title: Genetic polymorphisms of the renin-angiotensin system and angiographic extent and severity of coronary artery disease: the CORGENE study.
abstract: Genetic polymorphisms of the renin-angiotensin system (RAS) have been associated with coronary artery disease (CAD) but no relation between these polymorphisms and coronary atherosclerosis has yet been systematically evaluated. The CORGENE study is a cross-sectional study involving 463 Caucasians who underwent standardized coronary angiography for established or suspected CAD [156 patients with a previous myocardial infarction (MI), 307 without MI]. Four angiographic scores assessing the extent and severity of the coronary lesions were obtained from a double visual analysis of each angiogram, arbitration being achieved by a quantitative measurement. Three different genotypes were analyzed: the angiotensin I-converting enzyme insertion/deletion (ACE I/D) polymorphism, the Met to Thr change at position 235 of the angiotensinogen gene (AGT M235T) and the A to C transition at position 1166 of the angiotensin II type-1 receptor gene (AT1R A1166C). No significant association was observed between these polymorphisms and the clinical characteristics of MI and non-MI subjects. While most classical risk factors were positively correlated with the angiographic scores, no significant relationship could be established with the three genotypes (r ranging from -0.08 to 0.05). Only one significant correlation was observed: between the presence of the AGT 235T allele and the extent of the coronary lesions (r = -0.19, P = 0.04) in patients with low-risk status. These overall results are not in favor of a role of these RAS genetic polymorphisms in the development of coronary atherosclerosis.
authors.affiliation: Laboratoire de Biologie Moléculaire, Ilôt des Mariniers, Assistance Publique-Hôpitaux de Paris, Hôpital Broussais, France. jeunemaitre-X@hbroussais.fr
authors.forename: X
authors.initials: X
authors.lastname: Jeunemaitre
authors.forename: F
authors.initials: F
authors.lastname: Ledru
authors.forename: S
authors.initials: S
authors.lastname: Battaglia
authors.forename: M T
authors.initials: MT
authors.lastname: Guillanneuf
authors.forename: D
authors.initials: D
authors.lastname: Courbon
authors.forename: C
authors.initials: C
authors.lastname: Dumont
authors.forename: O
authors.initials: O
authors.lastname: Darmon
authors.forename: L
authors.initials: L
authors.lastname: Guize
authors.forename: J L
authors.initials: JL
authors.lastname: Guermonprez
authors.forename: B
authors.initials: B
authors.lastname: Diebold
authors.forename: P
authors.initials: P
authors.lastname: Ducimetière
mesh_terms: D000808:Angiotensinogen / Q000235:genetics*; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging* / Q000235:genetics* / Q000503:physiopathology; D003430:Cross-Sectional Studies; D004251:DNA Transposable Elements; D003920:Diabetes Mellitus / Q000235:genetics; D005190:Family; D005260:Female; D005602:France; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000235:genetics; D007703:Peptidyl-Dipeptidase A / Q000235:genetics*; D011110:Polymorphism, Genetic; D011945:Receptors, Angiotensin / Q000235:genetics*; D012084:Renin-Angiotensin System / Q000235:genetics*; D018570:Risk Assessment; D017384:Sequence Deletion; D044465:White People
chemical_list: D004251:DNA Transposable Elements; D011945:Receptors, Angiotensin; D000808:Angiotensinogen; D007703:Peptidyl-Dipeptidase A