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Circ J. 2013;77(10):2578-85. Epub 2013 Jul 18.

Association between serum levels of n-3 polyunsaturated fatty acids and coronary plaque detected by coronary computed tomography angiography in patients receiving statin therapy.

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1
Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences.

Abstract

BACKGROUND:

Intensive lipid-lowering therapy with statins reduces cardiovascular events, but residual cardiovascular risks remain. Intake of n-3 polyunsaturated fatty acids (PUFAs) has been associated with cardiovascular events. We examined the relationships between serum n-3 PUFAs and coronary atherosclerotic findings on computed tomography angiography (CTA) in patients undergoing statin treatment.

METHODS AND RESULTS:

We enrolled 172 subjects (mean age: 68.2 years; 64% men) prior to statin treatment for 6 months. Serum PUFAs, including eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and arachidonic acid, were measured. When the patients were divided into 2 groups according to the median EPA level (61.3 μg/ml), the low-EPA group showed higher incidences of 3-vessel plaque involvement (62% vs. 43%, P=0.015), noncalcified plaques (NCPs) (74% vs. 52%, P=0.0016), extensive NCPs (≥ 2 segments) (56% vs. 34%, P=0.0036), and high-risk plaques (minimum CT density <39 HU and remodeling index >1.05) (43% vs. 22%, P=0.0034). Multivariate analyses revealed that low EPA levels were an independent factor for these coronary plaque findings. The DHA levels were not independently associated with these findings.

CONCLUSIONS:

Low serum EPA level, but not serum DHA, is associated with the presence and extent of NCPs and high-risk plaques detected by coronary CTA in patients undergoing lipid-lowering therapy with statins. 

PMID:
23863750
[Indexed for MEDLINE]
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