The common PPARγ2 Pro12Ala polymorphism is associated with an increased risk of coronary artery disease (CAD) in Iranian patients with type 2 diabetes mellitus

Background. Type 2 diabetes (T2DM) is a risk factor for coronary artery disease (CAD) in patients with type 2 diabetes compared with subjects without diabetes. Many studies have been shown that CAD has resulted from the interaction of genetic markers implicated in dyslipidaemia and oxidative stress. The PPARγ gene is considered as a potential candidate gene for the link between diabetes mellitus and CAD in patients with diabetes mellitus. The purpose of the present study was to determine the association of Pro12Ala PPARγ2 polymorphism (rs1801282) with CAD in Iranian patients with T2DM.Methods. We studied 290 unrelated Iranian subjects, including 145 healthy controls and 145 CAD patients with a history of T2DM. Genomic DNA was isolated from peripheral blood, and the PPARγ2 gene mutations were analyzed using the PCR–RFLP technique.Results. Our results revealed a significant difference between the allele frequencies of PPARγ2 Pro12Ala polymorphism between the case and control subjects. However, no significant association was observed between Pro12Ala genotypes and physiologic variables.Conclusion. In summary, it could be concluded that PPARγ2 Pro12Ala polymorphism may be an essential indicator of the increased risk of CAD in diabetic patients among the Iranian population.Trial Registration. This article does not contain any studies with human participants by any of the authors.