PMID- 8100196 OWN - NLM STAT- MEDLINE DCOM- 19930729 LR - 20190624 IS - 0014-2999 (Print) IS - 0014-2999 (Linking) VI - 235 IP - 1 DP - 1993 Apr 22 TI - Integrative transporter-mediated release from cytoplasmic and vesicular 5-hydroxytryptamine stores in cultured neurons. PG - 51-7 AB - The direct effects of 3,4-methylenedioxymethamphetamine (MDMA) and p-chloroamphetamine (PCA) were studied in microculture of fetal 5-hydroxytryptamine (5-HT) neurons. Both MDMA and PCA released 5-HT with the potency of PCA > MDMA by a mechanism inhibited by fluoxetine, and inhibitor of the 5-HT transporter. The transporter-mediated release by MDMA and PCA reduced intracellular stores of 5-HT. Both MDMA and PCA inhibit MAO-A activities, which also contributes to the increase of extracellular 5-HT levels. Deprenyl (10(-7) M) increased the amount of intracellular 5-HT and potentiated the MDMA- or PCA-induced release of 5-HT. Conversely, reserpine (10(-9) M) reduced the intracellular 5-HT levels and attenuated the transporter-mediated release. In addition, MDMA- or PCA-mediated release was attenuated by nimodipine (10(-8) M), an L-type Ca2+ channel antagonist. Our results indicate that MDMA- or PCA-induced release of 5-HT occurs from the cytoplasm to the media through the 5-HT transporter, and that the release may incorporate 5-HT from the vesicular stores. FAU - Gu, X F AU - Gu XF AD - Department of Biology, New York University, NY 10003. FAU - Azmitia, E C AU - Azmitia EC LA - eng GR - NIDA 271-90-7403/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Carrier Proteins) RN - 0 (Membrane Glycoproteins) RN - 0 (Membrane Transport Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - 0 (Slc6a4 protein, rat) RN - 01K63SUP8D (Fluoxetine) RN - 2K1V7GP655 (Selegiline) RN - 333DO1RDJY (Serotonin) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) RN - 57WA9QZ5WH (Nimodipine) RN - 64-12-0 (p-Chloroamphetamine) RN - 8B1QWR724A (Reserpine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - LYJ16FZU9Q (Clorgyline) SB - IM MH - 3,4-Methylenedioxyamphetamine/*analogs & derivatives/pharmacology MH - Animals MH - Brain Stem/cytology/drug effects MH - Carrier Proteins/*metabolism MH - Cells, Cultured MH - Clorgyline/pharmacology MH - Female MH - Fluoxetine/pharmacology MH - Membrane Glycoproteins/*metabolism MH - *Membrane Transport Proteins MH - N-Methyl-3,4-methylenedioxyamphetamine MH - *Nerve Tissue Proteins MH - Neurons/*drug effects/metabolism MH - Nimodipine/pharmacology MH - Pregnancy MH - Rats MH - Rats, Sprague-Dawley MH - Reserpine/pharmacology MH - Selegiline/pharmacology MH - Serotonin/*metabolism MH - Serotonin Plasma Membrane Transport Proteins MH - p-Chloroamphetamine/*pharmacology EDAT- 1993/04/22 00:00 MHDA- 1993/04/22 00:01 CRDT- 1993/04/22 00:00 PHST- 1993/04/22 00:00 [pubmed] PHST- 1993/04/22 00:01 [medline] PHST- 1993/04/22 00:00 [entrez] AID - 0014-2999(93)90819-4 [pii] AID - 10.1016/0014-2999(93)90819-4 [doi] PST - ppublish SO - Eur J Pharmacol. 1993 Apr 22;235(1):51-7. doi: 10.1016/0014-2999(93)90819-4.