PMID- 33607146 OWN - NLM STAT- MEDLINE DCOM- 20211203 LR - 20211214 IS - 1873-7064 (Electronic) IS - 0028-3908 (Linking) VI - 187 DP - 2021 Apr 1 TI - Increased kynurenine concentration attenuates serotonergic neurotoxicity induced by 3,4-methylenedioxymethamphetamine (MDMA) in rats through activation of aryl hydrocarbon receptor. PG - 108490 LID - S0028-3908(21)00044-7 [pii] LID - 10.1016/j.neuropharm.2021.108490 [doi] AB - 3,4-Methylenedioxymethamphetamine (MDMA) is an amphetamine derivative that has been shown to produce serotonergic damage in the brains of primates, including humans, and of rats. Tryptophan, the precursor of serotonin, is primarily degraded through the kynurenine (KYN) pathway, producing among others KYN, the main metabolite of this route. KYN has been reported as an endogenous agonist of the aryl hydrocarbon receptor (AhR), a transcription factor involved in several neurological functions. This study aims to determine the effect of MDMA on the KYN pathway and on AhR activity and to establish their role in the long-term serotonergic neurotoxicity induced by the drug in rats. Our results show that MDMA induces the activation of the KYN pathway, mediated by hepatic tryptophan 2,3-dioxygenase (TDO). MDMA also activated AhR as evidenced by increased AhR nuclear translocation and CYP1B1 mRNA expression. Autoradiographic quantification of serotonin transporters showed that both the TDO inhibitor 680C91 and the AhR antagonist CH-223191 potentiated the neurotoxicity induced by MDMA, while administration of exogenous l-kynurenine or of the AhR positive modulator 3,3'-diindolylmethane (DIM) partially prevented the serotonergic damage induced by the drug. The results demonstrate for the first time that MDMA increases KYN levels and AhR activity, and these changes appear to play a role in limiting the neurotoxicity induced by the drug. This work provides a better understanding of the physiological mechanisms that attenuate the brain damage induced by MDMA and identify modulation of the KYN pathway and of AhR as potential therapeutic strategies to limit the negative effects of MDMA. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Abuin-Martinez, C AU - Abuin-Martinez C AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. FAU - Vidal, R AU - Vidal R AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. FAU - Gutierrez-Lopez, M D AU - Gutierrez-Lopez MD AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. FAU - Perez-Hernandez, M AU - Perez-Hernandez M AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. FAU - Gimenez-Gomez, P AU - Gimenez-Gomez P AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. FAU - Morales-Puerto, N AU - Morales-Puerto N AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. FAU - O'Shea, E AU - O'Shea E AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. Electronic address: estheros@ucm.es. FAU - Colado, M I AU - Colado MI AD - Departamento de Farmacologia y Toxicologia, Facultad de Medicina, Universidad Complutense, Pza. Ramon y Cajal s/n, 28040, Madrid, Spain; Instituto de Investigacion Sanitaria Hospital 12 de Octubre, Madrid, Spain; Red de Trastornos Adictivos, Instituto de Salud Carlos III, Madrid, Spain; Instituto Universitario de Investigacion Neuroquimica (IUIN), Universidad Complutense, Madrid, Spain. Electronic address: colado@ucm.es. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210216 PL - England TA - Neuropharmacology JT - Neuropharmacology JID - 0236217 RN - 0 (Receptors, Aryl Hydrocarbon) RN - 0 (Serotonin Agents) RN - 0 (Serotonin Plasma Membrane Transport Proteins) RN - 333DO1RDJY (Serotonin) RN - 343-65-7 (Kynurenine) RN - EC 1.13.11.11 (Tryptophan Oxygenase) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Animals MH - Autoradiography MH - Hippocampus/*drug effects/metabolism MH - Kynurenine/*metabolism/pharmacology MH - N-Methyl-3,4-methylenedioxyamphetamine/*toxicity MH - Neurotoxicity Syndromes MH - Rats MH - Receptors, Aryl Hydrocarbon/antagonists & inhibitors/*drug effects/metabolism MH - Serotonin MH - Serotonin Agents/*toxicity MH - Serotonin Plasma Membrane Transport Proteins/metabolism MH - Tryptophan Oxygenase/antagonists & inhibitors/*drug effects/metabolism OTO - NOTNLM OT - 3,3'-Diindolylmethane OT - 3,3'-Diindolylmethane (PubChem CID: 3071) OT - 680C91(PubChem CID: 10014426) OT - Aryl hydrocarbon receptors OT - CH-223191 (PubChem CID: 3091786) OT - INCB024360 (PubChem CID: 135424953) OT - Kynurenine OT - L-kynurenine sulfate (PubChem CID: 161165) OT - L-leucine (PubChem CID: 6106) OT - MDMA OT - MDMA, HCl (PubChem CID: 71285) OT - Neurotoxicity OT - Probenecid (PubChem CID: 4911) OT - Tryptophan 2,3-dioxygenase EDAT- 2021/02/20 06:00 MHDA- 2021/12/15 06:00 CRDT- 2021/02/19 20:11 PHST- 2020/06/13 00:00 [received] PHST- 2021/01/15 00:00 [revised] PHST- 2021/02/02 00:00 [accepted] PHST- 2021/02/20 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2021/02/19 20:11 [entrez] AID - S0028-3908(21)00044-7 [pii] AID - 10.1016/j.neuropharm.2021.108490 [doi] PST - ppublish SO - Neuropharmacology. 2021 Apr 1;187:108490. doi: 10.1016/j.neuropharm.2021.108490. Epub 2021 Feb 16.