PMID- 30925718 OWN - NLM STAT- MEDLINE DCOM- 20190729 LR - 20221207 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 20 IP - 7 DP - 2019 Mar 28 TI - Molecular Toxicological Mechanisms of Synthetic Cathinones on C2C12 Myoblasts. LID - 10.3390/ijms20071561 [doi] LID - 1561 AB - Synthetic cathinones are popular psychoactive substances that may cause skeletal muscle damage. In addition to indirect sympathomimetic myotoxicity, these substances could be directly myotoxic. Since studies in myocytes are currently lacking, the aim of the present study was to investigate potential toxicological effects by synthetic cathinones on C2C12 myoblasts (mouse skeletal muscle cell line). We exposed C2C12 myoblasts to 3-methylmethcathinone, 4-methylmethcathinone (mephedrone), 3,4-methylenedioxymethcathinone (methylone), 3,4-methylenedioxypyrovalerone (MDPV), alpha-pyrrolidinovalerophenone (alpha-PVP), and naphthylpyrovalerone (naphyrone) for 1 or 24 h before cell membrane integrity, ATP content, mitochondrial oxygen consumption, and mitochondrial superoxide production was measured. 3,4-Methylenedioxymethamphetamine (MDMA) was included as a reference compound. All investigated synthetic cathinones, as well as MDMA, impaired cell membrane integrity, depleted ATP levels, and increased mitochondrial superoxide concentrations in a concentration-dependent manner in the range of 50(-)2000 muM. The two pyrovalerone derivatives alpha-PVP and naphyrone, and MDMA, additionally impaired basal and maximal cellular respiration, suggesting mitochondrial dysfunction. Alpha-PVP inhibited complex I, naphyrone complex II, and MDMA complex I and III, whereas complex IV was not affected. We conclude that, in addition to sympathetic nervous system effects and strenuous muscle exercise, direct effects of some cathinones on skeletal muscle mitochondria may contribute to myotoxicity in susceptible synthetic cathinone drugs users. FAU - Zhou, Xun AU - Zhou X AD - Division of Clinical Pharmacology & Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, 4031 Basel, Switzerland. Xun.Zhou@unibas.ch. FAU - Luethi, Dino AU - Luethi D AD - Division of Clinical Pharmacology & Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, 4031 Basel, Switzerland. dino.luethi@unibas.ch. FAU - Sanvee, Gerda M AU - Sanvee GM AD - Division of Clinical Pharmacology & Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, 4031 Basel, Switzerland. Gerda.Sanvee@unibas.ch. FAU - Bouitbir, Jamal AU - Bouitbir J AUID- ORCID: 0000-0003-4453-9457 AD - Division of Clinical Pharmacology & Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, 4031 Basel, Switzerland. Jamal.Bouitbir@unibas.ch. AD - Swiss Centre for Applied Human Toxicology, 4031 Basel, Switzerland. Jamal.Bouitbir@unibas.ch. FAU - Liechti, Matthias E AU - Liechti ME AUID- ORCID: 0000-0002-1765-9659 AD - Division of Clinical Pharmacology & Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, 4031 Basel, Switzerland. Matthias.Liechti@unibas.ch. AD - Swiss Centre for Applied Human Toxicology, 4031 Basel, Switzerland. Matthias.Liechti@unibas.ch. FAU - Krahenbuhl, Stephan AU - Krahenbuhl S AD - Division of Clinical Pharmacology & Toxicology, Department of Biomedicine, University Hospital Basel and University of Basel, 4031 Basel, Switzerland. stephan.kraehenbuehl@usb.ch. AD - Swiss Centre for Applied Human Toxicology, 4031 Basel, Switzerland. stephan.kraehenbuehl@usb.ch. LA - eng GR - SNF 31003A_156270/Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung/ PT - Journal Article DEP - 20190328 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (1-naphthalen-2-yl-2-pyrrolidin-1-ylpentan-1-one) RN - 0 (Benzodioxoles) RN - 0 (Pentanones) RN - 0 (Psychotropic Drugs) RN - 0 (Pyrrolidines) RN - 0 (alpha-pyrrolidinovalerophenone) RN - 11062-77-4 (Superoxides) RN - 44RAL3456C (Methamphetamine) RN - 8BA8T27317 (mephedrone) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - L4I4B1R01F (methylone) RN - 0 (Synthetic Cathinone) MH - Adenosine Triphosphate/metabolism MH - Animals MH - Benzodioxoles/*toxicity MH - Cell Line MH - Methamphetamine/*analogs & derivatives/toxicity MH - Mice MH - Mitochondria/drug effects/metabolism/pathology MH - Myoblasts/*drug effects/metabolism/pathology MH - Oxygen Consumption/drug effects MH - Pentanones/*toxicity MH - Psychotropic Drugs/*toxicity MH - Pyrrolidines/*toxicity MH - Superoxides/metabolism MH - Synthetic Cathinone PMC - PMC6479684 OTO - NOTNLM OT - electron transport chain OT - mitochondria OT - skeletal muscle toxicity OT - synthetic cathinones COIS- The authors declare no conflict of interest. EDAT- 2019/03/31 06:00 MHDA- 2019/07/30 06:00 PMCR- 2019/04/01 CRDT- 2019/03/31 06:00 PHST- 2019/01/31 00:00 [received] PHST- 2019/03/22 00:00 [revised] PHST- 2019/03/22 00:00 [accepted] PHST- 2019/03/31 06:00 [entrez] PHST- 2019/03/31 06:00 [pubmed] PHST- 2019/07/30 06:00 [medline] PHST- 2019/04/01 00:00 [pmc-release] AID - ijms20071561 [pii] AID - ijms-20-01561 [pii] AID - 10.3390/ijms20071561 [doi] PST - epublish SO - Int J Mol Sci. 2019 Mar 28;20(7):1561. doi: 10.3390/ijms20071561.