Abstract
Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a serine protease which plays an important role in the regulation of LDL receptor (LDLR) expression and apolipoprotein B (apoB) lipoprotein cholesterol metabolism. It is well known that hepatic PCSK9 expression, its activity and secretion influence cholesterol homeostasis. An upregulation of PCSK9 causes an increase of LDLR degradation, which results in decrease of apoB lipoprotein uptake, and a consequent increase in plasma lipoprotein concentration, including LDL. Therefore, PCSK9 has become a new target for lipid lowering therapy. The aim of this review is to consider current data on metabolic and dietary regulation of PCSK9 and its effect on cholesterol and apoB lipoproteins metabolism and risk of cardiovascular disease.
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