PMID- 26241170 OWN - NLM STAT- MEDLINE DCOM- 20160614 LR - 20181113 IS - 1872-7549 (Electronic) IS - 0166-4328 (Print) IS - 0166-4328 (Linking) VI - 294 DP - 2015 Nov 1 TI - Yohimbine reinstates extinguished 3,4-methylenedioxymethamphetamine (MDMA; ecstasy) seeking in rats with prior exposure to chronic yohimbine. PG - 1-6 LID - S0166-4328(15)30127-3 [pii] LID - 10.1016/j.bbr.2015.07.056 [doi] AB - Although exposure to acute stress has been shown to reinstate extinguished responding for a wide variety of drugs, no studies have investigated stress-induced reinstatement in animals with a history of 3,4-methylenedioxymethamphetamine (MDMA; ecstasy) self-administration. Thus, rats were trained to press a lever for MDMA (0.50 mg/kg/infusion) in daily sessions, and lever pressing was subsequently extinguished in the absence of MDMA and conditioned cues (light and tone). We then tested the ability of acute yohimbine (2.0 mg/kg), a pharmacological stressor, to reinstate lever-pressing under extinction conditions. Additionally, to model chronic stress, some rats were injected daily with yohimbine (5.0 mg/kg x 10 days) prior to reinstatement tests. To assess dopaminergic involvement, chronic yohimbine injections were combined with injections of SCH-23390 (0.0 or 10.0 mug/kg), a dopamine D1-like receptor antagonist. In a separate experiment, rats with a history of food self-administration were treated and tested in the same way. Results showed that acute yohimbine injections reinstated extinguished MDMA and food seeking, but only in rats with a history of chronic yohimbine exposure. Co-administration of SCH-23390 with chronic yohimbine injections prevented the potentiation of subsequent food seeking, but not MDMA seeking. These results suggest that abstinent MDMA users who also are exposed to chronic stress may be at increased risk for future relapse, and also that the effects of chronic stress on relapse may be mediated by different mechanisms depending on one's drug use history. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Ball, Kevin T AU - Ball KT AD - Department of Psychology, Bloomsburg University of Pennsylvania, 400 E. 2nd St., Bloomsburg, PA 17815, USA. Electronic address: kball@bloomu.edu. FAU - Jarsocrak, Hanna AU - Jarsocrak H AD - Department of Psychology, Bloomsburg University of Pennsylvania, 400 E. 2nd St., Bloomsburg, PA 17815, USA. FAU - Hyacinthe, Johanna AU - Hyacinthe J AD - Department of Psychology, Bloomsburg University of Pennsylvania, 400 E. 2nd St., Bloomsburg, PA 17815, USA. FAU - Lambert, Justina AU - Lambert J AD - Department of Psychology, Bloomsburg University of Pennsylvania, 400 E. 2nd St., Bloomsburg, PA 17815, USA. FAU - Lockowitz, James AU - Lockowitz J AD - Department of Psychology, Bloomsburg University of Pennsylvania, 400 E. 2nd St., Bloomsburg, PA 17815, USA. FAU - Schrock, Jordan AU - Schrock J AD - Department of Psychology, Bloomsburg University of Pennsylvania, 400 E. 2nd St., Bloomsburg, PA 17815, USA. LA - eng GR - R15 DA035432/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20150801 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Adrenergic alpha-2 Receptor Antagonists) RN - 0 (Benzazepines) RN - 0 (Dopamine Antagonists) RN - 0 (Hallucinogens) RN - 0 (SCH 23390) RN - 2Y49VWD90Q (Yohimbine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Adrenergic alpha-2 Receptor Antagonists/*pharmacology MH - Animals MH - Behavior, Addictive/metabolism MH - Benzazepines/pharmacology MH - Conditioning, Operant/drug effects/physiology MH - Disease Models, Animal MH - Dopamine Antagonists/pharmacology MH - Dose-Response Relationship, Drug MH - Drug-Seeking Behavior/*drug effects/physiology MH - Extinction, Psychological/drug effects/physiology MH - Feeding Behavior/drug effects/physiology MH - Food MH - Hallucinogens/*administration & dosage MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*administration & dosage MH - Random Allocation MH - Rats, Sprague-Dawley MH - Self Administration MH - Stress, Psychological/physiopathology MH - Yohimbine/*pharmacology PMC - PMC4564319 MID - NIHMS714092 OTO - NOTNLM OT - Dopamine OT - MDMA OT - Reinstatement OT - SCH-23390 OT - Stress OT - Yohimbine EDAT- 2015/08/05 06:00 MHDA- 2016/06/15 06:00 PMCR- 2016/11/01 CRDT- 2015/08/05 06:00 PHST- 2015/06/29 00:00 [received] PHST- 2015/07/21 00:00 [revised] PHST- 2015/07/27 00:00 [accepted] PHST- 2015/08/05 06:00 [entrez] PHST- 2015/08/05 06:00 [pubmed] PHST- 2016/06/15 06:00 [medline] PHST- 2016/11/01 00:00 [pmc-release] AID - S0166-4328(15)30127-3 [pii] AID - 10.1016/j.bbr.2015.07.056 [doi] PST - ppublish SO - Behav Brain Res. 2015 Nov 1;294:1-6. doi: 10.1016/j.bbr.2015.07.056. Epub 2015 Aug 1.