PMID- 18433738 OWN - NLM STAT- MEDLINE DCOM- 20080808 LR - 20131121 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 1211 DP - 2008 May 23 TI - Involvement of D1 dopamine receptor in MDMA-induced locomotor activity and striatal gene expression in mice. PG - 1-5 LID - 10.1016/j.brainres.2008.03.016 [doi] AB - 3,4-Methylenedioxymethamphetamine (MDMA), a widely used recreational drug with psychoactive properties, induces both serotonin and dopamine release in the brain. In rats and mice MDMA induces behavioural changes and has rewarding effects but little is known about its cellular effects. We have previously shown that the ERK pathway is important for the changes in gene expression observed in mice striatum after treatment with this psychostimulant. In this study we investigated the role of D1 receptors in MDMA-induced locomotor hyperactivity and regulation of immediate-early genes (Fos, Fosb, Egr1 and Egr2) mRNA levels requiring ERK activity in mice striatum. We used the selective D1 receptor antagonist, SCH23390 at a dose (0.05 mg/kg) that did not influence locomotor activity. This dose totally blocked MDMA-induced locomotor activity but only partially the increase in transcription levels of Fos, Fosb, Egr1 and Egr2 (24%, 23%, 22% and 29% respectively). In conclusion, our results showed that D1 receptors play a key role in the acute MDMA-induced hyperlocomotion and that ERK pathway is partially under D1 receptors control to induce Fos, FosB, Egr1 and Egr2 transcription. FAU - Benturquia, Nadia AU - Benturquia N AD - Laboratoire de Neuropsychopharmacologie des addictions, (INSERM U705, CNRS UMR 7157), Universite Paris Descartes, Faculte de pharmacie, Paris, France. FAU - Courtin, Cindie AU - Courtin C FAU - Noble, Florence AU - Noble F FAU - Marie-Claire, Cynthia AU - Marie-Claire C LA - eng PT - Journal Article DEP - 20080320 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Benzazepines) RN - 0 (Dopamine Antagonists) RN - 0 (Hallucinogens) RN - 0 (Receptors, Dopamine D1) RN - 63231-63-0 (RNA) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Benzazepines/pharmacology MH - Dopamine Antagonists/pharmacology MH - Dose-Response Relationship, Drug MH - Gene Expression/drug effects MH - Hallucinogens/*pharmacology MH - Male MH - Mice MH - Motor Activity/*drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Neostriatum/drug effects/*metabolism MH - RNA/biosynthesis/isolation & purification MH - Receptors, Dopamine D1/*drug effects MH - Reverse Transcriptase Polymerase Chain Reaction EDAT- 2008/04/25 09:00 MHDA- 2008/08/09 09:00 CRDT- 2008/04/25 09:00 PHST- 2007/12/17 00:00 [received] PHST- 2008/02/08 00:00 [revised] PHST- 2008/03/07 00:00 [accepted] PHST- 2008/04/25 09:00 [pubmed] PHST- 2008/08/09 09:00 [medline] PHST- 2008/04/25 09:00 [entrez] AID - S0006-8993(08)00661-6 [pii] AID - 10.1016/j.brainres.2008.03.016 [doi] PST - ppublish SO - Brain Res. 2008 May 23;1211:1-5. doi: 10.1016/j.brainres.2008.03.016. Epub 2008 Mar 20.