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  • Title: Physical exercise modifies the effect of high cholesterol-sucrose feeding in the rat.
    Author: Simko V, Kelley RE.
    Journal: Eur J Appl Physiol Occup Physiol; 1979 Feb 15; 40(3):145-53. PubMed ID: 421678.
    Abstract:
    1. Adult male rats were fed a basic chow (less than 0.01% cholesterol) and the same diet modified to contain 0.2% cholesterol and 20% sucrose. 2. Cholesterol-sucrose diet increased the erythrocyte cholesterol and the liver cholesterol. This diet decreased the epididymal fat weight and the biliary cholesterol and it improved the micellar solubility of cholesterol in the bile. 3. Swimming daily for 1 h for 94 days modified the effect of cholesterol-sucrose feeding: it induced plasma lecithin-cholesterol acyltransferase (LCAT), it decreased erythrocyte cholesterol, plasma total and unesterified cholesterol, and adipose tissue phospholipids to a level even beyond that of the animals on the basic chow. These changes in lipid levels induced by exercise suggest an important role of LCAT in cholesterol transport. 4. Exercise did not effect micellar solubility of cholesterol in the bile probably because cholesterol biosynthesis was already suppressed by dietary cholesterol. 5. Exercise promotes cholesterol esterification and transport from the peripheral tissues to the liver not only on a low cholesterol diet (our previous reports) but also when feeding a diet high in cholesterol and sucrose.
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