PMID- 16136551 OWN - NLM STAT- MEDLINE DCOM- 20060210 LR - 20131121 IS - 0012-1630 (Print) IS - 0012-1630 (Linking) VI - 47 IP - 2 DP - 2005 Sep TI - Repeated MDMA ("Ecstasy") exposure in adolescent male rats alters temperature regulation, spontaneous motor activity, attention, and serotonin transporter binding. PG - 145-57 AB - Previous research in our laboratory found that repeated exposure of adolescent rats to 3,4-methylenedioxymethamphetamine (MDMA) impaired working memory and reduced anxiety. The present experiment extended these findings by investigating the physiological, behavioral, and neurotoxic effects of a modified MDMA treatment regimen. Male Sprague-Dawley rats received 5 mg/kg of MDMA hourly for a period of 4 hr on every fifth day from postnatal day 35-60. Acute effects of the MDMA treatment included hypothermia, serotonin syndrome behavior, and ejaculation. Body weight gain was attenuated by repeated drug administration. The animals completed anxiety and working memory tests beginning 4 days after the final MDMA dose. MDMA altered habituation to the open-field, increased locomotor activity in the elevated plus-maze, decreased attention in the novel object-recognition test, and reduced serotonin transporter binding in the neocortex. These results indicate that repeated exposure to a relatively moderate MDMA dose during adolescence produces later changes in behavior and neurochemistry. CI - Copyright 2005 Wiley Periodicals, Inc FAU - Piper, Brian J AU - Piper BJ AD - Neuroscience and Behavior Program, University of Massachusetts, Amherst, Massachusetts, USA. FAU - Fraiman, Joseph B AU - Fraiman JB FAU - Meyer, Jerrold S AU - Meyer JS LA - eng GR - T32 NS007490/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Dev Psychobiol JT - Developmental psychobiology JID - 0164074 RN - 0 (Serotonin Agents) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Analysis of Variance MH - Animals MH - Attention/*drug effects MH - Body Temperature/drug effects MH - Body Temperature Regulation/*drug effects MH - Body Weight/drug effects MH - Dose-Response Relationship, Drug MH - Ejaculation/drug effects MH - Male MH - Maze Learning/drug effects MH - Motor Activity/*drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/administration & dosage/*toxicity MH - Protein Binding/*drug effects MH - Rats MH - Rats, Sprague-Dawley MH - Serotonin Agents/administration & dosage/toxicity MH - Serotonin Plasma Membrane Transport Proteins/*drug effects MH - Time Factors EDAT- 2005/09/02 09:00 MHDA- 2006/02/14 09:00 CRDT- 2005/09/02 09:00 PHST- 2005/09/02 09:00 [pubmed] PHST- 2006/02/14 09:00 [medline] PHST- 2005/09/02 09:00 [entrez] AID - 10.1002/dev.20085 [doi] PST - ppublish SO - Dev Psychobiol. 2005 Sep;47(2):145-57. doi: 10.1002/dev.20085.