PMID- 23521165 OWN - NLM STAT- MEDLINE DCOM- 20130719 LR - 20131121 IS - 1471-4159 (Electronic) IS - 0022-3042 (Linking) VI - 125 IP - 5 DP - 2013 Jun TI - Memory impairment and hippocampus specific protein oxidation induced by ethanol intake and 3, 4-methylenedioxymethamphetamine (MDMA) in mice. PG - 736-46 LID - 10.1111/jnc.12247 [doi] AB - Ethanol and 3, 4-Methylenedioxymethamphetamine (MDMA) are popular recreational drugs widely abused by adolescents that may induce neurotoxic processes associated with behavioural alterations. Adolescent CD1 mice were subjected to ethanol intake using the drinking in the dark (DID) procedure, acute MDMA or a combination. Considering that both drugs of abuse cause oxidative stress in the brain, protein oxidative damage in different brain areas was analysed 72 h after treatment using a proteomic approach. Damage to specific proteins in treated animals was significant in the hippocampus but not in the prefrontal cortex. The damaged hippocampus proteins were then identified by mass spectrometry, revealing their involvement in energy metabolism, structural function, axonal outgrowth and stability, and neurotransmitter release. Mice treated with MDMA displayed higher oxidative damage than ethanol-treated mice. To determine whether this oxidative damage was affecting hippocampus activity, declarative memory was evaluated at 72 h after treatment using the object recognition assay and the radial arm maze. Although acquisition in the radial arm maze was not impaired by ethanol intake, MDMA treatment impaired long-term memory in both tests. Therefore, oxidative damage to specific proteins observed under MDMA treatment affects important cellular function on the hippocampus that may contribute to declarative memory deficits. CI - (c) 2013 International Society for Neurochemistry. FAU - Ros-Simo, Clara AU - Ros-Simo C AD - Grup de Recerca en Neurobiologia del Comportament GReNeC, Departament de Ciencies Experimentals i de la Salut, Universitat Pompeu Fabra, Parc de Recerca Biomedica de Barcelona, 08003 Barcelona, Spain. FAU - Moscoso-Castro, Maria AU - Moscoso-Castro M FAU - Ruiz-Medina, Jessica AU - Ruiz-Medina J FAU - Ros, Joaquim AU - Ros J FAU - Valverde, Olga AU - Valverde O LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130422 PL - England TA - J Neurochem JT - Journal of neurochemistry JID - 2985190R RN - 0 (Membrane Proteins) RN - 3K9958V90M (Ethanol) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Ethanol/*toxicity MH - Hippocampus/*drug effects/metabolism MH - Male MH - Maze Learning/drug effects/physiology MH - Membrane Proteins/metabolism MH - Memory Disorders/*chemically induced/metabolism MH - Mice MH - N-Methyl-3,4-methylenedioxyamphetamine/*toxicity MH - Oxidation-Reduction/drug effects MH - Oxidative Stress/*drug effects/physiology EDAT- 2013/03/26 06:00 MHDA- 2013/07/20 06:00 CRDT- 2013/03/26 06:00 PHST- 2013/01/14 00:00 [received] PHST- 2013/02/20 00:00 [revised] PHST- 2013/03/21 00:00 [accepted] PHST- 2013/03/26 06:00 [entrez] PHST- 2013/03/26 06:00 [pubmed] PHST- 2013/07/20 06:00 [medline] AID - 10.1111/jnc.12247 [doi] PST - ppublish SO - J Neurochem. 2013 Jun;125(5):736-46. doi: 10.1111/jnc.12247. Epub 2013 Apr 22.