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    Fas/FasL gene polymorphism in patients with Hashimoto's thyroiditis in Turkish population
    (Springer, 2017) Erdogan, M.; Kulaksizoglu, M.; Ganidagli, S.; Berdeli, A.
    Objective Hashimoto's disease is a polygenic disorder with complex etiopathogenesis. Apoptosis is proposed as one of its mechanisms. The Fas/Fas ligand cascade represents a major pathway initiating apoptosis. This study aims to evaluate the influence of Fas and FasL gene polymorphism in Hashimoto's thyroiditis in Turkish population. Materials and methods A total of 112 patients with Hashimoto's thyroiditis and 112 cases of healthy control people were included in this study. The evaluation of genotype for Fas -670 A/G and FasL 843 C/T gene polymorphism was performed by using PCR-RFLP method. Results The FAS genotype and gene allele frequency distribution did differ between the control group (AA 36.6 %, AG 50.0 %, GG 13.4 %, A 61.6 %, G 38.4 %) and the Hashimoto's thyroiditis patients (AA 21.4 %, AG 50.9 %, GG 27.7 %, A 46.9 %, G 53.1 %) (p < 0.01). The evaluation of FasL genotype and gene allele frequency did not show statistically significant difference between the patient group (CC 27.7 %, CT 45.5 %, TT 26.8 %, C 50.4 %, T 49.6 %) and control group (CC 33.9 %, CT 44.6 %, TT 21,4 %, C 56.3 %, T 43.8 %) ( p > 0.05). Conclusions Gene polymorphism of Fas and G allele frequency may play a role in the regulation of apoptosis in thyroid autoimmune disorders. There is a need for further studies to clarify the genetic role of apoptosis in HT.
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    Genetic variations in interleukin 6 rs1800795 polymorphism and the association with susceptibility to Hashimoto's thyroiditis
    (Elsevier, 2017) Erdogan, M.; Kulaksizoglu, M.; Ganidagli, S.; Berdeli, A.
    Hashimoto's disease is a polygenic disorder with complex etiopathogenesis. The imbalance between pro- and anti-inflammatory cytokines may play a role in the etiology. We aimed to evaluate the relation between 174 promoter region of the interleukin 6 rs1800795 gene polymorphism in patients with Hashimoto's thyroiditis (HT). We studied 110 HT patients and 110 healthy controls. The evaluation of genotype for interleukin 6 rs1800795 gene polymorphism were performed by using PCR-RFLP method. The genotype of IL6 distribution did differ between the control group (CC 17.3%, GC 78.2%, GG 4.5%) and the HT patients (CC 29.1%, GC 46.4%, GG 24.5%) (p < 0.001). The frequency of the polymorphic G allele was similar for the group with HT patients as the control group with 47.7% and 43.6%, respectively (p > 0.05). Our results indicate that interleukin 6 rs1800795 polymorphism may be associated with susceptibility to HT in Turkish Patients. It is necessary to confirm the results and determine the underlying pathogenic mechanisms in further studies. (C) 2016 Elsevier B.V. All rights reserved.