PMID- 19076925 OWN - NLM STAT- MEDLINE DCOM- 20090805 LR - 20131121 IS - 1369-1600 (Electronic) IS - 1355-6215 (Linking) VI - 14 IP - 2 DP - 2009 Apr TI - Ecstasy-induced oxidative stress to adolescent rat brain mitochondria in vivo: influence of monoamine oxidase type A. PG - 185-93 LID - 10.1111/j.1369-1600.2008.00143.x [doi] AB - The administration of a neurotoxic dose of 3,4-methylenedioxymethamphetamine (MDMA; 'ecstasy') to the rat results in mitochondrial oxidative damage in the central nervous system, namely lipid and protein oxidation and mitochondrial DNA deletions with subsequent impairment of the correspondent protein expression. Although these toxic effects were shown to be prevented by monoamine oxidase B inhibition, the role of monoamine oxidase A (MAO-A) in MDMA-mediated mitochondrial damage remains to be evaluated. Thus, the aim of the present study was to clarify the potential interference of a specific inhibition of MAO-A by clorgyline, on the deleterious effects produced by a binge administration of a neurotoxic dose of MDMA (10 mg MDMA/kg of body weight, intraperitoneally, every 2 hours in a total of four administrations) to an adolescent rat model. The parameters evaluated were mitochondrial lipid peroxidation, protein carbonylation and expression of the respiratory chain protein subunits II of reduced nicotinamide adenine dinucleotide dehydrogenase (NDII) and I of cytochrome oxidase (COXI). Considering that hyperthermia has been shown to contribute to the neurotoxic effects of MDMA, another objective of the present study was to evaluate the body temperature changes mediated by MDMA with a MAO-A selective inhibition by clorgyline. The obtained results demonstrated that the administration of a neurotoxic binge dose of MDMA to an adolescent rat model previously treated with the specific MAO-A inhibitor, clorgyline, resulted in synergistic effects on serotonin- (5-HT) mediated behaviour and body temperature, provoking high mortality. Inhibition of MAO-A by clorgyline administration had no protective effect on MDMA-induced alterations on brain mitochondria (increased lipid peroxidation, protein carbonylation and decrease in the expression of the respiratory chain subunits NDII and COXI), although it aggravated MDMA-induced decrease in the expression of COXI. These results reinforce the notion that the concomitant use of MAO-A inhibitors and MDMA is counter indicated because of the resulting severe synergic toxicity. FAU - Alves, Ema AU - Alves E AD - Grupo Neurocomportamento, Instituto de Biologia Molecular e Celular (IBMC), University of Porto (UP), Porto, Portugal. FAU - Summavielle, Teresa AU - Summavielle T FAU - Alves, Cecilia Juliana AU - Alves CJ FAU - Custodio, Jose Barata Antunes AU - Custodio JB FAU - Fernandes, Eduarda AU - Fernandes E FAU - de Lourdes Bastos, Maria AU - de Lourdes Bastos M FAU - Tavares, Maria Amelia AU - Tavares MA FAU - Carvalho, Felix AU - Carvalho F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081212 PL - United States TA - Addict Biol JT - Addiction biology JID - 9604935 RN - 0 (Hallucinogens) RN - 0 (Monoamine Oxidase Inhibitors) RN - EC 1.4.3.4 (Monoamine Oxidase) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Animals, Newborn MH - Brain/*drug effects/*enzymology/metabolism MH - Hallucinogens/*adverse effects MH - Lipid Peroxidation/drug effects MH - Mitochondria/*drug effects/*enzymology MH - Monoamine Oxidase/*metabolism MH - Monoamine Oxidase Inhibitors/*pharmacology MH - N-Methyl-3,4-methylenedioxyamphetamine/*toxicity MH - Neurotoxicity Syndromes/enzymology MH - Oxidative Stress/*drug effects MH - Rats MH - Rats, Wistar EDAT- 2008/12/17 09:00 MHDA- 2009/08/06 09:00 CRDT- 2008/12/17 09:00 PHST- 2008/12/17 09:00 [entrez] PHST- 2008/12/17 09:00 [pubmed] PHST- 2009/08/06 09:00 [medline] AID - ADB143 [pii] AID - 10.1111/j.1369-1600.2008.00143.x [doi] PST - ppublish SO - Addict Biol. 2009 Apr;14(2):185-93. doi: 10.1111/j.1369-1600.2008.00143.x. Epub 2008 Dec 12.