data of the rectal cancer patients treated with nCRT at three academic centers between 2010-2022 were collected. Patients with secondary malignancies were excluded. 157 patients with CR were included in the analysis. Median age was 63 (31-85). Female/male ratio was 59/98. Tumor location was proximal-, mid- and distal-rectum in 9, 65 and 83 patients, respectively. cT stage was T2, T3 and T4 in 14, 120 and 23 patients, respectively. 122 patients had cN (+). Median tumor and regional lymph nodes doses were 50.4 (45-56) Gy and 45 (45-50.4) Gy, respectively, in 25-28 fractions, concurrently with capecitabine. 63 patients had clinical CR and were followed up without surgery, and 94 had pathological CR. Median RT-surgery interval was 11 (3.4-59) weeks. 41 patients were managed with total neoadjuvant treatment and 52 received adjuvant systemic treatment. Median follow up time was 37 (3-143) months. DM was detected in 18 patients at median 14 (2-87) months and local tumor recurrence/progression was seen in 9. A ML model was used to predict DM based on patient, disease and treatment related 37 clinical factors. Statistical analysis was conducted using Python (v.3.7). P<0.05 was accepted as statistically significant. Multiple Linear Regression was used to analyze the relationship between DM and independent continuous variables. Chi-square test was used to analyze the difference between the observed frequency distribution of a categorical variable and the expected frequency distribution. Confusion matrix algorithm was used to evaluate the performance of the model. Logistic regression algorithm (LRA) was selected as the best performing algorithm for the ML model that used 37 variables from 157 patients. The model was trained using 75% of the data and the remaining 25% was used for testing. RESULTS CEA, ratio of post- to pre-RT tumor SUVmax, tumor dose, RT-surgery interval, pre-RT weight loss, smoking history, cN status, and gender were significant parameters to predict DM, based on the LRA of the ML model. Accuracy score of the model was 92% and AUC of the ROC was 74%. Precision (positive predictive value) and recall (sensitivity) of the model were 67% and 50%, respectively. CONCLUSION Machine learning has a high rate of correctly classifying patients and good performance in predicting those with DM. Further studies with larger patient numbers are needed.
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Affiliation(s)
- G Ozden
- Department of Radiation Oncology, Marmara University School of Medicine, Istanbul, Turkey
| | - M Adli
- Department of Radiation Oncology, Marmara University School of Medicine, Istanbul, Turkey
| | - M Aktan
- Department of Radiation Oncology, Necmettin Erbakan University Meram Medical School, Konya, Turkey
| | - S Gunes
- Turkcell Technology Research and Development Inc., Istanbul, Turkey
| | - S Gökhan Açıkgöz
- Department of Radiation Oncology, Ankara Yildirim Beyazit University School of Medicine, Ankara, Turkey
| | - H Alkis
- Department of Radiation Oncology, Marmara University School of Medicine, Istanbul, Turkey
| | - Y Tezcan
- Department of Radiation Oncology, Ankara Yildirim Beyazit University School of Medicine, Ankara, Turkey
| | - M Koc
- Department of Radiation Oncology, Necmettin Erbakan University Meram Medical School, Konya, Turkey
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Kiziltoprak H, Tekin K, Ibrahim Atesoglu H, Kocabas DO, Koc M, Toker MI. Could Corneal Densitometry be a Progression Criterion for Subclinical Keratoconus? Beyoglu Eye J 2023; 8:157-165. [PMID: 37766767 PMCID: PMC10521129 DOI: 10.14744/bej.2023.85688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/26/2023] [Accepted: 08/14/2023] [Indexed: 09/29/2023]
Abstract
Objectives The objective of this study is to investigate the changes in topometry, tomography, and corneal densitometry in subclinical keratoconus (SK) at the 6-month interval. Methods The clinical keratoconus and SK groups included 25 eyes; the control group included 22 eyes from 22 patients. Corneal topographic, tomographic, topometric, and densitometric values obtained using the Pentacam HR imaging system were analyzed. Results Posterior elevation (PE), Keratoconus index (KI), index of height asymmetry (IHA), index of height decentration (IHD), Dp, Da, Final D, maximum pachymetric progression index (PPImax), and maximum Ambrósio relational thickness parameters showed significant changes between the baseline and the 6th-month follow-up in SK group (p<0.05 for all values). There were significant changes in all zones except a central layer of 6-10 zone, anterior, and central layer of 10-12 zone between the baseline and the 6th-month follow-up in the SK group (p<0.05, for all values). The changes in mean±standard deviation of KI, IHA, IHD, PPImax parameters, and corneal densitometry values of the posterior layer of 0-2 mm and 2-6 mm zones were significant in the SK group compared to the controls (p<0.05, for all values). Conclusion PE, KI, IHA, IHD, and PPImax parameters as well as increasing corneal light backscatter of the posterior central layer might be useful for follow-up of progression of SK. New multimeric parameters created by combinations of topometric, tomographic, and corneal densitometry parameters could be the future of SK follow-up.
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Affiliation(s)
- Hasan Kiziltoprak
- Department of Ophthalmology, Faculty of Medicine, Adiyaman University, Adiyaman, Türkiye
| | - Kemal Tekin
- Department of Ophthalmology, Health Science University Ulucanlar Eye Training and Research Hospital, Ankara, Türkiye
| | | | | | - Mustafa Koc
- Department of Ophthalmology, Ideal Eye Center, Kayseri, Türkiye
| | - Mustafa Ilker Toker
- Department of Ophthalmology, Health Science University Ulucanlar Eye Training and Research Hospital, Ankara, Türkiye
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Sut SK, Koc M, Zorlu G, Serhatlioglu I, Barua PD, Dogan S, Baygin M, Tuncer T, Tan RS, Acharya UR. Automated Adrenal Gland Disease Classes Using Patch-Based Center Symmetric Local Binary Pattern Technique with CT Images. J Digit Imaging 2023; 36:879-892. [PMID: 36658376 PMCID: PMC10287607 DOI: 10.1007/s10278-022-00759-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 01/21/2023] Open
Abstract
Incidental adrenal masses are seen in 5% of abdominal computed tomography (CT) examinations. Accurate discrimination of the possible differential diagnoses has important therapeutic and prognostic significance. A new handcrafted machine learning method has been developed for the automated and accurate classification of adrenal gland CT images. A new dataset comprising 759 adrenal gland CT image slices from 96 subjects were analyzed. Experts had labeled the collected images into four classes: normal, pheochromocytoma, lipid-poor adenoma, and metastasis. The images were preprocessed, resized, and the image features were extracted using the center symmetric local binary pattern (CS-LBP) method. CT images were next divided into 16 × 16 fixed-size patches, and further feature extraction using CS-LBP was performed on these patches. Next, extracted features were selected using neighborhood component analysis (NCA) to obtain the most meaningful ones for downstream classification. Finally, the selected features were classified using k-nearest neighbor (kNN), support vector machine (SVM), and neural network (NN) classifiers to obtain the optimum performing model. Our proposed method obtained an accuracy of 99.87%, 99.21%, and 98.81% with kNN, SVM, and NN classifiers, respectively. Hence, the kNN classifier yielded the highest classification results with no pathological image misclassified as normal. Our developed fixed patch CS-LBP-based automatic classification of adrenal gland pathologies on CT images is highly accurate and has low time complexity [Formula: see text]. It has the potential to be used for screening of adrenal gland disease classes with CT images.
