Association of ACE I/D Polymorphism with Risk of Diabetes in Cardiovascular Disease Patients

Abstract

AbstractAngiotensin converting enzyme (ACE), as part of renin angiotensin aldosterone system, is involved in blood pressure regulation and control several physiological functions. Insertion/Deletion (I/D) polymorphism of ACE has pronounced effects on development of metabolic diseases like diabetes, cardiovascular diseases (CVDs) and hypertension. However, association of I/D polymorphism with risk of diabetes in CVD patients is not known. The aim of present study was to check the association of ACE I/D polymorphism with risk of diabetes in subjects with CVD. For this, 531 subjects were sampled and divided into 3 groups; G1-H (healthy controls, n=117), G2-CN (cardiac patients without diabetes, n=271) and G3-CD (cardiac patients with diabetes, n=143). Genotyping of ACE I/D polymorphism was done by polymerase chain reaction. Allelic and genotypic frequencies were in Hardy Weinberg Equilibrium (χ2=0.11, p>0.05) and revealed high prevalence of I allele (55%) among all groups. However, II genotype was more common (37%) in G3-CD group. Level of glucose was also higher in subjects with II genotype than DD genotype (12.6±6.3 mmol/L vs. 9.7±5.1 mmol/L). Logistic regression analysis revealed that ACE II genotype increase the risk of diabetes in CVD patients by ~2 times [OR=1.94, CI: 1.24–3.01, p=0.03]; however, this association did not reach the significance level when adjusted for age and gender. In conclusion, ACE I/D polymorphism influence the risk of diabetes in CVD patients and ACE II increases this risk by ~2 fold.