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Journal of Lipid Research, Vol 28, 1-9, Copyright © 1987 by Lipid Research, Inc.

ARTICLES

Effects of synthetic glycosides on steroid balance in Macaca fascicularis

MR Malinow, WH Elliott, P McLaughlin and B Upson

The predominantly beta-anomer of diosgenin glucoside (DG) was synthesized and its effects on cholesterol homeostasis were tested in monkeys. Cynomolgus macaques (Macaca fascicularis) were fed, during two 3-week periods, a semipurified diet with 0.1% cholesterol and a similar ration containing 1% DG, respectively. A Chow diet was given for 5 weeks between the experimental periods. Cholesterol and bile acid balance were analyzed during the last week of each semipurified diet. Diosgenin glucoside reduced cholesterolemia from 292 mg/dl to 172 mg/dl, decreased intestinal absorption of exogenous cholesterol from 62.4% to 26.0%, and increased secretion of endogenous cholesterol from - 0.8 to 93.5 mg/day. The fecal excretion of neutral steroids rose from 40.7 to 157.3 mg/day; that of bile acids changed, nonsignificantly, from 23.1 to 16.0 mg/day. The cholesterol balance was -44 mg/day in the control period, and 88 mg/day in the DG-fed animals. No toxic signs were observed. Thus, when long-term studies demonstrate that the glucoside is well tolerated, DG and other synthetic glycosides with similar activities may be of use in the management of hypercholesterolemia and atherosclerosis.
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