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Affiliation(s)
- Suat Kamil Sut
- Department of Radiology, Adiyaman Training and Research Hospital, Adiyaman, Turkey
| | - Mustafa Koc
- Department of Radiology, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Gokhan Zorlu
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Ihsan Serhatlioglu
- Department of Biophysics, Faculty of Medicine, Firat University, Elazig, Turkey
| | - Prabal Datta Barua
- School of Business (Information System), University of Southern Queensland, Toowoomba, QLD 4350 Australia
- Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW 2007 Australia
| | - Sengul Dogan
- Department of Digital Forensics Engineering, College of Technology, Firat University, Elazig, Turkey
| | - Mehmet Baygin
- Department of Computer Engineering, College of Engineering, Ardahan University, Ardahan, Turkey
| | - Turker Tuncer
- Department of Digital Forensics Engineering, College of Technology, Firat University, Elazig, Turkey
| | - Ru-San Tan
- Department of Cardiology, National Heart Centre, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - U. Rajendra Acharya
- Department of Electronics and Computer Engineering, Ngee Ann Polytechnic, Singapore, 599489 Singapore
- Department of Biomedical Engineering, School of Science and Technology, SUSS University, Singapore, Singapore
- Department of Biomedical Informatics and Medical Engineering, Asia University, Taichung, Taiwan
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Atmaca M, Tabara MF, Koc M, Gurok MG, Baykara S, Korkmaz S, Mermi O. Cortical Thickness of the Orbitofrontal Cortex in Patients with Alcohol Use Disorder. Brain Sci 2023; 13:brainsci13040552. [PMID: 37190518 DOI: 10.3390/brainsci13040552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 03/10/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
Aims: In the present study, it was hypothesised that compared to healthy control subjects, significant differences in the cortical thickness of the orbitofrontal cortex (OFC) region of the brain, which is relevant to both impulsivity and decision making, would be identified. Methods: The subject groups included in the study were composed of 15 individuals who met the criteria for alcohol use disorder, according to the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition (DSM 5) diagnostic criteria based on the Structured Clinical Interview for DSM 5 (SCID), and were admitted to the Firat University School of Medicine Department of Psychiatry or were hospitalised, and 17 healthy control comparisons were made. The volumes of and cortical thickness of the OFC were measured in the subjects. Results: It was found that patients with alcohol use disorder had reduced volumes of the OFC bilaterally and a thinner cortical thickness of the same region bilaterally compared to those of the healthy control comparisons. Conclusions: Consequently, it is suggested that the OFC region of the brain appears to be statistically significantly smaller in patients with alcohol use disorder, both in terms of cortical thickness and volume, compared to healthy controls. Future research should focus on the status of these relationships longitudinally and should assess the causality of the association with the treatment response.
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Gurok MG, Tabara MF, Koc M, Saritoy S, Baykara S, Atmaca M. Pituitary Volumes Are Reduced in Patients With Alcohol Use Disorder. Alcohol Alcohol 2023; 58:107-112. [PMID: 36458440 DOI: 10.1093/alcalc/agac062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 09/01/2022] [Accepted: 10/25/2022] [Indexed: 12/03/2022] Open
Abstract
AIMS To determine whether there is a difference in pituitary gland volumes in patients with alcohol use disorder compared to healthy people. METHODS The subjects included in the study consisted of 15 individuals who met the criteria for alcohol use disorder according to the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition (DSM 5) diagnostic criteria based on the Structured Clinical Interview for DSM 5 and were admitted to Firat University School of Medicine, Department of Psychiatry, or were hospitalized, and 17 healthy controls. The volumes of pituitary were measured in subjects. RESULTS Absolute pituitary gland volumes of patients with alcohol use disorder and healthy controls were compared in the analysis performed using the independent samples t-test. The mean volume of the patient group was significantly smaller than the healthy controls (58.02 ± 7.24 mm3 in patients with alcohol use disorder vs. 83.08 ± 12.11 mm3, P < 0.01), a difference which persisted after controlling for age, gender and total brain size. CONCLUSIONS Patients with alcohol use disorder in this study had smaller pituitary gland volumes compared to those of healthy control subjects. However, this study has limitations including small sample size and not adjusting for previous or current medication use or current anxiety and depression.
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Affiliation(s)
- Mehmet Gurkan Gurok
- Department of Psychiatry, Firat University School of Medicine, Elazig 23100, Turkey
| | | | - Mustafa Koc
- Department of Radiology, Firat University School of Medicine, Elazig 23100, Turkey
| | - Sumeyra Saritoy
- Department of Radiology, Firat University School of Medicine, Elazig 23100, Turkey
| | - Sema Baykara
- Department of Psychiatry, Firat University School of Medicine, Elazig 23100, Turkey
| | - Murad Atmaca
- Department of Psychiatry, Firat University School of Medicine, Elazig 23100, Turkey
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Regnier-Davies J, Edge S, Yu MHM, Nasr J, Austin N, Daley A, Koc M. Towards equitable & resilient post-pandemic urban food systems: The role of community-based organizations ☆. Urban Governance 2022. [PMCID: PMC9617623 DOI: 10.1016/j.ugj.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Baykan AH, Sayiner HS, Aydin E, Koc M, Inan I, Erturk SM. Extrapulmonary tuberculosıs: an old but resurgent problem. Insights Imaging 2022; 13:39. [PMID: 35254534 PMCID: PMC8901940 DOI: 10.1186/s13244-022-01172-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/03/2022] [Indexed: 12/13/2022] Open
Abstract
Tuberculosis (TB) primarily affects the lungs, but some of its most devastating clinical consequences arise because of its ability to spread from the lungs to other organs. Extrapulmonary TB (EPTB) constitutes 15–20% of all TB cases. Imaging findings are not always specific and can mimic many diseases; therefore, EPTB should be considered in the differential diagnosis, particularly in patients with immune system disorders (AIDS, patients receiving chemotherapy, etc.) and those in other high-risk groups including people with diabetes. The bacterium's passage to the regional lymph nodes is essential for developing a protective T-cell-mediated immune response, but the bacterium can spread hematologically and via the lymphatic system, leading to extrapulmonary involvement. Diagnosis of EPTB in high-risk patients is made based on suspected clinical and radiological findings, but further positive culture and histopathological confirmation may be required in some instances. Radiological evaluations are critical for diagnosis and crucial in planning the treatment and follow-up. This paper aims to review the typical and atypical imaging features and the differential diagnosis of EPTB.
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Koc M, Mermi O, Aslan S, Atmaca M. Pituitary Volume in Individuals with Social Anxiety Disorder. PSYCHIAT CLIN PSYCH 2022. [DOI: 10.5152/pcp.2022.21239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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13
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Koc M. The investigating of clinical and radiological findings of hepatic actinomycosis. Med-Science 2022. [DOI: 10.5455/medscience.2022.07.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Actinomycosis is a rare chronic suppurative granulomatous infection of the oropharynx, gastrointestinal, and urogenital tract. Infection most commonly manifests as a cervicofacial disease but less frequently in the thoracic and abdominopelvic region. Hepatic actinomycosis (HA) is rare and usually secondary to abdominal actinomycosis. It can mimic hepatic malignant tumors. There is not enough information in the literature about HA. In this study, radiological and clinical findings of HA cases were investigated. Between January 2013 and February 2021, a total of 12 patients diagnosed with HA were retrospectively analyzed. Significant clinical and laboratory findings and radiological findings related to current pathology were noted. The mean age of the patients ranged from 23 to 75 years (mean age, 52.2 years). There were 7 male and 5 female patients. 85% of these patients had fever, 67% anemia, and 53% weight loss. Peripheral blood leukocytes were increased in all patients. 8 of the patients (66%) had a secondary infection of HA in the lungs, and pelvis organs. Radiologically, they were mostly low-intensity changes (66%), making them easily misdiagnosed as metastatic cancer and primary liver cancer. 17% seen acute bacterial abscess-like changes. A few cases exhibited cystic mass-like changes. In 64% of the patients, a single lesion was found. The right lobe of the liver was the most common infection area. A definitive diagnosis was made by histopathological examination. The diagnosis of primary HA is difficult to diagnose because of the nonspecific clinical and radiological findings. Differential diagnoses should be made with diseases that include both benign and malignant conditions.
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14
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Atmaca M, Koc M, Aslan S, Mermi O, Korkmaz S, Gurok MG, Yildirim H. Superior Temporal Gyrus Volumes in Patients With Social Anxiety Disorder. Prim Care Companion CNS Disord 2021; 23. [PMID: 34449986 DOI: 10.4088/pcc.20m02815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Objective: To determine if superior temporal gyrus volumes are altered in patients with a social anxiety disorder. Methods: Magnetic resonance imaging (MRI) was utilized to determine the superior temporal gyrus volume in 21 patients with a social anxiety disorder and 20 control subjects without a social anxiety disorder. The superior temporal gyrus volumes were measured by manual tracing method. The study was conducted between September 2019 and April 2020. Results: The mean superior temporal gyrus volume for both sides was statistically significantly smaller than that of control subjects (left side: 11.38 ± 0.85 cm3 for patients and 12.73 ± 0.86 cm3 for controls, t=-5.064, P < .001; right side: 11.42 ± 0.84 mm3 for patients and 12.92 ± 0.85 cm3 for controls, t=-5.574, P < .001). Moreover, when comparing volumetric measurements for subregions, we detected that volumes of all subregions were also statistically significantly smaller than those of healthy comparisons (for both sides of the Heschl's gyrus and planum temporale). Conclusions: The study findings suggest that patients with social anxiety disorder seem to have smaller superior temporal gyrus volumes compared to healthy control subjects, although we do not know whether these results were in accordance with functional changes of the same region.
