Dietary animal proteins and cholesterol metabolism in rats

The effects on cholesterol metabolism in rats of diets containing various animal proteins or soy protein were studied. The animal proteins tested were casein, whey protein, fish protein, hemoglobin, plasma proteins, ovalbumin, egg-yolk protein, beef protein and chicken-meat protein. The semi-purifie...

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Bibliographic Details
Published inInternational journal for vitamin and nutrition research Vol. 59; no. 1; p. 93
Main Authors Lapré, J A, West, C E, Lovati, M R, Sirtori, C R, Beynen, A C
Format Journal Article
LanguageEnglish
Published Switzerland 1989
Subjects
Animals
Bile Acids and Salts - metabolism
Cholesterol - blood
Cholesterol - metabolism
Cholesterol, Dietary - administration & dosage
Dietary Proteins - classification
Dietary Proteins - pharmacology
Feces - analysis
Liver - metabolism
Male
Rats
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Summary:The effects on cholesterol metabolism in rats of diets containing various animal proteins or soy protein were studied. The animal proteins tested were casein, whey protein, fish protein, hemoglobin, plasma proteins, ovalbumin, egg-yolk protein, beef protein and chicken-meat protein. The semi-purified diets were isonitrogenous and balanced for residual fat and cholesterol in the protein preparations. The nature of the dietary protein had no effect on serum cholesterol concentration. Group mean liver cholesterol concentration was increased and fecal excretion of bile acids was decreased by all animal proteins when compared with soy protein. This study suggests that carefully balancing diets for components other than protein in the protein preparations prevents protein effects on serum cholesterol in rats but not on liver cholesterol and bile acid excretion.
ISSN:0300-9831