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Item Immune and inflammatory genes possibly involved in the pathogenesis of severe COVID-19(2021) Beksac, Burcu; Dincer, Selin Akad; Avdullahi, Egzon; Yaman, Derya; Terzi, Yunus Kasim; Babakurban, Seda Turkoglu; Celik, Zerrin Yilmaz; Tasci, Canturk; Sahin, Feride IffetItem Investigation of Toll Like Receptor-7 Gene (TLR-7) Mutations in COVID-19 Patients(2021) Dincer, Selin Akad; Beksac, Burcu; Avdullahi, Egzon; Yaman, Derya; Terzi, Yunus Kasim; Babakurban, Seda Turkoglu; Celik, Zerrin Yilmaz; Tasci, Canturk; Sahin, Feride IffetItem Fractalkine (CX3CL1) and its receptor (CX3CR1) in children with hypertrophic adenoid and chronic otitis media with effusion(2020) Inan, Serhat; Babakurban, Seda Turkoglu; Erbek, Selim Sermed; Terzi, Yunus Kasim; Sahin, Feride Iffet; 0000-0001-7308-9673; 0000-0001-5067-4044; 0000-0003-4825-3499; 0000-0001-5612-9696; 0000-0001-8821-4481; AAC-7232-2020; AAI-8856-2021; AAJ-1407-2021; B-7604-2019; B-4372-2018Background: Adenoid hypertrophy (AH) is one of the possible causes of chronic inflammation in the middle ear. It has been suggested that CX3CL1 and its specific receptor (CX3CR1) could be related with the pathogenesis of some inflammatory diseases. The aim of the present study was to evaluate the role of CX3CL1 and CX3CR1 in the pathogenesis of AH with chronic otitis media with effusion (COME) in children. Materials and methods: Adenoid tissue samples were obtained from 91 pediatric patients and divided into two groups: adenoidectomy only for AH (n: 47) and adenoidectomy in conjunction with ventilation tube insertion for AH + COME (n: 44). Expression levels of CX3CL1 and CX3CR1 genes were compared. Results: Expression levels of CX3CL1 and CX3CR1 in hypertrophic adenoid tissue were not significantly different between the AH + COME and All only groups. Although no significant difference was detected in the expression of CX3CL1 in the adenoid samples, the expression of CX3CR1 was higher in children older than 48 months. Conclusions: When allergy, atopy and chronic adenoiditis does not exist to obstructive adenoid hypertrophy, inflammatory fractalkine chemokine expression levels in adenoid tissue was not observed to be increased in children with COME.Item Evaluation of silent information regulator T (SIRT) 1 and Forkhead Box O (FOXO) transcription factor 1 and 3a genes in glaucoma(2020) Yaman, Derya; Takmaz, Tamer; Yuksel, Nilay; Dincer, Selin Akad; Sahin, Feride Iffet; 0000-0001-7308-9673; 0000-0002-3808-7004; 33200312; AAK-2511-2021; AAC-7232-2020Analysis of the reactive oxygen species (ROS)-detoxifying biomarkers may elucidate the mitochondrial dysfunction in glaucoma pathogenesis. Therefore, we purposed to investigate the effects of ROS-detoxifying molecules including Silent Information Regulator T1 (SIRT1) and Forkhead Box O 1 (FOXO1) and 3a (FOXO3a) transcription factors in patients with glaucoma. Our analyses included 20 eyes from patients with primary open-angle glaucoma (POAG) and 20 eyes from patients with pseudoexfoliation glaucoma (PXG) who were scheduled for trabeculectomy. After extraction of total RNA from trabecular meshwork tissue, we compared the levels of SIRT1, FOXO1and FOXO3a genes in the oxidative pathway with the level of glyceraldehyde-3 phosphate dehydrogenase (GAPDH), the reference gene, using real-time polymerase chain reaction. Relative gene expression was calculated using the threshold cycle (2(-Delta Delta CT)) method. We observed similarly reduced expression levels of SIRT1, FOXO1, and FOXO3a genes versus GAPDH among patient groups (p = 0.40; p = 0.56; p = 0.35, respectively). This is the first study to identify the role of SIRT1 and FOXOs in human TM with glaucoma. Relative expression levels of SIRT1, FOXO1, and FOXO3a genes versus a control gene (GAPDH) were