| Elevated plasma lipoprotein-associated phospholipase A2 activity is associated with plaque rupture in patients with coronary artery disease. | |
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MedLine Citation:
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PMID: 21933589 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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BACKGROUND: Lipoprotein-associated phospholipase A(2) (Lp-PLA(2)) has recently been shown to be positively related to coronary events in patients with coronary artery disease (CAD). However, direct evidence about the relationship between circulation Lp-PLA(2) activity and vulnerable plaque in patients with CAD remains lacking. METHODS: Plasma Lp-PLA(2) activity was determined in 146 consecutive patients with CAD who underwent clinically-indicated coronary angiography and preinterventional intravascular ultrasound (IVUS). RESULTS: Eighty-three patients were included in the final analysis after the initial screening. Sixty (72.3%) were acute coronary syndrome (ACS) patients and 23 (27.7%) were stable angina pectoris (SAP) patients. Plaque rupture occurred in 39 (47.0%) patients, and 34 (87.2%) were from ACS patients and 5 (12.8%) from SAP patients. There were no significant differences in clinical and angiographic characteristics between patients with plaque rupture and those without plaque rupture, except for smoking, high-sensitive C-reactive protein (hs-CRP) level and Lp-PLA(2) activity (all P < 0.05). IVUS measurement uncovered that patients with plaque rupture had more frequent positive remodeling (74.4% vs. 43.2%, P = 0.004), soft plaques (64.1% vs. 36.4%, P = 0.012) and higher remodeling index (1.13 ± 0.16 vs. 0.99 ± 0.11, P = 0.041) as compared with those without plaque rupture. Multivariate Logistic regression analysis showed that plasma Lp-PLA(2) activity was independently associated with plaque rupture after adjusting for smoking, positive remodeling and soft plaque (Model 1: odds ratio (OR) 1.13, 95% confidence interval (CI): 1.06 - 1.20) or adjusting for smoking, hs-CRP level, positive remodeling and soft plaque (Model 2: OR 1.11, 95%CI: 1.04 - 1.19). CONCLUSIONS: Plasma Lp-PLA(2) activity is associated with plaque rupture in patients with CAD, independently of traditional CAD risk factors, hs-CRP level and IVUS parameters. Lp-PLA(2) may be a risk marker for vulnerable plaques. |
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Authors:
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Chuan-Fen Liu; Li Qin; Jing-Yi Ren; Hong Chen; Wei-Min Wang; Jian Liu; Jun-Xian Song; Li-Jun Li |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Chinese medical journal Volume: 124 ISSN: 0366-6999 ISO Abbreviation: Chin. Med. J. Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-09-21 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7513795 Medline TA: Chin Med J (Engl) Country: China |
Other Details:
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Languages: eng Pagination: 2469-73 Citation Subset: IM |
Affiliation:
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Department of Cardiology, Peking University People's Hospital, Beijing 100044, China. |
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