Association of rs266729 and rs16861194 polymorphisms of the ADIPOQ gene with the risk of obesity in residents of the Moscow region

Abstract

Rationale: The contribution of the adiponectin gene polymorphisms (ADIPOQ, located at 3q27) in the residents of Nigeria and China to the risk of overweight and its association with the risk of arterial hypertension in the European population have been demonstrated.Aim: To identify associations between rs266729 and rs16861194 polymorphisms of the ADIPOQ gene with overweight and obesity in the Moscow region residents.Materials and methods: Identification of rs266729 and rs16861194 polymorphisms of the ADIPOQ gene was carried out in 222 people (140 women and 82 men, aged 25 to 65 years) living in the Moscow region. Genotyping was performed using allele-specific amplification with real-time detection of the results on the CFX96 Real-Time System amplifier (Bio-Rad, USA) and using TaqMan probes complementary to polymorphic DNA regions. To assess an association between these genetic polymorphisms and overweight/obesity, we performed a case control study, with the cases being subjects with body mass index (BMI) of ≥ 30 kg/m2, and the controls those with BMI of < 30 kg/m2.Results: The mean frequency of the minor allele G rs266729 polymorphism of the ADIPOQ gene in the subjects from the Moscow region was 26.8% and similar in men and women. Comparison of the CC and GG genotypes carriers of the rs266729 polymorphism of the ADIPOQ gene in men showed a statistically significant association of the GG genotype to the BMI value (p = 0.04). There were no statistically significant differences between anthropometric indicators (BMI, body fat mass) in the carriers of different rs16861194 polymorphism genotypes of the ADIPOQ. No association between the studied polymorphisms and blood glucose levels and lipid spectrum could be found.Conclusion: The frequency of the minor allele G of the rs266729 polymorphism of the ADIPOQ gene in the subjects from the Moscow region was similar to their rates in the Russian Federation and European countries. In Moscow residents, the rs266729 polymorphism of the ADIPOQ gene (G allele) contributes to the risk of obesity in homozygous carriers (genotype GG). No association of the rs16861194 polymorphism of the ADIPOQ gene with the BMI was found; therefore, this polymorphism cannot be considered as a genetic marker of the obesity risk.