PMID- 9506825 OWN - NLM STAT- MEDLINE DCOM- 19980511 LR - 20190921 IS - 0162-3109 (Print) IS - 0162-3109 (Linking) VI - 38 IP - 3 DP - 1998 Jan TI - Acute 3,4-methylenedioxymethamphetamine(MDMA) administration produces a rapid and sustained suppression of immune function in the rat. PG - 253-60 AB - (+)-3,4-Methylenedioxymethamphetamine (MDMA;'Ecstasy') is a ring substituted phenylisopropylamine that is structurally related to both amphetamines and hallucinogens. The unique behavioural activating properties of MDMA have led to its widespread abuse. MDMA induces many neurochemical, behavioural and endocrine alterations which closely resemble those elicited by exposure to acute stress, suggesting that MDMA could be regarded as a 'chemical stressor'. In addition to the neurochemical, behavioural and endocrine effects of stressor exposure, it has been reported that stress produces alterations in immune function. However, to date the effects of MDMA on immune function have been restricted to in vitro investigations. In this study we report, for the first time, that acute in vivo administration of MDMA (20 mg/kg, i.p.) produced a rapid (within 30 min) suppression of Con A-induced lymphocyte proliferation and a profound reduction in the total leucocyte count in rats that persisted for at least 6 h following injection. These alterations in immune function were accompanied by a significant increase in plasma corticosterone concentrations 30 min post MDMA administration which had returned to baseline values within 6 h of drug administration. In addition, there was a significant depletion in cortical 5-HT concentrations both 30 min and 6 h after MDMA administration. The results of this study provide evidence that in addition to the well established toxic effects of MDMA on the central serotonergic system, a single administration of this widely abused drug induces a rapid and sustained suppression of immune function. FAU - Connor, T J AU - Connor TJ AD - Department of Pharmacology, University College Galway, Ireland. FAU - McNamara, M G AU - McNamara MG FAU - Finn, D AU - Finn D FAU - Currid, A AU - Currid A FAU - O'Malley, M AU - O'Malley M FAU - Redmond, A M AU - Redmond AM FAU - Kelly, J P AU - Kelly JP FAU - Leonard, B E AU - Leonard BE LA - eng PT - Journal Article PL - Netherlands TA - Immunopharmacology JT - Immunopharmacology JID - 7902474 RN - 0 (Hallucinogens) RN - 0 (Serotonin Agents) RN - 11028-71-0 (Concanavalin A) RN - 333DO1RDJY (Serotonin) RN - 54-16-0 (Hydroxyindoleacetic Acid) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) RN - W980KJ009P (Corticosterone) SB - IM MH - Animals MH - Cerebral Cortex/drug effects/metabolism MH - Concanavalin A MH - Corticosterone/blood MH - Female MH - Hallucinogens/administration & dosage/*toxicity MH - Hydroxyindoleacetic Acid/analysis/metabolism MH - Immunity, Cellular/*drug effects MH - Leukocyte Count/drug effects MH - Lymphocyte Activation/drug effects MH - N-Methyl-3,4-methylenedioxyamphetamine/administration & dosage/*toxicity MH - Rats MH - Rats, Sprague-Dawley MH - Serotonin/analysis/metabolism MH - Serotonin Agents/administration & dosage/*toxicity MH - T-Lymphocytes/*drug effects/immunology MH - Time Factors EDAT- 1998/03/20 00:00 MHDA- 1998/03/20 00:01 CRDT- 1998/03/20 00:00 PHST- 1998/03/20 00:00 [pubmed] PHST- 1998/03/20 00:01 [medline] PHST- 1998/03/20 00:00 [entrez] AID - S0162310997000842 [pii] AID - 10.1016/s0162-3109(97)00084-2 [doi] PST - ppublish SO - Immunopharmacology. 1998 Jan;38(3):253-60. doi: 10.1016/s0162-3109(97)00084-2.