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  • Title: The effect of cimetidine and ranitidine on serum high density lipoprotein subfractions.
    Author: Ooi TC, Peden NR, Champion MC, Simo EI.
    Journal: Atherosclerosis; 1985 Nov; 57(2-3):159-62. PubMed ID: 3910057.
    Abstract:
    Of the two major subfractions of high density lipoprotein (HDL), HDL2 cholesterol (HDL2-C) and not HDL3 cholesterol (HDL3-C) correlates negatively with coronary heart disease. To study the effect of cimetidine and ranitidine on HDL subfractions, 6 healthy males received cimetidine (600 mg bid) ranitidine (150 mg bid) and placebo (one tab bid) for 1 week each, in random order. Measurements of HDL cholesterol (HDL-C), HDL2-C, HDL3-C were made on day 7 of each week. Comparing cimetidine with placebo, HDL2-C/HDL-C, HDL2-C/total cholesterol and HDL2-C/HDL3-C increased significantly while HDL3-C/HDL-C decreased. There was no difference in HDL-C parameters between ranitidine and placebo. Cimetidine treatment results in redistribution of HDL subfractions in favour of HDL2. The mechanism is not H2-receptor antagonism as ranitidine had no such effect.
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