PMID- 25765500 OWN - NLM STAT- MEDLINE DCOM- 20160407 LR - 20240323 IS - 1476-5381 (Electronic) IS - 0007-1188 (Print) IS - 0007-1188 (Linking) VI - 172 IP - 13 DP - 2015 Jul TI - Pharmacological profile of novel psychoactive benzofurans. PG - 3412-25 LID - 10.1111/bph.13128 [doi] AB - BACKGROUND AND PURPOSE: Benzofurans are newly used psychoactive substances, but their pharmacology is unknown. The aim of the present study was to pharmacologically characterize benzofurans in vitro. EXPERIMENTAL APPROACH: We assessed the effects of the benzofurans 5-APB, 5-APDB, 6-APB, 6-APDB, 4-APB, 7-APB, 5-EAPB and 5-MAPDB and benzodifuran 2C-B-FLY on the human noradrenaline (NA), dopamine and 5-HT uptake transporters using HEK 293 cells that express the respective transporters. We also investigated the release of NA, dopamine and 5-HT from monoamine-preloaded cells, monoamine receptor-binding affinity and 5-HT2A and 5-HT2B receptor activation. KEY RESULTS: All of the benzofurans inhibited NA and 5-HT uptake more than dopamine uptake, similar to methylenedioxymethamphetamine (MDMA) and unlike methamphetamine. All of the benzofurans also released monoamines and interacted with trace amine-associated receptor 1 (TA1 receptor), similar to classic amphetamines. Most benzofurans were partial 5-HT2A receptor agonists similar to MDMA, but also 5-HT2B receptor agonists, unlike MDMA and methamphetamine. The benzodifuran 2C-B-FLY very potently interacted with 5-HT2 receptors and also bound to TA1 receptors. CONCLUSIONS AND IMPLICATIONS: Despite very similar structures, differences were found in the pharmacological profiles of different benzofurans and compared with their amphetamine analogues. Benzofurans acted as indirect monoamine agonists that interact with transporters similarly to MDMA. The benzofurans also interacted with 5-HT receptors. This pharmacological profile probably results in MDMA-like entactogenic psychoactive properties. However, benzofurans induce 5-HT2B receptor activation associated with heart valve fibrosis. The pharmacology of 2C-B-FLY indicates predominant hallucinogenic properties and a risk for vasoconstriction. CI - (c) 2015 The British Pharmacological Society. FAU - Rickli, Anna AU - Rickli A AD - Psychopharmacology Research, Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland. FAU - Kopf, Simone AU - Kopf S AD - Psychopharmacology Research, Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland. FAU - Hoener, Marius C AU - Hoener MC AD - Neuroscience Research, pRED, Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Basel, Switzerland. FAU - Liechti, Matthias E AU - Liechti ME AD - Psychopharmacology Research, Division of Clinical Pharmacology and Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150424 PL - England TA - Br J Pharmacol JT - British journal of pharmacology JID - 7502536 RN - 0 (Benzofurans) RN - 0 (Norepinephrine Plasma Membrane Transport Proteins) RN - 0 (Psychotropic Drugs) RN - 0 (Receptors, Dopamine) RN - 0 (Receptors, Serotonin) RN - 333DO1RDJY (Serotonin) RN - VTD58H1Z2X (Dopamine) RN - X4W3ENH1CV (Norepinephrine) SB - IM MH - Benzofurans/*pharmacology MH - Cell Survival/drug effects MH - Dopamine/metabolism MH - HEK293 Cells MH - Humans MH - Norepinephrine/metabolism MH - Norepinephrine Plasma Membrane Transport Proteins/metabolism MH - Psychotropic Drugs/*pharmacology MH - Receptors, Dopamine/metabolism MH - Receptors, Serotonin/metabolism MH - Serotonin/metabolism PMC - PMC4500375 EDAT- 2015/03/15 06:00 MHDA- 2016/04/08 06:00 PMCR- 2016/07/01 CRDT- 2015/03/14 06:00 PHST- 2014/12/23 00:00 [received] PHST- 2015/02/06 00:00 [revised] PHST- 2015/03/09 00:00 [accepted] PHST- 2015/03/14 06:00 [entrez] PHST- 2015/03/15 06:00 [pubmed] PHST- 2016/04/08 06:00 [medline] PHST- 2016/07/01 00:00 [pmc-release] AID - 10.1111/bph.13128 [doi] PST - ppublish SO - Br J Pharmacol. 2015 Jul;172(13):3412-25. doi: 10.1111/bph.13128. Epub 2015 Apr 24.