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  • Title: Effect of fenofibrate on plasma lipoprotein composition and kinetics in patients with complete hepatic lipase deficiency.
    Author: Ruel IL, Lamarche B, Mauger JF, Badellino KO, Cohn JS, Marcil M, Couture P.
    Journal: Arterioscler Thromb Vasc Biol; 2005 Dec; 25(12):2600-7. PubMed ID: 16224048.
    Abstract:
    OBJECTIVE: The goal of this study was to characterize the effect of microcoated fenofibrate (160 mg/day for 6 months) on plasma lipoprotein composition and kinetics in 2 patients with complete hepatic lipase (HL) deficiency. METHODS AND RESULTS: Fenofibrate treatment normalized the plasma lipoprotein profile of patients with complete HL deficiency, as evidenced by significant reductions in the plasma concentration of cholesterol (-49%) and triglycerides (-82%) and a significant increase in low-density lipoprotein (LDL) size (251.5+/-1.8 versus 263.5+/-0.7 A). The in vivo kinetics of very low-density lipoprotein (VLDL), intermediate-density lipoprotein (IDL), and LDL apolipoprotein (apo)B-100 and plasma apoA-I and apoA-II were studied using a primed-constant infusion of L-[5,5,5-D3]-leucine for 12 hours in the fasted state. Fenofibrate treatment in complete HL-deficient patients substantially decreased plasma concentrations of VLDL, IDL, and LDL apoB-100 attributable to important increases in VLDL (+325%), IDL (+129%), and LDL (+218%) apoB-100 fractional catabolic rates (FCR). IDL apoB-100 FCR nevertheless remained 60% lower after treatment compared with values obtained in controls (n=5). The kinetics of plasma apoA-I and apoA-II as well as the capacity of total plasma and of high-density lipoprotein particles to efflux cellular cholesterol from normal human skin fibroblasts was not altered by fenofibrate. CONCLUSIONS: Fenofibrate therapy exerts a pronounced antiatherogenic effect on triglyceride-rich lipoproteins even in the complete absence of HL.
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