Abstract:
BACKGROUND:Plasma PCSK9 levels was positively associated with low-density lipoprotein (LDL) cholesterol (LDL-C) and atherosclerosis, while PCSK9 may also be implicated in the metabolism of lipoprotein subfractions. The study was to examine the association of plasma PCSK9 with lipoprotein subfractions in patients with stable coronary artery disease (CAD). METHODS:A total of 281 consecutive, stable CAD patients who were not treated with lipid-lowering drugs were enrolled. The baseline clinical characteristics were collected, the plasma PCSK9 levels were determined using ELISA, and the LDL and high-density lipoprotein (HDL) subfractions were analyzed by Lipoprint System. The association of plasma PCSK9 levels with the lipoprotein subfractions was investigated. RESULTS:In the overall population, plasma PCSK9 levels were positively associated with the concentration of LDL-C, intermediate LDL-C, small LDL-C, and LDL score, while negatively correlated with mean LDL particle size. PCSK9 levels were positively associated with the concentration of HDL-C, intermediate HDL-C and small HDL-C. Multivariable regression analysis revealed that the plasma PCSK9 levels were significantly and independently associated with the concentration of intermediate LDL-C (β=0.152, p=0.013), small LDL-C (β=0.179, p=0.004), LDL score (β=0.121, p=0.043), and mean LDL particle size (β=-0.130, p=0.035), while not HDL subfractions. Interestingly, when investigated in male and female patients separately, these relationships were only found in male but not in female, and the small HDL-C exhibited an association with PCSK9 levels in male patients (β=0.149, p=0.045). CONCLUSIONS:PCSK9 levels were independently associated with the changes of lipoprotein subfractions, suggesting a potential interaction between PCSK9 and lipoprotein subfractions in CAD.
journal_name
Lipids Health Disjournal_title
Lipids in health and diseaseauthors
Xu RX,Li S,Zhang Y,Li XL,Guo YL,Zhu CG,Li JJdoi
10.1186/1476-511X-13-188subject
Has Abstractpub_date
2014-12-11 00:00:00pages
188issn
1476-511Xpii
1476-511X-13-188journal_volume
13pub_type
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