Increased excretion of bile acids by genetically hyperlipoproteinemic Zucker rat |
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Authors: | MTR Subbiah PW Connelly |
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Institution: | Cardiovascular Research Unit Mayo Clinic and Mayo Foundation Rochester, Minnesota 55901, USA |
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Abstract: | Fecal excretion of neutral sterols and bile acids was measured in age-matched hyperlipoproteinemic Zucker obese rats and their lean litter mates. The bile acid excretion (mg/day ± SEM) in Zucker rats was significantly higher (p<0.01) when compared to lean controls (Zucker obese rats 41.68 ± 2.86; lean controls 29.85 ± 1.50). Neutral sterol excretion in both the groups of rats was similar. Total fecal steroid excretion (mg/day ± SEM) in Zucker rats was significantly higher (p<0.01) than in lean controls (Zucker obese rats 52.33 ± 3.50; lean controls 39.23 ± 2.16. The Zucker rat thus mimics the increased bile acid excretion noted previously in human Type IV hyperlipoproteinemia and could serve as an ideal animal model for studying the interrelationship between bile acid excretion and very low density lipoprotein metabolism. |
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