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Journal of Lipid Research, Vol 25, 469-473, Copyright © 1984 by Lipid Research, Inc.

ARTICLES

Relationship of high density lipoprotein cholesterol to cholesterol metabolism in the baboon (Papio sp.)

BL Flow and GE Mott

Genetic effects on serum high density lipoprotein (HDL) cholesterol concentration and several parameters of a two-pool model of cholesterol metabolism were investigated in 79 baboons, the progeny of 6 sires. Significant differences (P less than 0.05) were observed among the sire progeny groups for HDL cholesterol (HDL-C), cholesterol production rate, cholesterol mass of pool A, and the rate constants KA and KAB. Rank correlations (rs) revealed that the sire progeny group means for HDL-C are closely correlated with those for the cholesterol mass of pool A (rs = 0.89), KA (rs = -0.78), and KAB (rs = -0.94). These strong correlations suggest that pool A, KA, and KAB are influenced to a large degree by the same genes that regulate HDL-C concentration. The strong inverse relationship (rs = -0.78) between HDL-C and KA suggests that the differences among these sire progeny groups for HDL-C are due chiefly to those metabolic processes which regulate cholesterol excretion from pool A. This conclusion is consistent with reports that HDL-C is a preferred precursor for bile acid synthesis.
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