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Öğe Association of IL-4 and IL-1 Ra Gene Polymorphisms with the Risk of Bladder Cancer(2022) Polat, Fikriye; Bingöl, Günsel; Diler, Songül BudakThe aim of this study is to evaluate the association of interleukin-4 (IL-4) gene intron 3 and interleukin-1 receptor antagonist (IL-1Ra) gene intron 2 variable number tandem repeat (VNTR) polymorphisms with bladder cancer (BC) susceptibility in Turkish population. A total of 75 BC patients and 126 healthy controls were included in this case-control study. Genotyping for the interested polymorphisms were analyzed through polymerase chain reaction (PCR). The strength of association between both IL-4 and IL-1Ra gene VNTRs and BC susceptibility was estimated utilizing odds ratio (OR) with corresponding 95% confidence interval (CI). In the study, no statistically significant differences were determined in the allele distributions for either in IL-4 gene intron 3 VNTR (OR= 1.33; CI 0.704-2,41, p=0.390) or in IL-1Ra gene intron 2 VNTR polymorphisms (OR= 0.890; CI 0.569-1.394, p=0.346) between BC patients and control groups. The genotype distributions of IL-4 gene were estimated for RP1/RP2 (OR= 1.55; CI 0.11-7.74, p = 0.590) and RP1/RP1 (OR= 2.08; CI 0.48-9.06, p = 0.320), found no difference between BC and control groups. The genotype distributions of IL-1Ra gene were estimated for 2L (OR= 1.401; CI 0.753-2.610, p = 0.287) and 22 (OR=0.908; CI 0.252-3.276, p = 0.883) and found no difference between BC and control groups. This study suggest that there were no statistically significant differences determined either in genotype or allele distributions between BC patients and control groups for both IL-4 intron 3 VNTR and IL-1Ra intron 2 VNTR polymorphisms in Turkish population and therefore there was no association of these variants with BC risk in this population.Öğe Investigation of TLR2 (-196 to -174del) and TLR9 (T-1486C) Gene Polymorphisms Association with Inflammatory Bowel Diseases(Asian Pacific Organization for Cancer Prevention, 2024) Emele, Roseline Eke; A.Salim, Mohammed; Polat, Fikriye; Diler, Songül BudakBackground: Inflammatory bowel diseases (IBD), Crohn’s disease (CD), and ulcerative colitis (UC) are diseases that result from the combined effects of a predisposing genetic background and several environmental factors, including smoking. Some genes can influence these diseases through genetic inheritance, and their regulation is explained by gene polymorphism. However, Toll-like receptor (TLR) genes have been identified as susceptibility genes for CD and UC. Methods: A case-control study was performed on a Turkish population composed of 105 healthy controls and 79 CD, 77 UC patients genotyped by Allele-specific PCR and PCR–RFLP for TLR9 (T-1486C) and TLR 2 (-196 to -174del) gene. Genotype and allele frequencies of TLR9 (T-1486C) and TLR 2 (-196 to -174del) gene polymorphisms compared to allele frequencies in CD and UC patients. Results: No statistically significant findings were found between the CD, UC patients, and the control group in terms of both genotype distributions and allele frequencies for TLR 9 (T-1486C; rs187084) and TLR 2 (-196 to -174del; rs111200466) gene polymorphisms in a Turkish population (P?> 0.05). Conclusion: No association was found between the TLR2 (rs111200466) and TLR 9 (rs187084) gene polymorphisms among IBD patients and the control groups in the Turkish population. © (2024), This work is licensed under a Creative Commons Attribution-Non Commercial 4.0 International License.Öğe The MNS16A VNTR polymorphism of the TERT gene in bladder cancer(Aves, 2020) Diler, Songul Budak; Polat, Fikriye; Bingol, GunselObjective: Bladder cancer (BC) is a complex disease that has a high morbidity rate. The MNS16A polymorphism in the TERT gene has been indicated to play a role in the presence of various cancer types and multiple tumor populations. In the present study, our goal was to investigate whether the MNS16A (VNTRs) in the TERT gene was associated with bladder cancer. Material and methods: A total of 70 patients with BC and 120 normal controls were included in the study. The MNS16A (VNTRs) in the TERT gene was amplified using polymerase chain reaction (PCR). The PCR products were visualized on 3% high resolution agarose gel and under a UV light. Results: The MNS16A VNTR-302 allele was found to be the most common allele in both, the patient group (64%) and the control group (62%). The second most common allele was the VNTR-243 allele that occurred at a frequency of around 34% in BC patients and 33% in the controls. VNTR-333 (patient group, 1%; control group, 3%) and VNTR-274 (patient group, 2%; control group, 1%) alleles were reported as the least common alleles in this study. Conclusion: When comparing the frequencies of genetic variants between cases and controls, we observed that our findings did not support the hypothesis that the MNS16A VNTR polymorphism of the TERT gene might regulate cancer susceptibility.Öğe The P268S and M863V Polymorphisms of the NOD2/CARD15 Gene in Crohn's Disease and Ulcerative Colitis(Allerton Press Inc, 2019) Diler, Songul Budak; Polat, Fikriye; Yaras, SerkanWe aimed to determine P268S and M863V polymorphisms in NOD2/CARD15 genes associated with an increased risk of developing Crohn's disease (CD) and ulcerative colitis (UC) and to establish correlations between P268S and M863V genotypes in Turkish population. This study included 152 healthy controls and 138 patients (62 CD and 76 UC) with IBD. Our results, the P268S CC genotype was prevalent on patients and controls (45 vs. 66%), followed by genotypes CT (48 vs. 28%) and TT (7 vs. 6%) in CD. The prevalence of genotypes of CC (wild-type), CT (heterozygous mutant) and TT (homozygous mutant) profiles for the P268S polymorphism were 68, 25 and 7% respectively in UC patients, and 66, 28 and 6% respectively in healthy control groups. We were found in wild-type M863V in all subjects and no other mutant band. P268S polymorphism may be associated with CD susceptibility in Turkish population, whereas there is not associated between M863V polymorphisms and patients with IBD in Turkish population.
