PMID- 14563541 OWN - NLM STAT- MEDLINE DCOM- 20040311 LR - 20191210 IS - 0376-8716 (Print) IS - 0376-8716 (Linking) VI - 72 IP - 1 DP - 2003 Oct 24 TI - Reinforcing, subjective, and physiological effects of MDMA in humans: a comparison with d-amphetamine and mCPP. PG - 33-44 AB - 3,4-methylenedioxymethamphetamine (MDMA) is a widely used drug of abuse chemically related to both the amphetamines and mescaline. Laboratory animal studies have shown that MDMA is a potent re-uptake inhibitor and releaser of dopamine and serotonin. Although the subjective and physiological effects of MDMA have been compared to d-amphetamine in humans, no direct comparison with a serotonin releasing agent has been reported and reinforcing effects have not been evaluated. In this paper we report a direct comparison of the reinforcing, subjective, and physiological effects of MDMA (1 and 2 mg/kg) to d-amphetamine (10 and 20 mg), to metachlorophenylpiperazine (mCPP--a serotonin releasing agent (0.5 and 0.75 mg/kg)), and to placebo using a within-subject design in 12 volunteers with moderate MDMA experience. Both the high dose of d-amphetamine and MDMA showed significant reinforcing effects as indicated by high cross-over values on the multiple choice procedure compared to all other treatments. All three drugs showed dose-dependent changes in subjective effects whereas physiological effects were most pronounced for MDMA with almost no changes seen with mCPP. The subjective effects of MDMA were similar both to those of mCPP and d-amphetamine, suggesting that both dopamine and serotonin systems are involved in mediating these effects. In contrast, only the dopaminergic agents, d-amphetamine and MDMA, had reinforcing effects. FAU - Tancer, Manuel AU - Tancer M AD - Department of Psychiatry and Behavioral Neurosciences, Substance Abuse Research Division, Addiction Research Institute, Wayne State University, 2761 E Jefferson, Detroit, MI 48207, USA. mtancer@med.wayne.edu FAU - Johanson, Chris-Ellyn AU - Johanson CE LA - eng GR - 5 K08 DA00370/DA/NIDA NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Ireland TA - Drug Alcohol Depend JT - Drug and alcohol dependence JID - 7513587 RN - 0 (Dopamine Agonists) RN - 0 (Hallucinogens) RN - 0 (Piperazines) RN - 0 (Serotonin Receptor Agonists) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - TZ47U051FI (Dextroamphetamine) RN - WI4X0X7BPJ (Hydrocortisone) SB - IM MH - Adolescent MH - Adult MH - Affect/*drug effects MH - Cross-Over Studies MH - Dextroamphetamine/*pharmacology MH - Dopamine Agonists/*pharmacology MH - Female MH - Hallucinogens/*pharmacology MH - Humans MH - Hydrocortisone/metabolism MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Piperazines/*pharmacology MH - *Reinforcement, Psychology MH - Serotonin Receptor Agonists/*pharmacology MH - Severity of Illness Index MH - Substance-Related Disorders/*diagnosis/*epidemiology MH - Surveys and Questionnaires EDAT- 2003/10/18 05:00 MHDA- 2004/03/12 05:00 CRDT- 2003/10/18 05:00 PHST- 2003/10/18 05:00 [pubmed] PHST- 2004/03/12 05:00 [medline] PHST- 2003/10/18 05:00 [entrez] AID - S0376871603001728 [pii] AID - 10.1016/s0376-8716(03)00172-8 [doi] PST - ppublish SO - Drug Alcohol Depend. 2003 Oct 24;72(1):33-44. doi: 10.1016/s0376-8716(03)00172-8.