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Cholesterol-lowering effect of soyabean lecithin in normolipidaemic rats by stimulation of biliary lipid secretion

Published online by Cambridge University Press:  09 March 2007

Elisabeth Polichetti ,
Nicolas Diaconescu ,
Paulette Lechene De La Porte ,
Lina Malli ,
Henri Portugal ,
Anne-Marie Pauli ,
Huguette Lafond ,
Beatriz Tuchweber ,
Ibrahim Yousef  and
Francoise Chanussot
Elisabeth Polichetti
Affiliation:
Inserm U130, France
Nicolas Diaconescu
Affiliation:
Inserm U130, France
Paulette Lechene De La Porte
Affiliation:
Inserm U130, France
Lina Malli
Affiliation:
Department of Nutrition, Canada
Henri Portugal
Affiliation:
Laboratoire Central, Hôpital Sainte Marguerite, 13009 Marseille, France
Anne-Marie Pauli
Affiliation:
Laboratoire Central, Hôpital Sainte Marguerite, 13009 Marseille, France
Huguette Lafond
Affiliation:
Inserm U130, France
Beatriz Tuchweber
Affiliation:
Department of Pharmacology, University of Montreal, Montreal, H3C 357, Canada
Ibrahim Yousef
Affiliation:
Department of Nutrition, Canada
Francoise Chanussot
Affiliation:
Inserm U130, France
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Abstract

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The purpose of the present study was to assess the role of the liver in the plasma-cholesterol-lowering effect of soyabean lecithin. Normolipidaemic rats were fed on lecithin-enriched or control diets with the same amount of protein. The lecithin diets contained 200 g/kg high-fat commercial semi-purified soyabean lecithin (230 g/kg total lipids as soyabean phosphatidylcholine) or 200 g/kg high-fat purified soyabean lecithin (930 g/kg total lipids as soyabean phosphatidylcholine). The control diets were a low-fat diet (40 g fat/kg) and a high-fat triacylglycerol-rich diet (200 g fat/kg). The high-fat diets were isoenergetic. The cholesterol-lowering effect of the lecithin-enriched diets was associated with significantly lower levels of plasma total- and HDL-cholesterol and significantly higher levels of bile phosphatidylcholine (PC), bile salts and cholesterol. These findings suggest that the liver plays a major role in the reduction of plasma cholesterol, the increased biliary lipid being provided by both HDL and the hepatic microsomal pools of PC and cholesterol.

Keywords

Soyahean lecithinCholesterolBileLiver
Type
Cholesterol metabolism in rats
Information
British Journal of Nutrition , Volume 75 , Issue 3 , March 1996 , pp. 471 - 481
Copyright
Copyright © The Nutrition Society 1996

References

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