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Affiliation(s)
- Murad Atmaca
- Department of Psychiatry, School of Medicine, Firat University, Elazig, Turkey.,Corresponding author: Murad Atmaca, MD, Firat (Euphrates) Universitesi, Firat Tip Merkezi, Psikiyatri Anabilim Dali 23119, Elazig, Turkey
| | - Mustafa Koc
- Department of Radiology, School of Medicine, Firat University, Elazig, Turkey
| | - Sabriye Aslan
- Department of Psychiatry, School of Medicine, Firat University, Elazig, Turkey
| | - Osman Mermi
- Department of Psychiatry, School of Medicine, Firat University, Elazig, Turkey
| | - Sevda Korkmaz
- Department of Psychiatry, School of Medicine, Firat University, Elazig, Turkey
| | - Mehmet Gurkan Gurok
- Department of Psychiatry, School of Medicine, Firat University, Elazig, Turkey
| | - Hanefi Yildirim
- Department of Radiology, School of Medicine, Firat University, Elazig, Turkey
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15
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Bankir M, Koc AS, Gorgulu FF, Sumbul HE, Koc M. Hemoptysis and massive focal alveolar hemorrhage after successful biventricular pacemaker implantation. Niger J Clin Pract 2021; 24:443-445. [PMID: 33723121 DOI: 10.4103/njcp.njcp_650_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
During and after cardiac resynchronization therapy (CRT) implantation, many adverse events may occur. We present an interesting and important patient with hemoptysis and massive focal alveolar hemorrhage in a patient after a successful CRT implantation. CRT implantation was completed without any problems. In the follow-up, complaints of cough and hemoptysis began 1 h after the procedure. On the PA chest X-ray, a ground glass image was found in the left upper zone. Thorax CT revealed focal alveolar hemorrhage in the left upper lobe anterior segmental lung parenchyma. The patient was followed up with medical treatment and discharged in good health.
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Affiliation(s)
- M Bankir
- Department of Internal Medicine, University of Health Sciences - Adana Health Practice and Research Center, Adana, Turkey
| | - A S Koc
- Department of Radiology, University of Health Sciences - Adana Health Practice and Research Center, Adana, Turkey
| | - F F Gorgulu
- Department of Radiology, University of Health Sciences - Adana Health Practice and Research Center, Adana, Turkey
| | - H E Sumbul
- Department of Internal Medicine, University of Health Sciences - Adana Health Practice and Research Center, Adana, Turkey
| | - M Koc
- Department of Cardiology, University of Health Sciences - Adana Health Practice and Research Center, Adana, Turkey
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16
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Koc M. Radiological imaging findings of the hepatic tuberculosis. Med-Science 2021. [DOI: 10.5455/medscience.2021.02.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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17
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Koc M, Hardalac F, Ural B. A novel approach for hepatocellular carcinoma detection with region merging segmentation method. Med-Science 2021. [DOI: 10.5455/medscience.2020.10.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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18
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Atmaca M, Koc M, Mermi O, Korkmaz S, Aslan S, Yildirim H. Insula volumes are altered in patients with social anxiety disorder. Behav Brain Res 2020; 400:113012. [PMID: 33181184 DOI: 10.1016/j.bbr.2020.113012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 10/05/2020] [Accepted: 10/21/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE In the present study, we aimed at examining the volumes of the insula in more pure patients with a social anxiety disorder. METHODS We examined twenty-one patients with social anxiety disorder according to DSM-IV and twenty healthy controls. All patients and controls were applied to magnetic resonance imaging (MRI). Insula volumes were measured by using the manual tracing method in accordance with the standard anatomical atlases and related previous studies on insula volumes. RESULTS We found that the mean posterior and anterior insula volumes for both sides of patients were statistically significantly reduced compared to those of healthy control subjects. CONCLUSION Consequently, in the present study, we found that patients with a social anxiety disorder had reduced insula volumes compared to those of healthy control subjects. However, to get strong this finding, novel studies with a larger sample size are required.
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Affiliation(s)
- Murad Atmaca
- Firat University, School of Medicine, Department of Psychiatry, Elazig, Turkey.
| | - Mustafa Koc
- Firat University, School of Medicine, Department of Radiology, Elazig, Turkey
| | - Osman Mermi
- Firat University, School of Medicine, Department of Psychiatry, Elazig, Turkey
| | - Sevda Korkmaz
- Firat University, School of Medicine, Department of Psychiatry, Elazig, Turkey
| | - Sabriye Aslan
- Firat University, School of Medicine, Department of Psychiatry, Elazig, Turkey
| | - Hanefi Yildirim
- Firat University, School of Medicine, Department of Radiology, Elazig, Turkey
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19
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Vatanparast H, Koc M, Farag M, Garcea J, Engler-Stringer R, Qarmout T, Henry C, Racine L, White J, Iqbal R, Khakpour M, Dasarathi S, D'Angelo S. Exploring food security among recently resettled Syrian refugees: results from a qualitative study in two Canadian cities. IJMHSC 2020. [DOI: 10.1108/ijmhsc-03-2019-0031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Purpose
This study aims to provide a qualitative in-depth account of the status and experience of food insecurity for Syrian refugee households in Toronto and Saskatoon, Canada. The study considers the range of geographic, socio-economic, cultural and gendered components shaping and determining the barriers and management of food insecurity.
Design/methodology/approach
The study included 54 semi-structured interviews with refugee families in Toronto and Saskatoon who resettled in Canada after November 2015. In addition, 15 semi-structured in-person or telephone interviews were conducted with settlement and support agencies to measure their capacity to respond to issues of food insecurity for Syrian refugees.
Findings
Syrian refugees reported experiencing food insecurity as part of the broader resettlement journey, including in the transitional phase of refuge and in each settlement context in Canada. Income status in Canada was reported as a key barrier to food security. Low-income barriers to food security were experienced and shaped by factors including food affordability, physical access and availability and the extent of familial or other support networks including sponsorship relationships. Participants also reported how managing food insecurity contributed to the intensification of gender expectations.
Originality/value
The analysis reveals food insecurity as both an income and non-income based concern for refugees during the process of resettlement. The study also highlights the importance of considering variations between primary barriers to food security identified by Syrian families and key informants as critical to the development of strategies designed to mitigate the impacts of resettlement on food security.
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20
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Ucgul Atilgan C, Kosekahya P, Ozkoyuncu Kocabas D, Koc M, Sakir Goker Y. Densitometric analysis of cornea in patients with neovascular age-related macular degeneration after intravitreal aflibercept loading dose. Ther Adv Ophthalmol 2020; 12:2515841420950857. [PMID: 32923942 PMCID: PMC7457688 DOI: 10.1177/2515841420950857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 07/27/2020] [Indexed: 12/03/2022] Open
Abstract
Purpose: To evaluate the anatomic changes in the cornea and anterior segment following
intravitreal aflibercept loading dose for neovascular age-related macular
degeneration. Methods: The study included 40 eyes of 40 patients with neovascular age-related
macular degeneration. Each patient underwent a loading dose of one injection
per month for three consecutive doses of aflibercept (0.05 ml/2 mg). Before
and after the loading dose, a record was made for each patient of corneal
topography, anterior segment, corneal densitometry, and lens densitometry
parameters with the Pentacam HR and specular microscopy parameters with a
non-contact specular microscope. The data before and after the aflibercept
loading dose were compared. Results: Corneal densitometry parameters in the 0- to 2-mm and 2- to 6-mm concentric
zones of the posterior layer were significantly higher after the loading
dose compared with baseline (p = 0.03,
p = 0.04, respectively). Corneal densitometry parameters of
the anterior, central, and total corneal layer in the 10- to 12-mm
concentric zone were also significantly higher after the loading dose
compared with baseline (p = 0.009,
p = 0.02, and p = 0.007, respectively). No
significant changes were determined in respect of corneal topography,
anterior segment, lens densitometry, and specular microscopy parameters
(p > 0.05 for all). Conclusion: The aflibercept loading dose caused slightly increased densitometric values
in some corneal regions while it did not affect the corneal topography,
anterior segment, lens densitometry, and specular microscopy parameters.
