Association of human Ghrelin gene polymorphism with gestational impaired glucose tolerance

Abstract

Objective To investigate whether the polymorphism of the Ghrelin gene is associated with gestational impaired glucose tolerance and its distribution in Chinese Han population. Methods We assessed common genetic variation of the Ghrelin ten single nucleotide polymorphisms(SNP)in 94 patients with gestational impaired glucose tolerance and 102 control by using the restriction fragment length polymorphism method.. In addition, haplotype assays were conducted. Results The genotype distributions of these ten common polymorphisms in gestational impaired glucose tolerance patients were not significantly different from those of normal controls in statistics(x2=2.790,0.224,0.072,2.887,0.004,1.073,0.653,0.671;x2 =2.553,0.391,0. 108,4. 812,0. 005,3. 278,1. 308,3. 364, P ＞ 0. 05), but three haplotypes(SNP-1500G - SNP-1062G -SNP-994C - SNP-604G;SNP + 408C - SNP + 2488G - SNP + 3056C;SNP + 408A - SNP + 2488G - SNP +3056C)of the Ghrelin gene were found to be significantly associated with it in statistics(x2 =4.336,4.308,5.327, P ＜0. 05). Conclusion The above mentioned ten common polymorphisms in the Ghrelin gene were not found to be significantly associated with susceptibility to gestational impaired glucose tolerance. However,one(SNP + 408C - SNP + 2488G - SNP + 3056C)of the Ghrelin haplotypes showed a protective role in gestational impaired glucose tolerance, and two(SNP-1500G- SNP-1062G - SNp-994C - SNP-604G ;SNP + 408A -SNP + 2488G - SNP + 3056C)showed higher susceptibility. Key words: Gestational impaired glucose tolerance; Ghrelin gene; Polymorphism; RFLP