Antihypercholesterolemic property of naringin alters plasma and tissue lipids, cholesterol-regulating enzymes, fecal sterol and tissue morphology in rabbits

Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition
Seon Min JeonMyung-Sook Choi

Abstract

Hyperlipidemia is a major risk factor for cardiovascular diseases. This study was designed to confirm the hypocholesterolemic role of naringin. Male rabbits were fed 0.5% high-cholesterol diet or high-cholesterol diet supplemented with either 0.05% naringin or 0.03% lovastatin for 8 weeks. The naringin and lovastatin supplements significantly lowered plasma total- and LDL-cholesterol and hepatic lipids levels, while significantly increasing HDL-C/total-C ratio compared to the control group. Hepatic 3-hydroxy-3-methylglutaryl CoA reductase and acyl-CoA: cholesterol acyltransferase activities were significantly higher and lower, respectively, in both supplemented groups than the control group. Total fecal sterol content was significantly increased in lovastatin and especially naringin group. In histopathological analyses, only control group exhibited hepatic lipid droplets, cardiac adipocyte infiltration and slight damage of endothelial lining in aortic wall, but two supplements retarded these atherogenic signs. It would appear that both naringin and lovastatin contributed to hypocholesterolemic action via down-regulated ACAT activity and higher excretion of fecal sterols in response to high-cholesterol feeding. Also, naringin su...Continue Reading

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Dec 25, 2010·Inflammation Research : Official Journal of the European Histamine Research Society ... [et Al.]·Mandipika Jain, Hamendra Singh Parmar
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