PMID- 23439660 OWN - NLM STAT- MEDLINE DCOM- 20131029 LR - 20211021 IS - 1521-009X (Electronic) IS - 0090-9556 (Linking) VI - 41 IP - 5 DP - 2013 May TI - Induction of xenobiotic receptors, transporters, and drug metabolizing enzymes by oxycodone. PG - 1060-9 LID - 10.1124/dmd.112.050401 [doi] AB - Perturbations of the expression of transporters and drug-metabolizing enzymes (DMEs) by opioids can be the locus of deleterious drug-drug interactions (DDIs). Many transporters and DMEs are regulated by xenobiotic receptors [XRs; e.g., pregnane X receptor (PXR), constitutive androstane receptor (CAR), and Aryl hydrocarbon receptor (AhR)]; however, there is a paucity of information regarding the influence of opioids on XRs. The objective of this study was to determine the influence of oxycodone administration (15 mg/kg intraperitoneally twice daily for 8 days) on liver expression of XRs, transporters, and DMEs in rats. Microarray, quantitative real-time polymerase chain reaction and immunoblotting analyses were used to identify significantly regulated genes. Three XRs (e.g., PXR, CAR, and AhR), 27 transporters (e.g., ABCB1 and SLC22A8), and 19 DMEs (e.g., CYP2B2 and CYP3A1) were regulated (P < 0.05) with fold changes ranging from -46.3 to 17.1. Using MetaCore (computational platform), we identified a unique gene-network of transporters and DMEs assembled around PXR, CAR, and AhR. Therefore, a series of transactivation/translocation assays were conducted to determine whether the observed changes of transporters/DMEs are mediated by direct activation of PXR, CAR, or AhR by oxycodone or its major metabolites (noroxycodone and oxymorphone). Neither oxycodone nor its metabolites activated PXR, CAR, or AhR. Taken together, these findings identify a signature hepatic gene-network associated with repeated oxycodone administration in rats and demonstrate that oxycodone alters the expression of many transporters and DMEs (without direct activation of PXR, CAR, and AhR), which could lead to undesirable DDIs after coadministration of substrates of these transporters/DMEs with oxycodone. FAU - Hassan, Hazem E AU - Hassan HE AD - Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland, USA. FAU - Myers, Alan L AU - Myers AL FAU - Lee, Insong J AU - Lee IJ FAU - Mason, Clifford W AU - Mason CW FAU - Wang, Duan AU - Wang D FAU - Sinz, Michael W AU - Sinz MW FAU - Wang, Hongbing AU - Wang H FAU - Eddington, Natalie D AU - Eddington ND LA - eng GR - R01 DK061652/DK/NIDDK NIH HHS/United States PT - Journal Article DEP - 20130225 PL - United States TA - Drug Metab Dispos JT - Drug metabolism and disposition: the biological fate of chemicals JID - 9421550 RN - 0 (Receptors, Drug) RN - 0 (Xenobiotics) RN - CD35PMG570 (Oxycodone) SB - IM MH - Animals MH - Cell Line, Tumor MH - Gene Expression/drug effects MH - Humans MH - Liver/drug effects/metabolism MH - Male MH - Oxycodone/*pharmacology MH - Polymerase Chain Reaction MH - Rats MH - Rats, Sprague-Dawley MH - Real-Time Polymerase Chain Reaction MH - Receptors, Drug/*biosynthesis/genetics MH - Transcriptional Activation MH - Xenobiotics/*metabolism EDAT- 2013/02/27 06:00 MHDA- 2013/10/30 06:00 CRDT- 2013/02/27 06:00 PHST- 2013/02/27 06:00 [entrez] PHST- 2013/02/27 06:00 [pubmed] PHST- 2013/10/30 06:00 [medline] AID - dmd.112.050401 [pii] AID - 10.1124/dmd.112.050401 [doi] PST - ppublish SO - Drug Metab Dispos. 2013 May;41(5):1060-9. doi: 10.1124/dmd.112.050401. Epub 2013 Feb 25.