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Affiliation(s)
- Cemile Ucgul Atilgan
- Deparment of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Pinar Kosekahya
- Deparment of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ulucanlar Street Number 59, 06240 Ankara, Turkey
| | - Dilara Ozkoyuncu Kocabas
- Department of Ophthalmology, Fatih Sultan Mehmet Training and Research Hospital, Istanbul, Turkey
| | - Mustafa Koc
- Department of Ophthalmology, Special Kayseri Maya Eye Hospital, Kayseri, Turkey
| | - Yasin Sakir Goker
- Deparment of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
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21
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Inanc M, Kiziltoprak H, Hekimoglu R, Tekin K, Ozalkak S, Koc M, Bayramoglu E, Zirh S, Yuruker S, Aycan Z. Alterations of Tear Film and Ocular Surface in Children with Type 1 Diabetes Mellitus. Ocul Immunol Inflamm 2020; 28:362-369. [PMID: 30806526 DOI: 10.1080/09273948.2019.1571212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Purpose: To investigate whether diabetes mellitus (DM) affects ocular surface of children with well-controlled type 1 DM.Methods: Sixty-five diabetic patients and 55 age-matched controls enrolled to study. Detailed ocular surface assessment including, ocular surface disease index (OSDI) questionnaire, tear film break-up time (TBUT) analysis, Schirmer test, and conjunctival impression cytologic analysis were performed.Results: Schirmer test and TBUT results were significantly lower in DM group than controls (p = 0.001, for all). OSDI scores of all participants were within normal range. Impression cytology analysis showed grade 0 changes in all participants and there was no difference between groups for goblet cell density (p > 0.05). The TBUT results were significantly associated with duration of DM (r = -0.309, p = 0.036).Conclusion: Diabetic children without symptoms, signs, and definite diagnosis of dry eye still had lower TBUT and Schirmer test results than controls; however, impression cytology analysis was similar in both groups.
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Affiliation(s)
- Merve Inanc
- Ophthalmology Department, Ercis State Hospital, Van, Turkey
| | - Hasan Kiziltoprak
- Department is Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Rumeysa Hekimoglu
- Histology and Embryology Department, Kastamonu University, Kastamonu, Turkey
| | - Kemal Tekin
- Ophthalmology Department, Ercis State Hospital, Van, Turkey
| | - Servan Ozalkak
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital, Ankara, Turkey
| | - Mustafa Koc
- Department is Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Elvan Bayramoglu
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital, Ankara, Turkey
| | - Selim Zirh
- Histology and Embryology Department, Hacettepe University, Ankara, Turkey
| | - Sinan Yuruker
- Histology and Embryology Department, Usak University, Usak, Turkey
| | - Zehra Aycan
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital, Ankara, Turkey
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22
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Koc M, Tekin K, Kiziltoprak H, Inanc M, Kosekahya P, Ozulken K, Durukan I. Topometric and Tomographic Evaluation of Subclinical Keratoconus. Ophthalmic Epidemiol 2020; 27:289-297. [PMID: 32172662 DOI: 10.1080/09286586.2020.1741010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
PURPOSE To investigate the corneal topometric and tomographic findings that can be used in the diagnosis of subclinical keratoconus. METHODS A retrospective cohort study. The study group was selected from patients with clinically evident keratoconus in one eye and subclinical keratoconus without evident topographic findings in fellow eye. The age-matched control group was selected from patients who were candidates for laser in situ keratomileusis (LASIK) and did not develop ectasia after LASIK surgery at least 1-year follow-up. All subjects underwent topographic, topometric and tomographic (Belin-Ambrósio Enhanced Ectasia Display III) analyses via a Pentacam HR rotating Scheimpflug camera (Oculus, Germany, version 1.20r.98) before LASIK surgery. RESULTS The study group consisted of 151 patients (69 male and 82 female, mean age of 24.8 ± 7.2 years) and the control group also consisted of 150 patients (70 male and 80 female, mean age of 26.0 ± 6.3 years). There were statistically significant differences in all measured topometric (p˂.05) and tomographic (p˂.001) parameters between the eyes with subclinical keratoconus and those of the control group. In discriminating eyes with subclinical keratoconus from normal eyes, final D showed the highest area under curve value (0.858, sensitivity 85.2%, specificity 66.7%), followed by maximum pachymetric progression index (0.809, sensitivity 81.9%, specificity 69.4%) and average pachymetric progression index (0.796, sensitivity 81.9%, specificity 68.1%) in receiver operating characteristic analysis. CONCLUSION Topometric and tomographic parameters might be useful for early detection of keratoconus, but the sensitivity and specificity of any parameter are not high enough to be used alone.
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Affiliation(s)
- Mustafa Koc
- Ophthalmology Department, Ankara Ulucanlar Eye Training and Research Hospital , Ankara, Turkey
| | - Kemal Tekin
- Ophthalmology Department, Ercis State Hospital , Van, Turkey
| | - Hasan Kiziltoprak
- Ophthalmology Department, Ankara Ulucanlar Eye Training and Research Hospital , Ankara, Turkey
| | - Merve Inanc
- Ophthalmology Department, Ercis State Hospital , Van, Turkey
| | - Pinar Kosekahya
- Ophthalmology Department, Ankara Ulucanlar Eye Training and Research Hospital , Ankara, Turkey
| | - Kemal Ozulken
- Ophthalmology Department, TOBB ETU Hospital , Ankara, Turkey
| | - Irfan Durukan
- Ophthalmology department, Era Eye Hospital , Ankara, Turkey
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23
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Yildirim M, Koc M. Isolated left diaphragm metastasis of rectum adenocarcinoma. Med-Science 2020. [DOI: 10.5455/medscience.2020.09.9220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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24
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Koc M. The investigation of clinical and radiological findings of igG4-related autoimmune pancreatitis. Med-Science 2020. [DOI: 10.5455/medscience.2020.09.9242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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25
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Koc M. Solitary plasmocytoma of the cranium: Magnetic resonance imaging findings. Med-Science 2020. [DOI: 10.5455/medscience.2020.09.9219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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26
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Adli M, Gulegen B, Alkis H, Ones T, Ozguven S, Koc M. 18F-FDG PET/CT Uptake as a Predictor of Tumor Response in Neoadjuvant Treatment of Rectal Cancer with Dose Escalation using Simultaneous Integrated Boost. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Kiziltoprak H, Koc M, Tekin K, Hekimoglu R, Inanc M, Yılmaz AA, Elmaoğulları S, Aycan Z. Local Ocular Surface Alterations in Children with Hashimoto's Thyroiditis. Ocul Immunol Inflamm 2019; 28:791-797. [PMID: 31414613 DOI: 10.1080/09273948.2019.1642495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE To evaluate the ocular surface characteristics based on Schirmer's test, tear break-up time (TBUT), and conjunctival impression cytology (CIC) in children with Hashimoto's thyroiditis (HT). METHODS This study included 51 children with HT and 53 control subjects. The ocular surface characteristics of participants were assessed via Schirmer's test, TBUT, and CIC. Conjunctival samples were examined cytologically according to the Nelson grading system. RESULTS Schirmer's and TBUT results were significantly lower in HT group (p < .05). All samples in both the study and control groups were evaluated as grade 0 according to the Nelson classification (p = .841), however, goblet cell density (GCD) was significantly lower in HT group (p = .001). Schirmer test results were significantly associated with the duration of HT (p = .025, r = -0.311). CONCLUSION Hashimoto's thyroiditis without any ocular complaints may cause ocular surface changes with TBUT and Schirmer's. Although CIC analysis showed similar grading results, GCD was significantly decreased in HT group.
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Affiliation(s)
- Hasan Kiziltoprak
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital , Ankara, Turkey
| | - Mustafa Koc
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital , Ankara, Turkey
| | - Kemal Tekin
- Ophthalmology Department, Ercis State Hospital , Van, Turkey
| | - Rumeysa Hekimoglu
- Histology and Embryology Department, Bezmialem University , Istanbul, Turkey
| | - Merve Inanc
- Ophthalmology Department, Ercis State Hospital , Van, Turkey
| | - Aslıhan Araslı Yılmaz
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital , Ankara, Turkey
| | - Selin Elmaoğulları
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital , Ankara, Turkey
| | - Zehra Aycan
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital , Ankara, Turkey
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28
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Koc M, Yucens M, Aydemir N, Yorukoglu AC, Guvenc K, Uzun C, Erdal N, Demirkan AF. Do adipofascial flaps affect the mechanical properties of a repaired tendon? A biomechanical rat model study. Hand Surg Rehabil 2019; 38:323-327. [PMID: 31386923 DOI: 10.1016/j.hansur.2019.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/16/2019] [Accepted: 07/25/2019] [Indexed: 11/18/2022]
Abstract
The aim of this study was to evaluate the effect of vascularized and non-vascularized fascial flaps on tendon healing, specifically the maximum strain, maximum stress, elasticity and resistance of the repaired tendon. Rats were randomly divided into 3 groups: Group 1 - primary repair; Group 2 - vascularized pedicled fascial graft; Group 3 - non-vascularized free fascial graft. The rats were euthanized after 2 weeks and 40mm-long samples were taken from the Achilles tendon and gastrocnemius muscle. To evaluate the mechanical properties of the tendons, maximum load, maximum deformation, energy stored until yield point and stiffness on the load-deformation curve were measured. Based on this mechanical testing, the best group in terms of tissue strength and quality was the primary repair group. When the samples were examined individually, the two samples with the highest breaking force after the control group were in the pedicled graft group. The worst results overall were in the free graft group. We believe that if the blood flow is preserved for the fascial flap in the pedicled graft group, the tendon's breaking force would be higher.
