Sex differences in type 2 diabetes genetic susceptibility

Abstract

Introduction. In the last few years gender and sex differences in type 2 diabetes (T2D) predisposition are paid much attention. This gap can be caused by the hormonal and genetic background and require further traits.Aim. The aim of this study was to identify genetic markers of T2D predisposition depending on sex using 17 polymorphic markers of genes involved in various links of T2D pathogenesis.Material and Methods. 536 patients with T2D and 1,476 healthy individuals were examined. Amplification of 17 polymorphic gene loci was performed by polymerase chain reaction. Associations of DNA polymorphisms with T2D were evaluated by logistic regression using the SNPStats program. The degree of association was assessed in the odds ratio (OR) scores. Correction for multiplicity of comparisons and multivariate analysis was used.Results. The genotypes of increased T2D risk for men are CC of CCL20 rs6749704 marker (OR = 3.85, P = 0.0002) in recessive model, D/I of CCR5 rs333 marker (OR = 4.42, P = 0.0208); by GRIA1 marker rs2195450 - CT and TT in the dominant model (OR = 2.42, P = 0.0002), TT - in the recessive model (OR = 2.89, P = 0.0070). The genotypes of increased risk of T2D in women according to the marker TCF7L2 rs7903146 - CT and TT in the dominant model (OR = 1.69, P = 0.0003), TT - in recessive (OR = 1.61, P = 0.0124), according to the marker ADIPOQ rs17366743 - TC (OR = 2.55, P = 0.0168).Conclusion. The established genotypes of increased T2D risk depending on gender make it possible to personalize approaches to primary T2D prevention.