PMID- 28537942 OWN - NLM STAT- MEDLINE DCOM- 20180126 LR - 20231213 IS - 1473-5849 (Electronic) IS - 0955-8810 (Print) IS - 0955-8810 (Linking) VI - 28 IP - 5 DP - 2017 Aug TI - Locomotor and discriminative stimulus effects of four novel hallucinogens in rodents. PG - 375-385 LID - 10.1097/FBP.0000000000000309 [doi] AB - There has been increasing use of novel synthetic hallucinogenic compounds, 2-(4-bromo-2,5-dimethoxyphenyl)-N-(2-methoxybenzyl)ethanamine hydrochloride (25B-NBOMe), 2-(4-chloro-2,5-dimethoxyphenyl)-N-(2-methoxybenzyl)ethanamine hydrochloride (25C-NBOMe), 2-(4-iodo-2,5-dimethoxyphenyl)-N-(2-methoxybenzyl)ethanamine hydrochloride (25I-NBOMe), and N,N-diallyl-5-methoxy tryptamine (5-MeO-DALT), which have been associated with severe toxicities. These four compounds were tested for discriminative stimulus effects similar to a prototypical hallucinogen (-)-2,5-dimethoxy-4-methylamphetamine (DOM) and the entactogen (+/-)-3,4-methylenedioxymethamphetamine (MDMA). Locomotor activity in mice was tested to obtain dose range and time-course information. 25B-NBOMe, 25C-NBOMe, and 25I-NBOMe decreased locomotor activity. 5-MeO-DALT dose dependently increased locomotor activity, with a peak at 10 mg/kg. A higher dose (25 mg/kg) suppressed activity. 25B-NBOMe fully substituted (>/=80%) in both DOM-trained and MDMA-trained rats at 0.5 mg/kg. However, higher doses produced much lower levels of drug-appropriate responding in both DOM-trained and MDMA-trained rats. 25C-NBOMe fully substituted in DOM-trained rats, but produced only 67% drug-appropriate responding in MDMA-trained rats at doses that suppressed responding. 25I-NBOMe produced 74-78% drug-appropriate responding in DOM-trained and MDMA-trained rats at doses that suppressed responding. 5-MeO-DALT fully substituted for DOM, but produced few or no MDMA-like effects. All of the compounds, except 25I-NBOMe, fully substituted for DOM, whereas only 25B-NBOMe fully substituted for MDMA. However, the failure of 25I-NBOMe to fully substitute for either MDMA or DOM was more likely because of its substantial rate-depressant effects than weak discriminative stimulus effects. All of the compounds are likely to attract recreational users for their hallucinogenic properties, but probably of much less interest as substitutes for MDMA. Although no acute adverse effects were observed at the doses tested, the substantial toxicities reported in humans, coupled with the high likelihood for illicit use, suggests that these compounds have the same potential for abuse as other, currently scheduled compounds. FAU - Gatch, Michael B AU - Gatch MB AD - Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, Texas, USA. FAU - Dolan, Sean B AU - Dolan SB FAU - Forster, Michael J AU - Forster MJ LA - eng GR - HHSN271201300001C/DA/NIDA NIH HHS/United States GR - T32 AG020494/AG/NIA NIH HHS/United States PT - Journal Article PL - England TA - Behav Pharmacol JT - Behavioural pharmacology JID - 9013016 RN - 0 (Anisoles) RN - 0 (Benzylamines) RN - 0 (Dimethoxyphenylethylamine) RN - 0 (Hallucinogens) RN - 0 (Phenethylamines) RN - 15588-95-1 (DOM 2,5-Dimethoxy-4-Methylamphetamine) RN - 547KGL06IP (2-(4-iodo-2,5-dimethoxyphenyl)-N-(2-methoxybenzyl)ethanamine) RN - 9FGW3C260N (2-(4-chloro-2,5-dimethoxyphenyl)-N-((2-methoxyphenyl)methyl)ethanamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - S6NAA81PHK (2-(4-bromo-2,5-dimethoxyphenyl)-N-((2-methoxyphenyl)methyl)ethanamine) SB - IM MH - DOM 2,5-Dimethoxy-4-Methylamphetamine/pharmacology MH - Animals MH - Anisoles/metabolism/*pharmacology MH - Benzylamines/metabolism/*pharmacology MH - Dimethoxyphenylethylamine/*analogs & derivatives/metabolism/pharmacology MH - Hallucinogens/metabolism/pharmacology MH - Locomotion/drug effects MH - Male MH - Mice MH - N-Methyl-3,4-methylenedioxyamphetamine/pharmacology MH - Phenethylamines/metabolism/*pharmacology MH - Rats MH - Rats, Sprague-Dawley PMC - PMC5498282 MID - NIHMS867776 EDAT- 2017/05/26 06:00 MHDA- 2018/01/27 06:00 PMCR- 2018/08/01 CRDT- 2017/05/25 06:00 PHST- 2017/05/26 06:00 [pubmed] PHST- 2018/01/27 06:00 [medline] PHST- 2017/05/25 06:00 [entrez] PHST- 2018/08/01 00:00 [pmc-release] AID - 10.1097/FBP.0000000000000309 [doi] PST - ppublish SO - Behav Pharmacol. 2017 Aug;28(5):375-385. doi: 10.1097/FBP.0000000000000309.