PMID- 2574428 OWN - NLM STAT- MEDLINE DCOM- 19900125 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 105 IP - 3 DP - 1989 Nov 6 TI - The N-methyl-D-aspartate (NMDA) receptor antagonist, dextrorphan, prevents the neurotoxic effects of 3,4-methylenedioxymethamphetamine (MDMA) in rats. PG - 300-6 AB - Using the systemically active, non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist dextrorphan, we explored the role of the NMDA receptor-calcium channel complex in the toxic mechanism of action of 3,4-methylenedioxymethamphetamine (MDMA). Rats were treated with MDMA, dextrorphan, or the combination of MDMA and increasing doses of dextrorphan, and then killed 10 days later for the assay of serotonin and dopamine in the striatum, hippocampus, and cortex. Dextrorphan totally prevented the serotonin-depleting effects of MDMA in the straitum, with a lessened but still significant blockade noted in the hippocampus and cortex. These findings may provide a clue to the molecular events underlying MDMA-induced neurotoxicity. FAU - Finnegan, K T AU - Finnegan KT AD - Institute For Medical Research, San Jose, CA 95128. FAU - Skratt, J J AU - Skratt JJ FAU - Irwin, I AU - Irwin I FAU - Langston, J W AU - Langston JW LA - eng PT - Journal Article PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Amphetamines) RN - 0 (Morphinans) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 0 (Receptors, Neurotransmitter) RN - 04B7QNO9WS (Dextrorphan) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - SY7Q814VUP (Calcium) SB - IM MH - 3,4-Methylenedioxyamphetamine/administration & dosage/analogs & derivatives/*antagonists & inhibitors/toxicity MH - Amphetamines/*antagonists & inhibitors MH - Animals MH - Brain/drug effects/metabolism MH - Calcium/metabolism MH - Dextrorphan/*pharmacology MH - Male MH - Morphinans/*pharmacology MH - N-Methyl-3,4-methylenedioxyamphetamine MH - Rats MH - Rats, Inbred Strains MH - Receptors, N-Methyl-D-Aspartate MH - Receptors, Neurotransmitter/*antagonists & inhibitors/metabolism EDAT- 1989/11/06 00:00 MHDA- 1989/11/06 00:01 CRDT- 1989/11/06 00:00 PHST- 1989/11/06 00:00 [pubmed] PHST- 1989/11/06 00:01 [medline] PHST- 1989/11/06 00:00 [entrez] AID - 0304-3940(89)90637-X [pii] AID - 10.1016/0304-3940(89)90637-x [doi] PST - ppublish SO - Neurosci Lett. 1989 Nov 6;105(3):300-6. doi: 10.1016/0304-3940(89)90637-x.