Abstract:
PURPOSE:Endothelin1 (EDN1) is well established marker of inflammation. The functions of EDN1 are mediated mainly by endothelin receptors type A (EDNRA). The etiopathogenesis of Hashimoto's thyroiditis (HT) remains still elusive although the role of chronic inflammation and subsequent endothelial dysfunction has been established. This study examined firstly the possible association of EDN1 (G5665Tand T-1370G) and EDNRA (C+70G and G-231A) single nucleotide polymorphisms (SNPs) with the occurrence of HT, and evaluates the relationship between genotypes and clinical/laboratory manifestation of HT. MATERIALS AND METHODS:We analyzed genotype and allele distributions of above mentioned polymorphisms in 163 patients with HT and 181 healthy controls by real-time PCR combined with melting curve analysis. RESULTS:No significant associations between HT and variant alleles of EDN1 5665 and -1370, as well as EDNRA +70 and -231 SNPs were found. Haplotype analysis demonstrated that there was a strong (D'=0.76, r(2)=0.487) and weak (D'=0.403, r(2)=0.086) linkage disequilibrium (LD) between EDN1 -1370 and 5665, and between EDNRA -231 and +70 SNPs, respectively. However, haplotype frequencies in patients were similar to those in controls. In addition, it was observed that the EDNRA +70 G allele had protective effect against early (at age before 40 years) disease onset of HT (OR: 0.51, 95% CI=0.32-0.79, p=0.003). CONCLUSION:Although no significant associations between susceptibility to HT with EDN1 5665 and -1370, as well as with EDNRA+70 and -231 SNPs were found, EDNRA +70 polymorphism was related with decreased risk for early onset HT.
journal_name
Int Immunopharmacoljournal_title
International immunopharmacologyauthors
Aydin AF,Vural P,Oruç ÇU,Doğru-Abbasoğlu S,Özderya A,Karadağ B,Uysal Mdoi
10.1016/j.intimp.2014.04.023subject
Has Abstractpub_date
2014-07-01 00:00:00pages
181-5issue
1eissn
1567-5769issn
1878-1705pii
S1567-5769(14)00159-3journal_volume
21pub_type
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