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Affiliation(s)
- M Koc
- Faculty Depth of Orthopaedics and Hand Surgery, Pamukkale University Medical, Denizli, Turkey.
| | - M Yucens
- Faculty Depth of Orthopaedics, Pamukkale University Medical, 20160 Denizli, Turkey.
| | - N Aydemir
- Faculty Depth of Orthopaedics, Pamukkale University Medical, 20160 Denizli, Turkey.
| | - A C Yorukoglu
- Faculty Depth of Orthopaedics, Pamukkale University Medical, 20160 Denizli, Turkey.
| | - K Guvenc
- Faculty Depth of Orthopaedics and Hand Surgery, Pamukkale University Medical, Denizli, Turkey.
| | - C Uzun
- Faculty Depth of Biophysics, Mersin University Medical, İhsaniye Mh., 32133 Sokak Çiftlikköy Kampüsü, 33079 Yenişehir-Mersin, Turkey.
| | - N Erdal
- Faculty Depth of Biophysics, Mersin University Medical, İhsaniye Mh., 32133 Sokak Çiftlikköy Kampüsü, 33079 Yenişehir-Mersin, Turkey.
| | - A F Demirkan
- Faculty Depth of Orthopaedics, Pamukkale University Medical, 20160 Denizli, Turkey.
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29
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Koc M, Aydemir E, Tekin K, Inanc M, Kosekahya P, Kiziltoprak H. Biomechanical Analysis of Subclinical Keratoconus With Normal Topographic, Topometric, and Tomographic Findings. J Refract Surg 2019; 35:247-252. [PMID: 30984982 DOI: 10.3928/1081597x-20190226-01] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 02/26/2019] [Indexed: 11/20/2022]
Abstract
PURPOSE To investigate the corneal biomechanical responses of subclinical keratoconus with normal topographic, topometric, and tomographic findings. METHODS In this prospective observational study, the study group was selected from patients with clinically evident keratoconus in one eye and subclinical keratoconus with normal topographic, topometric, and tomographic findings in the fellow eye. The control group was selected from candidates for contact lens use. The biomechanical analyses were performed using the Corvis ST (Oculus Optikgeräte, Wetzlar, Germany). The following parameters were analyzed: A1 velocity, A2 velocity, A1 length, A2 length, deformation amplitude ratio, stiffness parameter at the first applanation, Corvis Biomechanical Index, and Tomographic and Biomechanical Index (TBI). RESULTS The study group consisted of 21 patients (10 men and 11 women; mean age: 27.7 ± 6.9 years), and the control group consisted of 35 patients (17 men and 18 women; mean age: 26.1 ± 5.8 years). No significant differences were found between the eyes with subclinical keratoconus and normal eyes in corrected distance visual acuity and the topographic, topometric, and tomographic parameters (P > .05). Significant differences were found in the values of A2 length, A1 velocity, A2 velocity, and TBI between the subclinical keratoconus group and the control group (P < .05). In distinguishing eyes with subclinical keratoconus from normal eyes, the TBI showed the highest area under the curve (0.790; cut-off: 0.29; sensitivity: 67%; specificity: 86%) in the receiver operating characteristic analysis. CONCLUSIONS Biomechanical analysis with the Corvis ST may be used as a complementary diagnostic method in detecting subclinical keratoconus. [J Refract Surg. 2019;35(4):247-252.].
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Tekin K, Koc M. Progression in a patient with subclinical keratoconus: Is corneal crosslinking necessary? J Cataract Refract Surg 2019; 45:881-882. [PMID: 31146937 DOI: 10.1016/j.jcrs.2019.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Indexed: 11/28/2022]
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Avci A, Avci BS, Donmez Y, Kocer M, Gulen M, Ozer AI, Bulut A, Koc M, Nazik H, Satar S. Which one predicts mortality better? Hemogram and ST elevation myocardial infarction. Niger J Clin Pract 2019; 22:598-602. [PMID: 31089012 DOI: 10.4103/njcp.njcp_540_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective The aim of this study was to determine the effectiveness of hematological parameters measured at the moment of admission to the emergency room in predicting in-hospital mortality and to determine cut-off values of strongly predictive values. Subjects and Methods The study began with approval of the ethics committee. In total, 1,929 patients over 18 years of age, whose date could be obtained, were included in the study. From the hemogram parameters, white blood cells (WBC), red cell distribution width, mean platelet volume, and ratio of neutrophils to lymphocytes (NLR) values were determined and recorded. CK-MB and high-sensitive Troponin T values were recorded as cardiac markers. For statistical analysis, "SPSS for Windows Version 21" package program was used. Findings About 71.7% (n = 1384) of the patients were male and 28.3% (n = 545) of the patients were female. About 92.5% of the patients (n = 1785) were discharged from the hospital, whereas the remaining 144 patients (7.5%) were exitus in the hospital. When the efficacy of hematological parameters and cardiac markers in predicting mortality was examined by receiver operating charecteristics analysis, NLR was found to be the strongest predictor (area under the curve [AUC], 0.772, standard deviation [SD] = 0.022, 95% confidence interval [CI]). It was found that the WBC value came in second place after NLR as a strong predictor of mortality (AUC, 0.749, SD = 0.024, % 95 CI). Conclusion The use of predictors for the prediction of mortality for ST elevation myocardial infarction patients is of great importance for faster implementation of treatment modalities. We found that WBC and especially NLR values obtained with a simple method can be used as powerful predictors.
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Affiliation(s)
- A Avci
- Department of Emergency Medicine, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - B S Avci
- Department of Internal Medicine, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - Y Donmez
- Department of Cardiology, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - M Kocer
- Department of Emergecy Medicine, Balıklıgöl State Hospital, Emergency Service, Şanlıurfa, Turkey
| | - M Gulen
- Department of Emergency Medicine, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - A I Ozer
- Department of Emergency Medicine, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - A Bulut
- Department of Cardiology, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - M Koc
- Department of Cardiology, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - H Nazik
- Department of Gynecology, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
| | - S Satar
- Department of Emergency Medicine, Health Science University, Adana City Research and Training Hospital, Adana, Turkey
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Khakpour M, Iqbal R, GhulamHussain N, Engler-Stringer R, Koc M, Garcea J, Farag M, Henry C, Vatanparast H. Facilitators and Barriers toward Food Security of Afghan Refugees Residing in Karachi, Pakistan. Ecol Food Nutr 2019; 58:317-334. [PMID: 30991835 DOI: 10.1080/03670244.2019.1598982] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The present study comparatively assesses how Afghan refugees in Pakistan understand both the factors and barriers affecting their food security status before and after refuge. Through qualitative in-depth interviews with 25 Afghan refugee families, we assess how quality of life, together with perceptions of a balanced meal, food environments both pre- and post-migration and push and pull factors of migration, impact food security and food choices for refugee families. Furthermore, our results reveal that regardless of the length of protracted status for Afghan refugees, food insecurity remains as a consistent condition for refugee families.
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Affiliation(s)
- Mahasti Khakpour
- a Department of Nutrition, College of Pharmacy and Nutrition , University of Saskatchewan , Saskatoon , SK , Canada
| | - Romaina Iqbal
- b Department of Community Health Sciences , Aga Khan University , Karachi , Pakistan
| | - Naveera GhulamHussain
- c Department of Community Health Science , Agha Khan University , Karachi , Pakistan
| | - Rachel Engler-Stringer
- d Community Health and Epidemiology , University of Saskatchewan , Saskatoon , SK , Canada
| | - Mustafa Koc
- e Department of Sociology , Ryerson University , Toronto , ON , Canada
| | - Joseph Garcea
- f Political Studies , University of Saskatchewan , Saskatoon , SK , Canada
| | - Marwa Farag
- g School of Public Health , University of Saskatchewan , Saskatoon , SK , Canada
| | - Carol Henry
- a Department of Nutrition, College of Pharmacy and Nutrition , University of Saskatchewan , Saskatoon , SK , Canada
| | - Hassan Vatanparast
- h College of Pharmacy and Nutrition , University of Saskatchewan , SK , Canada
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Koc M, Kosekahya P, Inanc M, Tekin K. Corneal crosslinking in a case with Axenfeld-Rieger syndrome and unilateral pellucid marginal degeneration. Ther Adv Ophthalmol 2019; 11:2515841418822288. [PMID: 30729234 PMCID: PMC6350116 DOI: 10.1177/2515841418822288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/07/2018] [Indexed: 11/17/2022] Open
Abstract
A 31-year-old male patient presented with the complaint of progressive vision loss in his left eye. Slit-lamp examination showed posterior embryotoxon, iris hypoplasia, and iridocorneal adhesion in both eyes, corectopia in the right, and peripheral inferior thinning and ectasia in the left eye. Corneal topography showed slightly asymmetric bowtie pattern in the right eye and crab-claw pattern in the left eye. Topographic examination was compared with his previous topography. The comparison showed 1.6-D steepening of maximum keratometry (Kmax) and 22-µm decrease of thinnest corneal pachymetry. Corneal crosslinking treatment was performed on the left eye. At the postoperative 28-month follow-up visit, Kmax decreased from 54.1 to 53.0 D and corrected distance visual acuity improved to 20/20 with scleral lens. This is the first reported a case with Axenfeld–Rieger syndrome and pellucid marginal degeneration association. We suggest that corneal crosslinking can be useful for management of pellucid marginal degeneration and longer follow-up might be needed in order to corroborate the effectiveness of the corneal crosslinking procedure.
