Abstract
Although lipogenic enzyme inductions are reduced by fat feeding, this reduction decreases with aging and is particularly detectable in the case of acetyl-CoA carboxylase and fatty acid synthetase activities. On the other hand, the fat-dependent reductions of malic enzyme and acetyl-CoA carboxylase were consistently relieved by triiodothyronine (T 3) treatment. The effects of T 3 treatment on these enzyme inductions were greater in 10-month-old rats than in 1-month-old rats, while the carbohydrate-dependent induction and the fat-dependent reduction of the enzymes decreased with aging. In these animals, alterations in malic enzyme mRNA translational activities were roughly in parallel to the enzyme activities. Therefore, the age-dependent alterations in effects of T 3 treatment and fat on malic enzyme induction do not appear to occur in post-translation.
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Schedule a callMore From: Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism
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