PMID- 12270036 OWN - NLM STAT- MEDLINE DCOM- 20021122 LR - 20190815 IS - 0953-816X (Print) IS - 0953-816X (Linking) VI - 16 IP - 4 DP - 2002 Aug TI - Influences of the corticotropic axis and sympathetic activity on neurochemical consequences of 3,4-methylenedioxymethamphetamine (MDMA) administration in Fischer 344 rats. PG - 607-18 AB - The respective influences of the corticotropic axis and sympathetic activity on 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) immediate effects on body temperature and long-term neurotoxicity, as assessed by decreases in hippocampal and striatal [(3)H]5-hydroxytryptamine ([(3)H]5-HT) reuptake, [(3)H]paroxetine binding at 5-HT transporters (5-HTT), and 5-HT and 5-hydroxyindoleacetic acid (5-HIAA) levels, were examined in Fischer 344 rats. On each of the two injections of MDMA (5 or 10 mg/kg s.c. once a day for 2 consecutive days) body temperature rapidly increased in a dose-dependent manner. Six days after the last injection of 10 mg/kg MDMA, [(3)H]5-HT reuptake, [(3)H]paroxetine binding and 5-HT and 5-HIAA levels were decreased in the hippocampus and, to a lower extent, in striatum. Prior adrenalectomy (1 week beforehand), which weakened the immediate hyperthermic effect of MDMA, prevented the long-term MDMA-elicited reduction in hippocampal and striatal [(3)H]paroxetine binding. Supplementation of adrenalectomised Fischer 344 rats with corticosterone almost reinstated the immediate hyperthermic effect of MDMA and restored MDMA-elicited reduction in hippocampal and striatal [(3)H]paroxetine binding. In a final set of experiments, Fischer 344 rats were pretreated (30 min before each of the two injections of 10 mg/kg MDMA) with the ganglionic blocker chlorisondamine (2.5 mg/kg). This pretreatment markedly reduced the amplitudes of the immediate hyperthermia and long-term declines in hippocampal [(3)H]5-HT reuptake and [(3)H]paroxetine binding at 5-HTT, and in hippocampal and striatal 5-HT and 5-HIAA levels. These results suggest that sympathetic activity (possibly through its control of body temperature), but not corticotropic activity, plays a key role in MDMA-elicited neurotoxicity in Fischer 344 rats. FAU - Fernandez, Francesca AU - Fernandez F AD - NeuroGenetique et Stress, INSERM U471-INRA, Institut F. Magendie, Rue Camille Saint Saens, 33077 Bordeaux Cedex, France. FAU - Aguerre, Sylvie AU - Aguerre S FAU - Mormede, Pierre AU - Mormede P FAU - Chaouloff, Francis AU - Chaouloff F LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - France TA - Eur J Neurosci JT - The European journal of neuroscience JID - 8918110 RN - 333DO1RDJY (Serotonin) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Adrenal Cortex/*drug effects/*physiology MH - Adrenergic Fibers/*drug effects/metabolism/*physiology MH - Animals MH - Body Temperature/drug effects/physiology MH - Corpus Striatum/drug effects/metabolism MH - Hippocampus/drug effects/metabolism MH - Hypothalamo-Hypophyseal System/drug effects/metabolism MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Pituitary-Adrenal System/drug effects/metabolism MH - Rats MH - Rats, Inbred F344 MH - Serotonin/metabolism EDAT- 2002/09/25 06:00 MHDA- 2002/11/26 04:00 CRDT- 2002/09/25 06:00 PHST- 2002/09/25 06:00 [pubmed] PHST- 2002/11/26 04:00 [medline] PHST- 2002/09/25 06:00 [entrez] AID - 2110 [pii] AID - 10.1046/j.1460-9568.2002.02110.x [doi] PST - ppublish SO - Eur J Neurosci. 2002 Aug;16(4):607-18. doi: 10.1046/j.1460-9568.2002.02110.x.