decreased in POAG and PXG groups. Our results show that SIRT1and FOXOs (1-3a) deserve special attention in the pathogenesis of glaucoma.Item Vitamin D receptor gene TaqI single nucleotide polymorphism is not associated with lead levels in maternal and umbilical cord blood(2019) Tohma, Yusuf Aytac; Akad, Selin; Colak, Eser; Kulaksizoglu, Sevsen; Akyol, Mesut; Terzi, Yunus Kasim; Ozcimen, Emel Ebru; Esin, Sertac; Sahin, Feride Iffet; 0000-0001-5612-9696; 0000-0001-7308-9673; 0000-0002-3808-7004; 0000-0001-9418-4733; 0000-0002-8184-7531; 29463156; AAC-8356-2020; B-4372-2018; AAC-7232-2020Purpose: We aimed to investigate the association of vitamin D receptor (VDR) gene TaqI single nucleotide polymorphism (SNPs) with serum lead (Pb) levels in maternal and umbilical cord blood. Materials and methods: Eighty-one patients who lived in Konya, Turkey for the last 3 years and had delivery at Baskent University Konya Hospital in 2016 were included in this study. Venous blood samples were drawn from each volunteer immediately before giving birth to determine the maternal Pb levels and VDR SNPs. Additionally, umbilical cord blood samples were collected from the umbilical vein into tube with EDTA as an anticoagulant immediately after birth to determine Pb levels of the fetus. Results: The median level of Pb in the maternal blood was 29.00 (Interquartile Range (IQR) = 16.35) mu g/L and the median Pb level in the cord blood was 22.50 (IQR = 9.75) mu g/L. Blood Pb level of women living in the urban area was significantly higher than in those living in the rural area (Z = 2.118; p = .034). There was a very strong positive correlation between the Pb levels in the maternal blood and in the umbilical cord blood (rho = 0.825, p < .001, respectively). Regarding VDR SNPs, "TT", "TC", and "CC" VDR TaqI genotypes were observed in 28 (34.6%), 45 (55.5%), and eight samples (9.9%), respectively. Pb levels in maternal and cord blood were higher in women with the "CC" VDR TaqI genotype; however, there was no statistically significant difference (p > .05). Conclusions: Although women with the "CC" VDR TaqI genotype had higher maternal and cord blood Pb levels, this was statistically insignificant and therefore, VDR TaqI SNPs did not significantly affect maternal and umbilical cord blood Pb levels.Item The differences in the expression of fractalkine and its receptor in conditions of tonsillar hypertrophy and chronic tonsillitis(2019) Hetemoglu, Elif Koclu; Babakurban, Seda Turkoglu; Terzi, Yunus Kasim; Sahin, Feride Iffet; Erbek, Selim Sermed; 0000-0001-5612-9696; 0000-0001-7308-9673; 30554983; B-4372-2018; AAC-7232-2020Objective: Fractalkine, member of chemokine family, is involved in many inflammatory processes in the human body. The aim of this study is to compare expression levels of fractalkine ligand and its receptor in chronic tonsillitis and hypertrophic tonsil samples. Methods: The study was conducted at Baskent University Departments of Otorhinolaryngology and Medical Genetics. It is designed as a prospective, non-randomized, controlled clinical study. Total 97 samples, obtained from adenotonsillectomy due to chronic tonsillitis or tonsillar hypertrophy, were participated in the study. Fractalkine and its receptor expression levels were determined and comparison was made between the tissue groups. c.839C > T (T280 M) polymorphism of fractalkine receptor was analyzed, then relationship between polymorphism and the expression level of fractalkine receptor was investigated. Results: Fractalkine receptor expression was significantly higher in the hypertrophic tonsil group than chronic tonsillitis group (p < 0.05). Conclusion: Fractalkine, member of chemokine family, and its receptor may play role in preventing chronic-recurrent tonsillitis. (C) 2019 Elsevier B.V. All rights reserved.