PMID- 26395866 OWN - NLM STAT- MEDLINE DCOM- 20160818 LR - 20151028 IS - 1521-009X (Electronic) IS - 0090-9556 (Linking) VI - 43 IP - 12 DP - 2015 Dec TI - Chiral Plasma Pharmacokinetics of 3,4-Methylenedioxymethamphetamine and its Phase I and II Metabolites following Controlled Administration to Humans. PG - 1864-71 LID - 10.1124/dmd.115.066340 [doi] AB - Generally, pharmacokinetic studies on 3,4-methylenedioxymethamphetamine (MDMA) in blood have been performed after conjugate cleavage, without taking into account that phase II metabolites represent distinct chemical entities with their own effects and stereoselective pharmacokinetics. The aim of the present study was to stereoselectively investigate the pharmacokinetics of intact glucuronide and sulfate metabolites of MDMA in blood plasma after a controlled single MDMA dose. Plasma samples from 16 healthy participants receiving 125 mg of MDMA orally in a controlled study were analyzed using liquid chromatography-tandem mass spectroscopy after chiral derivatization. Pharmacokinetic parameters of R- and S-stereoisomers were determined. Sulfates of 3,4-dihydroxymethamphetamine (DHMA), and sulfate and glucuronide of 4-hydroxy-3-methoxymethamphetamine (HMMA) were identified, whereas free phase I metabolites were not detected. Stereoselective differences in Cmax and AUC24 were observed with the following preferences: R>S for MDMA and DHMA 4-sulfate; S>R for 3,4-methylenedioxyamphetamine (MDA), DHMA 3-sulfate, and HMMA glucuronide; and no preference in Cmax for HMMA sulfate. R/S ratios were >1 for all analytes after 24 hours, independent of the initial chiral preference. These are the first data on chiral pharmacokinetics of MDMA phase II metabolites in human plasma in vivo after controlled administration. The main human MDMA metabolites were shown to be sulfate and glucuronide conjugates. CI - Copyright (c) 2015 by The American Society for Pharmacology and Experimental Therapeutics. FAU - Steuer, Andrea E AU - Steuer AE AD - Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Switzerland (A.E.S, C.S., T.K.); Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Switzerland (Y.S., A.R., M.E.L.) andrea.steuer@irm.uzh.ch. FAU - Schmidhauser, Corina AU - Schmidhauser C AD - Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Switzerland (A.E.S, C.S., T.K.); Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Switzerland (Y.S., A.R., M.E.L.). FAU - Schmid, Yasmin AU - Schmid Y AD - Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Switzerland (A.E.S, C.S., T.K.); Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Switzerland (Y.S., A.R., M.E.L.). FAU - Rickli, Anna AU - Rickli A AD - Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Switzerland (A.E.S, C.S., T.K.); Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Switzerland (Y.S., A.R., M.E.L.). FAU - Liechti, Matthias E AU - Liechti ME AD - Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Switzerland (A.E.S, C.S., T.K.); Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Switzerland (Y.S., A.R., M.E.L.). FAU - Kraemer, Thomas AU - Kraemer T AD - Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Switzerland (A.E.S, C.S., T.K.); Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel, Switzerland (Y.S., A.R., M.E.L.). LA - eng PT - Controlled Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150922 PL - United States TA - Drug Metab Dispos JT - Drug metabolism and disposition: the biological fate of chemicals JID - 9421550 RN - 117652-28-5 (4-hydroxy-3-methoxymethamphetamine) RN - 44RAL3456C (Methamphetamine) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) SB - IM MH - 3,4-Methylenedioxyamphetamine/*administration & dosage/*blood/chemistry MH - Administration, Oral MH - Adult MH - Cross-Over Studies MH - Double-Blind Method MH - Female MH - Humans MH - Male MH - Methamphetamine/administration & dosage/*analogs & derivatives/blood/chemistry MH - Stereoisomerism MH - Young Adult EDAT- 2015/09/24 06:00 MHDA- 2016/08/19 06:00 CRDT- 2015/09/24 06:00 PHST- 2015/07/16 00:00 [received] PHST- 2015/09/21 00:00 [accepted] PHST- 2015/09/24 06:00 [entrez] PHST- 2015/09/24 06:00 [pubmed] PHST- 2016/08/19 06:00 [medline] AID - dmd.115.066340 [pii] AID - 10.1124/dmd.115.066340 [doi] PST - ppublish SO - Drug Metab Dispos. 2015 Dec;43(12):1864-71. doi: 10.1124/dmd.115.066340. Epub 2015 Sep 22.