PMID- 21446053 OWN - NLM STAT- MEDLINE DCOM- 20111004 LR - 20221207 IS - 1099-081X (Electronic) IS - 0142-2782 (Linking) VI - 32 IP - 4 DP - 2011 May TI - Induction of drug efflux protein expression by venlafaxine but not desvenlafaxine. PG - 233-44 LID - 10.1002/bdd.753 [doi] AB - Venlafaxine and its metabolite desvenlafaxine are serotonin-norepinephrine reuptake inhibitors currently prescribed for the treatment of depression. Previously, it was reported that venlafaxine is an inducer of MDR1, the gene responsible for P-glycoprotein (P-gp). The present study expanded upon these findings by examining the effect of venlafaxine and desvenlafaxine on the expression of both P-gp and the breast cancer resistance protein (BCRP) in human brain endothelial cells (HBMEC), an in vitro model of the blood-brain barrier (BBB). The HBMEC were treated for 1 h with various concentrations (500 nM to 50 microM) of venlafaxine and desvenlafaxine. Western blot analysis revealed treatment with venlafaxine significantly induced the expression of P-gp (2-fold) and BCRP (1.75-fold) in a dose-dependent manner, while treatment with desvenlafaxine had no effect on drug efflux transporter expression. To determine the functional significance of this effect, the permeability of a known drug efflux probe, rhodamine 123, across the BBB model and Caco-2 cells, a model of intestinal absorption, were examined. Treatment with venlafaxine (1-50 microM) for 1 h significantly reduced the apical-to-basolateral permeability of R123 across the BBB model (30%) and Caco-2 cell monolayers (25%), indicative of increased drug efflux transporter expression at the apical membrane. Conversely, desvenlafaxine had no effect on R123 permeability in either cellular model. These studies indicate that venlafaxine, but not desvenlafaxine is an inducer of drug efflux transporter expression, which consequently increases the potential for clinical drug-drug interactions. Therefore, based on these preliminary results, caution should be taken when prescribing venlafaxine with other P-gp substrates. CI - Copyright (c) 2011 John Wiley & Sons, Ltd. FAU - Bachmeier, Corbin J AU - Bachmeier CJ AD - The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL 34243, USA. FAU - Beaulieu-Abdelahad, David AU - Beaulieu-Abdelahad D FAU - Ganey, Nowell J AU - Ganey NJ FAU - Mullan, Michael J AU - Mullan MJ FAU - Levin, Gary M AU - Levin GM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110328 PL - England TA - Biopharm Drug Dispos JT - Biopharmaceutics & drug disposition JID - 7911226 RN - 0 (ABCG2 protein, human) RN - 0 (ATP Binding Cassette Transporter, Subfamily B, Member 1) RN - 0 (ATP Binding Cassette Transporter, Subfamily G, Member 2) RN - 0 (ATP-Binding Cassette Transporters) RN - 0 (Cyclohexanols) RN - 0 (Enzyme Inhibitors) RN - 0 (Fluorescent Dyes) RN - 0 (Neoplasm Proteins) RN - 0 (Serotonin Uptake Inhibitors) RN - 1N3CZ14C5O (Rhodamine 123) RN - 7D7RX5A8MO (Venlafaxine Hydrochloride) RN - VJT6J7R4TR (Rifampin) RN - ZB22ENF0XR (Desvenlafaxine Succinate) SB - IM MH - ATP Binding Cassette Transporter, Subfamily B, Member 1/biosynthesis MH - ATP Binding Cassette Transporter, Subfamily G, Member 2 MH - ATP-Binding Cassette Transporters/biosynthesis/drug effects MH - Biological Transport MH - Blood-Brain Barrier/*drug effects MH - Brain/*drug effects/metabolism MH - Caco-2 Cells MH - Cell Membrane Permeability/drug effects MH - Cells, Cultured MH - Cyclohexanols/*pharmacology/toxicity MH - Desvenlafaxine Succinate MH - Dose-Response Relationship, Drug MH - Drug Interactions MH - Endothelial Cells MH - Enzyme Inhibitors/pharmacology MH - Fluorescent Dyes/metabolism MH - Humans MH - Intestinal Absorption/drug effects MH - Neoplasm Proteins/biosynthesis/drug effects MH - Rhodamine 123/pharmacokinetics MH - Rifampin/pharmacology MH - Selective Serotonin Reuptake Inhibitors/*pharmacology/toxicity MH - Venlafaxine Hydrochloride EDAT- 2011/03/30 06:00 MHDA- 2011/10/05 06:00 CRDT- 2011/03/30 06:00 PHST- 2010/09/03 00:00 [received] PHST- 2011/02/01 00:00 [revised] PHST- 2011/02/13 00:00 [accepted] PHST- 2011/03/30 06:00 [entrez] PHST- 2011/03/30 06:00 [pubmed] PHST- 2011/10/05 06:00 [medline] AID - 10.1002/bdd.753 [doi] PST - ppublish SO - Biopharm Drug Dispos. 2011 May;32(4):233-44. doi: 10.1002/bdd.753. Epub 2011 Mar 28.