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Implication of trans-11,trans-13 conjugated linoleic acid in the development of hepatic steatosis.
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(eng) SCOPE: Conjugated linoleic acids are linoleic acid isomers found in the diet that can also be produced through bacterial metabolism of polyunsaturated fatty acids. Our objective was to evaluate the contribution of fatty acid metabolites produced from polyunsaturated fatty acids by the gut microbiota in vivo to regulation of hepatic lipid metabolism and steatosis. METHODS AND RESULTS: In mice with depleted n-3 polyunsaturated fatty acids, we observed an accumulation of trans-11,trans-13 CLA and cis-9,cis-11 conjugated linoleic acids in the liver tissue that were associated with an increased triglyceride content and expression of lipogenic genes. We used an in vitro model to evaluate the impact of these two conjugated linoleic acids on hepatic lipid metabolism. In HepG2 cells, we observed that only trans-11,trans-13 conjugated linoleic acids recapitulated triglyceride accumulation and increased lipogenic gene expression, which is a phenomenon that may implicate the nuclear factors sterol regulatory element binding protein 1c (SREBP-1c) and carbohydrate-responsive element-binding protein (ChREBP). CONCLUSION: The trans-11,trans-13 conjugated linoleic acids can stimulate hepatic lipogenesis, which supports the conclusion that gut microbiota and related metabolites should be considered in the treatment of non-alcoholic liver disease.
Document type | Article de périodique (Journal article) – Article de recherche |
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Access type | Accès libre |
Publication date | 2018 |
Language | Anglais |
Journal information | "PLoS One" - Vol. 13, no. 2, p. e0192447 [1-14] (2018) |
Peer reviewed | yes |
Publisher | Public Library of Science ((United States) San Francisco, CA) |
e-issn | 1932-6203 |
Publication status | Publié |
Affiliations |
UCL
- SST/LIBST - Louvain Institute of Biomolecular Science and Technology UCL - SSS/LDRI - Louvain Drug Research Institute |
MESH Subject | Animals ; Fatty Liver ; Hep G2 Cells ; Humans ; Linoleic Acids, Conjugated ; Male ; Mice ; Mice, Inbred C57BL ; Nuclear Proteins ; Sterol Regulatory Element Binding Protein 1 ; Transcription Factors |
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Bibliographic reference | Pachikian, Barbara D. ; Druart, Céline ; Catry, Emilie ; Bindels, Laure B. ; Neyrinck, Audrey M. ; et. al. Implication of trans-11,trans-13 conjugated linoleic acid in the development of hepatic steatosis.. In: PLoS One, Vol. 13, no. 2, p. e0192447 [1-14] (2018) |
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Permanent URL | http://hdl.handle.net/2078.1/206690 |