PMID- 20227452 OWN - NLM STAT- MEDLINE DCOM- 20101129 LR - 20151119 IS - 1872-9754 (Electronic) IS - 0197-0186 (Linking) VI - 56 IP - 8 DP - 2010 Jul TI - A long hangover from party drugs: residual proteomic changes in the hippocampus of rats 8 weeks after gamma-hydroxybutyrate (GHB), 3,4-methylenedioxymethamphetamine (MDMA) or their combination. PG - 871-7 LID - 10.1016/j.neuint.2010.03.002 [doi] AB - 3,4-Methylenedioxymethamphetamine (MDMA) and gamma-hydroxybutyrate (GHB) are popular party drugs that are used for their euphoric and prosocial effects, and sometimes in combination. Both drugs increase markers of oxidative stress in the hippocampus and can cause lasting impairments in hippocampal-dependent forms of memory. To gain further information on the biochemical mechanisms underlying these effects, the current study examined residual changes in hippocampal protein expression measured 8 weeks after chronic administration of GHB (500mg/kg), MDMA (5mg/kg) or their combination (GHB/MDMA). The drugs were administered once a day for 10 days in an environment with an elevated ambient temperature of 28 degrees C. Results showed significant changes in protein expression, relative to controls, in all three groups: MDMA and GHB given alone caused residual changes in 8 and 5 proteins respectively, while the GHB/MDMA combination significantly changed 6 proteins. The altered proteins had roles in neuroplasticity, neuroprotection, intracellular signalling and cytoskeletal function. The largest change (-4.3-fold) was seen in the MDMA group with the protein C-crk: a protein implicated in learning-related neuroplasticity. The second largest change (3.0-fold) was seen in the GHB group in Glutathione-S-transferase (GST), a protein that protects against oxidative stress. Two cytoskeletal proteins (Tubulin Folding Cofactor B and Tropomyosin-alpha-3 chain) and one plasticity related protein (Neuronal Pentraxin-1 NP1) were similarly changed in both the MDMA and the GHB groups, while two intracellular signalling proteins (alpha-soluble NSF-attachment protein and subunits of the V-type proton ATPase) were changed in both the MDMA/GHB and the MDMA groups. These results provide some insight into the molecular pathways possibly underlying the lasting cognitive deficits arising from GHB and/or MDMA use. CI - 2010. Published by Elsevier Ltd. FAU - van Nieuwenhuijzen, Petra S AU - van Nieuwenhuijzen PS AD - School of Psychology, University of Sydney, Camperdown, Sydney, NSW 2006, Australia. FAU - Kashem, Mohammed A AU - Kashem MA FAU - Matsumoto, Izuru AU - Matsumoto I FAU - Hunt, Glenn E AU - Hunt GE FAU - McGregor, Iain S AU - McGregor IS LA - eng PT - Journal Article DEP - 20100319 PL - England TA - Neurochem Int JT - Neurochemistry international JID - 8006959 RN - 0 (Nerve Tissue Proteins) RN - 0 (Pharmaceutical Vehicles) RN - 7G33012534 (Sodium Oxybate) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Blotting, Western MH - Drug Synergism MH - Electrophoresis, Gel, Two-Dimensional MH - Hippocampus/*drug effects/*metabolism/physiopathology MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/administration & dosage/*toxicity MH - Nerve Tissue Proteins/biosynthesis/*metabolism MH - Pharmaceutical Vehicles/administration & dosage MH - Proteomics/*methods MH - Rats MH - Rats, Wistar MH - Signal Transduction/drug effects/physiology MH - Sodium Oxybate/administration & dosage/*toxicity MH - Time Factors MH - Up-Regulation/drug effects EDAT- 2010/03/17 06:00 MHDA- 2010/12/14 06:00 CRDT- 2010/03/16 06:00 PHST- 2010/02/15 00:00 [received] PHST- 2010/03/05 00:00 [accepted] PHST- 2010/03/16 06:00 [entrez] PHST- 2010/03/17 06:00 [pubmed] PHST- 2010/12/14 06:00 [medline] AID - S0197-0186(10)00088-4 [pii] AID - 10.1016/j.neuint.2010.03.002 [doi] PST - ppublish SO - Neurochem Int. 2010 Jul;56(8):871-7. doi: 10.1016/j.neuint.2010.03.002. Epub 2010 Mar 19.