PMID- 37759895 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231003 IS - 2076-3425 (Print) IS - 2076-3425 (Electronic) IS - 2076-3425 (Linking) VI - 13 IP - 9 DP - 2023 Sep 7 TI - Effects of Serial Polydrug Use on the Rewarding and Aversive Effects of the Novel Synthetic Cathinone Eutylone. LID - 10.3390/brainsci13091294 [doi] LID - 1294 AB - BACKGROUND: As individual synthetic cathinones become scheduled and regulated by the Drug Enforcement Administration (DEA), new ones regularly are produced and distributed. One such compound is eutylone, a novel third-generation synthetic cathinone whose affective properties (and abuse potential) are largely unknown. The following experiments begin to characterize these effects and how they may be impacted by drug history (a factor affecting reward/aversion for other drugs of abuse). METHODS: Eutylone was assessed for its ability to induce conditioned taste avoidance (CTA; aversive effect) and conditioned place preference (CPP; rewarding effect) and their relationship (Experiment 1). Following this, the effects of exposure to cocaine or 3,4-methylenedioxymethamphetamine [MDMA] on eutylone's affective properties were investigated (Experiment 2). RESULTS: Eutylone produced dose-dependent CTA and CPP (Experiment 1), and these endpoints were unrelated. Pre-exposure to cocaine and MDMA differentially impacted taste avoidance induced by eutylone (MDMA > cocaine) and did not impact eutylone-induced place preference. CONCLUSIONS: These data indicate that eutylone, like other synthetic cathinones, has co-occurring, independent rewarding and aversive effects that may contribute to its abuse potential and that these effects are differentially impacted by drug history. Although these studies begin the characterization of eutylone, future studies should examine the impact of other factors on eutylone's affective properties and its eventual reinforcing effects (i.e., intravenous self-administration [IVSA]) to predict its use and abuse liability. FAU - Manke, Hayley N AU - Manke HN AUID- ORCID: 0000-0002-8889-957X AD - Psychopharmacology Laboratory, Center for Neuroscience and Behavior, Department of Neuroscience, American University, 4400 Massachusetts Ave, NW, Washington, DC 20016, USA. FAU - Nunn, Samuel S AU - Nunn SS AUID- ORCID: 0009-0009-1978-2480 AD - Psychopharmacology Laboratory, Center for Neuroscience and Behavior, Department of Neuroscience, American University, 4400 Massachusetts Ave, NW, Washington, DC 20016, USA. FAU - Sulima, Agnieszka AU - Sulima A AD - Drug Design and Synthesis Section, National Institute on Drug Abuse (NIDA), National Institute on Alcohol Abuse and Alcoholism (NIAAA), Bethesda, MD 20892, USA. FAU - Rice, Kenner C AU - Rice KC AUID- ORCID: 0000-0002-1147-9147 AD - Drug Design and Synthesis Section, National Institute on Drug Abuse (NIDA), National Institute on Alcohol Abuse and Alcoholism (NIAAA), Bethesda, MD 20892, USA. FAU - Riley, Anthony L AU - Riley AL AD - Psychopharmacology Laboratory, Center for Neuroscience and Behavior, Department of Neuroscience, American University, 4400 Massachusetts Ave, NW, Washington, DC 20016, USA. LA - eng GR - N/A/Andrew Mellon Foundation/ GR - N/A/American University College of Arts and Sciences/ PT - Journal Article DEP - 20230907 PL - Switzerland TA - Brain Sci JT - Brain sciences JID - 101598646 PMC - PMC10526358 OTO - NOTNLM OT - MDMA OT - cocaine OT - drug history OT - eutylone OT - place preference OT - taste avoidance COIS- The authors declare no conflict of interest. EDAT- 2023/09/28 06:42 MHDA- 2023/09/28 06:43 PMCR- 2023/09/07 CRDT- 2023/09/28 01:03 PHST- 2023/08/02 00:00 [received] PHST- 2023/08/31 00:00 [revised] PHST- 2023/09/02 00:00 [accepted] PHST- 2023/09/28 06:43 [medline] PHST- 2023/09/28 06:42 [pubmed] PHST- 2023/09/28 01:03 [entrez] PHST- 2023/09/07 00:00 [pmc-release] AID - brainsci13091294 [pii] AID - brainsci-13-01294 [pii] AID - 10.3390/brainsci13091294 [doi] PST - epublish SO - Brain Sci. 2023 Sep 7;13(9):1294. doi: 10.3390/brainsci13091294.