PMID- 25050816 OWN - NLM STAT- MEDLINE DCOM- 20150331 LR - 20191210 IS - 1473-5849 (Electronic) IS - 0955-8810 (Linking) VI - 25 IP - 5-6 DP - 2014 Sep TI - Effects of acute social stress on the conditioned place preference induced by MDMA in adolescent and adult mice. PG - 532-46 LID - 10.1097/FBP.0000000000000065 [doi] AB - Exposure to social defeat stress increases the rewarding effects of psychostimulants in animal models, but its effect on 3,4-methylenedioxymethylamphetamine (MDMA) reward has received little attention. In the present study, we evaluated the influence of social defeat on the rewarding effects of MDMA in adolescent [postnatal day (PND) 29-40] and adult (PND 50-61) male mice using the conditioned place preference paradigm. Experimental mice were exposed to social defeat in an agonistic encounter before each session of conditioning with 1.25 or 10 mg/kg of MDMA. The effects of social defeat on corticosterone levels and the motor or the anxiogenic effects of MDMA were also evaluated. Mice exposed to social defeat during adulthood did not show conditioned place preference after conditioning with either dose of MDMA. Conversely, social defeat did not affect the anxiogenic and motor effects of MDMA. Adult mice exposed to social defeat showed higher levels of corticosterone than their controls and adolescent mice. Social stress did not induce behavioural effects in adolescent mice. Our results show that stress induced by social defeat decreases the sensitivity of adult mice to the rewarding effects of MDMA. FAU - Garcia-Pardo, Maria P AU - Garcia-Pardo MP AD - Unit of Research Psychobiology of Drug Dependence, Department of Psychobiology, School of Psychology, University of Valencia, Valencia, Spain. FAU - Rodriguez-Arias, Marta AU - Rodriguez-Arias M FAU - Maldonado, Concepcion AU - Maldonado C FAU - Manzanedo, Carmen AU - Manzanedo C FAU - Minarro, Jose AU - Minarro J FAU - Aguilar, Maria A AU - Aguilar MA LA - eng PT - Journal Article PL - England TA - Behav Pharmacol JT - Behavioural pharmacology JID - 9013016 RN - 0 (Hallucinogens) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - W980KJ009P (Corticosterone) SB - IM MH - Aging/drug effects/physiology MH - Animals MH - Anxiety/chemically induced/physiopathology MH - *Conditioning, Psychological MH - Corticosterone/metabolism MH - Dominance-Subordination MH - Dose-Response Relationship, Drug MH - Hallucinogens/*pharmacology MH - Male MH - Mice MH - Motor Activity/drug effects/physiology MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Reward MH - *Social Behavior MH - Space Perception/*drug effects/physiology MH - Stress, Psychological/*physiopathology EDAT- 2014/07/23 06:00 MHDA- 2015/04/01 06:00 CRDT- 2014/07/23 06:00 PHST- 2014/07/23 06:00 [entrez] PHST- 2014/07/23 06:00 [pubmed] PHST- 2015/04/01 06:00 [medline] AID - 10.1097/FBP.0000000000000065 [doi] PST - ppublish SO - Behav Pharmacol. 2014 Sep;25(5-6):532-46. doi: 10.1097/FBP.0000000000000065.