Study of angiotensin-converting enzyme insertion/deletion polymorphism, enzyme activity and oxidized low density lipoprotein in Western Iranians with atherosclerosis: a case-control study

• Published in: BMC cardiovascular disorders Vol. 19; no. 1; p. 184
• Main Authors: Nouryazdan, Negar, Adibhesami, Glavizh, Birjandi, Mehdi, Heydari, Rouhollah, Yalameha, Banafsheh, Shahsavari, Gholamreza
• Format: Journal Article
• Language: English
• Published: England BioMed Central Ltd 01.08.2019; BioMed Central; BMC
• Subjects: Aged; Angiotensin converting enzyme inhibitors; Angiotensins; Atherosclerosis; Biomarkers - blood; Cardiovascular agents; Case-Control Studies; Chromatography; Coronary artery disease (CAD); Coronary Artery Disease - blood; Coronary Artery Disease - diagnostic imaging; Coronary Artery Disease - enzymology; Coronary Artery Disease - genetics; Coronary heart disease; Diagnostic imaging; DNA; Enzymes; Female; Gene Frequency; Genes; Genetic aspects; Genetic Association Studies; Genetic polymorphisms; Genetic Predisposition to Disease; Genetic research; High performance liquid chromatography; Humans; Iran; Lipoproteins, LDL - blood; Liquid chromatography; Low density lipoproteins; Male; Medical care quality; Medical research; Middle Aged; Peptidyl-Dipeptidase A - genetics; Peptidyl-Dipeptidase A - metabolism; Phenotype; Plaque, Atherosclerotic; Polymerase chain reaction; Polymorphism; Polymorphism, Genetic; Renin-angiotensin system; Risk Factors; Sex Factors; Women; Iran; Coronary artery disease (CAD); Renin-angiotensin system; Atherosclerosis; Polymorphism
• ISSN: 1471-2261; 1471-2261
• DOI: 10.1186/s12872-019-1158-4

It has been indicated that Angiotensin-Converting Enzyme Insertion/Deletion (ACE I/D) polymorphism (rs4646994) could be regarded as a genetic factor that raises the risk of CAD through its impact on the activity of Angiotensin-Converting Enzyme (ACE) and angiotensin II level. The present study seeks to examine the relationship between ACE I/D polymorphism with the risk of atherosclerosis. Moreover, its potential effects on ACE activity and oxLDL level are investigated. In this study, 145 healthy individuals and 154 patients (143 males and 156 females) were selected among the subjects referred to Shahid Madani Hospital. Atherosclerosis was determined in all subjects with gold standard angiography. Blood samples were collected, used to isolate white blood cells (WBC) and serum separation. The DNA was extracted and the polymorphism was determined by polymerase chain reaction (PCR). The enzyme activity was measured using high-performance liquid chromatography (HPLC). This study indicated that patients with atherosclerosis had higher levels of oxidized Low-Density Lipoprotein (oxLDL) and ACE activity (P < 0.05) as compared to controls. Although we found a significant association between ACE I/D polymorphism genotype and the allele with atherosclerosis in the male group, there were no association when the entire patient group was compared to the entire control group. Our study revealed the ACE I/D polymorphism of the ACE gene may not be an independent risk factor in the development of atherosclerosis and evaluation of ACE activity level is more important in evaluating the risk of disease. The researchers found no relation between ACE I/D polymorphism and atherosclerosis and also between types of genotype, ACE activity, and OxLDL level.