PMID- 17579960 OWN - NLM STAT- MEDLINE DCOM- 20070711 LR - 20190513 IS - 0146-4760 (Print) IS - 0146-4760 (Linking) VI - 31 IP - 3 DP - 2007 Apr TI - Analysis of MDMA and its metabolites in urine and plasma following a neurotoxic dose of MDMA. PG - 138-43 AB - 3,4-Methylenedioxymethamphetamine (MDMA), a commonly encountered drug of abuse, has been shown in a variety of studies to cause neurotoxic effects. Because MDMA itself is not neurotoxic, identifying the potential neurotoxic metabolite(s) was of significant importance. Evaluation of urine and plasma concentrations of MDMA and three of its main metabolites, 3,4-methylenedioxyamphetamine (MDA), 4-hydroxy-3-methoxyamphetamine (HMA), and 4-hydroxy-3-methoxymethamphetamine (HMMA), following administration of a neurotoxic dose (20 mg/kg) to male Dark Agouti rats was accomplished. Currently there are no data available describing urine and plasma concentrations of MDMA and these metabolites over a period of 7 days. The rats received a single 20 mg/kg i.p. dose of MDMA. Blood and urine samples were collected prior to administration and at 2, 4, 8, 12, 16, 20, 24, 48, 96, and 168 h following drug administration. Plasma and urine samples were extracted using solid-phase extraction, derivatized with N-methyl-bis(trifluoroacetamide), then analyzed using gas chromatography-mass spectrometry. Urine samples showed peak concentrations of MDMA at 4 h, MDA at 8 h, HMMA at 12 h, and HMA at 16 h post dose. MDMA and its metabolites were detectable (limit of detection 25 ng/mL) in the urine for up to 168 h post dose. Plasma samples showed mean peak concentrations of MDMA and MDA at 2 h post dose and HMMA at 4 h. Although the highest mean concentration of HMA was seen at 24 h post dose, variability between sample results for this time point was significant. No detectable levels of MDMA, MDA, HMA, and HMMA (LOD 10 ng/mL) were found in plasma at 96 and 168 h post dose. FAU - Valtier, Sandra AU - Valtier S AD - Clinical Research Division, Wilford Hall Medical Center, Lackland AFB, Texas 78236, USA. Sandra.Valtier@lackland.af.mil FAU - Phelix, Clyde F AU - Phelix CF FAU - Cody, John T AU - Cody JT LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - England TA - J Anal Toxicol JT - Journal of analytical toxicology JID - 7705085 RN - 0 (Psychotropic Drugs) RN - 117652-28-5 (4-hydroxy-3-methoxymethamphetamine) RN - 13026-44-3 (3-O-methyl-alpha-methyldopamine) RN - 44RAL3456C (Methamphetamine) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - ML1I4KK67B (3,4-methylenedioxyethamphetamine) RN - VTD58H1Z2X (Dopamine) SB - IM MH - 3,4-Methylenedioxyamphetamine/analogs & derivatives/blood/urine MH - Animals MH - Biotransformation MH - Calibration MH - Dopamine/analogs & derivatives/blood/urine MH - Gas Chromatography-Mass Spectrometry/standards MH - Male MH - Methamphetamine/analogs & derivatives/blood/urine MH - N-Methyl-3,4-methylenedioxyamphetamine/*blood/pharmacokinetics/toxicity/*urine MH - Psychotropic Drugs/*blood/pharmacokinetics/toxicity/*urine MH - Rats MH - Reproducibility of Results MH - Toxicology/methods/standards EDAT- 2007/06/21 09:00 MHDA- 2007/07/12 09:00 CRDT- 2007/06/21 09:00 PHST- 2007/06/21 09:00 [pubmed] PHST- 2007/07/12 09:00 [medline] PHST- 2007/06/21 09:00 [entrez] AID - 10.1093/jat/31.3.138 [doi] PST - ppublish SO - J Anal Toxicol. 2007 Apr;31(3):138-43. doi: 10.1093/jat/31.3.138.