PMID- 23150428 OWN - NLM STAT- MEDLINE DCOM- 20130712 LR - 20211021 IS - 1521-009X (Electronic) IS - 0090-9556 (Print) IS - 0090-9556 (Linking) VI - 41 IP - 2 DP - 2013 Feb TI - Hepatic Cyp2d and Cyp26a1 mRNAs and activities are increased during mouse pregnancy. PG - 312-9 LID - 10.1124/dmd.112.049379 [doi] AB - There is considerable evidence that drug disposition is altered during human pregnancy and based on probe drug studies, CYP2D6 activity increases during human pregnancy. The aim of this study was to determine whether the changes of CYP2D6 activity observed during human pregnancy could be replicated in the mouse, and explore possible mechanisms of increased CYP2D6 activity during pregnancy. Cyp2d11, Cyp2d22, Cyp2d26 and Cyp2d40 mRNA was increased (P < 0.05) on gestational days (GD) 15 and 19 compared with the non-pregnant controls. There was no change (P > 0.05) in Cyp2d9 and Cyp2d10 mRNA. In agreement with the increased Cyp2d mRNA, Cyp2d-mediated dextrorphan formation from dextromethorphan was increased 2.7-fold (P < 0.05) on GD19 (56.8+/-39.4 pmol/min/mg protein) when compared with the non-pregnant controls (20.8+/-11.2 pmol/min/mg protein). An increase in Cyp26a1 mRNA (10-fold) and retinoic acid receptor (Rar)beta mRNA (2.8-fold) was also observed during pregnancy. The increase in Cyp26a1 and Rarbeta mRNA during pregnancy indicates increased retinoic acid signaling in the liver during pregnancy. A putative retinoic acid response element was identified within the Cyp2d40 promoter and the mRNA of Cyp2d40 correlated (P < 0.05) with Cyp26a1 and Rarbeta. These results show that Cyp2d mRNA is increased during mouse pregnancy the and mouse may provide a suitable model to investigate the mechanisms underlying the increased clearance of CYP2D6 probes observed during human pregnancy. Our findings also suggest that retinoic acid signaling in the liver is increased during pregnancy, which may have broader implications to energy homeostasis in the liver during pregnancy. FAU - Topletz, Ariel R AU - Topletz AR AD - School of Pharmacy, Department of Pharmaceutics, University of Washington, Seattle, WA 98195-7610, USA. FAU - Le, Huong N AU - Le HN FAU - Lee, Nora AU - Lee N FAU - Chapman, John D AU - Chapman JD FAU - Kelly, Edward J AU - Kelly EJ FAU - Wang, Joanne AU - Wang J FAU - Isoherranen, Nina AU - Isoherranen N LA - eng GR - UL1TR000423/TR/NCATS NIH HHS/United States GR - R01 GM081569/GM/NIGMS NIH HHS/United States GR - TL1 TR000422/TR/NCATS NIH HHS/United States GR - TL1TR000422/TR/NCATS NIH HHS/United States GR - UL1 TR000423/TR/NCATS NIH HHS/United States GR - R01 GM066233/GM/NIGMS NIH HHS/United States GR - R01GM081569/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20121113 PL - United States TA - Drug Metab Dispos JT - Drug metabolism and disposition: the biological fate of chemicals JID - 9421550 RN - 0 (RARA protein, human) RN - 0 (RNA, Messenger) RN - 0 (Rara protein, mouse) RN - 0 (Receptors, Retinoic Acid) RN - 0 (Retinoic Acid Receptor alpha) RN - 0 (retinoic acid receptor beta) RN - 04B7QNO9WS (Dextrorphan) RN - 5688UTC01R (Tretinoin) RN - 7355X3ROTS (Dextromethorphan) RN - 9035-51-2 (Cytochrome P-450 Enzyme System) RN - EC 1.14.14.1 (CYP2D9 protein, mouse) RN - EC 1.14.14.1 (Cyp26a1 protein, mouse) RN - EC 1.14.14.1 (Cyp2d22 protein, mouse) RN - EC 1.14.14.1 (Cytochrome P450 Family 2) RN - EC 1.14.14.1 (Retinoic Acid 4-Hydroxylase) SB - IM CIN - Drug Metab Dispos. 2013 Feb;41(2):256-62. PMID: 23328895 MH - Animals MH - Binding Sites MH - Cytochrome P-450 Enzyme System/*biosynthesis/*genetics MH - Cytochrome P450 Family 2 MH - Dextromethorphan/metabolism MH - Dextrorphan/metabolism MH - Enzyme Induction MH - Female MH - Hydroxylation MH - Liver/*enzymology MH - Mice MH - Models, Animal MH - Pregnancy MH - RNA, Messenger/*biosynthesis MH - Receptors, Retinoic Acid/biosynthesis/genetics MH - Response Elements MH - Retinoic Acid 4-Hydroxylase MH - Retinoic Acid Receptor alpha MH - Substrate Specificity MH - Tretinoin/metabolism PMC - PMC3558865 EDAT- 2012/11/15 06:00 MHDA- 2013/07/16 06:00 PMCR- 2014/02/01 CRDT- 2012/11/15 06:00 PHST- 2012/11/15 06:00 [entrez] PHST- 2012/11/15 06:00 [pubmed] PHST- 2013/07/16 06:00 [medline] PHST- 2014/02/01 00:00 [pmc-release] AID - dmd.112.049379 [pii] AID - DMD_049379 [pii] AID - 10.1124/dmd.112.049379 [doi] PST - ppublish SO - Drug Metab Dispos. 2013 Feb;41(2):312-9. doi: 10.1124/dmd.112.049379. Epub 2012 Nov 13.