PMID- 18082974 OWN - NLM STAT- MEDLINE DCOM- 20080415 LR - 20220330 IS - 0306-4522 (Print) IS - 0306-4522 (Linking) VI - 151 IP - 2 DP - 2008 Jan 24 TI - A comparison of the physiological, behavioral, neurochemical and microglial effects of methamphetamine and 3,4-methylenedioxymethamphetamine in the mouse. PG - 533-43 AB - 3,4-Methylenedioxymethamphetamine (MDMA) and methamphetamine (METH) are amphetamine analogues with similar persistent neurochemical effects in the mouse which some have described as neurotoxicity. We attempted to identify dose regimens of MDMA and METH with similar effects on behavioral and physiological variables in the mouse, then quantified the effects of these dose regimens on neurochemistry and microglial markers. Four discrete injections of saline, MDMA (10, 20, or 30 mg/kg), or METH (5 or 10 mg/kg) were administered to mice at 2 h intervals. Body weight was quantified immediately before each injection, and 2 h after the last injection, while core temperature and locomotor activity were continuously monitored via radiotelemetry. Mice were killed 72 h after the final injection and brains were rapidly dissected on ice. Dopamine content in various brain regions was quantified via high pressure liquid chromatography (HPLC), and microglial activation was assessed by saturation binding of the peripheral benzodiazepine receptor (PBR) ligand 1-(2-chlorophenyl)-N-methyl-N-(1-methylpropyl)-3-isoquinoline carboxamide ([(3)H]PK11195). Specific dose regimens of MDMA and METH induced similar reductions in body weight, depletions of dopamine and its metabolites, and similar hyperthermic and locomotor stimulant effects, but only METH activated microglia in striatum. These results suggest that repeated high doses of MDMA and METH that produce hyperthermia, locomotor stereotypy, weight loss and neurochemical depletion are not consistently accompanied by microglial activation. The finding that METH, but not MDMA, induces microglial effects in the striatum consistent with neurotoxicity might imply different mechanisms of toxic action for these two psychostimulants. FAU - Fantegrossi, W E AU - Fantegrossi WE AD - Division of Neuroscience, Yerkes National Primate Research Center, Emory University, 954 Gatewood Drive, Atlanta, GA 30322, USA. WEFantegrossi@uams.edu FAU - Ciullo, J R AU - Ciullo JR FAU - Wakabayashi, K T AU - Wakabayashi KT FAU - De La Garza, R 2nd AU - De La Garza R 2nd FAU - Traynor, J R AU - Traynor JR FAU - Woods, J H AU - Woods JH LA - eng GR - P51 RR000165-460317/RR/NCRR NIH HHS/United States GR - F31 DA005923-03/DA/NIDA NIH HHS/United States GR - R01 DA004087/DA/NIDA NIH HHS/United States GR - DA04087/DA/NIDA NIH HHS/United States GR - DA05923/DA/NIDA NIH HHS/United States GR - R21 DA020645/DA/NIDA NIH HHS/United States GR - R21 DA020645-01/DA/NIDA NIH HHS/United States GR - F31 DA005923/DA/NIDA NIH HHS/United States GR - DA09161/DA/NIDA NIH HHS/United States GR - P51 RR000165/RR/NCRR NIH HHS/United States GR - R01 DA009161/DA/NIDA NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20071117 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Central Nervous System Stimulants) RN - 0 (Hallucinogens) RN - 0 (Isoquinolines) RN - 44RAL3456C (Methamphetamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - VTD58H1Z2X (Dopamine) RN - YNF83VN1RL (PK 11195) SB - IM MH - Animals MH - Behavior, Animal/*drug effects MH - Body Temperature/drug effects MH - Body Weight/drug effects MH - Brain/pathology MH - Brain Chemistry/*drug effects MH - Central Nervous System Stimulants/*toxicity MH - Cerebral Cortex/drug effects/metabolism MH - Data Interpretation, Statistical MH - Dopamine/metabolism MH - Hallucinogens/*toxicity MH - Isoquinolines/metabolism MH - Male MH - Methamphetamine/*toxicity MH - Mice MH - Microglia/*drug effects MH - Motor Activity/drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/*toxicity MH - Neostriatum/drug effects/metabolism PMC - PMC2276981 MID - NIHMS39191 EDAT- 2007/12/18 09:00 MHDA- 2008/04/16 09:00 PMCR- 2009/01/24 CRDT- 2007/12/18 09:00 PHST- 2007/09/07 00:00 [received] PHST- 2007/11/06 00:00 [revised] PHST- 2007/11/12 00:00 [accepted] PHST- 2007/12/18 09:00 [pubmed] PHST- 2008/04/16 09:00 [medline] PHST- 2007/12/18 09:00 [entrez] PHST- 2009/01/24 00:00 [pmc-release] AID - S0306-4522(07)01406-6 [pii] AID - 10.1016/j.neuroscience.2007.11.007 [doi] PST - ppublish SO - Neuroscience. 2008 Jan 24;151(2):533-43. doi: 10.1016/j.neuroscience.2007.11.007. Epub 2007 Nov 17.