PMID- 12208316 OWN - NLM STAT- MEDLINE DCOM- 20030310 LR - 20190624 IS - 0014-2999 (Print) IS - 0014-2999 (Linking) VI - 450 IP - 3 DP - 2002 Aug 30 TI - Preprotachykinin A gene expression after administration of 3,4-methylene dioxymethamphetamine (Ecstasy). PG - 245-51 AB - This study tested the effects of 8 days of subchronic administration of 3,4-methylene dioxymethamphetamine (MDMA) (5 mg/kg b.w.) on preprotachykinin A mRNA levels in discrete rat brain regions. In situ hybridization examined preprotachykinin A mRNA levels in the core and shell of the nucleus accumbens, the islands of Calleja, the olfactory tubercle, the dorsal and ventral caudate-putamen, the bed nucleus of the stria terminalis, the medial preoptic area, the medial habenular nucleus and in the postero-dorsal part of the medial amygdala. Higher levels of preprotachykinin A mRNA were found in the core and shell of the nucleus accumbens, in the islands of calleja, in the olfactory tubercle, in the bed nucleus of the stria terminalis, in the medial habenular nucleus and the postero-dorsal part of the medial amygdala, compared to control animals. Conversely, increased preprotachykinin A mRNA levels were observed in the dorsal and ventral caudate-putamen in MDMA treated when compared to control rats. In the social memory test, MDMA significantly impaired rats' short-term working memory. These results show that chronic exposure to MDMA strongly affects preprotachykinin A mRNA levels in discrete rat brain regions. These changes occur in experimental conditions in which working memory is markedly reduced, suggesting that changes in gene expression of tachykinin mechanisms may contribute to the effects of MDMA on memory function. FAU - Pompei, Pierluigi AU - Pompei P AD - Department of Pharmacological Sciences and Experimental Medicine, University of Camerino, Via Scalzino 3, 62032 Camerino (MC), Italy. pete.pompei@unicam.it FAU - Cavazzuti, Elena AU - Cavazzuti E FAU - Martarelli, Daniele AU - Martarelli D FAU - Pediconi, Dario AU - Pediconi D FAU - Arletti, Rossana AU - Arletti R FAU - Lucas, Louis AU - Lucas L FAU - Massi, Maurizio AU - Massi M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Hallucinogens) RN - 0 (Protein Precursors) RN - 0 (RNA, Messenger) RN - 0 (Tachykinins) RN - 0 (preprotachykinin) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Brain/metabolism MH - Gene Expression MH - Hallucinogens/administration & dosage/*pharmacology MH - Injections, Intraperitoneal MH - Male MH - Memory/drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/administration & dosage/*pharmacology MH - Protein Precursors/*biosynthesis/genetics MH - RNA, Messenger/biosynthesis MH - Rats MH - Rats, Sprague-Dawley MH - Tachykinins/*biosynthesis/genetics EDAT- 2002/09/05 10:00 MHDA- 2003/03/11 04:00 CRDT- 2002/09/05 10:00 PHST- 2002/09/05 10:00 [pubmed] PHST- 2003/03/11 04:00 [medline] PHST- 2002/09/05 10:00 [entrez] AID - S0014299902021581 [pii] AID - 10.1016/s0014-2999(02)02158-1 [doi] PST - ppublish SO - Eur J Pharmacol. 2002 Aug 30;450(3):245-51. doi: 10.1016/s0014-2999(02)02158-1.