Polymorphic gene markers ILRA and IL2: population distinctions in association with diabetes mellitus

AIMS: In order to study type 1 diabetes mellitus associations, we conducted a comparative analysis of allele and genotype frequencydistribution of polymorphic markers rs41295061 and rs11594656 of IL2RA gene, which encodes -chain of interleukin-2 receptor, - and rs2069762, a marker of IL2, gene, encoding interleukin-2. MATERIALS AND METHODS: Experimental group included 451 patients with type 1 diabetes mellitus (DM); control group consistedof 306 healthy subjects (both groups were represented by ethnic Russians). Alleles and polymorphic markers were identified byreal-time amplification method. RESULTS: A comparative analysis of patients with type 1 DM and healthy control group did not show statistically significant differencesfrom the viewpoint of allele and genotype frequency distribution of polymorphic markers rs41295061, rs11594656 and rs2069762. This makes Russian patients considerably different from European ones where markers in question show substantialassociation with type 1 DM. CONCLUSIONS: A comparative analysis of allele and genotype frequency distribution of IL2-RA and IL2 genes polymorphic markersshowed population differences in association of these markers in Russian and European patients

Association of -23 HphI, a polymorphic marker of the INS gene, with type 1 diabetes mellitus

Aim. To analyse frequency distribution of alleles and genotypes of -23 HphI, a polymorphic marker of the INS gene, for evaluation of its associationwith DM1. Materials and methods. The study included two group of subjects: healthy ones and DM1 patients. Genotyping was performed by real time amplification. Results. Comparative analysis demonstrated association between -23 HphI polymorphic marker of INS gene, and type 1 diabetes mellitus. Conclusion. The use of the case-control method revealed association of -23 HphI, a polymorphic marker of the INS gene, with type 1 diabetes mellitus

Association of polymorphisms of the ADIPOQ, ADIPOR1 and ADIPOR2 genes with type 2 diabetes mellitus

The study of hereditary predisposition to multifactorial diseases is essential for diagnosis and selection of the optimal treatment. The study of polymorphisms of candidate genes whose products are involved in the pathogenesis of multifactorial diseases is of great clinical importance. Aim. The aim of this study was to investigate the association of rs2241766 and rs1501299 polymorphisms in the ADIPOQ gene, rs2275737 and rs2275738 polymorphisms in the ADIPOR1 gene and rs11061971 and rs16928751 polymorphisms in the ADIPOR2 gene with the development of type 2 diabetes mellitus (T2DM) in the Russian population. Materials and methods. The study included a group of 500 patients with T2DM diagnosed based on standard diagnostic criteria (T2DM+). The control group (T2DM-) was a random sample of 500 patients with no evidence of the disease and was matched to the T2DM+ group for gender, age and body mass index. The determination of alleles and genotypes was performed using real-time polymerase chain reaction with TaqMan probes. The X2 test and contingency tables were used to compare the distribution of allele and genotype frequencies. A p-value o