PMID- 31219369 OWN - NLM STAT- MEDLINE DCOM- 20200812 LR - 20200812 IS - 1461-7285 (Electronic) IS - 0269-8811 (Linking) VI - 33 IP - 9 DP - 2019 Sep TI - Effects of MDMA on neuroplasticity, amyloid burden and phospho-tau expression in APPswe/PS1dE9 mice. PG - 1170-1182 LID - 10.1177/0269881119855987 [doi] AB - BACKGROUND: 3,4-Methylenedioxymethamphetamine (MDMA) is still one of the most consumed drugs by adolescents. Its abuse is related with cognitive impairment, which seems due to maladaptive plasticity and neural stress. In turn, new hypotheses suggest that Alzheimer's disease (AD) may be promoted by neural stressors. AIMS AND METHODS: To test if there is an increase in vulnerability to AD after chronic MDMA consumption, we investigated the effects of this drug on recognition memory and its neurotoxic and neuroplastic effects in a transgenic mouse model of presymptomatic familiar AD (APP/PS1 dE9, Tg). RESULTS: MDMA-treated animals showed recognition memory deficits, regardless of genotype, which were accompanied by changes in plasticity markers. Tg mice showed an impaired expression of Arc compared with wild-type animals, but exposure to MDMA induced an increase in the expression of this factor of the same percentage in both genotypes. However, the expression of c-fos, BDNF and p-CREB was not significantly altered by MDMA treatment in Tg mice. Although Tg mice had higher free choline levels than wild-type mice (about 123%), MDMA did not modify these levels in any case, ruling out any specific effect of this drug on the acetylcholine pathway. MDMA treatment significantly increased the presence of cortical amyloid plaques, as well as Abeta40, Abeta42 and secreted APPbeta levels in Tg mice. These plaques were accompanied by increased tau phosphorylation (S199), which does not seem to occur via the canonic pathway involving AKT, CDK5 or GSK3beta. CONCLUSIONS: The present results support previous evidences that MDMA can contribute to the amyloid cascade. FAU - Abad, Sonia AU - Abad S AD - Unitat de Farmacologia I Farmacognosia, Facultat de Farmacia, Institut de Biomedicina IBUB, Universitat de Barcelona, Barcelona, Spain. FAU - Ramon-Duaso, Carla AU - Ramon-Duaso C AD - Unitat de Farmacologia I Farmacognosia, Facultat de Farmacia, Institut de Biomedicina IBUB, Universitat de Barcelona, Barcelona, Spain. FAU - Lopez-Arnau, Raul AU - Lopez-Arnau R AD - Unitat de Farmacologia I Farmacognosia, Facultat de Farmacia, Institut de Biomedicina IBUB, Universitat de Barcelona, Barcelona, Spain. FAU - Folch, Jaume AU - Folch J AD - Unitat de Bioquimica i Biotecnologia, Facultat de Medicina i Ciencies de la Salut, Universitat Rovira i Virgili, Reus, Spain. AD - Centros de Investigacion Biomedica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. FAU - Pubill, David AU - Pubill D AD - Unitat de Farmacologia I Farmacognosia, Facultat de Farmacia, Institut de Biomedicina IBUB, Universitat de Barcelona, Barcelona, Spain. FAU - Camarasa, Jordi AU - Camarasa J AD - Unitat de Farmacologia I Farmacognosia, Facultat de Farmacia, Institut de Biomedicina IBUB, Universitat de Barcelona, Barcelona, Spain. FAU - Camins, Antoni AU - Camins A AD - Unitat de Farmacologia I Farmacognosia, Facultat de Farmacia, Institut de Biomedicina IBUB, Universitat de Barcelona, Barcelona, Spain. AD - Centros de Investigacion Biomedica en Red de Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain. FAU - Escubedo, Elena AU - Escubedo E AUID- ORCID: 0000-0002-5078-366X AD - Unitat de Farmacologia I Farmacognosia, Facultat de Farmacia, Institut de Biomedicina IBUB, Universitat de Barcelona, Barcelona, Spain. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190620 PL - United States TA - J Psychopharmacol JT - Journal of psychopharmacology (Oxford, England) JID - 8907828 RN - 0 (Amyloid beta-Peptides) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Alzheimer Disease/metabolism MH - Amyloid beta-Peptides/*metabolism MH - Animals MH - Brain/drug effects/metabolism MH - Cognitive Dysfunction/chemically induced/metabolism MH - Disease Models, Animal MH - Humans MH - Male MH - Memory Disorders/chemically induced/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - N-Methyl-3,4-methylenedioxyamphetamine/*pharmacology MH - Neuronal Plasticity/*drug effects MH - Phosphorylation/*drug effects OTO - NOTNLM OT - Alzheimer's disease OT - MDMA OT - amyloid plaques OT - memory OT - mouse model EDAT- 2019/06/21 06:00 MHDA- 2020/08/13 06:00 CRDT- 2019/06/21 06:00 PHST- 2019/06/21 06:00 [pubmed] PHST- 2020/08/13 06:00 [medline] PHST- 2019/06/21 06:00 [entrez] AID - 10.1177/0269881119855987 [doi] PST - ppublish SO - J Psychopharmacol. 2019 Sep;33(9):1170-1182. doi: 10.1177/0269881119855987. Epub 2019 Jun 20.