PMID- 8937435 OWN - NLM STAT- MEDLINE DCOM- 19970102 LR - 20221207 IS - 0006-2952 (Print) IS - 0006-2952 (Linking) VI - 52 IP - 8 DP - 1996 Oct 25 TI - Studies on the mechanism of p-chloroamphetamine neurotoxicity. PG - 1271-7 AB - Studies were conducted to investigate the sensitivity of p-chloroamphetamine (PCA)-induced neurochemical changes to various pharmacological manipulations known to block the neurochemical effects of 3,4-methylenedioxymethamphetamine (MDMA). The monoamine oxidase-B (MAO-B) inhibitor L-deprenyl (2 mg/kg) given 4 hr before a nonneurotoxic dose of PCA (2 mg/kg) was shown not to alter the amount of [3H]paroxetine bound to serotonin (5-HT) uptake sites 7 days after treatment. L-Deprenyl 4 hr before a neurotoxic dose of PCA (10 mg/kg) did not change the acute hyperthermia. Further, neither L-deprenyl nor another selective MAO-B inhibitor, MDL-72,974 (1.25 mg/kg), given 30 min before or daily for 4 days before a single dose of PCA attenuated or potentiated the decrease in the number of [3H]paroxetine binding sites measured 7 days after PCA treatment. The combination of the MAO-A inhibitor clorgyline (2.5 mg/kg) or a nonspecific dose of L-deprenyl (10 mg/kg) with the selective 5-HT releasing agent 5,6-methylenedioxy-2-aminoindan did not lead to changes in the levels of 5-HT, 5-hydroxyindoleacetic acid or dopamine 7 days after treatment. Finally, the 5-HT2A receptor antagonist MDL-11,939 (5 mg/kg) did not protect against the neurotoxicity of PCA. By comparing the present work with previous studies of MDMA, these results can be interpreted to suggest that the mechanism of the neurotoxicity induced by PCA is not identical to that induced by MDMA. The relationship of these results to the neurotoxicity induced by MDMA is also discussed. FAU - Sprague, J E AU - Sprague JE AD - Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA. FAU - Johnson, M P AU - Johnson MP FAU - Schmidt, C J AU - Schmidt CJ FAU - Nichols, D E AU - Nichols DE LA - eng PT - Comparative Study PT - Journal Article PL - England TA - Biochem Pharmacol JT - Biochemical pharmacology JID - 0101032 RN - 0 (Indans) RN - 0 (Monoamine Oxidase Inhibitors) RN - 0 (Neuroprotective Agents) RN - 0 (Neurotoxins) RN - 0 (Serotonin Agents) RN - 0 (Serotonin Uptake Inhibitors) RN - 0DMJ6G3XBF (5,6-methylenedioxy-2-aminoindane) RN - 2K1V7GP655 (Selegiline) RN - 333DO1RDJY (Serotonin) RN - 41VRH5220H (Paroxetine) RN - 54-16-0 (Hydroxyindoleacetic Acid) RN - 64-12-0 (p-Chloroamphetamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - LYJ16FZU9Q (Clorgyline) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Animals MH - Brain/drug effects/metabolism MH - Clorgyline/pharmacology MH - Dopamine/metabolism MH - Fever/chemically induced MH - Hydroxyindoleacetic Acid/metabolism MH - Indans/pharmacology MH - Male MH - Monoamine Oxidase Inhibitors/pharmacology MH - N-Methyl-3,4-methylenedioxyamphetamine/toxicity MH - Neuroprotective Agents/pharmacology MH - Neurotoxins/*toxicity MH - Paroxetine/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Selegiline/pharmacology MH - Serotonin/metabolism MH - Serotonin Agents/toxicity MH - Selective Serotonin Reuptake Inhibitors/pharmacology MH - p-Chloroamphetamine/*toxicity EDAT- 1996/10/25 00:00 MHDA- 1996/10/25 00:01 CRDT- 1996/10/25 00:00 PHST- 1996/10/25 00:00 [pubmed] PHST- 1996/10/25 00:01 [medline] PHST- 1996/10/25 00:00 [entrez] AID - 0006-2952(96)00482-0 [pii] AID - 10.1016/0006-2952(96)00482-0 [doi] PST - ppublish SO - Biochem Pharmacol. 1996 Oct 25;52(8):1271-7. doi: 10.1016/0006-2952(96)00482-0.