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  • Title: Gemfibrozil therapy in primary type II hyperlipoproteinemia: effects on lipids, lipoproteins and apolipoproteins.
    Author: Lupien PJ, Brun D, Gagné C, Moorjani S, Bielman P, Julien P.
    Journal: Can J Cardiol; 1991; 7(1):27-33. PubMed ID: 2025787.
    Abstract:
    Gemfibrozil lowers triglycerides, low density lipoprotein (LDL) and very low density lipoprotein (VLDL) cholesterol. It also promotes a significant increase of high density lipoprotein (HDL) cholesterol. It has been established that normalization of apolipoproteins is an important protective factor against atherosclerosis. The present report examines the effectiveness of 12 months of gemfibrozil treatment on plasma lipids and apolipoproteins in types IIa (VLDL 18 +/- 2 mg cholesterol/dL) and IIb (VLDL 58 +/- 7 mg cholesterol/dL) hypercholesterolemic patients. Gemfibrozil lowered plasma triglycerides, VLDL cholesterol and apolipoprotein B (apoB), increased HDL cholesterol and apoAI levels in both groups, and induced a very substantial reduction in LDL cholesterol in type IIa patients only. Even though HDL particles were enriched in cholesterol, indicating improvement in the reverse cholesterol transport and lower risk of atherosclerosis in both groups, it is important to note that production of cholesterol-poor LDL particles and reduction in LDL cholesterol and the LDL/HDL cholesterol ratio were observed only in the normotriglyceride group (type IIa). Due to the initially elevated concentration of plasma triglycerides and VLDL in type IIb patients and the increased catabolism of VLDL to LDL during gemfibrozil therapy, this drug has a more efficient regulating effect on LDL particles in type IIa compared with type IIb hyperlipidemia.
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