PMID- 10958887 OWN - NLM STAT- MEDLINE DCOM- 20001128 LR - 20221207 IS - 0014-2999 (Print) IS - 0014-2999 (Linking) VI - 402 IP - 3 DP - 2000 Aug 25 TI - 3,4-methylenedioxymethamphetamine (MDMA, ecstasy)-induced egr-1 mRNA in rat brain: pharmacological manipulation. PG - 215-22 AB - Using in situ hybridization and immunohistochemical techniques, we examined the expression pattern of egr-1 mRNA and Egr-1 protein in several brain regions following administration of 3, 4-methylenedioxymethamphetamine (MDMA). Furthermore, we also studied the role of N-methyl-D-aspartate (NMDA) receptor, dopamine D(1) receptor, 5-hydroxytryptamine (5-HT) transporter or 5-HT(2A) receptor in the induction of egr-1 mRNA by MDMA. Basal constitutive levels of egr-1 mRNA were detected in control rat brains. A single administration of MDMA (10 mg/kg) caused marked induction of egr-1 mRNA in the prefrontal cortex, striatum and hippocampal dentate gyrus. However, no changes in the egr-1 mRNA levels were detected in the CA1 region of hippocampus and occipital cortex after administration of MDMA (10 mg/kg). Furthermore, the expression of egr-1 mRNA in the prefrontal cortex, striatum and hippocampal dentate gyrus after administration of MDMA (10 mg/kg) was blocked significantly by pretreatment with NMDA receptor antagonist (5R, 10S)-(+)-5-methyl-10,11-dihydro-5H-dibenzo[a,b]-cyclohepten-5, 10-imine ((+)-MK801; 1 mg/kg), dopamine D(1) receptor antagonist SCH 23390 (1 mg/kg) or 5-HT uptake inhibitor paroxetine (5 mg/kg), but not by 5-HT(2A) receptor antagonist SR46349B (5 mg/kg). However, high basal levels of Egr-1 immunoreactivity in the rat brain were not altered by administration of MDMA (10 mg/kg). These results suggest that MDMA alters the expression of egr-1 mRNA in several regions of rat brain, and that the expression of egr-1 mRNA by MDMA in the prefrontal cortex, striatum and hippocampal dentate gyrus appears to be mediated, at least in part, by NMDA receptor, dopamine D(1) receptor and 5-HT transporter. FAU - Shirayama, Y AU - Shirayama Y AD - Division of Cortical Function Disorders, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Kodaira, Japan. yukihiko.shirayama@yale.edu FAU - Hashimoto, K AU - Hashimoto K FAU - Iyo, M AU - Iyo M FAU - Watanabe, K AU - Watanabe K FAU - Higuchi, T AU - Higuchi T FAU - Minabe, Y AU - Minabe Y LA - eng PT - Journal Article PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Benzazepines) RN - 0 (DNA-Binding Proteins) RN - 0 (Dopamine Antagonists) RN - 0 (Early Growth Response Protein 1) RN - 0 (Egr1 protein, rat) RN - 0 (Excitatory Amino Acid Antagonists) RN - 0 (Fluorobenzenes) RN - 0 (Hallucinogens) RN - 0 (Immediate-Early Proteins) RN - 0 (Phenols) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Dopamine D1) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 0 (Serotonin Antagonists) RN - 0 (Serotonin Uptake Inhibitors) RN - 0 (Transcription Factors) RN - 130580-02-8 (SR 46349B) RN - 41VRH5220H (Paroxetine) RN - 6LR8C1B66Q (Dizocilpine Maleate) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Benzazepines/pharmacology MH - Brain Chemistry/*drug effects MH - DNA-Binding Proteins/*biosynthesis MH - Dizocilpine Maleate/pharmacology MH - Dopamine Antagonists/pharmacology MH - Early Growth Response Protein 1 MH - Excitatory Amino Acid Antagonists/pharmacology MH - Fluorobenzenes/pharmacology MH - Hallucinogens/*pharmacology MH - *Immediate-Early Proteins MH - Immunohistochemistry MH - In Situ Hybridization MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Paroxetine/pharmacology MH - Phenols/pharmacology MH - RNA, Messenger/*biosynthesis MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, Dopamine D1/antagonists & inhibitors MH - Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors MH - Serotonin Antagonists/pharmacology MH - Selective Serotonin Reuptake Inhibitors/pharmacology MH - Transcription Factors/*biosynthesis EDAT- 2000/08/26 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/08/26 11:00 PHST- 2000/08/26 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/08/26 11:00 [entrez] AID - S0014299900005215 [pii] AID - 10.1016/s0014-2999(00)00521-5 [doi] PST - ppublish SO - Eur J Pharmacol. 2000 Aug 25;402(3):215-22. doi: 10.1016/s0014-2999(00)00521-5.