PMID- 27725273 OWN - NLM STAT- MEDLINE DCOM- 20170831 LR - 20180409 IS - 1873-5177 (Electronic) IS - 0091-3057 (Linking) VI - 150-151 DP - 2016 Nov-Dec TI - MDMA ('Ecstasy'), oxytocin and vasopressin modulate social preference in rats: A role for handling and oxytocin receptors. PG - 115-123 LID - S0091-3057(16)30167-8 [pii] LID - 10.1016/j.pbb.2016.10.002 [doi] AB - In laboratory rats, peripheral administration of the neuropeptides oxytocin (OT) and vasopressin (AVP) induces similar prosocial effects (i.e. increased adjacent lying) to the party drug 3,4-methylenedioxymethamphetamine (MDMA), which are sensitive to vasopressin V(1A) receptor (V(1A)R) antagonism. Here, we employed a social preference paradigm to further compare the prosocial effects of OT, AVP and MDMA. We also investigated the possible involvement of the V(1A)R and oxytocin receptor (OTR) in rodent social preference. The social preference paradigm measures investigation times towards an empty wire cage (presented for 4min) followed by an identical cage containing a novel rat (also presented for 4min). Social preference is defined as greater investigation time towards the inhabited cage than the empty cage. Results indicated that well-handled rats exhibited no social preference at baseline, while intraperitoneally injected MDMA (5mg/kg), OT (0.5mg/kg) and AVP (0.005mg/kg) increased social preference. However, this effect was primarily due to reduced investigation of the empty cage. In contrast, rats that received minimal prior handling displayed a social preference at baseline, while MDMA (5mg/kg), OT (0.5mg/kg) and AVP (0.005mg/kg) reduced investigation times towards both the empty and inhabited cages. Lower doses of MDMA, OT and AVP were ineffective. The OTR antagonist Compound 25 (C25, 5mg/kg), but not the V(1A)R antagonist SR49059 (1mg/kg), reduced the baseline social preference seen in minimally-handled rats and prevented the social preference induced by OT and AVP (but not MDMA) in well-handled rats. Overall, these results further confirm prosocial actions of MDMA, OT and AVP, which are dependent on handling history. These findings also indicate that social preference is sensitive to OTR rather than V(1A)R modulation. CI - Copyright A(c) 2016 Elsevier Inc. All rights reserved. FAU - Ramos, Linnet AU - Ramos L AD - School of Psychology, Brennan MacCallum Building, University of Sydney, NSW 2006, Australia. FAU - Hicks, Callum AU - Hicks C AD - School of Psychology, Brennan MacCallum Building, University of Sydney, NSW 2006, Australia. FAU - Caminer, Alex AU - Caminer A AD - School of Psychology, Brennan MacCallum Building, University of Sydney, NSW 2006, Australia. FAU - Couto, Kalliu AU - Couto K AD - School of Psychology, Brennan MacCallum Building, University of Sydney, NSW 2006, Australia. FAU - Narlawar, Rajeshwar AU - Narlawar R AD - School of Chemistry, University of Sydney, NSW 2006, Australia. FAU - Kassiou, Michael AU - Kassiou M AD - School of Chemistry, University of Sydney, NSW 2006, Australia. FAU - McGregor, Iain S AU - McGregor IS AD - School of Psychology, Brennan MacCallum Building, University of Sydney, NSW 2006, Australia. Electronic address: iain.mcgregor@sydney.edu.au. LA - eng PT - Journal Article DEP - 20161007 PL - United States TA - Pharmacol Biochem Behav JT - Pharmacology, biochemistry, and behavior JID - 0367050 RN - 0 (Indoles) RN - 0 (Pyrrolidines) RN - 0 (Receptors, Oxytocin) RN - 0 (Receptors, Vasopressin) RN - 11000-17-2 (Vasopressins) RN - 50-56-6 (Oxytocin) RN - C1GL8G6G0O (relcovaptan) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animal Husbandry MH - Animals MH - Indoles/pharmacology MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Oxytocin/*pharmacology MH - Pyrrolidines/pharmacology MH - Rats MH - Rats, Long-Evans MH - Receptors, Oxytocin/*physiology MH - Receptors, Vasopressin/physiology MH - *Social Behavior MH - Vasopressins/*pharmacology OTO - NOTNLM OT - Compound 25 OT - Handling OT - MDMA OT - Oxytocin OT - SR49059 OT - Social preference OT - Vasopressin EDAT- 2016/10/26 06:00 MHDA- 2017/09/01 06:00 CRDT- 2016/11/06 06:00 PHST- 2013/09/06 00:00 [received] PHST- 2016/09/15 00:00 [revised] PHST- 2016/10/05 00:00 [accepted] PHST- 2016/10/26 06:00 [pubmed] PHST- 2017/09/01 06:00 [medline] PHST- 2016/11/06 06:00 [entrez] AID - S0091-3057(16)30167-8 [pii] AID - 10.1016/j.pbb.2016.10.002 [doi] PST - ppublish SO - Pharmacol Biochem Behav. 2016 Nov-Dec;150-151:115-123. doi: 10.1016/j.pbb.2016.10.002. Epub 2016 Oct 7.