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Journal of Lipid Research, Vol 18, 223-231, Copyright © 1977 by Lipid Research, Inc.
BI Cohen, RF Raicht and EH Mosbach
Sterol metabolism studies using a combination of isotopic and
chromatographic procedures were carried out in rats fed either a low-
cholesterol stock diet or a stock diet containing 0.1% cholesterol. The
primary bile acids, sodium taurochenodeoxycholate and sodium taurocholate,
were added to the stock diets at a level of 0.5%, as required. Feeding
sodium taurochenodeoxycholate and sodium taurocholate led to a decrease in
acidic steroid synthesis, cholesterol turnover, and cholesterol balance,
compared to controls. Sodium taurochenodeoxycholate feeding did not
influence cholesterol absorption, but rats fed sodium taurocholate showed a
twofold increase in cholesterol absorption as well as an accumulation of
cholesterol in the liver. Rats receiving diets containing sodium
taurochenodeoxycholate or sodium taurocholate plus cholesterol (0.1%)
showed decreased acidic steroid synthesis, cholesterol turnover, and
cholesterol balance, compared to the corresponding controls (Group 2, high
cholesterol diet). Significantly larger amounts of cholesterol were
absorbed in the taurocholate group (34.1 mg/day); these animals increased
their concentrations of cholesterol in liver and plasma. The rats fed
taurocholate plus 0.1% cholesterol differed from those fed
taurochenodeoxycholate plus 0.1% cholesterol in the following respects: a)
increased cholesterol absorption (35%), and b) accumulation of cholesterol
in liver and plasma.
ARTICLES
Sterol metabolism studies in the rat. Effects of primary bile acids (sodium taurochenodeoxycholate and sodium taurocholate) on sterol metabolism
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