PMID- 27291301 OWN - NLM STAT- MEDLINE DCOM- 20171215 LR - 20181221 IS - 1099-1263 (Electronic) IS - 0260-437X (Linking) VI - 37 IP - 3 DP - 2017 Mar TI - Cytotoxic effects of psychotropic benzofuran derivatives, N-methyl-5-(2-aminopropyl)benzofuran and its N-demethylated derivative, on isolated rat hepatocytes. PG - 243-252 LID - 10.1002/jat.3351 [doi] AB - The novel psychoactive compounds derived from amphetamine have been illegally abused as recreational drugs, some of which are known to be hepatotoxic in humans and experimental animals. The cytotoxic effects and mechanisms of 5-(2-aminopropyl)benzofuran (5-APB) and N-methyl-5-(2-aminopropyl)benzofuran (5-MAPB), both of which are benzofuran analogues of amphetamine, and 3,4-methylenedioxy-N-methamphetamine (MDMA) were studied in freshly isolated rat hepatocytes. 5-MAPB caused not only concentration-dependent (0-4.0 mm) and time-dependent (0-3 h) cell death accompanied by the depletion of cellular ATP and reduced glutathione and protein thiol levels, but also accumulation of oxidized glutathione. Of the other analogues examined at a concentration of 4 mm, 5-MAPB/5-APB-induced cytotoxicity with the production of reactive oxygen species and loss of mitochondrial membrane potential was greater than that induced by MDMA. In isolated rat liver mitochondria, the benzofurans resulted in a greater increase in the rate of state 4 oxygen consumption than did MDMA, with a decrease in the rate of state 3 oxygen consumption. Furthermore, the benzofurans caused more of a rapid mitochondrial swelling dependent on the mitochondrial permeability transition than MDMA. 5-MAPB at a weakly toxic level (1 mm) was metabolized slowly: levels of 5-MAPB and 5-APB were approximately 0.9 mm and 50 mum, respectively, after 3 h incubation. Taken collectively, these results indicate that mitochondria are target organelles for the benzofuran analogues and MDMA, which elicit cytotoxicity through mitochondrial failure, and the onset of cytotoxicity may depend on the initial and/or residual concentrations of 5-MAPB rather than on those of its metabolite 5-APB. Copyright (c) 2016 John Wiley & Sons, Ltd. CI - Copyright (c) 2016 John Wiley & Sons, Ltd. FAU - Nakagawa, Yoshio AU - Nakagawa Y AD - Division of Toxicology, Tokyo Metropolitan Institute of Public Health, 3-24-1, Hyakunin-cho, Shinjuku-ku, Tokyo, 169-0073, Japan. FAU - Suzuki, Toshinari AU - Suzuki T AD - Division of Environmental Health, Tokyo Metropolitan Institute of Public Health, 3-24-1, Hyakunin-cho, Shinjuku-ku, Tokyo, 169-0073, Japan. FAU - Tada, Yukie AU - Tada Y AD - Division of Toxicology, Tokyo Metropolitan Institute of Public Health, 3-24-1, Hyakunin-cho, Shinjuku-ku, Tokyo, 169-0073, Japan. FAU - Inomata, Akiko AU - Inomata A AD - Division of Toxicology, Tokyo Metropolitan Institute of Public Health, 3-24-1, Hyakunin-cho, Shinjuku-ku, Tokyo, 169-0073, Japan. LA - eng PT - Journal Article DEP - 20160613 PL - England TA - J Appl Toxicol JT - Journal of applied toxicology : JAT JID - 8109495 RN - 0 (Benzofurans) RN - 0 (Designer Drugs) RN - 0 (N-methyl-5-(2 aminopropyl)benzofuran) RN - 0 (Propylamines) RN - 0 (Reactive Oxygen Species) RN - 2M3825704H (5-(2-aminopropyl)benzofuran) RN - 44RAL3456C (Methamphetamine) SB - IM MH - Animals MH - Benzofurans/metabolism/*toxicity MH - Biotransformation MH - Cell Survival/drug effects MH - Cells, Cultured MH - Designer Drugs/metabolism/*toxicity MH - Dose-Response Relationship, Drug MH - Hepatocytes/*drug effects/metabolism/pathology MH - Male MH - Membrane Potential, Mitochondrial/drug effects MH - Methamphetamine/*analogs & derivatives/metabolism/toxicity MH - Mitochondria, Liver/drug effects MH - Mitochondrial Membranes/drug effects MH - Permeability MH - Propylamines/metabolism/*toxicity MH - Rats, Inbred F344 MH - Reactive Oxygen Species/metabolism OTO - NOTNLM OT - 5-APB OT - 5-MAPB OT - benzofurans OT - cytotoxicity OT - designer drugs OT - metabolism OT - mitochondrial dysfunction OT - oxidative stress OT - rat hepatocytes EDAT- 2016/06/14 06:00 MHDA- 2017/12/16 06:00 CRDT- 2016/06/14 06:00 PHST- 2016/03/23 00:00 [received] PHST- 2016/04/13 00:00 [revised] PHST- 2016/04/24 00:00 [accepted] PHST- 2016/06/14 06:00 [pubmed] PHST- 2017/12/16 06:00 [medline] PHST- 2016/06/14 06:00 [entrez] AID - 10.1002/jat.3351 [doi] PST - ppublish SO - J Appl Toxicol. 2017 Mar;37(3):243-252. doi: 10.1002/jat.3351. Epub 2016 Jun 13.