A polymorphic marker Val109Asp in the omentin gene are associated with abdominal obesity in the Kyrgyz population

Abstract

Aim — in this study, we investigated whether polymorphisms Val109Asp in the omentin gene are associated with abdominal obesity in the Kyrgyz population.Material and methods. We genotyped 297 nonrelated adults Kyrgyz individuals. 127 patients (male — 46, female — 81, average age — 53±7,0) with abdominal obesity (elevated waist circumferences ≥102 cm for male subjects and ≥ 88 cm for female) and 170 non-obese control subjects (male — 107, female — 63, average age 51±9). Val109Asp polymorphisms analysis in the omentin gene were performed by PCR-RFLP method.Results. There were significant differences in genotype distributions of rs2274907 between the obese and control cohorts (p=0.01). Frequencies of Asp109Asp, Val109Asp and Val109Val genotypes among patients with abdominal obesity were 48, 40 and 12%, respectively, that differed from those among controls (Asp109Asp — 53%, Val109Aspl — 43% and Val109Val — 4%); there was significant difference in genotype frequencies between two groups (χ²=6,29; p=0,043). Homozygous genotype Val109Val was more frequent in the obese than non-obese group. The genotype Val109Val of omentin gene is associated with a high risk of developing abdominal obesity in the Kyrgyz population (OR=3,12; 95% CI 1,23—7,90). Homozygous genotype Asp109Asp, reduces the risk of developing abdominal obesity (OR=0,82; 95% CI 0,53—1,30). The allelic variants of the polymorphisms Val109Asp in the omentin gene were not found to be associated with abdominal obesity.Conclusion. There is significant association between Val109Asp polymorphism in omentin gene and abdominal obesity in the Kyrgyz Population. An increased risk of abdominal obesity associated with homozygous genotype — Val109Val in omentin gene.