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Affiliation(s)
- Mustafa Koc
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Pinar Kosekahya
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Merve Inanc
- Ophthalmology Department, Ercis State Hospital, Van, Turkey
| | - Kemal Tekin
- Ophthalmology Department, Ercis State Hospital, Van, Turkey
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Kosekahya P, Ucgul Atilgan C, Atilgan KG, Koc M, Tekin K, Caglayan M, Goker YS. Increased Corneal Ectasia Risk in Patients with Familial Mediterranean Fever. Curr Eye Res 2018; 44:351-355. [PMID: 30482054 DOI: 10.1080/02713683.2018.1554150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE To evaluate the corneal tomographic parameters in patients with familial Mediterranean fever (FMF) and to compare data with those of healthy control subjects. MATERIALS AND METHODS Forty eyes of 40 patients with FMF (FMF group) and 35 eyes of 35 healthy subjects (control group) were included to this prospective study. All participants underwent complete ophthalmological examination and tomographic analysis with Pentacam HR. Maximum keratometry, front and back astigmatism, thinnest pachymetry, maximum anterior and posterior elevation best-fit-sphere (BFS) at the 5.0 mm zone, front and back difference elevation, final D, average and maximum pachymetric progression index, and maximum Ambrósio relational thickness parameters were noted. RESULTS Groups were similar in terms of age and gender (p = 0.77 and 0.35). Maximum keratometry, thinnest pachymetry, front and back astigmatism, and maximum anterior elevation BFS at the 5.0 mm values were similar between groups (p = 0.22, 0.52, 0.49, 0.29, and 0.31, respectively). Maximum posterior elevation BFS at the 5.0 mm and back difference elevation values were higher than control group in FMF group (p = 0.001 and 0.04). The mean values of final D, average and maximum pachymetric progression index were higher, and Ambrósio relational thickness was lower in FMF group compared to control group (p = 0.03, 0.002, 0.006, and 0.01, respectively). CONCLUSIONS FMF patients carry increased corneal ectasia risk compared to healthy subjects. The corneal tomographic characteristics and the association of keratoconus with FMF may be important in a detailed refractive surgery work-up.
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Affiliation(s)
- Pinar Kosekahya
- a Department of Ophthalmology , Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Cemile Ucgul Atilgan
- a Department of Ophthalmology , Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Kadir Gokhan Atilgan
- b Department of Nephrology , Diskapi Yildirim Beyazit Training and Research Hospital , Ankara , Turkey
| | - Mustafa Koc
- a Department of Ophthalmology , Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Kemal Tekin
- c Department of Ophthalmology , Van Ercis State Hospital , Van , Turkey
| | - Mehtap Caglayan
- d Department of Ophthalmology , Gazi Yasargil Training and Research Hospital , Diyarbakir , Turkey
| | - Yasin Sakir Goker
- a Department of Ophthalmology , Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
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Goker YS, Ucgul Atılgan C, Tekin K, Kızıltoprak H, Yetkin E, Yesil Karahan N, Koc M, Kosekahya P. The Validity of Optical Coherence Tomography Angiography as a Screening Test for the Early Detection of Retinal Changes in Patients with Hydroxychloroquine Therapy. Curr Eye Res 2018; 44:311-315. [PMID: 30403878 DOI: 10.1080/02713683.2018.1545912] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE The aim of this study was to quantitatively compare both the vessel density of macular capillary plexuses and the foveal avascular zone (FAZ) areas of patients receiving hydroxychloroquine (HCQ) therapy for more than 5 years while using age- and sex-matched controls. METHODS The patients undergoing HCQ who were screened for toxic effects were evaluated. The FAZ parameters included the area, perimeter, and the acircularity index. The foveal density and vessel density values of both the superficial capillary plexus (SCP) and deep capillary plexus (DCP) were measured using optical coherence tomography angiography (OCTA). RESULTS This study included 80 eyes of 40 subjects: 20 subjects in the HCQ group and 20 subjects in the control group. The FAZ perimeter and the FAZ area in the SCP and full retinal vasculature were significantly larger in the HCQ group than in the control group (p < 0.05 for all). Additionally, the vessel density of fovea in the SCP and DCP was significantly lower in the HCQ group than in the control group (p < 0.05 for all). CONCLUSIONS OCTA provides objective documentation about FAZ and vessel density features in patients using long-term HCQ therapy before toxicity begins, and it can be used as a screening tool for detecting early changes in the macula.
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Affiliation(s)
- Yasin Sakir Goker
- a Department of Ophthalmology , Ankara Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Cemile Ucgul Atılgan
- a Department of Ophthalmology , Ankara Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Kemal Tekin
- b Department of Ophthalmology , Van Erciş State Hospital , Van , Turkey
| | - Hasan Kızıltoprak
- a Department of Ophthalmology , Ankara Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Esat Yetkin
- a Department of Ophthalmology , Ankara Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Nesibe Yesil Karahan
- c Department of Rheumatology , Ankara Training and Research Hospital , Ankara , Turkey
| | - Mustafa Koc
- a Department of Ophthalmology , Ankara Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
| | - Pınar Kosekahya
- a Department of Ophthalmology , Ankara Ulucanlar Eye Training and Research Hospital , Ankara , Turkey
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Kosekahya P, Koc M, Caglayan M, Kiziltoprak H, Tekin K, Atilgan CU. Longitudinal corneal tomographical changes in eyes of patients with unilateral and bilateral non-progressive keratoconus. Cont Lens Anterior Eye 2018; 42:434-438. [PMID: 30413377 DOI: 10.1016/j.clae.2018.10.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/27/2018] [Accepted: 10/31/2018] [Indexed: 11/19/2022]
Abstract
AIM To evaluate the tomographic indices changes in keratoconic eyes which were classified as unilateral and bilateral non-progressive keratoconus according to the definition of Global Consensus on keratoconus and ectatic disease. METHODS Fifty non-progressive fellow eyes of 50 keratoconus patients who underwent corneal cross-linking treatment for the other progressive eyes (group 1), 50 eyes of 50 keratoconus patients who were followed up as bilateral non-progressive keratoconus (group 2), and 50 eyes of 50 control subjects (group 3) were included in this retrospective study. Topographic, topometric, and Belin-Ambrósio Enhanced Ectasia Display-III indices were recorded at baseline and after six months. RESULTS Groups were similar in terms of age and gender. The changes in topographic parameters and topometric indices were similar among the three groups (p > 0.05 for all values). The maximum pachymetric progression index (PPImax), maximum Ambrósio relational thickness (ARTmax), and final D significantly increased at sixth-months in group 1 (p < 0.001, p = 0.004, and p = 0.02 respectively) but did not change in groups 2 and 3 (p > 0.05 for all values). ARTmax, PPImax, and final D value changes indicated a statistically significant difference among the groups using the one-way ANOVA test (p = 0.03, p = 0.007, and p = 0.03 respectively). The Bonferroni posttest revealed that these values increased at a higher rate in group 1 than in group 2 (p = 0.03, p = 0.01, and p = 0.04 respectively) and group 3 (p = 0.04, p = 0.03, and p = 0.04, respectively). CONCLUSIONS Fellow eyes of keratoconus patients who have underwent CXL for their progressive eyes may be more prone to progress than the patients who have no progression in both eyes. Screening unilateral non-progressive patients more closely than those with bilateral non-progressive patients and evaluating the changes in final D, ARTmax, and PPImax values may be helpful in the follow up of non-progressive keratoconus.
