PMID- 23179355 OWN - NLM STAT- MEDLINE DCOM- 20130816 LR - 20240408 IS - 1557-1904 (Electronic) IS - 1557-1890 (Print) IS - 1557-1890 (Linking) VI - 8 IP - 1 DP - 2013 Mar TI - MDMA increases glutamate release and reduces parvalbumin-positive GABAergic cells in the dorsal hippocampus of the rat: role of cyclooxygenase. PG - 58-65 LID - 10.1007/s11481-012-9420-x [doi] AB - 3,4-Methylenedioxymethamphetamine (MDMA; Ecstasy) is a popular drug of abuse with well-documented acute effects on serotonergic, dopaminergic, and cholinergic transmitter systems, as well as evidence of long-term disruption of serotoninergic systems in the rat brain. Recently, it was demonstrated that MDMA evokes a delayed and sustained increase in glutamate release in the hippocampus. The purpose of the present study was to determine the role of inflammatory mediators in the MDMA-induced increase in glutamate release, as well as the contribution of inflammatory pathways in the persistent neurochemical toxicity associated with repeated MDMA treatment. Treatment with the non-selective cyclooxygenase (COX) inhibitor ketoprofen and the COX-2 selective inhibitor nimesulide attenuated the increase in extracellular glutamate in the hippocampus evoked by repeated MDMA exposure (10 mg/kg, i.p., every 2 h); no attenuation was observed in rats treated with the COX-1 selective inhibitor piroxicam. Reverse dialysis of a major product of COX activity, prostaglandin E2, also resulted in a significant increase in extracellular glutamate in the hippocampus . Repeated exposure to MDMA diminished the number of parvalbumin-positive GABA interneurons in the dentate gyrus of the hippocampus, an effect that was attenuated by ketoprofen treatment. However, COX inhibition with ketoprofen did not prevent the long-term depletion of 5-HT in the hippocampus evoked by MDMA treatment. These data are supportive of the view that cyclooxygenase activity contributes to the mechanism underlying both the increased release of glutamate and decreased number of GABA interneurons in the rat hippocampus produced by repeated MDMA exposure. FAU - Anneken, John H AU - Anneken JH AD - James Winkle College of Pharmacy, University of Cincinnati, 3225 Eden Ave, Cincinnati, OH 45267, USA. FAU - Cunningham, Jacobi I AU - Cunningham JI FAU - Collins, Stuart A AU - Collins SA FAU - Yamamoto, Bryan K AU - Yamamoto BK FAU - Gudelsky, Gary A AU - Gudelsky GA LA - eng GR - DA 07427/DA/NIDA NIH HHS/United States GR - R01 DA007606/DA/NIDA NIH HHS/United States GR - DA016886/DA/NIDA NIH HHS/United States GR - R01 DA016866/DA/NIDA NIH HHS/United States GR - R01 DA007427/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20121118 PL - United States TA - J Neuroimmune Pharmacol JT - Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology JID - 101256586 RN - 0 (Adrenergic Uptake Inhibitors) RN - 0 (Cyclooxygenase Inhibitors) RN - 0 (Parvalbumins) RN - 333DO1RDJY (Serotonin) RN - 3KX376GY7L (Glutamic Acid) RN - 56-12-2 (gamma-Aminobutyric Acid) RN - 90Y4QC304K (Ketoprofen) RN - EC 1.14.99.1 (Prostaglandin-Endoperoxide Synthases) RN - K7Q1JQR04M (Dinoprostone) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Adrenergic Uptake Inhibitors/*pharmacology MH - Animals MH - Cell Count MH - Chromatography, High Pressure Liquid MH - Cyclooxygenase Inhibitors/pharmacology MH - Dentate Gyrus/cytology/drug effects MH - Dinoprostone/metabolism MH - Glutamic Acid/*metabolism MH - Hippocampus/*cytology/drug effects/enzymology MH - Immunohistochemistry MH - Interneurons/drug effects MH - Ketoprofen/pharmacology MH - Male MH - Microdialysis MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Parvalbumins/*metabolism MH - Presynaptic Terminals/drug effects MH - Prostaglandin-Endoperoxide Synthases/*physiology MH - Rats MH - Rats, Sprague-Dawley MH - Serotonin/metabolism MH - gamma-Aminobutyric Acid/*physiology PMC - PMC3587367 MID - NIHMS424160 EDAT- 2012/11/28 06:00 MHDA- 2013/08/21 06:00 PMCR- 2014/03/01 CRDT- 2012/11/27 06:00 PHST- 2012/08/29 00:00 [received] PHST- 2012/11/05 00:00 [accepted] PHST- 2012/11/27 06:00 [entrez] PHST- 2012/11/28 06:00 [pubmed] PHST- 2013/08/21 06:00 [medline] PHST- 2014/03/01 00:00 [pmc-release] AID - 10.1007/s11481-012-9420-x [doi] PST - ppublish SO - J Neuroimmune Pharmacol. 2013 Mar;8(1):58-65. doi: 10.1007/s11481-012-9420-x. Epub 2012 Nov 18.