title: Influence of angiotensinogen M253T gene polymorphism and an angiotensin converting enzyme inhibitor on restenosis after percutaneous coronary intervention.
abstract: We studied the relation between renin-angiotensin system (RAS) related gene polymorphisms, such as angiotensin converting enzyme (ACE) insertion/deletion (I/D), angiotensinogen (AGT) M253T and angiotensin II type 1 receptor (AT1R) A1166C, and the effect of quinapril, an ACE inhibitor with high tissue-binding affinity, on preventing restenosis after percutaneous coronary intervention (PCI). A total of 253 patients successfully treated for coronary artery disease were randomly assigned to quinapril or control. Of the 215 patients who completed the follow-up, we determined gene polymorphisms in 204 patients with 241 lesions who provided blood samples for genotype determination. In the control, the ACE D homozygotes showed a smaller minimal lumen diameter (MLD) at follow-up (P=0.063). The other two genotypes of AGT and AT1R did not affect restenosis after PCI. According to quinapril treatment, the AGT T homozygotes significantly showed a beneficial effect of quinapril on MLD (P=0.013) and late lumen loss (P=0.013). The ACE I homozygotes also exhibited beneficial effects of quinapril on larger MLD (P=0.065). The AT1R genotype did not influence the quinapril effect. In conclusion, the AGT T homozygotes might benefit from effects of quinapril on preventing restenosis after PCI.
authors.affiliation: Second Department of Internal Medicine, Hiroshima University Faculty of Medicine, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan. tmamoru@mcai.hiroshima-u.ac.jp
authors.forename: Mamoru
authors.initials: M
authors.lastname: Toyofyuku
authors.forename: Michinori
authors.initials: M
authors.lastname: Imazu
authors.forename: Kotaro
authors.initials: K
authors.lastname: Sumii
authors.forename: Hideya
authors.initials: H
authors.lastname: Yamamoto
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Hayashi
authors.forename: Keiko
authors.initials: K
authors.lastname: Hiyama
authors.forename: Nobuoki
authors.initials: N
authors.lastname: Kohno
mesh_terms: D015906:Angioplasty, Balloon, Coronary; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use*; D000808:Angiotensinogen / Q000235:genetics*; D003327:Coronary Disease / Q000235:genetics* / Q000628:therapy; D023903:Coronary Restenosis / Q000235:genetics* / Q000517:prevention & control; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D007546:Isoquinolines / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D007703:Peptidyl-Dipeptidase A / Q000235:genetics; D011110:Polymorphism, Genetic; D000077583:Quinapril; D044140:Receptor, Angiotensin, Type 1; D011945:Receptors, Angiotensin / Q000235:genetics; D044005:Tetrahydroisoquinolines
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D007546:Isoquinolines; D044140:Receptor, Angiotensin, Type 1; D011945:Receptors, Angiotensin; D044005:Tetrahydroisoquinolines; D000808:Angiotensinogen; D007703:Peptidyl-Dipeptidase A; D000077583:Quinapril