PMID- 16427030 OWN - NLM STAT- MEDLINE DCOM- 20060811 LR - 20141120 IS - 0006-3223 (Print) IS - 0006-3223 (Linking) VI - 60 IP - 1 DP - 2006 Jul 1 TI - Nitrous oxide and xenon prevent amphetamine-induced carrier-mediated dopamine release in a memantine-like fashion and protect against behavioral sensitization. PG - 49-57 AB - BACKGROUND: Amphetamine administration induces stimulation-independent dopamine release in the nucleus accumbens (NAcc) through reverse dopamine transport, a critical neurochemical event involved in its psychostimulant action, and furthermore decreases stimulation-dependent vesicular dopamine release. These effects may involve possible indirect glutamatergic mechanisms. METHODS: We investigated the effects of nitrous oxide and xenon, which possess antagonistic action at the N-methyl-D-aspartate (NMDA) receptor, on brain slices ex vivo on amphetamine-induced changes in carrier-mediated and KCl-evoked dopamine release in the NAcc, and in vivo on amphetamine-induced locomotor sensitization. RESULTS: Like the low-affinity NMDA receptor antagonist memantine, but not the prototypical compound MK-801, nitrous oxide and xenon at appropriate concentrations blocked both the increase in carrier-mediated dopamine release and locomotor sensitization produced by amphetamine. CONCLUSIONS: In contrast to what has generally been found using prototypical NMDA receptor antagonists, these data regarding the effect of memantine, nitrous oxide, and xenon support the hypothesis that activation of certain NMDA receptors (possibly those containing the NR1a/NR2D subunit) in the NAcc is involved in the amphetamine-induced increase in carrier-mediated dopamine release and the development of behavioral sensitization to amphetamine. Nitrous oxide, xenon, and memantine may be of therapeutic interest for treating drug dependence. FAU - David, Helene N AU - David HN AD - NNOXe Pharmaceuticals, Quebec, Canada. FAU - Ansseau, Marc AU - Ansseau M FAU - Lemaire, Marc AU - Lemaire M FAU - Abraini, Jacques H AU - Abraini JH LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060119 PL - United States TA - Biol Psychiatry JT - Biological psychiatry JID - 0213264 RN - 0 (Central Nervous System Stimulants) RN - 0 (Excitatory Amino Acid Antagonists) RN - 3H3U766W84 (Xenon) RN - 6LR8C1B66Q (Dizocilpine Maleate) RN - CK833KGX7E (Amphetamine) RN - K50XQU1029 (Nitrous Oxide) RN - VTD58H1Z2X (Dopamine) RN - W8O17SJF3T (Memantine) SB - IM MH - Amphetamine/*administration & dosage MH - Animals MH - Behavior, Animal/drug effects MH - Central Nervous System Stimulants/*administration & dosage MH - Dizocilpine Maleate/pharmacology MH - Dopamine/*metabolism MH - Dose-Response Relationship, Drug MH - Drug Interactions MH - Excitatory Amino Acid Antagonists/*pharmacology MH - In Vitro Techniques MH - Male MH - Memantine/*pharmacology MH - Motor Activity/*drug effects MH - Nitrous Oxide/*pharmacology MH - Nucleus Accumbens/drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Time Factors MH - Xenon/*pharmacology EDAT- 2006/01/24 09:00 MHDA- 2006/08/12 09:00 CRDT- 2006/01/24 09:00 PHST- 2005/04/27 00:00 [received] PHST- 2005/09/27 00:00 [revised] PHST- 2005/10/12 00:00 [accepted] PHST- 2006/01/24 09:00 [pubmed] PHST- 2006/08/12 09:00 [medline] PHST- 2006/01/24 09:00 [entrez] AID - S0006-3223(05)01272-2 [pii] AID - 10.1016/j.biopsych.2005.10.007 [doi] PST - ppublish SO - Biol Psychiatry. 2006 Jul 1;60(1):49-57. doi: 10.1016/j.biopsych.2005.10.007. Epub 2006 Jan 19.