Aberrant serum polyunsaturated fatty acids profile is relevant with acute coronary syndrome

Abstract

Although a robust relationship between aberrant serum polyunsaturated fatty acids (PUFAs) profile and coronary artery disease (CAD) has been reported, the details concerning the association between aberrant PUFAs profile and clinical feature of CAD are not fully discovered. Therefore, we investigated the relationship between serum PUFAs and clinical profiles in CAD patients. We classified 595 consecutive CAD patients, who underwent coronary angiography into 3 groups according to the clinical profiles of CAD (group A: early phase ACS, n = 96; group B: stable CAD with previous history of ACS, n = 259; group C: stable CAD without previous history of ACS, n = 240) and measured serum n-3 [eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA)] and n-6 [arachidonic acid (AA)] PUFAs. Serum EPA, DHA, and EPA/AA ratio were significantly low in the order of group A < B < C [EPA; 48.1 (34.1–60.3) μg/ml, 61.7 (41.2–94.5) μg/ml, and 74.4 (52.7–104.9) μg/ml, DHA; 113.1 (92.8–135.1) μg/ml, 125.8 (100.4–167.2) μg/ml, and 140.1 (114.7–177.0) μg/ml, EPA/AA ratio; 0.31 (0.22–0.45), 0.39 (0.26–0.62), and 0.44 (0.31–0.69), medians with interquartile range, p < 0.01]. Multiple regression analysis revealed that EPA (p = 0.009) and EPA/AA ratio (p = 0.023), but not DHA and DHA/AA ratio, were negatively associated with clinical profiles of ACS in CAD patients. Significant correlation was not observed between PUFAs profile and severity of coronary stenosis. Low serum EPA and EPA/AA ratio correlates with clinical profiles of ACS in patients with CAD, regardless of the extent and severity of coronary artery stenosis.

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