PMID- 10591869 OWN - NLM STAT- MEDLINE DCOM- 20000124 LR - 20190726 IS - 0033-3158 (Print) IS - 0033-3158 (Linking) VI - 147 IP - 1 DP - 1999 Nov TI - Altered neuroendocrine and behavioral responses to m-chlorophenylpiperazine in 3,4-methylenedioxymethamphetamine (MDMA) users. PG - 56-65 AB - RATIONALE: (+/-) 3,4-Methylenedioxymethamphetamine (MDMA, "Ecstasy") is a popular drug of abuse and a brain serotonin neurotoxin in animals. Growing evidence indicates that humans are also susceptible to MDMA's neurotoxic effects, although few functional consequences of MDMA-induced 5-HT damage have been identified. OBJECTIVE: The present study sought to determine whether possible differences between MDMA users and control subjects could be unmasked by utilizing a pharmacological challenge with the mixed 5-HT agonist, meta-chlorophenylpiperazine (m-CPP). It was postulated that 5-HT neurotoxicity in MDMA users would be associated with altered 5-HT responsivity, exemplified by altered physiological and behavioral responses to m-CPP. METHODS: Twenty-five MDMA users who had not taken MDMA for at least 3 weeks and 25 controls received intravenous placebo (normal saline) and m-CPP (0.08 mg/kg) in a fixed order, single blind design. Repeated measures of mood, physical symptoms, and blood samples for neuroendocrine analyses were collected during the 90 min after each infusion. RESULTS: MDMA users reported more positive and fewer negative emotions and physical symptoms following m-CPP than controls, and were significantly less likely to report an m-CPP-induced panic attack. Male MDMA users had diminished cortisol and prolactin responses to m-CPP. CONCLUSIONS: The present data indicate that MDMA users have alterations in 5-HT neuronal function, possibly as a consequence of MDMA-induced brain serotonin neural injury. FAU - McCann, U D AU - McCann UD AD - Biological Psychiatry Branch, National Institute of Mental Health, Bethesda, MD 20892-1272, USA. umccann@helix.nih.gov FAU - Eligulashvili, V AU - Eligulashvili V FAU - Mertl, M AU - Mertl M FAU - Murphy, D L AU - Murphy DL FAU - Ricaurte, G A AU - Ricaurte GA LA - eng GR - DA00206/DA/NIDA NIH HHS/United States GR - DA05707/DA/NIDA NIH HHS/United States GR - DA05938/DA/NIDA NIH HHS/United States PT - Clinical Trial PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - Germany TA - Psychopharmacology (Berl) JT - Psychopharmacology JID - 7608025 RN - 0 (Hallucinogens) RN - 0 (Piperazines) RN - 0 (Serotonin Receptor Agonists) RN - 333DO1RDJY (Serotonin) RN - 9002-62-4 (Prolactin) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - REY0CNO998 (1-(3-chlorophenyl)piperazine) RN - WI4X0X7BPJ (Hydrocortisone) SB - IM MH - Adult MH - Affect/drug effects MH - Anxiety/psychology MH - Behavior/*drug effects MH - Female MH - Hallucinogens/*adverse effects MH - Humans MH - Hydrocortisone/blood MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*adverse effects MH - Neurosecretory Systems/*drug effects MH - *Piperazines/blood MH - Prolactin/blood MH - Serotonin/*physiology MH - *Serotonin Receptor Agonists/blood MH - Single-Blind Method EDAT- 1999/12/11 00:00 MHDA- 1999/12/11 00:01 CRDT- 1999/12/11 00:00 PHST- 1999/12/11 00:00 [pubmed] PHST- 1999/12/11 00:01 [medline] PHST- 1999/12/11 00:00 [entrez] AID - 91470056.213 [pii] AID - 10.1007/s002130051142 [doi] PST - ppublish SO - Psychopharmacology (Berl). 1999 Nov;147(1):56-65. doi: 10.1007/s002130051142.