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Naringin, the major grapefruit flavonoid, specifically affects atherosclerosis development in diet-induced hypercholesterolemia in mice.
MedLine Citation:
PMID:  21684135     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Naringin (NAR) from grapefruit has exhibited potential protective effects against atherosclerosis development. However, specific mechanisms responsible for such effects are poorly understood. Thus, we aimed to investigate the antiatherogenic effects of NAR in different mouse models of hypercholesterolemia and decipher its molecular targets in the aorta using transcriptomic approach. Two mouse models of hypercholesterolemia, wild-type mice fed a high-fat/high-cholesterol diet and apolipoprotein E-deficient mice fed a semisynthetic diet, were studied. Mice were fed a respective control diets supplemented or not for 18 weeks with 0.02% of NAR, that is, nutritional supplementation. NAR supplementation reduced plaque progression only in wild-type mice fed the high-fat/high-cholesterol diet (-41%). Consistent with this protective effect, NAR reduced plasma non-high-density lipoprotein cholesterol concentrations as well as biomarkers of endothelial dysfunction. Microarray studies performed on aortas demonstrated differentially expressed genes encoding proteins involved in cell adhesion, actin cytoskeleton organization and cell division. Thus, the changes in gene expression induced by NAR could suggest a limited atherosclerosis progression by preventing immune cell adhesion and infiltration in the intima of vascular wall, as well as smooth muscle cell proliferation. Furthermore, this hypothesis was strengthened by in vitro experiments, which showed the ability of naringenin to reduce monocyte adhesion to endothelial cells and smooth muscle cell proliferation. In conclusion, this study revealed the antiatherogenic effect of NAR supplemented at a nutritionally achievable dose, specifically toward diet-induced atherosclerosis, and depicted its multitarget mode of action at the vascular level.
Authors:
Audrey Chanet; Dragan Milenkovic; Christiane Deval; Mylène Potier; Joël Constans; Andrzej Mazur; Catherine Bennetau-Pelissero; Christine Morand; Annie M Bérard
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-16
Journal Detail:
Title:  The Journal of nutritional biochemistry     Volume:  -     ISSN:  1873-4847     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-6-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010081     Medline TA:  J Nutr Biochem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
INRA, UMR 1019, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand ; Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine, BP 10448, F-63000 Clermont-Ferrand.
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