Abstract
Retinoic acid is reported here to induce peroxisomal beta-oxidation activities in cultured rat hepatocytes, with a concomitant increase in respective peroxisomal mRNAs. The concentrations of retinoic acid required for inducing liver peroxisomal acyl-CoA oxidase were similar to those required for inducing liver transglutaminase. A putative 5′-flanking response element for retinoic acid may be found within the enhancer region involved in the induction of peroxisomal genes by xenobiotic amphipathic carboxylates.