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Citation Information: J Clin Invest. 1969;48(1):87-95. https://doi.org/10.1172/JCI105977.
Abstract
The absorption of endogenous cholesterol, labeled with tracer doses of cholesterol 14C or cholesterol-3H and of near physiological doses of vitamin D3-3H was studied in rats with cannulated intestinal lymphatics. The effects of administering mixed micellar solutions of fatty acid, monoglyceride, and bile salt on the absorption of these labeled sterols was determined. It was observed that the specific activity of free cholesterol and the amounts of vitamin D3 appearing in lymph were significantly increased during the intraduodenal administration of mixed micellar solutions of either linoleic or palmitic acid, in contrast to control rats receiving a micellar solution of taurocholate. These increases were related linearly to the lymph triglyceride level. In addition it was observed that when the linoleic acid solution was administered there was a more marked increase in the ratio of the specific activities of free and esterified cholesterol in lymph than with either the palmitic acid or taurocholate solutions.
Authors
Gilbert R. Thompson, Robert K. Ockner, Kurt J. Isselbacher
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