PMID- 8522960 OWN - NLM STAT- MEDLINE DCOM- 19960124 LR - 20221207 IS - 0022-3042 (Print) IS - 0022-3042 (Linking) VI - 66 IP - 1 DP - 1996 Jan TI - Carrier-mediated release of serotonin by 3,4-methylenedioxymethamphetamine: implications for serotonin-dopamine interactions. PG - 243-9 AB - In vivo microdialysis was used to determine whether the 3,4-methylenedioxymethamphetamine (MDMA)-induced release of serotonin (5-HT) in vivo involves a carrier-mediated process and to investigate further the state-dependent interaction between 5-HT and dopamine. MDMA produced a dose-dependent increase in the extracellular concentration of 5-HT in the striatum and prefrontal cortex that was attenuated by treatment with fluoxetine but not by tetrodotoxin. Suppression by fluoxetine of the MDMA-induced release of 5-HT was accompanied by a suppression of the MDMA-induced release of dopamine. Administration of MDMA to rats treated with carbidopa and L-5-hydroxytryptophan resulted in a synergistic elevation of the extracellular concentration of 5-HT that was much greater than that produced by either treatment alone. The MDMA-induced release of dopamine by MDMA also was potentiated in 5-hydroxytryptophan-treated rats. These data are consistent with the view that MDMA increases the extracellular concentration of 5-HT by facilitating carrier-mediated 5-HT release, which can be enhanced greatly under conditions in which 5-HT synthesis is stimulated. Moreover, these data are supportive of a state-dependent, stimulatory role of 5-HT in the regulation of dopamine release. FAU - Gudelsky, G A AU - Gudelsky GA AD - Department of Psychiatry, Case Western Reserve University, Cleveland, Ohio, USA. FAU - Nash, J F AU - Nash JF LA - eng GR - DA 07427/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - J Neurochem JT - Journal of neurochemistry JID - 2985190R RN - 0 (Carrier Proteins) RN - 0 (Membrane Glycoproteins) RN - 0 (Membrane Transport Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Serotonin Agents) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - 0 (Serotonin Uptake Inhibitors) RN - 0 (Slc6a4 protein, rat) RN - 01K63SUP8D (Fluoxetine) RN - 333DO1RDJY (Serotonin) RN - 4368-28-9 (Tetrodotoxin) RN - C1LJO185Q9 (5-Hydroxytryptophan) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - MNX7R8C5VO (Carbidopa) RN - VTD58H1Z2X (Dopamine) SB - IM MH - 5-Hydroxytryptophan/pharmacology MH - Animals MH - Carbidopa/pharmacology MH - Carrier Proteins/*physiology MH - Corpus Striatum/drug effects/*metabolism MH - Dopamine/*metabolism MH - Drug Synergism MH - Fluoxetine/pharmacology MH - Frontal Lobe/drug effects/*metabolism MH - Male MH - Membrane Glycoproteins/*physiology MH - *Membrane Transport Proteins MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology/toxicity MH - *Nerve Tissue Proteins MH - Rats MH - Rats, Sprague-Dawley MH - Serotonin/*metabolism MH - Serotonin Agents/*pharmacology MH - Serotonin Plasma Membrane Transport Proteins MH - Selective Serotonin Reuptake Inhibitors/pharmacology MH - Tetrodotoxin/pharmacology EDAT- 1996/01/01 00:00 MHDA- 1996/01/01 00:01 CRDT- 1996/01/01 00:00 PHST- 1996/01/01 00:00 [pubmed] PHST- 1996/01/01 00:01 [medline] PHST- 1996/01/01 00:00 [entrez] AID - 10.1046/j.1471-4159.1996.66010243.x [doi] PST - ppublish SO - J Neurochem. 1996 Jan;66(1):243-9. doi: 10.1046/j.1471-4159.1996.66010243.x.