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Affiliation(s)
- Pinar Kosekahya
- Ulucanlar Eye Training and Research Hospital, Department of Ophthalmology, Ankara, Turkey.
| | - Mustafa Koc
- Ulucanlar Eye Training and Research Hospital, Department of Ophthalmology, Ankara, Turkey
| | - Mehtap Caglayan
- Gazi Yasargil Training and Research Hospital, Department of Ophthalmology, Diyarbakir, Turkey
| | - Hasan Kiziltoprak
- Ulucanlar Eye Training and Research Hospital, Department of Ophthalmology, Ankara, Turkey
| | - Kemal Tekin
- Ercis State Hospital, Department of Ophthalmology, Van, Turkey
| | - Cemile Ucgul Atilgan
- Ulucanlar Eye Training and Research Hospital, Department of Ophthalmology, Ankara, Turkey
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Uzel MM, Koc M, Can C, Polat S, Yılmazbaş P, Ileri D. Effect of accelerated corneal crosslinking on ocular response analyzer waveform-derived parameters in progressive keratoconus. Arq Bras Oftalmol 2018; 82:18-24. [PMID: 30403263 DOI: 10.5935/0004-2749.20190003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 05/19/2018] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To evaluate the effect of accelerated corneal crosslinking on corneal biomechanics with an ocular response analyzer in patients with progressive keratoconus. METHODS In this retrospective study, 50 eyes of 45 patients with progressive keratoconus who underwent accelerated corneal crosslinking were evaluated with ocular response analyzer waveform parameters before and one year after corneal crosslinking. Paired two-tailed Student's t-test was performed to compare the parameters before vs. after corneal crosslinking. RESULTS Mean patient age was 17.6 ± 3.6 (range 9-25) years. A significant increase was observed in p1 area, p2 area, h2, and dive2 values. No significant difference in corneal hysteresis, corneal resistance factor, or other waveform-derived parameters was observed at one year postoperatively. CONCLUSION For estimating the effect of accelerated corneal crosslinking on corneal biomechanics, parameters such as p1 area, p2 area, h2, and dive2 are more sensitive than corneal hysteresis and corneal resistance factor. These results may help us to find out which corneal crosslinking method is most effective for stiffening the cornea.
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Affiliation(s)
- Mehmet Murat Uzel
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Mustafa Koc
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Cigdem Can
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Sibel Polat
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Pelin Yılmazbaş
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Dilek Ileri
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
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Skowronska M, Plywaczewska M, Koc M, Pacho S, Wyzgal-Chojecka A, Ciurzynski M, Kurnicka K, Jankowski K, Lipinska A, Palczewski P, Bienias P, Uchacz K, Karolak B, Kostrubiec M, Pruszczyk P. P1619Bova score for the prediction of in-hospital adverse events in patients with acute pulmonary embolism. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Skowronska
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - M Plywaczewska
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - M Koc
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - S Pacho
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - A Wyzgal-Chojecka
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - M Ciurzynski
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - K Kurnicka
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - K Jankowski
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - A Lipinska
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - P Palczewski
- Medical University of Warsaw, 1st Dept. of Radiology, Warsaw, Poland
| | - P Bienias
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - K Uchacz
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - B Karolak
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - M Kostrubiec
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
| | - P Pruszczyk
- Medical University of Warsaw, Dept. of Internal Medicine and Cardiology, Warsaw, Poland
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Tekin K, Kiziltoprak H, Koc M, Goker YS, Kocer AM, Yilmazbas P. The effect of corneal infiltrates on densitometry and higher-order aberrations. Clin Exp Optom 2018; 102:140-146. [PMID: 30107640 DOI: 10.1111/cxo.12828] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/05/2018] [Accepted: 07/12/2018] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND This study aimed to measure the effects of persistent corneal subepithelial infiltrates associated with epidemic keratoconjunctivitis on corneal densitometry and total corneal higher order aberrations (HOAs), and to compare these measurements with the data obtained from their fellow unaffected healthy eyes. METHODS This prospective cross-sectional study included those who had persistent subepithelial infiltrates in only the affected eyes for at least three months and clinically normal fellow unaffected eyes. Corneal densitometry was measured with the densitometry software of the Pentacam HR-Scheimpflug corneal topographer over a 12 mm diameter of cornea. Further, total corneal HOAs including coma (Z[1,3], Z[3,-1]), trefoil (Z[3], Z[3,-3]), spherical aberration, higher order root mean square (HO-RMS), and total RMS in the Zernike analysis were analysed by the same Pentacam HR device. RESULTS Forty-six eyes of 23 participants were analysed in this study. The mean corneal densitometry values were statistically significantly higher in all annular concentric areas (0-2, 2-6, 6-10, and 10-12 mm) of the anterior and central corneal layers in the eyes with subepithelial infiltrates when compared to normal fellow eyes (p < 0.05, for each one). Additionally, there were statistically significant differences between the eyes with subepithelial infiltrates and normal fellow eyes with regard to coma, trefoil, HO-RMS, and total RMS in the Zernike analysis (p < 0.05, for each one). CONCLUSION This study quantitatively demonstrated that persistent corneal subepithelial infiltrates associated with epidemic keratoconjunctivitis decrease corneal transparency and corneal optical quality in affected eyes.
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Affiliation(s)
- Kemal Tekin
- Ophthalmology Department, Ercis State Hospital, Van, Turkey
| | - Hasan Kiziltoprak
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Mustafa Koc
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Yasin Sakir Goker
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Ali Mert Kocer
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Pelin Yilmazbas
- Ophthalmology Department, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
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Tekin K, Koc M. Corneal hysteresis and corneal resistance factor in pellucid marginal degeneration. J Curr Ophthalmol 2018; 30:186. [PMID: 29988894 PMCID: PMC6033774 DOI: 10.1016/j.joco.2017.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Accepted: 11/10/2017] [Indexed: 11/18/2022] Open
Affiliation(s)
- Kemal Tekin
- Kars State Hospital, Kars, Turkey.,Ulucanlar Eye Training and Research Hospital, Ophthalmology Department, Ankara, Turkey
| | - Mustafa Koc
- Ulucanlar Eye Training and Research Hospital, Ophthalmology Department, Ankara, Turkey
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Tekin K, Inanc M, Koc M. Re: The factors influencing retinal thickness in diabetic patients. Clin Exp Optom 2018; 101:807-808. [PMID: 29740864 DOI: 10.1111/cxo.12692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 04/02/2018] [Indexed: 11/29/2022] Open
Affiliation(s)
- Kemal Tekin
- Department of Ophthalmology, Ercis State Hospital, Van, Turkey
| | - Merve Inanc
- Department of Ophthalmology, Ercis State Hospital, Van, Turkey
| | - Mustafa Koc
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
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Kaypakli O, Koca H, Sahin DY, Karatas F, Ozbicer S, Koc M. P777S-R difference in V1-V2 is a novel criterion for differentiating the left from right ventricular outflow tract arrhythmias. Europace 2018. [DOI: 10.1093/europace/euy015.381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- O Kaypakli
- Mustafa Kemal University, Faculty of Medicine, Cardiology, Hatay, Turkey
| | - H Koca
- Adana Numune Training and Research Hospital, Adana, Turkey
| | - D Y Sahin
- Adana Numune Training and Research Hospital, Adana, Turkey
| | - F Karatas
- Adana Numune Training and Research Hospital, Adana, Turkey
| | - S Ozbicer
- Adana Numune Training and Research Hospital, Adana, Turkey
| | - M Koc
- Adana Numune Training and Research Hospital, Adana, Turkey
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Tekin K, Inanc M, Kurnaz E, Bayramoglu E, Aydemir E, Koc M, Kiziltoprak H, Aycan Z. Quantitative evaluation of early retinal changes in children with type 1 diabetes mellitus without retinopathy. Clin Exp Optom 2018; 101:680-685. [PMID: 29488254 DOI: 10.1111/cxo.12667] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 12/14/2017] [Accepted: 12/15/2017] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND To investigate whether abnormal glucose metabolism and duration of diabetes mellitus (DM) caused the thinning in retinal layers in children with type 1 DM without retinopathy by using spectral domain optical coherence tomography (SD-OCT) and to compare the results obtained with those in healthy children. METHODS This cross-sectional prospective study included 73 patients with type 1 DM (DM group) and 62 age-matched control subjects (control group). The duration of DM and the glycosylated haemoglobin (HbA1c) levels of the diabetic children were recorded. Macular and peripapillary retinal nerve fibre layer (RNFL) thickness measurements obtained by SD-OCT were compared. RESULTS There were significant differences in the mean values of the temporal inner, temporal outer and inferior outer macular thickness measurements between the groups (p = 0.031, p = 0.028 and p = 0.039, respectively). Moreover, the children with type 1 DM showed significantly thinner global, temporal superior and nasal inferior RNFL thickness measurements compared to the controls (p = 0.035, p = 0.022 and p = 0.034, respectively). Additionally, both the mean duration of DM and the mean HbA1c values were inversely and statistically significantly correlated with the mean temporal outer macular thickness and global RNFL thickness measurements in the DM group. CONCLUSIONS Retinal neural changes, which can be shown by SD-OCT, may be present in diabetic eyes even before clinically detectable retinal vasculopathy. Macular and RNFL thickness measurements might be useful indicators for early detection of diabetic retinopathy in the future.
