PMID- 29909719 OWN - NLM STAT- MEDLINE DCOM- 20191031 LR - 20200923 IS - 1461-7285 (Electronic) IS - 0269-8811 (Print) IS - 0269-8811 (Linking) VI - 32 IP - 7 DP - 2018 Jul TI - Impure but not inactive: Behavioral pharmacology of dibenzylpiperazine, a common by-product of benzylpiperazine synthesis. PG - 802-810 LID - 10.1177/0269881118780613 [doi] AB - BACKGROUND: Substituted piperazines comprise a substantial proportion of the novel psychoactive substance market. Among the most widely abused piperazine compounds are meta-chlorophenylpiperazine (mCPP), tri-fluoromethylphenylpiperazine (TFMPP), and, especially, benzylpiperazine (BZP), which are commonly incorporated, either alone or in combination, in illicit "party pills" or "ecstasy" formulations. Illicit synthesis of BZP often results in production of an impure by-product dibenzylpiperazine (DBZP), which frequently appears alongside BZP in these formulations; however, despite its ubiquity, little information exists regarding the abuse liability of DBZP. AIMS: The current study aimed to evaluate the abuse-related behavioral pharmacology of DBZP. METHODS: DBZP, mCPP, and TFMPP were tested in parallel in mice in locomotor activity and conditioned place preference assays, and in a drug discrimination assay with rats trained to discriminate either methamphetamine, cocaine, (+/-)-3,4-methylenedioxymethamphetamine (MDMA), or -2,5-dimethoxy-4-methylamphetamine(DOM). RESULTS: Each of the compounds tested produced dose-dependent decreases in locomotor activity. DBZP substituted fully for methamphetamine, produced subthreshold drug-appropriate responding for cocaine and MDMA, and failed to substitute for DOM. Conversely, TFMPP and mCPP only produced subthreshold drug-appropriate responding for methamphetamine and MDMA, respectively, and both compounds failed to substitute for cocaine or DOM. None of the compounds tested produced a place preference. DBZP produced convulsions in rats at the highest dose tested. CONCLUSIONS: These data indicate that DBZP is more similar to BZP, albeit with lower potency and efficacy, than its serotonergic piperazine counterparts, and is a behaviorally-active compound with some abuse liability and potential for adverse health effects. FAU - Dolan, Sean B AU - Dolan SB AD - Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, USA. FAU - Shetty, Ritu A AU - Shetty RA AUID- ORCID: 0000-0003-4240-6423 AD - Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, USA. FAU - Forster, Michael J AU - Forster MJ AD - Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, USA. FAU - Gatch, Michael B AU - Gatch MB AUID- ORCID: 0000-0003-3474-211X AD - Pharmacology and Neuroscience, University of North Texas Health Science Center at Fort Worth, USA. LA - eng GR - HHSN271200700014C/DA/NIDA NIH HHS/United States GR - T32 AG020494/AG/NIA NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20180618 PL - United States TA - J Psychopharmacol JT - Journal of psychopharmacology (Oxford, England) JID - 8907828 RN - 0 (Piperazines) RN - 0 (Psychotropic Drugs) RN - 25R3ONU51C (1-(3-trifluoromethylphenyl)piperazine) RN - 616774W5JF (N,N'-dibenzylpiperazine) RN - REY0CNO998 (1-(3-chlorophenyl)piperazine) SB - IM MH - Animals MH - Conditioning, Classical/drug effects MH - Discrimination Learning/drug effects MH - Dose-Response Relationship, Drug MH - Locomotion/drug effects MH - Male MH - Mice MH - Piperazines/*administration & dosage/pharmacology MH - Psychotropic Drugs/*administration & dosage/pharmacology MH - Rats MH - Rats, Sprague-Dawley PMC - PMC7504971 MID - NIHMS1628984 OTO - NOTNLM OT - Abuse liability OT - DBZP OT - conditioned place preference OT - drug discrimination COIS- Declaration of conflicting interests The authors declare that there is no conflict of interest. EDAT- 2018/06/19 06:00 MHDA- 2019/11/02 06:00 PMCR- 2020/09/21 CRDT- 2018/06/19 06:00 PHST- 2018/06/19 06:00 [pubmed] PHST- 2019/11/02 06:00 [medline] PHST- 2018/06/19 06:00 [entrez] PHST- 2020/09/21 00:00 [pmc-release] AID - 10.1177/0269881118780613 [doi] PST - ppublish SO - J Psychopharmacol. 2018 Jul;32(7):802-810. doi: 10.1177/0269881118780613. Epub 2018 Jun 18.