PMID- 27156124 OWN - NLM STAT- MEDLINE DCOM- 20170627 LR - 20180928 IS - 1097-6760 (Electronic) IS - 0196-0644 (Linking) VI - 69 IP - 1 DP - 2017 Jan TI - Acute Toxicity Associated With the Recreational Use of the Novel Psychoactive Benzofuran N-methyl-5-(2 aminopropyl)benzofuran. PG - 79-82 LID - S0196-0644(16)30003-8 [pii] LID - 10.1016/j.annemergmed.2016.03.042 [doi] AB - N-methyl-5-(2 aminopropyl)benzofuran (5-MAPB) is a novel psychoactive benzofuran, created by N-methylation of 5-(2-aminopropyl)benzofuran (5-APB), which shares structural features with methylenedioxymethamphetamine (MDMA). To our knowledge, no case of 5-MAPB-related toxicity has been published in the scientific literature. We report a case of oral 5-MAPB exposure confirmed by liquid chromatography-tandem mass spectrometry in a 24-year-old previously healthy white man. Observed symptoms and signs such as paleness, cold and clammy skin, hypertension, elevated high-sensitive troponin T level, tachycardia, ECG change, diaphoresis, mild hyperthermia, mydriasis, tremor, hyperreflexia, clonus, agitation, disorientation, hallucinations, convulsions, reduced level of consciousness, and creatine kinase level elevation (305 IU/L) were compatible with undesired effects related to 5-APB or MDMA exposure. Signs and symptoms resolved substantially within 14 hours with aggressive symptomatic treatment, including sedation with benzodiazepines, external cooling, analgesia and sedation with fentanyl-propofol, and treatment with urapidil, an alpha-receptor-blocking agent. 5-MAPB showed first-order elimination kinetics with a half-life of 6.5 hours, comparable to the half-life of MDMA. According to the chemical structure, this case report, and users' Web reports, 5-MAPB appears to have an acute toxicity profile similar to that of 5-APB and MDMA, with marked vasoconstrictor effect. CI - Copyright (c) 2016 American College of Emergency Physicians. Published by Elsevier Inc. All rights reserved. FAU - Hofer, Katharina E AU - Hofer KE AD - National Poisons Centre, Tox Info Suisse, Associated Institute of the University of Zurich, Zurich, Switzerland. Electronic address: katharina.hofer@toxinfo.ch. FAU - Faber, Katrin AU - Faber K AD - National Poisons Centre, Tox Info Suisse, Associated Institute of the University of Zurich, Zurich, Switzerland. FAU - Muller, Daniel M AU - Muller DM AD - Institute for Clinical Chemistry, University Hospital Zurich, Zurich, Switzerland. FAU - Hauffe, Till AU - Hauffe T AD - Division of Medical Intensive Care Unit, University Hospital Zurich, Zurich, Switzerland. FAU - Wenger, Urs AU - Wenger U AD - Division of Medical Intensive Care Unit, University Hospital Zurich, Zurich, Switzerland. FAU - Kupferschmidt, Hugo AU - Kupferschmidt H AD - National Poisons Centre, Tox Info Suisse, Associated Institute of the University of Zurich, Zurich, Switzerland. FAU - Rauber-Luthy, Christine AU - Rauber-Luthy C AD - National Poisons Centre, Tox Info Suisse, Associated Institute of the University of Zurich, Zurich, Switzerland. LA - eng PT - Case Reports PT - Journal Article DEP - 20160504 PL - United States TA - Ann Emerg Med JT - Annals of emergency medicine JID - 8002646 RN - 0 (Benzofurans) RN - 0 (Designer Drugs) RN - 0 (N-methyl-5-(2 aminopropyl)benzofuran) RN - 0 (Psychotropic Drugs) RN - 44RAL3456C (Methamphetamine) SB - IM MH - Akathisia, Drug-Induced/etiology MH - Benzofurans/*toxicity MH - Designer Drugs/*toxicity MH - Glasgow Coma Scale MH - Hallucinations/chemically induced MH - Humans MH - Male MH - Methamphetamine/*analogs & derivatives/toxicity MH - Psychotropic Drugs/*toxicity MH - Young Adult EDAT- 2016/05/09 06:00 MHDA- 2017/06/28 06:00 CRDT- 2016/05/09 06:00 PHST- 2016/02/18 00:00 [received] PHST- 2016/05/09 06:00 [pubmed] PHST- 2017/06/28 06:00 [medline] PHST- 2016/05/09 06:00 [entrez] AID - S0196-0644(16)30003-8 [pii] AID - 10.1016/j.annemergmed.2016.03.042 [doi] PST - ppublish SO - Ann Emerg Med. 2017 Jan;69(1):79-82. doi: 10.1016/j.annemergmed.2016.03.042. Epub 2016 May 4.