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.

There are many genetic loci associated with type 2 diabetes mellitus (T2DM). The genetic factors involved in the development of the T2DM can depend on the nature of genetic variation within and across different ethnic groups. Aims — the aim of this study was to investigate the gene-gene interactions and to determine the role of the KCNJ11 (Glu23Lys), ADIPOQ (G276T), omentin (Val109Asp), leptin (G2548A), TCF7L2 (IVS3C/T), PPARg (Pro12Ala) genes in the development of type 2 diabetes mellitus (T2DM) in the Kyrgyz population using MDR analysis. Material and methods. We examined 114 patients (53 females and 61 males; mean age, 54±7.4) with T2DM and 109 apparently healthy controls (48 females and 61 males; mean age, 50±8.4). Polymorphisms of the KCNJ11 (Glu23Lys), ADIPOQ (G276T), omentin (Val109Asp), leptin (G2548A), TCF7L2 (IVS3C/T), PPARg (Pro12Ala) genes were defined by PCR-RFLP assay. Results. Among the six genes (KCNJ11, ADIPOQ, omentin, leptin, TCF7L2, PPARg) included in this study, the most significant contribution to the development of T2DM in the Kyrgyz population was detected for the ADIPOQ (2.17%) and KCNJ11 genes (2.01%). The heterozygous genotype G276T (OR=1.79 CI 95% 1.05—3.05; p=0.036) and the 276T allele (OR=1.68 CI 95% 1.09—2.60; p=0.025) of the ADIPOQ gene were associated with a high risk of developing T2DM in the Kyrgyz population. The 23Lys allele of the KCNJ11 gene was significantly associated with T2DM in the Kyrgyz population (OR=1.62 CI 95% 1.10—2.38; p=0.019). The allele and genotype frequencies of the omentin (Val109Asp), leptin (G2548A), TCF7L2 (IVS3C/T), PPARg (Pro12Ala) genes did not differ between the studied groups (p>0.05). Conclusions. In Kyrgyz population, the polymorphic loci Glu23Lys of the KCNJ11 gene, the 276T allele and genotype G276T of ADIPOQ are associated with T2DM. The omentin (Val109Asp), leptin (G2548A), TCF7L2 (IVS3C/T), and PPARg (Pro12Ala) genes alone do not have such a significant impact on the development of type 2 diabetes; they contribute to the phenotypic development of T2DM mainly due to gene-gene interactions.