PMID- 17387458 OWN - NLM STAT- MEDLINE DCOM- 20070906 LR - 20220716 IS - 0033-3158 (Print) IS - 0033-3158 (Linking) VI - 193 IP - 1 DP - 2007 Jul TI - MDMA attenuates THC withdrawal syndrome in mice. PG - 75-84 AB - INTRODUCTION: 3, 4-Methylenedioxymethamphetamine (MDMA) and cannabis are widely abused illicit drugs that are frequently consumed in combination. Interactions between these two drugs have been reported in several pharmacological responses observed in animals, such as body temperature, anxiety, cognition, and reward. However, the interaction between MDMA and cannabis in addictive processes such as physical dependence has not been elucidated yet. DISCUSSION: In this study, the effects of acute and chronic MDMA were evaluated on the behavioral manifestations of Delta(9)-tetrahydrocannabinol (THC) abstinence in mice. THC withdrawal syndrome was precipitated by injecting the cannabinoid antagonist rimonabant (10 mg/kg, i.p.) in mice chronically treated with THC and receiving MDMA (2.5, 5 and 10 mg/kg i.p.) or saline just before the withdrawal induction or chronically after the THC administration. RESULTS: Both chronic and acute MDMA decreased in a dose-dependent manner the severity of THC withdrawal. In vivo microdialysis experiments showed that acute MDMA (5 mg/kg, i.p.) administration increased extracellular serotonin levels in the prefrontal cortex, but not dopamine levels in the nucleus accumbens. Our results also indicate that the attenuation of THC abstinence symptoms was not due to a direct interaction between rimonabant and MDMA nor to the result of the locomotor stimulating effects of MDMA. CONCLUSION: The modulation of the cannabinoid withdrawal syndrome by acute or chronic MDMA suggests a possible mechanism to explain the associated consumption of these two drugs in humans. FAU - Tourino, Clara AU - Tourino C AD - Grup de Recerca de Neurobiologia del Comportament, Departament de Ciencies Experimentals i de la Salut, Universitat Pompeu Fabra, PRBB, C/ Dr. Aiguader 80, 08003, Barcelona, Spain. FAU - Maldonado, Rafael AU - Maldonado R FAU - Valverde, Olga AU - Valverde O LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070327 PL - Germany TA - Psychopharmacology (Berl) JT - Psychopharmacology JID - 7608025 RN - 0 (Cannabinoid Receptor Antagonists) RN - 0 (Piperidines) RN - 0 (Pyrazoles) RN - 333DO1RDJY (Serotonin) RN - 7J8897W37S (Dronabinol) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - RML78EN3XE (Rimonabant) RN - VTD58H1Z2X (Dopamine) SB - IM MH - Animals MH - Brain/drug effects/metabolism MH - Cannabinoid Receptor Antagonists MH - Dopamine/metabolism MH - Dose-Response Relationship, Drug MH - Dronabinol/*adverse effects MH - Male MH - Mice MH - Mice, Inbred Strains MH - Motor Activity/drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/administration & dosage/*therapeutic use MH - Piperidines/pharmacology MH - Pyrazoles/pharmacology MH - Rimonabant MH - Serotonin/metabolism MH - Substance Withdrawal Syndrome/*drug therapy/physiopathology EDAT- 2007/03/28 09:00 MHDA- 2007/09/07 09:00 CRDT- 2007/03/28 09:00 PHST- 2006/09/29 00:00 [received] PHST- 2007/03/10 00:00 [accepted] PHST- 2007/03/28 09:00 [pubmed] PHST- 2007/09/07 09:00 [medline] PHST- 2007/03/28 09:00 [entrez] AID - 10.1007/s00213-007-0772-5 [doi] PST - ppublish SO - Psychopharmacology (Berl). 2007 Jul;193(1):75-84. doi: 10.1007/s00213-007-0772-5. Epub 2007 Mar 27.