期刊论文详细信息
Platelet-activating factor acetylhydrolase activity indicates angiographic coronary artery disease independently of systemic inflammation and other risk factors - The Ludwigshafen risk and cardiovascular health study
Article
关键词: LOW-DENSITY-LIPOPROTEIN;    C-REACTIVE PROTEIN;    MIDDLE-AGED MEN;    PHOSPHOLIPASE A(2);    REDUCTASE INHIBITORS;    PAF;    PREVALENCE;    PLASMA;    HEART;    ATHEROSCLEROSIS;   
DOI  :  10.1161/01.CIR.0000156457.35971.C8
来源: SCIE
【 摘 要 】

Background - Platelet-activating factor acetylhydrolase (PAF-AH), also denoted as lipoprotein-associated phospholipase A2, is a lipoprotein-bound enzyme that is possibly involved in inflammation and atherosclerosis. This study investigates the relationship of PAF-AH activity to angiographic coronary artery disease (CAD), the use of cardiovascular drugs, and other established risk factors. Methods and Results - PAF-AH activity, lipoproteins, sensitive C-reactive protein (sCRP), fibrinogen, serum amyloid A, and white blood cell count were determined in 2454 subjects with angiographically confirmed CAD and in 694 control subjects. PAF-AH activity was highly correlated with LDL cholesterol (r = 0.517), apolipoprotein B (r = 0.644), and non-HDL cholesterol (r = 0.648) but not with sCRP or fibrinogen. PAF-AH activity was lower in women than in men and was affected by the intake of lipid-lowering drugs (-12%; P < 0.001), aspirin (-6%; P < 0.001), beta-blockers (-6%; P < 0.001), and digitalis (+7%; P < 0.001). Unlike sCRP, fibrinogen, and serum amyloid A, PAF-AH activity was not elevated in unstable angina, non-ST-elevation myocardial infarction, or ST-elevation myocardial infarction. When nonusers of lipid-lowering drugs were examined, PAF-AH activity was associated with the severity of CAD and the number of coronary vessels with significant stenoses. In individuals not taking lipid-lowering drugs and after adjustment for use of aspirin, beta-blocker, and digitalis, the odds ratio for CAD associated with increasing PAF-AH activity was 1.39 (95% CI 1.26 to 1.54, P < 0.001), a finding that was robust against further adjustments. Conclusions - PAF-AH activity is not an indicator of the systemic inflammation that accompanies acute coronary syndromes. PAF-AH activity is affected by a number of cardiovascular drugs; however, after such medication use was accounted for, PAF-AH activity was associated with angiographic CAD, complementary to sCRP and independently of established risk factors such as LDL cholesterol.

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