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Maternal conjugated linoleic acid modulates TAG metabolism in adult rat offspring

  • Jimena Lavandera (a1) (a2), Carolina D. Gerstner (a1) (a2), Juliana Saín (a1) (a2), Ana C. Fariña (a1), Marcela A. González (a1) and Claudio A. Bernal (a1) (a2)...

Abstract

Conjugated linoleic acid (CLA) might regulate the lipid depots in liver and adipose tissue. As there is an association between maternal nutrition, fat depots and risk of offspring chronic disease, the aim was to investigate the effect of maternal CLA consumption on TAG regulation and some inflammatory parameters in adult male rat offspring receiving or not receiving CLA. Female Wistar rats were fed control (C) or CLA-supplemented (1 %, w/w) diets during 4 weeks before and throughout pregnancy and lactation. After weaning, male offspring of CLA rats were fed C or CLA diets (CLA/C and CLA/CLA groups, respectively), whereas C male rat offspring were fed a C diet (C/C group) for 9 weeks. Serum TAG levels were increased in the CLA/CLA and CLA/C groups, associated with a reduction of lipoprotein lipase activity and weights of adipose tissue. The liver TAG levels were decreased in the CLA/CLA group, related to a significant reduction of fatty acid synthase (FAS), acetyl-CoA carboxylase (ACC) and glucose-6-phosphate dehydrogenase enzyme activities, as well as to the mRNA levels of FAS, ACC, stearoyl-CoA desaturase-1 and sterol regulatory element-binding protein-1c. Even though normal TAG levels were found in the liver of CLA/C rats, a reduction of lipogenesis was also observed. Thus, these results demonstrated a programming effect of CLA on the lipid metabolic pathways leading to a preventive effect on the TAG accretion in adipose tissue and the liver of male rat offspring. This knowledge could be important to develop some dietary strategies leading to a reduced incidence of obesity and fatty acid liver disease in humans.

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Corresponding author

* Corresponding author: C. A. Bernal, fax +54 342 457 5221, email cbernal@fbcb.unl.edu.ar

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Keywords

Maternal conjugated linoleic acid modulates TAG metabolism in adult rat offspring

  • Jimena Lavandera (a1) (a2), Carolina D. Gerstner (a1) (a2), Juliana Saín (a1) (a2), Ana C. Fariña (a1), Marcela A. González (a1) and Claudio A. Bernal (a1) (a2)...

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