PMID- 25312280 OWN - NLM STAT- MEDLINE DCOM- 20150715 LR - 20151119 IS - 1873-7064 (Electronic) IS - 0028-3908 (Linking) VI - 89 DP - 2015 Feb TI - Glycine transporters type 1 inhibitor promotes brain preconditioning against NMDA-induced excitotoxicity. PG - 274-81 LID - S0028-3908(14)00366-9 [pii] LID - 10.1016/j.neuropharm.2014.10.003 [doi] AB - Brain preconditioning is a protective mechanism, which can be activated by sub-lethal stimulation of the NMDA receptors (NMDAR) and be used to achieve neuroprotection against stroke and neurodegenerative diseases models. Inhibitors of glycine transporters type 1 modulate glutamatergic neurotransmission through NMDAR, suggesting an alternative therapeutic strategy of brain preconditioning. The aim of this work was to evaluate the effects of brain preconditioning induced by NFPS, a GlyT1 inhibitor, against NMDA-induced excitotoxicity in mice hippocampus, as well as to study its neurochemical mechanisms. C57BL/6 mice (male, 10-weeks-old) were preconditioned by intraperitoneal injection of NFPS at doses of 1.25, 2.5 or 5.0 mg/kg, 24 h before intrahippocampal injection of NMDA. Neuronal death was evaluated by fluoro jade C staining and neurochemical parameters were evaluated by gas chromatography-mass spectrometry, scintillation spectrometry and western blot. We observed that NFPS preconditioning reduced neuronal death in CA1 region of hippocampus submitted to NMDA-induced excitotoxicity. The amino acids (glycine and glutamate) uptake and content were increased in hippocampus of animals treated with NFPS 5.0 mg/kg, which were associated to an increased expression of type-2 glycine transporter (GlyT2) and glutamate transporters (EAAT1, EAAT2 and EAAT3). The expression of GlyT1 was reduced in animals treated with NFPS. Interestingly, the preconditioning reduced expression of GluN2B subunits of NMDAR, whereas did not change the expression of GluN1 or GluN2A in all tested doses. Our study suggests that NFPS preconditioning induces resistance against excitotoxicity, which is associated with neurochemical changes and reduction of GluN2B-containing NMDAR expression. CI - Copyright (c) 2014 Elsevier Ltd. All rights reserved. FAU - Pinto, Mauro Cunha Xavier AU - Pinto MC AD - INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena 190, 30130-100, Belo Horizonte, MG, Brazil; Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena, 190, 30130-100, Belo Horizonte, MG, Brazil. Electronic address: mauroxavier@ufmg.br. FAU - Lima, Isabel Vieira de Assis AU - Lima IV AD - Departamento de Farmacologia, Instituto de Ciencia Biologicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil. FAU - da Costa, Flavia Lage Pessoa AU - da Costa FL AD - INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena 190, 30130-100, Belo Horizonte, MG, Brazil; Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena, 190, 30130-100, Belo Horizonte, MG, Brazil. FAU - Rosa, Daniela Valadao AU - Rosa DV AD - INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena 190, 30130-100, Belo Horizonte, MG, Brazil. FAU - Mendes-Goulart, Vania Aparecida AU - Mendes-Goulart VA AD - Departamento de Bioquimica e Imunologia, Instituto de Ciencia Biologicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil. FAU - Resende, Rodrigo Ribeiro AU - Resende RR AD - Departamento de Bioquimica e Imunologia, Instituto de Ciencia Biologicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil. FAU - Romano-Silva, Marco Aurelio AU - Romano-Silva MA AD - INCT de Medicina Molecular, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena 190, 30130-100, Belo Horizonte, MG, Brazil. FAU - de Oliveira, Antonio Carlos Pinheiro AU - de Oliveira AC AD - Departamento de Farmacologia, Instituto de Ciencia Biologicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, 31270-901, Belo Horizonte, MG, Brazil. FAU - Gomez, Marcus Vinicius AU - Gomez MV AD - Instituto de Ensino e Pesquisa da Santa Casa de Belo Horizonte, R. Domingos Vieira, 590, Belo Horizonte, MG, Brazil. FAU - Gomez, Renato Santiago AU - Gomez RS AD - Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Alfredo Balena, 190, 30130-100, Belo Horizonte, MG, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141013 PL - England TA - Neuropharmacology JT - Neuropharmacology JID - 0236217 RN - 0 (Excitatory Amino Acid Agonists) RN - 0 (Fluoresceins) RN - 0 (Glycine Plasma Membrane Transport Proteins) RN - 0 (N-(3-(4'-fluorophenyl)-3-(4'-phenylphenoxy)-3-(4'-phenylphenoxy)propyl)sarcosine) RN - 0 (fluoro jade) RN - 10028-17-8 (Tritium) RN - 3KX376GY7L (Glutamic Acid) RN - 6384-92-5 (N-Methylaspartate) RN - TE7660XO1C (Glycine) RN - Z711V88R5F (Sarcosine) SB - IM MH - Animals MH - Disease Models, Animal MH - Dose-Response Relationship, Drug MH - Drug Administration Schedule MH - Excitatory Amino Acid Agonists/*toxicity MH - Fluoresceins MH - Gas Chromatography-Mass Spectrometry MH - Gene Expression Regulation/drug effects MH - Glutamic Acid/metabolism MH - Glycine/metabolism MH - Glycine Plasma Membrane Transport Proteins/*antagonists & inhibitors MH - Hippocampus/drug effects/injuries MH - Male MH - Mice MH - Mice, Inbred C57BL MH - N-Methylaspartate/*toxicity MH - *Neurotoxicity Syndromes/etiology/pathology/prevention & control MH - Sarcosine/administration & dosage/*analogs & derivatives MH - Time Factors MH - Tritium/metabolism OTO - NOTNLM OT - Brain preconditioning OT - Glycine transporter type 1 OT - Neuroprotection OT - Neurotransmission EDAT- 2014/10/15 06:00 MHDA- 2015/07/16 06:00 CRDT- 2014/10/15 06:00 PHST- 2014/05/20 00:00 [received] PHST- 2014/09/07 00:00 [revised] PHST- 2014/10/01 00:00 [accepted] PHST- 2014/10/15 06:00 [entrez] PHST- 2014/10/15 06:00 [pubmed] PHST- 2015/07/16 06:00 [medline] AID - S0028-3908(14)00366-9 [pii] AID - 10.1016/j.neuropharm.2014.10.003 [doi] PST - ppublish SO - Neuropharmacology. 2015 Feb;89:274-81. doi: 10.1016/j.neuropharm.2014.10.003. Epub 2014 Oct 13.