Chemokine gene polymorphisms association with increased risk of type 2 diabetes mellitus in Tatar ethnic group, Russia

• Published in: Molecular biology reports Vol. 46; no. 1; pp. 887 - 896
• Main Authors: Kochetova, Olga V., Avzaletdinova, Diana S., Morugova, Tatyana V., Mustafina, Olga E.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.02.2019; Springer Nature B.V
• Subjects: Adipose tissue; Animal Anatomy; Animal Biochemistry; Biomedical and Life Sciences; Case-Control Studies; CCL17 protein; CCL20 protein; Chemokines; Chemokines - genetics; Cohort Studies; Diabetes; Diabetes mellitus; Diabetes mellitus (non-insulin dependent); Diabetes Mellitus, Type 2 - genetics; Ethnic Groups - genetics; Female; Gene Frequency - genetics; Genetic Association Studies; Genetic Predisposition to Disease; Glucose tolerance; Histology; Humans; Insulin; Intolerance; Life Sciences; Male; Middle Aged; Minority & ethnic groups; Morphology; Obesity; Original Article; Polymorphism, Single Nucleotide - genetics; Risk Factors; Russia; Single-nucleotide polymorphism; Russia; Type 2 diabetes; Single nucleotide polymorphism; Tatar population; Susceptibility genes; Chemokines
• ISSN: 0301-4851; 1573-4978
• DOI: 10.1007/s11033-018-4544-6

Recent studies have shown that chemokines play an important role in the development of chronic inflammation in adipose tissue, obesity pathogenesis, glucose intolerance and type 2 diabetes. It has also been revealed that some SNPs in chemokine genes are associated with obesity, insulin resistance, type 2 diabetes and diabetes complications in different ethnic groups. The aim of this study was to determine the associations between SNPs in chemokine genes and type 2 diabetes in participants of Tatar ethnic group, living in Bashkortostan. Case–control and cross-sectional study were included in our study design. Five SNPs were genotyped in 440 type 2 diabetes (160 men and 280 women), 58.8 ± 9.2 years old (mean ± SD), BMI 29.3 ± 3.9 kg/m 2 (mean ± SD) patients of Tatar ethnicity, and a control group of 500 Tatars (180 men and 320 women), 55.2 ± 11.6 years old (mean ± SD), BMI 25.9 ± 4.3 kg/m 2 (mean ± SD). The SNPs rs6749704 in CCL20 [odds ratio (OR) = 2.77 (95% CI 1.81–4.25), р  = 0.0001], rs2107538 in CCL5 [odds ratio (OR) = 1.80 (95% CI 1.46–2.22), p  = 0.0001] were significantly associated with type 2 diabetes. Regression analysis revealed that rs1696941 in CCL11 was associated with the onset age and duration of type 2 diabetes as well as with HbA 1c level ( p  = 0.034, p  = 0.036 and p  = 0.0054, respectively). The SNPs rs223828 in CCL17 and rs6749704 in CCL20 were correlated with obesity as estimated by BMI ( p  = 0.0004, p  = 0.029, respectively). Rs223828 in CCL17 revealed the association with postprandial glucose level ( p  = 0.024) and HbA 1c ( p  = 0.008). These data demonstrate that variants of chemokine genes are associated with type 2 diabetes and obesity of Tatar ethnic group inhabiting Bashkortostan Republic. Novel associations of the polymorphic loci in CCL20 (rs6749704) and CCL5 (rs2107538) genes with type 2 diabetes had been identified as a result of the conducted research.