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Trans-10,cis-12-CLA-caused lipodystrophy is associated with profound changes of fatty acid profiles of liver, white adipose tissue and erythrocytes in mice: possible link to tissue-specific alterations of fatty acid desaturation.
Ann Nutr Metab. 2010; 57(2):103-11.AN

Abstract

Dietary supplementation with conjugated linoleic acid (CLA) has been shown to reduce body fat mass. To investigate the effects of individual CLA isomers on the fatty acid profiles of lipogenic (liver and white adipose) and lipid sensitive (erythrocyte) tissues, BALB/c mice were fed with 1 of 2 diets supplemented with either a c9,t11-CLA-enriched and t10,c12-CLA-free or a CLA-mixture containing both isomers in equal amounts (1% w/w of the diet) for 5 weeks. A control group was fed with a diet enriched in sunflower oil to energy balance the CLA. Compared to the t10,c12-CLA-free and the control diets, we observed a significant reduction of adipose tissue accompanied by fatty livers in the CLA-mix-fed group. These alterations in body fat distribution entailed a conspicuous shift of the fatty acid profiles of adipose tissue and livers. Liver enlargement was mainly caused by accumulation of C18 monoenes that accounted for 67 ± 1% of total fatty acid methyl esters. The significant reduction of the 18:0/18:1 desaturation index in the liver upon CLA-mix diet indicated high stearoyl-CoA desaturase activity. In contrast, reduction in white adipose tissue was largely driven by percental reduction of monounsaturated fatty acids (p ≤ 0.001). 16:0/ 16:1 and 18:0/18:1 desaturation indices for white adipose tissue significantly increased, suggesting an inhibition of stearoyl-CoA desaturase upon CLA-mix diet. The fatty acid profile of the erythrocytes widely reflected that of livers, depending on the supplemented diet. These profound changes in fatty acid composition of lipogenic organs due to t10,c12-CLA intake may be the consequence of functional alterations of lipid metabolism.

Authors+Show Affiliations

Institute of Nutrition, Friedrich Schiller University, Dornburger Strasse 24, Jena, Germany.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20924169

Citation

Jaudszus, Anke, et al. "Trans-10,cis-12-CLA-caused Lipodystrophy Is Associated With Profound Changes of Fatty Acid Profiles of Liver, White Adipose Tissue and Erythrocytes in Mice: Possible Link to Tissue-specific Alterations of Fatty Acid Desaturation." Annals of Nutrition & Metabolism, vol. 57, no. 2, 2010, pp. 103-11.
Jaudszus A, Moeckel P, Hamelmann E, et al. Trans-10,cis-12-CLA-caused lipodystrophy is associated with profound changes of fatty acid profiles of liver, white adipose tissue and erythrocytes in mice: possible link to tissue-specific alterations of fatty acid desaturation. Ann Nutr Metab. 2010;57(2):103-11.
Jaudszus, A., Moeckel, P., Hamelmann, E., & Jahreis, G. (2010). Trans-10,cis-12-CLA-caused lipodystrophy is associated with profound changes of fatty acid profiles of liver, white adipose tissue and erythrocytes in mice: possible link to tissue-specific alterations of fatty acid desaturation. Annals of Nutrition & Metabolism, 57(2), 103-11. https://doi.org/10.1159/000319877
Jaudszus A, et al. Trans-10,cis-12-CLA-caused Lipodystrophy Is Associated With Profound Changes of Fatty Acid Profiles of Liver, White Adipose Tissue and Erythrocytes in Mice: Possible Link to Tissue-specific Alterations of Fatty Acid Desaturation. Ann Nutr Metab. 2010;57(2):103-11. PubMed PMID: 20924169.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Trans-10,cis-12-CLA-caused lipodystrophy is associated with profound changes of fatty acid profiles of liver, white adipose tissue and erythrocytes in mice: possible link to tissue-specific alterations of fatty acid desaturation. AU - Jaudszus,Anke, AU - Moeckel,Peter, AU - Hamelmann,Eckard, AU - Jahreis,Gerhard, Y1 - 2010/10/02/ PY - 2010/01/25/received PY - 2010/07/30/accepted PY - 2010/10/7/entrez PY - 2010/10/7/pubmed PY - 2011/3/11/medline SP - 103 EP - 11 JF - Annals of nutrition & metabolism JO - Ann Nutr Metab VL - 57 IS - 2 N2 - Dietary supplementation with conjugated linoleic acid (CLA) has been shown to reduce body fat mass. To investigate the effects of individual CLA isomers on the fatty acid profiles of lipogenic (liver and white adipose) and lipid sensitive (erythrocyte) tissues, BALB/c mice were fed with 1 of 2 diets supplemented with either a c9,t11-CLA-enriched and t10,c12-CLA-free or a CLA-mixture containing both isomers in equal amounts (1% w/w of the diet) for 5 weeks. A control group was fed with a diet enriched in sunflower oil to energy balance the CLA. Compared to the t10,c12-CLA-free and the control diets, we observed a significant reduction of adipose tissue accompanied by fatty livers in the CLA-mix-fed group. These alterations in body fat distribution entailed a conspicuous shift of the fatty acid profiles of adipose tissue and livers. Liver enlargement was mainly caused by accumulation of C18 monoenes that accounted for 67 ± 1% of total fatty acid methyl esters. The significant reduction of the 18:0/18:1 desaturation index in the liver upon CLA-mix diet indicated high stearoyl-CoA desaturase activity. In contrast, reduction in white adipose tissue was largely driven by percental reduction of monounsaturated fatty acids (p ≤ 0.001). 16:0/ 16:1 and 18:0/18:1 desaturation indices for white adipose tissue significantly increased, suggesting an inhibition of stearoyl-CoA desaturase upon CLA-mix diet. The fatty acid profile of the erythrocytes widely reflected that of livers, depending on the supplemented diet. These profound changes in fatty acid composition of lipogenic organs due to t10,c12-CLA intake may be the consequence of functional alterations of lipid metabolism. SN - 1421-9697 UR - https://www.unboundmedicine.com/medline/citation/20924169/Trans_10cis_12_CLA_caused_lipodystrophy_is_associated_with_profound_changes_of_fatty_acid_profiles_of_liver_white_adipose_tissue_and_erythrocytes_in_mice:_possible_link_to_tissue_specific_alterations_of_fatty_acid_desaturation_ L2 - https://www.karger.com?DOI=10.1159/000319877 DB - PRIME DP - Unbound Medicine ER -