Glutamate transporter 1-mediated antidepressant-like effect in a rat model of chronic unpredictable stress / 华中科技大学学报(医学)(英德文版)
Journal of Huazhong University of Science and Technology (Medical Sciences)
;
(6): 838-844, 2014.
Artigo
em Inglês
| WPRIM
| ID: wpr-331135
ABSTRACT
In recent years, more attention has been paid to the role of the glutamate transporter 1 (GLT-1, EAAT2) in major depressive disorder (MDD). However, experimental data on brain GLT-1 levels are, to some extent, inconsistent in human postmortem and animal studies. These discrepancies imply that the role of GLT-1 in the pathophysiology of MDD and the action of antidepressants remain obscure. This work was designed to study the impact of chronic unpredictable stress (CUS) for 2 sessions per day for 35 days and four weeks of fluoxetine (FLX) on depressive-like behaviors in rats, as well as the concomitant expression of the GLT-1 protein in the hippocampus. Behavioral changes were assessed by the sucrose preference and open field tests. GLT-1 levels were detected by immunohistchemistry and Western blot analysis. Our study demonstrated that the animals exposed to CUS showed depressive-like behaviors and exhibited a significant decrease in GLT-1 expression in the hippocampus. Chronic FLX treatment reversed the behavioral deficits and the CUS-induced decrease in GLT-1 levels. Taken together, our results support the reduction of GLT-1 in human postmortem studies in MDD and suggest that GLT-1 may be involved in the antidepressant activity of FLX. Our studies further support the notion that GLT-1 is an attractive candidate molecule associated with the fundamental processes of MDD and may be a potential, and novel pharmacological target for the treatment of MDD.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Farmacologia
/
Estresse Psicológico
/
Comportamento Animal
/
Encéfalo
/
Fluoxetina
/
Doença Crônica
/
Ratos Sprague-Dawley
/
Antidepressivos de Segunda Geração
/
Transportador 2 de Aminoácido Excitatório
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Journal of Huazhong University of Science and Technology (Medical Sciences)
Ano de publicação:
2014
Tipo de documento:
Artigo
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