Aim. To evaluate the retinal nerve fiber layer (RNFL) thickness in patients with obstructive sleep apnea syndrome (OSAS) by optical coherence tomography (OCT). Materials and Method. We studied 43 new diagnosed OSAS patients and 40 healthy volunteers. Patients underwent an overnight sleep study in an effort to diagnose and determine the severity of OSAS. RNFL analyses were performed using Stratus OCT. The average and the four-quadrant RNFL thickness were evaluated. Results. There was no difference between the average and the four-quadrant RNFL thickness in OSAS and control groups. There was no correlation between apnea-hypopnea index and intraocular pressure. Body mass index of patients with moderate and severe OSAS was significantly higher in patients with mild OSAS. Conclusion. Mean RNFL thickness did not differ between the healthy and the OSAS subjects, however, the parameters were more variable, with a larger range in OSAS patients compared to controls.
İmpresyon sitolojisi (IC) selüloz asetat filtre kağıtları kullanılarak, oküler yüzeyin çeşitli bozukluklarının tanısına yardımcı olan basit, noninvaziv bir tekniktir. Bu bozukluklar arasında oküler yüzey skuamöz neoplazisi, kuru göz sendromu, limbal kök hücre eksikliği, spesifik viral enfeksiyonlar, vitamin A eksikliği, alerjik bozukluklar, konjonktival melanozis ve malign melanom yer alır. IC, oküler yüzey hastalığının teşhisine yardımcı olmak, oküler yüzey hastalığının patofizyolojisini daha iyi anlamak ve klinik çalışmalarda sonuç ölçütleri olarak kullanılmak üzere biyobelirteçler sağlamak için giderek daha fazla kullanılmaktadır.
Purpose: The aim of this study was to evaluate the immunoreactivity of matrix metalloproteinases-2 (MMP-2), intercellular adhesion molecule-1 (ICAM-1), and nesfatin-1 in cataract lens epithelial cells (LECs) of patients with diabetes mellitus (DM) and to investigate the relationship of these markers with DM cataract and diabetic retinopathy (DR). Materials and methods: Ninety patients were included in the study. The patients were divided into three groups ( n = 30): Group 1 (control; patients without DM or DR); Group 2 (patients with DM only), and Group 3 (patients with both DM and DR). Lens capsule samples were collected during intraoperative cataract surgery. Samples were immunohistochemically stained for MMP-2, ICAM-1, and nesfatin-1 and their immunoreactivity was evaluated. The number of immunoreactive cells was determined with a microscope at ×400 magnification. Results: Increased MMP-2 and ICAM-1 immunoreactivity was detected in the LECs of patients with DM, and especially in patients with DR ( p < 0.001, p < 0.001, respectively). Nesfatin-1 immunoreactivity was significantly lower in LECs of diabetic patients ( p < 0.001). The mean of MMP-2 immunoreactive cells were 7.47 ± 8.18, 22.80 ± 15.70, and 34.80 ± 20.85 in Groups 1, 2, and 3, respectively. The mean of ICAM-1 immunoreactive cells were 17.10 ± 9.83, 38.50 ± 23.55, and 56.93 ± 20.94 in Groups 1, 2, and 3, respectively. Conclusion: Nesfatin-1, MMP-2, and ICAM-1 and could potentially play important roles in the pathogenesis of cataracts in patients with DM.
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