PMID- 26840064 OWN - NLM STAT- MEDLINE DCOM- 20160712 LR - 20240327 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 11 IP - 2 DP - 2016 TI - Effects of MDMA Injections on the Behavior of Socially-Housed Long-Tailed Macaques (Macaca fascicularis). PG - e0147136 LID - 10.1371/journal.pone.0147136 [doi] LID - e0147136 AB - 3,4-methylenedioxy-N-methyl amphetamine (MDMA) is one of the few known molecules to increase human and rodent prosocial behaviors. However, this effect has never been assessed on the social behavior of non-human primates. In our study, we subcutaneously injected three different doses of MDMA (1.0, 1.5 or 2.0mg/kg) to a group of three, socially housed, young male long-tailed macaques. More than 200 hours of behavioral data were recorded, during 68 behavioral sessions, by an automatic color-based video device that tracked the 3D positions of each animal and of a toy. This data was then categorized into 5 exclusive behaviors (resting, locomotion, foraging, social contact and object play). In addition, received and given social grooming was manually scored. Results show several significant dose-dependent behavioral effects. At 1.5mg/kg only, MDMA induces a significant increase in social grooming behavior, thus confirming the prosocial effect of MDMA in macaques. Additionally, at 1.5 and 2.0 mg/kg MDMA injection substantially decreases foraging behavior, which is consistent with the known anorexigenic effect of this compound. Furthermore, at 2.0 mg/kg MDMA injection induces an increase in locomotor behavior, which is also in accordance with its known stimulant property. Interestingly, MDMA injected at 1.0mg/kg increases the rate of object play, which might be interpreted as a decrease of the inhibition to manipulate a unique object in presence of others, or, as an increase of the intrinsic motivation to manipulate this object. Together, our results support the effectiveness of MDMA to study the complex neurobiology of primates' social behaviors. FAU - Ballesta, Sebastien AU - Ballesta S AD - Centre de Neuroscience Cognitive, Centre National de la Recherche Scientifique, 69675 Bron, France. AD - Departement de Biologie Humaine, Universite Lyon 1, 69622 Villeurbanne, France. FAU - Reymond, Gilles AU - Reymond G AD - Centre de Neuroscience Cognitive, Centre National de la Recherche Scientifique, 69675 Bron, France. AD - Departement de Biologie Humaine, Universite Lyon 1, 69622 Villeurbanne, France. FAU - Pozzobon, Matthieu AU - Pozzobon M AD - Centre de Neuroscience Cognitive, Centre National de la Recherche Scientifique, 69675 Bron, France. AD - Departement de Biologie Humaine, Universite Lyon 1, 69622 Villeurbanne, France. FAU - Duhamel, Jean-Rene AU - Duhamel JR AD - Centre de Neuroscience Cognitive, Centre National de la Recherche Scientifique, 69675 Bron, France. AD - Departement de Biologie Humaine, Universite Lyon 1, 69622 Villeurbanne, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160203 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Behavior, Animal/*drug effects MH - Injections MH - *Macaca fascicularis MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*administration & dosage MH - *Social Behavior PMC - PMC4739726 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2016/02/04 06:00 MHDA- 2016/07/13 06:00 PMCR- 2016/02/03 CRDT- 2016/02/04 06:00 PHST- 2015/06/16 00:00 [received] PHST- 2015/12/29 00:00 [accepted] PHST- 2016/02/04 06:00 [entrez] PHST- 2016/02/04 06:00 [pubmed] PHST- 2016/07/13 06:00 [medline] PHST- 2016/02/03 00:00 [pmc-release] AID - PONE-D-15-19082 [pii] AID - 10.1371/journal.pone.0147136 [doi] PST - epublish SO - PLoS One. 2016 Feb 3;11(2):e0147136. doi: 10.1371/journal.pone.0147136. eCollection 2016.