• Annals of medicine · Jan 2003

    Review

    Drug-activated nuclear receptors CAR and PXR.

    • Paavo Honkakoski, Tatsuya Sueyoshi, and Masahiko Negishi.
    • Department of Pharmaceutics, University of Kuopio, P.O. Box 1627, FIN-70211 Kuopio, Finland.
    • Ann. Med. 2003 Jan 1; 35 (3): 172-82.

    AbstractThe metabolism and elimination of drugs is mainly mediated by cytochrome P450 (CYP) enzymes, aided by conjugative enzymes and transport proteins. An integral aspect of this elimination process is the induction of drug metabolism through activation of gene expression of metabolic and transport proteins. There is compelling evidence that induction is regulated by drug-activated nuclear receptors constitutive androstane receptor (CAR) and pregnane X receptor (PXR). This review outlines the basic properties of CAR and PXR, their ligands and target genes, and the mechanisms of the induction process. The implications of nuclear receptor-mediated induction for drug research are also discussed.

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