Abstract
BackgroundOxidized-low-density lipoprotein (ox-LDL), as well as high-density lipoprotein (HDL) and its subfractions play important role in the development of coronary artery disease (CAD). MethodsA total of 1417 individuals who received selective coronary angiography (CAG) without lipids-lowering treatments were consecutively enrolled. Patients were divided into CAD (n = 942) and non-CAD group (n = 475). The severity of CAD was assessed by Gensini Scores (GS) system. The correlations of ox-LDL with HDL subfractions were analyzed. ResultsCompared with non-CAD subjects, CAD patients had higher ox-LDL but lower concentrations of HDL cholesterol (p = 0.002) and large HDL subfractions (p = 0.004). And ox-LDL was negatively correlated with large HDL subfractions in patients with severe CAD (p < 0.05). Moreover, ox-LDL was elevated and large HDL subfractions decreased with the increase of the number of stenotic coronary arteries and GS (p < 0.05, respectivelly). ConclusionsThe correlations between ox-LDL and cholesterol level of large HDL particles varied among CAD and non-CAD, and CAD with different severities of atherosclerosis.
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