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Clinical Trial
Journal Article
Higher lipoprotein-associated phospholipase A2 levels are associated with coronary atherosclerosis documented by coronary angiography.
Annals of Clinical Biochemistry 2012 November
BACKGROUND: Lipoprotein-associated phospholipase A2 (Lp-PLA2) has been proposed as an inflammatory marker of cardiovascular disease. The present study investigates associations between Lp-PLA2 and other important biomarkers in Japanese patients with coronary artery disease.
METHODS: We measured Lp-PLA2 levels in 141 consecutive patients (age 62.6 ± 3.8 years; men 69.2%) with angiographic evidence of coronary artery disease (acute coronary syndrome [ACS]; n = 38), stable angina pectoris (SAP; n = 72) or with angiographically normal coronary arteries (NCA; n = 31).
RESULTS: Levels of Lp-PLA2 significantly correlated with low-density lipoprotein-cholesterol (r = 0.302), homocysteine (r = 0.528) and paraoxonase (r = 0.401) in all patients (all P < 0.01). Levels of Lp-PLA2 were significantly higher in patients with coronary atherosclerosis (ACS and SAP) than with NCA (P < 0.05). Levels of highly sensitive C-reactive protein were significantly higher in patients with ACS than with SAP and NCA (both P < 0.05). Multivariate logistic regression analyses revealed that higher Lp-PLA2 levels were independently associated with coronary atherosclerosis (odds ratio: 1.058; 95% confidence interval: 1.012-1.121; P = 0.001).
CONCLUSIONS: Higher Lp-PLA2 levels are associated with coronary atherosclerosis independently of traditional coronary risk factors. Thus, Lp-PLA2 is a novel biomarker of coronary atherosclerosis in Japanese patients.
METHODS: We measured Lp-PLA2 levels in 141 consecutive patients (age 62.6 ± 3.8 years; men 69.2%) with angiographic evidence of coronary artery disease (acute coronary syndrome [ACS]; n = 38), stable angina pectoris (SAP; n = 72) or with angiographically normal coronary arteries (NCA; n = 31).
RESULTS: Levels of Lp-PLA2 significantly correlated with low-density lipoprotein-cholesterol (r = 0.302), homocysteine (r = 0.528) and paraoxonase (r = 0.401) in all patients (all P < 0.01). Levels of Lp-PLA2 were significantly higher in patients with coronary atherosclerosis (ACS and SAP) than with NCA (P < 0.05). Levels of highly sensitive C-reactive protein were significantly higher in patients with ACS than with SAP and NCA (both P < 0.05). Multivariate logistic regression analyses revealed that higher Lp-PLA2 levels were independently associated with coronary atherosclerosis (odds ratio: 1.058; 95% confidence interval: 1.012-1.121; P = 0.001).
CONCLUSIONS: Higher Lp-PLA2 levels are associated with coronary atherosclerosis independently of traditional coronary risk factors. Thus, Lp-PLA2 is a novel biomarker of coronary atherosclerosis in Japanese patients.
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