PMID- 2443644 OWN - NLM STAT- MEDLINE DCOM- 19871105 LR - 20151119 IS - 0022-3565 (Print) IS - 0022-3565 (Linking) VI - 242 IP - 3 DP - 1987 Sep TI - 3,4-Methylenedioxymethamphetamine and 3,4-methylenedioxyamphetamine destroy serotonin terminals in rat brain: quantification of neurodegeneration by measurement of [3H]paroxetine-labeled serotonin uptake sites. PG - 911-6 AB - This study examines the effects of repeated systemic administration (20 mg/kg s.c., twice daily for 4 days) of 3,4-methylenedioxymethamphetamine (MDMA) and 3,4-methylenedioxyamphetamine (MDA) on levels of brain monoamines, their metabolites and on the density of monoamine uptake sites in various regions of rat brain. Marked reductions (30-60%) in the concentration of 5-hydroxyindoleacetic acid were observed in cerebral cortex, hippocampus, striatum, hypothalamus and midbrain at 2 weeks after a 4-day treatment regimen of MDMA or MDA; less consistent reductions in serotonin (5-HT) content were observed in these brain regions. In addition, both MDMA and MDA caused comparable and substantial reductions (50-75%) in the density of [3H]paroxetine-labeled 5-HT uptake sites in all brain regions examined. In contrast, neither MDMA nor MDA caused any widespread or long-term changes in the content of the catecholaminergic markers (i.e., norepinephrine, dopamine, 3,4 dihydroxyphenylacetic acid and homovanillic acid) or in the number of [3H]mazindol-labeled norepinephrine or dopamine uptake sites in the brain regions examined. These data demonstrate that MDMA and MDA cause long-lasting neurotoxic effects with respect to both the functional and structural integrity of serotonergic neurons in brain. Furthermore, our measurement of reductions in the density of 5-HT uptake sites provides a means for quantification of the neurodegenerative effects of MDMA and MDA on presynaptic 5-HT terminals. FAU - Battaglia, G AU - Battaglia G AD - Neuroscience Branch, National Institute on Drug Abuse, Baltimore, Maryland. FAU - Yeh, S Y AU - Yeh SY FAU - O'Hearn, E AU - O'Hearn E FAU - Molliver, M E AU - Molliver ME FAU - Kuhar, M J AU - Kuhar MJ FAU - De Souza, E B AU - De Souza EB LA - eng GR - NS 15199/NS/NINDS NIH HHS/United States GR - NS 21011/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Pharmacol Exp Ther JT - The Journal of pharmacology and experimental therapeutics JID - 0376362 RN - 0 (Amphetamines) RN - 0 (Piperidines) RN - 0 (Receptors, Serotonin) RN - 0 (Serotonin Antagonists) RN - 10028-17-8 (Tritium) RN - 333DO1RDJY (Serotonin) RN - 41VRH5220H (Paroxetine) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) RN - 54-16-0 (Hydroxyindoleacetic Acid) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - VTD58H1Z2X (Dopamine) SB - IM MH - 3,4-Methylenedioxyamphetamine/analogs & derivatives/*toxicity MH - Amphetamines/*toxicity MH - Animals MH - Brain/*drug effects MH - Brain Chemistry/drug effects MH - Dopamine/metabolism MH - Hydroxyindoleacetic Acid/analysis MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine MH - Paroxetine MH - Piperidines/*metabolism MH - Rats MH - Rats, Inbred Strains MH - Receptors, Serotonin/*drug effects MH - Serotonin/analysis/metabolism MH - Serotonin Antagonists/*metabolism MH - Tritium EDAT- 1987/09/01 00:00 MHDA- 1987/09/01 00:01 CRDT- 1987/09/01 00:00 PHST- 1987/09/01 00:00 [pubmed] PHST- 1987/09/01 00:01 [medline] PHST- 1987/09/01 00:00 [entrez] PST - ppublish SO - J Pharmacol Exp Ther. 1987 Sep;242(3):911-6.