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Affiliation(s)
- Kemal Tekin
- Ophthalmology Department, Kars State Hospital, Kars, Turkey
| | - Merve Inanc
- Ophthalmology Department, Ankara Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Erdal Kurnaz
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital, Ankara, Turkey
| | - Elvan Bayramoglu
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital, Ankara, Turkey
| | - Emre Aydemir
- Ophthalmology Department, Ankara Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Mustafa Koc
- Ophthalmology Department, Ankara Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Hasan Kiziltoprak
- Ophthalmology Department, Ankara Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Zehra Aycan
- Department of Pediatric Endocrinology, Dr. Sami Ulus Children's Health and Disease Training and Research Hospital, Ankara, Turkey
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Affiliation(s)
| | - Serdar Ozates
- Ulucanlar Eye Research and Training Hospital, Ophthalmology Department, Ankara, Turkey
| | - Mustafa Koc
- Ulucanlar Eye Research and Training Hospital, Ophthalmology Department, Ankara, Turkey
| | - Ayse Guzin Taslipinar Uzel
- Yıldırım Beyazıt University, Ataturk Research and Training Hospital, Ophthalmology Department, Ankara, Turkey
| | - Pelin Yılmazbaş
- Ulucanlar Eye Research and Training Hospital, Ophthalmology Department, Ankara, Turkey
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Kosekahya P, Koc M, Caglayan M, Kiziltoprak H, Atilgan CU, Yilmazbas P. Repeatability and reliability of ectasia display and topometric indices with the Scheimpflug system in normal and keratoconic eyes. J Cataract Refract Surg 2018; 44:63-70. [DOI: 10.1016/j.jcrs.2017.10.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 10/09/2017] [Accepted: 10/10/2017] [Indexed: 11/16/2022]
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Inanc M, Tekin K, Erol YO, Sargon MF, Koc M, Budakoglu O, Yılmazbas P. The ultrastructural alterations in the lens capsule and epithelium in eyes with traumatic white cataract. Int Ophthalmol 2017; 39:47-53. [PMID: 29189944 DOI: 10.1007/s10792-017-0783-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 11/24/2017] [Indexed: 11/25/2022]
Abstract
PURPOSE To demonstrate the morphological and physiological characteristics of lens epithelial cells (LECs) in patients with traumatic cataract using transmission electron microscopy (TEM) to further understand penetrating ocular injury-induced cataract morphology and epithelial repair mechanisms involved at a cellular level. METHODS This is a prospective international study. Sixteen eyes of 16 consecutive patients who were diagnosed as traumatic white cataracts following the anterior lens capsule perforation and 13 eyes of 13 patients with idiopathic posterior subcapsular cataract were included to the study. The anterior lens capsules (aLCs: basement membrane and associated LECs) were obtained from cataract surgery and prepared for TEM. RESULTS Two prominent cell types were observed in all aLCs of the traumatic cases: degenerated type LECs having variable sized intraepithelial vacuoles close to injury site and normal appearing LECs having an euchromatic nucleus distant from the injury site. In control group, the LECs and all their elements were in normal ultrastructural pattern except some small intraepithelial vacuoles, which were fewer and smaller than the vacuoles in the degenerated LECs of the traumatic group. CONCLUSIONS The ultrastructural findings of our cases support that traumatically induced dysfunction of the lens epithelium may lead to an edema in superficial cortical lens fibers that subsequently undergo degeneration and produce a localized zone of vacuolization.
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Affiliation(s)
- Merve Inanc
- Ankara Ulucanlar Eye Training and Research Hospital, Ankara, 06240, Turkey.
| | | | | | | | - Mustafa Koc
- Ankara Ulucanlar Eye Training and Research Hospital, Ankara, 06240, Turkey
| | - Ozlem Budakoglu
- Ankara Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Pelin Yılmazbas
- Ankara Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
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Kosekahya P, Caglayan M, Unal O, Yuzbasioglu S, Koc M, Ucgul Atilgan C, Yulek F. Optic Nerve Head Elastometry in Both Eyes of Patients with Unilateral Non-arteritic Anterior Ischaemic Optic Neuropathy - May It Be a Novel Aspect of the Pathogenesis? Neuroophthalmology 2017; 42:222-228. [PMID: 30042792 DOI: 10.1080/01658107.2017.1397702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 10/24/2017] [Accepted: 10/24/2017] [Indexed: 12/21/2022] Open
Abstract
In this prospective study, the biomechanical properties of optic nerve head (ONH) and cornea in both eyes of patients with non-arteritic anterior ischaemic optic neuropathy and healthy control eyes were investigated. ONH elastometry was measured with real-time elastography, and corneal elastometry was measured with ocular response analyser. Elastometry of cornea and ONH was lower in both eyes of patients with unilateral non-arteritic ischaemic optic neuropathy than in healthy control eyes. The role of these biomechanical differences in the pathogenesis of non-arteritic ischaemic optic neuropathy should be investigated further.
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Affiliation(s)
- Pinar Kosekahya
- Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - Mehtap Caglayan
- Department of Ophthalmology, Mardin State Hospital, Mardin, Turkey
| | - Ozlem Unal
- Department of Radiology, Ataturk Training and Research Hospital, Ankara, Turkey
| | - Sema Yuzbasioglu
- Department of Ophthalmology, Ataturk Training and Research Hospital, Ankara, Turkey
| | - Mustafa Koc
- Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | | | - Fatma Yulek
- Department of Ophthalmology, Yildirim Beyazit University Ataturk Research and Training Hospital, Ankara, Turkey
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Okar S, Kaypakli O, Sahin D, Koc M. 073_16225-H5 Fibrosis Marker Soluble ST2 for Prediction of Atrial Fibrillation Recurrence After Cryoballoon Catheter Ablation. JACC Clin Electrophysiol 2017. [DOI: 10.1016/j.jacep.2017.09.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kanyilmaz G, Onder H, Aktan M, Koc M, Bora H, Eray K, Yirmibesoglu E. Prognostic Importance of Ki-67 Labeling Index in WHO Grade II Glial Tumors. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Koc M, Tekin K, Inanc M, Kosekahya P, Yilmazbas P. Crab claw pattern on corneal topography: pellucid marginal degeneration or inferior keratoconus? Eye (Lond) 2017; 32:11-18. [PMID: 28937143 DOI: 10.1038/eye.2017.198] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 08/01/2017] [Indexed: 11/09/2022] Open
Abstract
PurposeTo evaluate the topographic, tomographic, and densitometric properties of patients with pellucid marginal degeneration (PMD) and inferior keratoconus.Patients and methodsRetrospective, comparative case series. Forty-seven eyes of 32 patients with crab claw patterns were identified from 2751 patients with corneal ectasia. They were divided into two groups, inferior keratoconus and PMD, based on clinical findings. The topographic, tomographic, and densitometric measurements were analyzed.ResultsPMD was detected in 11 eyes of eight patients (mean age 50.2±11.1 years), and inferior keratoconus was detected in 36 eyes of 24 patients (mean age 34.7±10.1 years). The control group consisted of 40 patients (33.1±4.6 years). The thinnest corneal point and maximum anterior and posterior elevation points were located lower in the PMD than in the inferior keratoconus (P<0.01). In the PMD, all deviation indices were higher than the controls (P<0.01), whereas the deviation indices, except Dt (P=0.960), were lower than the inferior keratoconus (P<0.01). The densitometry values of PMD were significantly higher than those of the controls in all zones and layers (P<0.01) and significantly higher than the densitometry values of inferior keratoconus in the 6-10 and 10-12 mm zones (P<0.05).ConclusionThere is a higher probability of a patient with crab claw pattern on the topography of having inferior keratoconus than having PMD. Therefore, analyzing only the anterior corneal surface is not sufficient in differential diagnosis. Tomographic and densitometric evaluations may facilitate the differential diagnosis.
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Affiliation(s)
- M Koc
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - K Tekin
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - M Inanc
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - P Kosekahya
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
| | - P Yilmazbas
- Department of Ophthalmology, Ulucanlar Eye Training and Research Hospital, Ankara, Turkey
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