Dietary Conjugated Linoleic Acid Induces Tissue-Specific Lipoprotein Lipase mRNA Modulation in High-Sucrose-Fed Mice

Dietary Conjugated Linoleic Acid Induces Tissue-Specific Lipoprotein Lipase mRNA Modulation in High-Sucrose-Fed Mice

Lyssia Castellanos-Tapiaa, Gloria Yepiz-Plasenciab, Silvia Y. Moya-Camarenaaa

Ann Nutr Metab 2009;54:131-137 (DOI: 10.1159/000210434)

  Abstract

Background/Aims: To delineate the hypotriglyceridemic effect of conjugated linoleic acid (CLA) in mice, the effect of this fatty acid on lipoprotein lipase (LPL) and apolipoprotein C-III (ApoCIII) mRNA accumulation in muscle, adipose and liver tissue was studied. Methods: CD-1 mice were housed in groups of 6 and randomized to one of three experimental diets for 3 weeks: SUC: 65% sucrose by weight; CLA: 1% CLA oil (34.4% c9,t11; 35.1% t10,c12 and 4.1% other conjugated isomers) and 65% sucrose, and DEX: 65% dextrose, as a control. Results: LPL mRNA levels in muscle tissue were increased in the DEX group and in the CLA group (240% increase) compared with the SUC group. In contrast, LPL mRNA levels were 81% lower in epididymal adipose tissue from the CLA group compared with the SUC group. There was no effect of dietary treatments on ApoCIII mRNA accumulation in the liver. Conclusions: These data suggest that dietary CLA may induce partitioning of circulating triglycerides to muscle tissue, preventing their accumulation in adipocytes