title: Association of three SNPs in the PARP-1 gene with Hashimoto's thyroiditis.
abstract: Poly(ADP-ribose) polymerase-1 (PARP-1) has a vital role in the progression of the inflammatory response, and its inhibition confers protection in various models of inflammatory disorders. Therefore, we investigated the effect of promoter and exon variations of the PARP-1 gene on the risk for the inflammatory disease Hashimoto's thyroiditis (HT). This case-control association study was comprised of 141 HT patients and 150 controls from a group of women in a Turkish population. Two polymorphisms in the promoter region of the PARP-1 gene, rs2793378 and rs7527192, were analyzed using the PCR-RFLP method. In addition, single nucleotide polymorphism (SNP) rs1136410, which is located at codon 762, was analyzed using bidirectional sequencing. The combined genotype and haplotype analyses of these polymorphisms were performed using SPSS 18 and Haploview 4.2. The results were statistically analyzed by calculating the odds ratios and 95% confidence interval using Pearson's χ (2)-test and Fisher's exact test (two-sided). Although we had a number of significant results, the associations became nonsignificant following a Bonferroni correction for multiple comparisons. Nonetheless, a protective factor against HT was still observed for the heterozygous genotype (TC) of SNP rs1136410 (P=0.001), even following Bonferroni correction, and according to the rs2793378-rs7527192 combined analysis, the occurrence of the TT/GA combined genotype was significantly higher in the controls (P=0.007). These results prove that the heterozygosity of SNP rs1136410 provides a protective effect against HT disease in a group of women in a Turkish population.
authors.affiliation: Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University , Istanbul, Turkey.
authors.forename: Arzuhan
authors.identifier: 0000-0002-4022-1014
authors.initials: A
authors.lastname: Koc
authors.affiliation: Department of Genetics, Institute for Experimental Medicine Research, Istanbul University, DETAE, Istanbul, Turkey.
authors.forename: Muge
authors.initials: M
authors.lastname: Aydin Sayitoglu
authors.affiliation: Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University , Istanbul, Turkey.
authors.forename: Funda
authors.initials: F
authors.lastname: Karakurt
authors.affiliation: Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University , Istanbul, Turkey.
authors.forename: Bahadir
authors.initials: B
authors.lastname: Batar
authors.affiliation: Division of Endocrinology and Metabolism, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey.
authors.forename: Mutlu
authors.initials: M
authors.lastname: Niyazoglu
authors.affiliation: Division of Endocrinology and Metabolism, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey.
authors.forename: Ozlem
authors.initials: O
authors.lastname: Celik
authors.affiliation: Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University , Istanbul, Turkey.
authors.forename: Ilhan
authors.initials: I
authors.lastname: Onaran
authors.affiliation: Division of Endocrinology and Metabolism, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey.
authors.forename: Ertugrul
authors.initials: E
authors.lastname: Tasan
authors.affiliation: Department of Medical Biology, Cerrahpasa Medical Faculty, Istanbul University , Istanbul, Turkey.
authors.forename: Gonul Kanigur
authors.initials: GK
authors.lastname: Sultuybek