PMID- 22716128 OWN - NLM STAT- MEDLINE DCOM- 20130423 LR - 20211021 IS - 1744-9081 (Electronic) IS - 1744-9081 (Linking) VI - 8 DP - 2012 Jun 20 TI - Effect of intermittent exposure to ethanol and MDMA during adolescence on learning and memory in adult mice. PG - 32 LID - 10.1186/1744-9081-8-32 [doi] AB - BACKGROUND: Heavy binge drinking is increasingly frequent among adolescents, and consumption of 3,4-methylenedioxymethamphetamine (MDMA) is often combined with ethanol (EtOH). The long-lasting effects of intermittent exposure to EtOH and MDMA during adolescence on learning and memory were evaluated in adult mice using the Hebb-Williams maze. METHODS: Adolescent OF1 mice were exposed to EtOH (1.25 g/kg) on two consecutive days at 48-h intervals over a 14-day period (from PD 29 to 42). MDMA (10 or 20 mg/kg) was injected twice daily at 4-h intervals over two consecutive days, and this schedule was repeated six days later (PD 33, 34, 41 and 42), resulting in a total of eight injections. Animals were initiated in the Hebb-Williams maze on PND 64. The concentration of brain monoamines in the striatum and hippocampus was then measured. RESULTS: At the doses employed, both EtOH and MDMA, administered alone or together, impaired learning in the Hebb-Williams maze, as treated animals required more time to reach the goal than their saline-treated counterparts. The groups treated during adolescence with EtOH, alone or plus MDMA, also presented longer latency scores and needed more trials to reach the acquisition criterion score. MDMA induced a decrease in striatal DA concentration, an effect that was augmented by the co-administration of EtOH. All the treatment groups displayed an imbalance in the interaction DA/serotonin. CONCLUSIONS: The present findings indicate that the developing brain is highly vulnerable to the damaging effects of EtOH and/or MDMA, since mice receiving these drugs in a binge pattern during adolescence exhibit impaired learning and memory in adulthood. FAU - Vidal-Infer, Antonio AU - Vidal-Infer A AD - Unidad de Investigacion Psicobiologia de las Drogodependencias, Departamento de Psicobiologia, Facultad de Psicologia, Universitat de Valencia, Avda, Blasco Ibanez 21, 46010, Valencia, Spain. FAU - Aguilar, Maria A AU - Aguilar MA FAU - Minarro, Jose AU - Minarro J FAU - Rodriguez-Arias, Marta AU - Rodriguez-Arias M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120620 PL - England TA - Behav Brain Funct JT - Behavioral and brain functions : BBF JID - 101245751 RN - 0 (Serotonin Agents) RN - 102-32-9 (3,4-Dihydroxyphenylacetic Acid) RN - 333DO1RDJY (Serotonin) RN - 3K9958V90M (Ethanol) RN - 54-16-0 (Hydroxyindoleacetic Acid) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - VTD58H1Z2X (Dopamine) SB - IM MH - 3,4-Dihydroxyphenylacetic Acid/metabolism MH - Animals MH - Behavior, Animal/drug effects MH - Corpus Striatum/drug effects/metabolism MH - Dopamine/metabolism MH - Ethanol/*pharmacology MH - Hippocampus/drug effects/metabolism MH - Hydroxyindoleacetic Acid/metabolism MH - Male MH - Maze Learning/*drug effects MH - Memory/*drug effects MH - Mice MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Serotonin/metabolism MH - Serotonin Agents/*pharmacology PMC - PMC3542061 EDAT- 2012/06/22 06:00 MHDA- 2013/04/24 06:00 PMCR- 2012/06/20 CRDT- 2012/06/22 06:00 PHST- 2011/12/20 00:00 [received] PHST- 2012/05/28 00:00 [accepted] PHST- 2012/06/22 06:00 [entrez] PHST- 2012/06/22 06:00 [pubmed] PHST- 2013/04/24 06:00 [medline] PHST- 2012/06/20 00:00 [pmc-release] AID - 1744-9081-8-32 [pii] AID - 10.1186/1744-9081-8-32 [doi] PST - epublish SO - Behav Brain Funct. 2012 Jun 20;8:32. doi: 10.1186/1744-9081-8-32.