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  • Title: Effects of probucol on plasma lipids, lipoproteins and parameters of high density lipoprotein metabolism.
    Author: Wetterau JR, Combs KA, Albers HW, Lamkin G, Stein EA, Barnhart RL, Chi EM, Jackson RL, Harmony JA.
    Journal: Horm Metab Res; 1992 Jun; 24(6):289-96. PubMed ID: 1634195.
    Abstract:
    Eight patients with primary hypercholesterolemia were treated with probucol for 17 weeks. Plasma total cholesterol, low density lipoprotein (LDL)-cholesterol, and high density lipoprotein (HDL)-cholesterol decreased by 16.6, 15.0 and 25.7%, respectively, in response to probucol treatment. Plasma levels of apolipoprotein B and apolipoprotein A-I also decreased, while apolipoprotein A-II concentrations were unchanged. The decrease in HDL-cholesterol levels was associated with a reduction in HDL particle size. No changes in the plasma lecithin:cholesterol acyltransferase activity or mass occurred in response to probucol treatment. In contrast, a significant 25% increase in plasma cholesteryl ester and triglyceride transfer activity occurred following probucol treatment. There was a positive correlation (R = 0.94) between cholesterol ester and triglyceride transfer. We propose that the increase in lipid transfer activity may in part explain the changes in HDL concentration and size, as well as the previously reported effect probucol has on reducing atherosclerosis in animal models.
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