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COMPARATIVE STUDY
EVALUATION STUDIES
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Lipoprotein-associated phospholipase A₂ is related to plaque stability and is a potential biomarker for acute coronary syndrome.
Yonsei Medical Journal 2014 November
PURPOSE: Plasma lipoprotein-associated phospholipase A₂ (Lp-PLA₂) binds to low-density lipoprotein. The levels of Lp-PLA₂ reflect the plaque burden, and are upregulated in acute coronary syndrome (ACS). We investigated the diagnostic value of Lp-PLA2 levels and found that it might be a potential biomarker for ACS.
MATERIALS AND METHODS: We classified 226 study participants into three groups: patients without significant stenosis (control group), patients with significant stenosis with stable angina (SA group), and patients with ACS (ACS group).
RESULTS: Lp-PLA₂ and high-sensitivity C-reactive protein (hs-CRP) levels were significantly greater in the ACS group than in the SA group (p=0.044 and p=0.029, respectively). Multivariate logistic regression analysis revealed that Lp-PLA₂ levels are significantly associated with ACS (odds ratio=1.047, p=0.013). The addition of Lp-PLA₂ to the ACS model significantly increased the global χ² value over traditional risk factors (28.14 to 35.602, p=0.006). The area under the receiver operating characteristic curve for Lp-PLA₂ was 0.624 (p=0.004). The addition of Lp-PLA₂ level to serum hs-CRP concentration yielded an integrated discrimination improvement of 0.0368 (p=0.0093, standard error: 0.0142) and improved the ability to diagnose ACS.
CONCLUSION: Lp-PLA₂ levels are related to plaque stability and might be a diagnostic biomarker for ACS.
MATERIALS AND METHODS: We classified 226 study participants into three groups: patients without significant stenosis (control group), patients with significant stenosis with stable angina (SA group), and patients with ACS (ACS group).
RESULTS: Lp-PLA₂ and high-sensitivity C-reactive protein (hs-CRP) levels were significantly greater in the ACS group than in the SA group (p=0.044 and p=0.029, respectively). Multivariate logistic regression analysis revealed that Lp-PLA₂ levels are significantly associated with ACS (odds ratio=1.047, p=0.013). The addition of Lp-PLA₂ to the ACS model significantly increased the global χ² value over traditional risk factors (28.14 to 35.602, p=0.006). The area under the receiver operating characteristic curve for Lp-PLA₂ was 0.624 (p=0.004). The addition of Lp-PLA₂ level to serum hs-CRP concentration yielded an integrated discrimination improvement of 0.0368 (p=0.0093, standard error: 0.0142) and improved the ability to diagnose ACS.
CONCLUSION: Lp-PLA₂ levels are related to plaque stability and might be a diagnostic biomarker for ACS.
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