title: Relation of change in apolipoprotein B/apolipoprotein A-I ratio to coronary plaque regression after Pravastatin treatment in patients with coronary artery disease.
abstract: Some investigations have looked into the ability of measurements of apolipoprotein B/apolipoprotein A-I (apoB/apoA-I) ratio to predict cardiovascular events. We hypothesized that a decrease in the apoB/apoA-1 ratio by statin therapy would act on suppression of coronary plaque progression. A 6-month prospective study was conducted of 64 patients with coronary artery disease treated with pravastatin. The plaque volume, assessed by volumetric intravascular ultrasonography, had decreased significantly by 12.6% (p <0.0001 vs baseline). Although a significant decrease of 6.4% and 14.6% was found in the serum level of apoB and the apoB/apoA-1 ratio (p = 0.0001 and p <0.0001, respectively, vs baseline), a significant increase of 14.0% of and 12.0% in the level of apoA-I and apoA-II (both p <0.0001 vs baseline). No significant changes were found in the level of apoC-II or apoE. A stepwise regression analysis revealed that the change in the apoB/apoA-1 ratio was an independent predictor of the change in coronary plaque volume (beta coefficient 0.386; p = 0.0023). In conclusion, our results have indicated that the decrease in the apoB/apoA-I ratio is a simple predictor for coronary atherosclerotic regression: the lower the apoB/apoA-I ratio, the lower the risk of coronary atherosclerosis.
authors.affiliation: Department of Cardiology, Nihon University, Surugadai Hospital, Tokyo, Japan. tanishigem@yahoo.co.jp
authors.forename: Shigemasa
authors.initials: S
authors.lastname: Tani
authors.forename: Ken
authors.initials: K
authors.lastname: Nagao
authors.forename: Takeo
authors.initials: T
authors.lastname: Anazawa
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Kawamata
authors.forename: Shingo
authors.initials: S
authors.lastname: Furuya
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takahashi
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Iida
authors.forename: Michiaki
authors.initials: M
authors.lastname: Matsumoto
authors.forename: Takehiko
authors.initials: T
authors.lastname: Washio
authors.forename: Narimichi
authors.initials: N
authors.lastname: Kumabe
authors.forename: Atsushi
authors.initials: A
authors.lastname: Hirayama
mesh_terms: D000368:Aged; D016632:Apolipoprotein A-I / Q000097:blood*; D001055:Apolipoproteins B / Q000097:blood*; D003324:Coronary Artery Disease / Q000097:blood* / Q000000981:diagnostic imaging / Q000188:drug therapy*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D017035:Pravastatin / Q000627:therapeutic use*; D011446:Prospective Studies; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional
chemical_list: D016632:Apolipoprotein A-I; D001055:Apolipoproteins B; D019161:Hydroxymethylglutaryl-CoA Reductase Inhibitors; D017035:Pravastatin