Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene Expression

Objective. To summarize the recent studies on effect of conjugated linoleic acid (CLA) on hepatic steatosis and hepatic and adipose lipid metabolism highlighting the potential regulatory mechanisms. Methods. Sixty-four published experiments were summarized in which trans-10, cis-12 CLA was fed eithe...

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Main Authors: Diwakar Vyas, Anil Kumar G. Kadegowda, Richard A. Erdman
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Journal of Nutrition and Metabolism
Online Access:http://dx.doi.org/10.1155/2012/932928
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author Diwakar Vyas
Anil Kumar G. Kadegowda
Richard A. Erdman
author_facet Diwakar Vyas
Anil Kumar G. Kadegowda
Richard A. Erdman
author_sort Diwakar Vyas
collection DOAJ
description Objective. To summarize the recent studies on effect of conjugated linoleic acid (CLA) on hepatic steatosis and hepatic and adipose lipid metabolism highlighting the potential regulatory mechanisms. Methods. Sixty-four published experiments were summarized in which trans-10, cis-12 CLA was fed either alone or in combination with other CLA isomers to mice, rats, hamsters, and humans were compared. Summary and Conclusions. Dietary trans-10, cis-12 CLA induces a severe hepatic steatosis in mice with a more muted response in other species. Regardless of species, when hepatic steatosis was present, a concurrent decrease in body adiposity was observed, suggesting that hepatic lipid accumulation is a result of uptake of mobilized fatty acids (FA) from adipose tissue and the liver's inability to sufficiently increase FA oxidation and export of synthesized triglycerides. The potential role of liver FA composition, insulin secretion and sensitivity, adipokine, and inflammatory responses are discussed as potential mechanisms behind CLA-induced hepatic steatosis.
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spelling doaj-art-2f6ec6c7472341ddbca7bfd53e3f0b122025-02-03T01:07:27ZengWileyJournal of Nutrition and Metabolism2090-07242090-07322012-01-01201210.1155/2012/932928932928Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene ExpressionDiwakar Vyas0Anil Kumar G. Kadegowda1Richard A. Erdman2Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USADepartment of Animal and Veterinary Sciences, Clemson University, Clemson, SC 29634, USADepartment of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USAObjective. To summarize the recent studies on effect of conjugated linoleic acid (CLA) on hepatic steatosis and hepatic and adipose lipid metabolism highlighting the potential regulatory mechanisms. Methods. Sixty-four published experiments were summarized in which trans-10, cis-12 CLA was fed either alone or in combination with other CLA isomers to mice, rats, hamsters, and humans were compared. Summary and Conclusions. Dietary trans-10, cis-12 CLA induces a severe hepatic steatosis in mice with a more muted response in other species. Regardless of species, when hepatic steatosis was present, a concurrent decrease in body adiposity was observed, suggesting that hepatic lipid accumulation is a result of uptake of mobilized fatty acids (FA) from adipose tissue and the liver's inability to sufficiently increase FA oxidation and export of synthesized triglycerides. The potential role of liver FA composition, insulin secretion and sensitivity, adipokine, and inflammatory responses are discussed as potential mechanisms behind CLA-induced hepatic steatosis.http://dx.doi.org/10.1155/2012/932928
spellingShingle Diwakar Vyas
Anil Kumar G. Kadegowda
Richard A. Erdman
Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene Expression
Journal of Nutrition and Metabolism
title Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene Expression
title_full Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene Expression
title_fullStr Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene Expression
title_full_unstemmed Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene Expression
title_short Dietary Conjugated Linoleic Acid and Hepatic Steatosis: Species-Specific Effects on Liver and Adipose Lipid Metabolism and Gene Expression
title_sort dietary conjugated linoleic acid and hepatic steatosis species specific effects on liver and adipose lipid metabolism and gene expression
url http://dx.doi.org/10.1155/2012/932928
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