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    Are VEGF and SCUBE1 gene expressions increased in diabetic retinopathy?
    (Walter De Gruyter Gmbh, 2023) Ayan, Durmus; Zor, Kuersad Ramazan; Ozmen, Esma; Bicer, Gamze Yildirim; Onder, Cagatay Emir; Sari, Ismail
    Objectives: In the current study, we synergistically evaluated vascular endothelial growth factor (VEGF) gene expression levels and signal peptide-CUB-EGF domain-containing protein 1 (SCUBE1) gene expression levels in diabetic patients without retinopathy, non-proliferative diabetic retinopathy (NPDR), and proliferative diabetic retinopathy (PDR).Methods: 94 blood samples from 26 healthy controls, 29 non-DR, 22 NPDR, and 17 PDR patients were collected in sterile EDTA tubes. Total RNA was obtained from these samples without waiting and then converted to cDNA. The expression levels of the VEGF and SCUBE1 genes were determined by quantitative real-time polymerase chain re-action (qPCR).Results: SCUBE1 gene expression levels were 2.15 (p=0.015), 1.75 (p=0.799), 2.37 (p=0.037) times higher, and VEGF gene expression levels were 1.71 (p=0.023), 1.75 (p=0.012), 1.85 (p=0.031) times higher in the non-DR, NPDR, and PDR groups compared to the control group, respectively. VEGF gene expression levels were significantly higher in participants with HbA1c levels >= 5.7% compared to those with < 5.7. SCUBE1 and VEGF gene expression levels were significantly higher in participants with fasting plasma glucose (FPG) levels >= 126 mg/dL than those with < 126 mg/dL.Conclusions: As a result, SCUBE1 gene expression levels are higher than VEGF gene expression levels, especially in the PDR group. Therefore, SCUBE1 may contribute to the pathology of DR just like VEGF by generating angiogenesis. However, we believe there isa need for experimental animal model studies with DR examining SCUBE1 gene expression levels in tissue samples.
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    Clinical and epidemiological characteristics of pediatric patients with post-traumatic open globe injury
    (Cukurova Univ, Fac Medicine, 2023) Bicer, Gamze Yildirim; Zor, Kuersad Ramazan
    Purpose: The aim of this study was to determine the epidemiology and clinical features of pediatric traumatic open globe injuries in our region.Materials and Methods: Medical records of patients under the age of 18 who were diagnosed with open globe injury between January 2012 and December 2022 were retrospectively reviewed. Demographic data of the patients such as age, gender, time of injury, area of injury, type of injury, and cause of injury were recorded. Initial and final visual acuity and ocular findings at admission were recorded. Factors associated with final visual acuity were evaluated.Results: The mean age of the patients was 7.62 +/- 4.22 years. The majority of the patients were male (n=28, 66,7%). The right eye was the most injured (n=30, 71.4%). The initial visual acuity of approximately 72.5% (n=29) of the patients was worse than 20/200. And the final visual acuity of 50% of the patients (n=20) was below 20/200. The most common type of injury was penetrating trauma (n=18, 42.9%). The region with the highest trauma was Zone I (n=30, 71.4%). The most traumatic materials were metallic objects (n=13, 31%). The most common accompanying clinical finding was lens damage (n=18, 42.9%). Iris damage, lens damage, hyphema, vitreous hemorrhage, retinal detachment, endophthalmitis, type of injury, material causing the injury, and injury area were significantly associated with final vision.Conclusion: In our region, open globe injuries were mostly observed in boys under 12 years in the pediatric age group. Penetrating and cutting metallic objects seem to be the most important cause of trauma. Parents and all caregivers should be informed of the seriousness of open globe injuries to prevent possible injuries.
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    Optical Coherence Tomography Findings in Bipolar Disorder Patients and the Related Factors
    (Aves, 2023) Kurt, Aydin; Zor, Kuersad Ramazan; Bicer, Gamze Yildirim; Kuecuek, Erkut; Ersan, Etem Erdal
    Background: This study's purpose is to determine the effects of current episode and the mood stabilizers on chorioretinal layer thicknesses of bipolar disorder (BD) patients using spectral-domain optical coherence tomography (SD-OCT). Methods: Sixty-seven patients were diagnosed with BD I and using lithium (Li) or valproic acid (VPA), of whom 20 were manic, 24 were depressive, and 23 were in remission, and 49 healthy individuals were included in the study. Peripapillary retinal nerve fiber layer (RNFL), ganglion cell layer, and macular thicknesses of the participants were measured automatically using SD-OCT, and their choroid layer thicknesses were measured manually using the depth imaging mode of SD-OCT. Statistical analysis of the data was performed using Statistical Package for the Social Sciences version 23.0. Results: The patient group's mean age was 39.78 +/- 11.78, and the control group's mean age was 42.06 +/- 12.10. The mean disease duration was 13.22 +/- 8.23 in the patient group, and 26 patients were using Li. While peripapillary RNFL thicknesses were lower in the patient group (P < .05), other layer measurements were similar between the groups. Moreover, the episodes experienced by BD patients did not affect chorioretinal SD-OCT measurements. The patients on VPA had significantly lower RNFL thicknesses compared to the control and the Li groups, and all chorioretinal measurements were similar between the Li and the control groups. Conclusion: As a result of the study, it was established that neurodegenerative processes play a role in the pathophysiology of BD and the usage of Li is protective against the neurodegeneration of RNFL. Retinal changes measured with SD-OCT can be used for the diagnosis and prognosis of BD and for evaluating responses to mood stabilizers.