Induction of fatty acid synthesis by pravastatin sodium in rat liver and primary hepatocytes
1997
We examined the effect of pravastatin sodium (pravastatin), a 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, on fatty acid synthesis in rat liver. The repeated administration of pravastatin to rats at 250 mg/kg for 7 days led to a 2.8-fold increase in fatty acid synthesis in the liver. The diurnal change of fatty acid synthesis was not affected by the treatment. Hepatic fatty acid synthase activity was increased 3.2-fold, while acetyl-CoA carboxylase activity was not changed by the repeated administration of pravastatin. In rat hepatocytes, the incubation with 2 μg/ml pravastatin for 24 h increased fatty acid synthase activity 1.5-fold, as well as HMG-CoA reductase activity 2.8-fold. These results suggest that HMG-CoA reductase inhibitors might increase fatty acid synthesis in vivo through the induction of hepatic fatty acid synthase.
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