PMID- 24726767 OWN - NLM STAT- MEDLINE DCOM- 20150109 LR - 20140527 IS - 1872-9754 (Electronic) IS - 0197-0186 (Linking) VI - 72 DP - 2014 Jun TI - Effects of long-term exposure of 3,4-methylenedioxymethamphetamine (MDMA; "ecstasy") on neuronal transmitter transport, brain immuno-regulatory systems and progression of experimental periodontitis in rats. PG - 30-6 LID - S0197-0186(14)00087-4 [pii] LID - 10.1016/j.neuint.2014.04.002 [doi] AB - The present study was designed to investigate the effects of long-term exposure (4 weeks) to the widely used narcotic drug and putative neurotoxicant 3,4-methylenedioxymetamphetamine (MDMA; "ecstasy") on neuronal transmitter transport and progression of experimental periodontitis in male Wistar rats. The rats were exposed to MDMA (10mg/kg/day i.p.) or saline five days a week for four consecutive weeks. Exposure to MDMA induced a significant reduction in the synaptosomal reuptake of serotonin, while the uptake of dopamine was significantly increased 24h after the last injection of MDMA. In contrast, the synaptosomal uptake of noradrenaline and the vesicular uptake through the vesicular monoamine transporter 2 were not affected. In the experiments of periodontitis development, ligature-induced periodontitis was induced three days prior to MDMA administration. Compared to controls, MDMA-treated rats developed significantly more periodontitis. In conclusion, our results show that long-term exposure to MDMA affects the serotonergic and dopaminergic transport systems in the rat brain and increased the susceptibility to the psychosomatic ailment periodontitis following disturbances of brain immune-regulatory systems. These results are interesting with respect to recent research showing that changes in neurotransmitter signalling may alter the reactivity of brain-controlled immunoregulatory systems controlling pathogenic microorganisms colonizing mucosal surfaces. CI - Copyright (c) 2014 Elsevier Ltd. All rights reserved. FAU - Breivik, Torbjorn AU - Breivik T AD - Department of Periodontology, Faculty of Dentistry, University of Oslo, Norway; Department of Pathology and Forensic Odontology, Faculty of Dentistry, University of Oslo, Norway. FAU - Bogen, Inger Lise AU - Bogen IL AD - Norwegian Defence Research Establishment, Division for Protection, Kjeller, Norway; Norwegian Institute of Public Health, Division for Forensic Sciences, Department of Drug Abuse Research and Method Development, Oslo, Norway. FAU - Haug, Kristin Huse AU - Haug KH AD - Norwegian Defence Research Establishment, Division for Protection, Kjeller, Norway. FAU - Fonnum, Frode AU - Fonnum F AD - Norwegian Defence Research Establishment, Division for Protection, Kjeller, Norway. FAU - Opstad, Per-Kristian AU - Opstad PK AD - Norwegian Defence Research Establishment, Division for Protection, Kjeller, Norway. FAU - Eide, Dag Marcus AU - Eide DM AD - Norwegian Institute of Public Health, Division of Environmental Medicine, Department of Chemicals and Radiation, Norway. FAU - Myhre, Oddvar AU - Myhre O AD - Norwegian Defence Research Establishment, Division for Protection, Kjeller, Norway; Norwegian Institute of Public Health, Division of Environmental Medicine, Department of Chemicals and Radiation, Norway. Electronic address: Oddvar.Myhre@fhi.no. LA - eng PT - Journal Article DEP - 20140413 PL - England TA - Neurochem Int JT - Neurochemistry international JID - 8006959 RN - 0 (Neurotransmitter Agents) RN - 0 (Serotonin Agents) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Alveolar Bone Loss/chemically induced/pathology MH - Animals MH - Brain/drug effects/*immunology MH - Brain Chemistry/*drug effects MH - Disease Progression MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*toxicity MH - Neurotransmitter Agents/*metabolism MH - Periodontitis/*pathology MH - Rats MH - Rats, Wistar MH - Serotonin Agents/*toxicity MH - Weight Gain/drug effects OTO - NOTNLM OT - Brain-neuroendocrine-immune regulation OT - Dopamine OT - Ecstasy OT - MDMA OT - Periodontitis OT - Serotonin EDAT- 2014/04/15 06:00 MHDA- 2015/01/13 06:00 CRDT- 2014/04/15 06:00 PHST- 2013/10/29 00:00 [received] PHST- 2014/03/05 00:00 [revised] PHST- 2014/04/03 00:00 [accepted] PHST- 2014/04/15 06:00 [entrez] PHST- 2014/04/15 06:00 [pubmed] PHST- 2015/01/13 06:00 [medline] AID - S0197-0186(14)00087-4 [pii] AID - 10.1016/j.neuint.2014.04.002 [doi] PST - ppublish SO - Neurochem Int. 2014 Jun;72:30-6. doi: 10.1016/j.neuint.2014.04.002. Epub 2014 Apr 13.