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    Investigation of associations between apolipoprotein A5 and C3 gene polymorphisms with plasma triglyceride and lipid levels
    (Assoc Medica Brasileira, 2023) Taskin, Emre; Bagci, Hasan; Turan, Muhammed Kamil
    OBJECTIVE: The aim of this study was to determine frequency and associations between APOA5 c.56C>G, -1131T>C, c.553G>T, and APOC3-482C>T and SstI gene polymorphisms with hypertriglyceridemia. METHODS: Under a case-control study model, 135 hypertriglyceridemic and 178 normotriglyceridemic control participants were recruited. Polymerase chain reaction and restriction fragment length polymorphism methods were utilized for genotyping. Statistical calculations were performed by comparing allele and genotype frequencies between groups. Clinical characteristics were compared between groups and intra-group genotypes. RESULTS:APOC3 gene -482C>T and SstI polymorphic genotypes and allele frequencies were significantly higher in hypertriglyceridemic group (genotype frequencies, p=0.035, p=0.028, respectively). Regression analysis under unadjusted model confirmed that APOC3-482C>T and SstI polymorphisms were significantly contributing to have hypertriglyceridemia (p=0.02, odds ratio [OR]=1.831 (95% confidence interval [CI] 1.095-3.060); p=0.04, OR=1.812 (1.031-3.183), respectively).APOA5 c.56C>G was in complete linkage disequilibrium with APOA5 c.553G>T polymorphism (D'=1). CONCLUSION: For the first time in a population sample from Turkey, among the five polymorphisms of APOA5 and APOC3 genes investigated,APOC3-482C>T and SstI polymorphisms were associated with elevated serum TG levels, while APOA5 c.56C>G, -1131T>C, and c.553G>T polymorphisms were not.
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    Lack of Association Between Interleukin 6 Gene Promoter Polymorphisms and Aneurysmal Subarachnoid Hemorrhage in Turkish Population
    (Journal Neurological Sciences, 2015) Bayri, Yasar; Taskin, Emre; Ulus, Aykan; Bayrakli, Fatih; Altun, Adnan; Bagci, Hasan
    Background: The IL6 gene is related to several disease states. Its relation to aneurysm formation and aneurysmal SAH has been studied in the literature, but the reported results have not resulted in definite positive or negative data. In this study we aimed to examine IL6 gene polymorphisms in a Turkish population and further our understanding of the relationship. Results: We included 120 intracranial aneurysm SAH cases and 120 healthy controls to examine whether there was a genotype difference between these groups in the -174 G > C and -572 G > C promoter polymorphisms located in the IL6 gene. The differences between groups were studied using a chi-squared test. There was no statistical difference between aneurysmal SAH patients and controls for IL6 promoter 174G > C and 572G > C polymorphisms. Conclusions: IL6 promoter SNPs did not show a correlation with intracranial aneurysm formation and subarachnoid aneurysmal rupture in a Turkish population, but genetic differences between ethnic populations may give different results.