RESUMO
The aim of this study was to determine the association of the Gly482Ser polymorphism of the PGC-1 gene with insulin resistance and type 2 diabetes mellitus in subjects from the city of Maracaibo. The study was performed on 64 no-diabetic subjects (36 without insulin resistance and 28 with insulin resistance) and 13 with type 2 diabetes. A clinical and nutritional history was carried out and the evaluation of anthropometric parameters was included. Fasting serum glucose, fasting serum insulin, total cholesterol, HDL-C and LDL-C, were measured. The Gly482Ser polymorphism was detected by PCR-RFLP. It was found that the allelic frequencies for A and G were 0.36 and 0.64, respectively. The population was found in genetic equilibrium of Hardy Weinberg. The genotypes of the polymorphism Gly482Ser were not associated with insulin resistance and type 2 diabetes mellitus (OR = 1.320, p = 0.74; OR = 2, p = 0.47 respectively). Nevertheless, the diabetic subjects with the genotype AA presented values of LDL-C higher (p < 0.05) than the individuals with the genotypes GG and GA. The diabetics with the genotype GA showed significantly higher concentrations of triglycerides (>150 mg/dL) compared with the genotype GG. According to the results, the polymorphism Gly482Ser of the PGC-1 gene would be able to contribute to the cardiovascular risk in type 2 diabetics, while in the insulin resistant individuals, this polymorphism was not associated with cardiovascular risk factors.
