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Effect of chronic noise exposure on expression of N-methyl-D-aspartic acid receptor 2B and Tau phosphorylation in hippocampus of rats / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences ; (12): 163-168, 2013.
Artigo em Inglês | WPRIM | ID: wpr-320355
ABSTRACT
<p><b>OBJECTIVE</b>To study the effect of chronic noise exposure on expression of N-methyl-D-aspartic acid receptor 2B (NR2B) and tau phosphorylation in hippocampus of rats.</p><p><b>METHODS</b>Twenty-four male SD rats were divided in control group and chronic noise exposure group. NR2B expression and tau phosphorylation in hippocampus of rats were detected after chronic noise exposure (100 dB SPL white noise, 4 h/d×30d) and their mechanisms underlying neuronal apoptosis in hippocampus of rats with TUNEL staining.</p><p><b>RESULTS</b>The NR2B expression decreased significantly after chronic noise exposure which resulted in tau hyperphosphorylation and neural apoptosis in hippocampus of rats. Immunohistochemistry showed that the tau hyperphosphorylation was most prominent in dentate gyrus (DG) and CA1 region of rat hippocampus.</p><p><b>CONCLUSION</b>The abnormality of neurotransmitter system, especially Glu and NR2B containing NMDA receptor, and tau hyperphosphorylation in hippocampus of rats, may play a role in chronic noise-induced neural apoptosis and cognition impairment.</p>
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Fosforilação / Proteínas tau / Ratos Sprague-Dawley / Apoptose / Receptores de N-Metil-D-Aspartato / Biologia Celular / Hipocampo / Metabolismo / Neurônios / Ruído Limite: Animais Idioma: Inglês Revista: Biomedical and Environmental Sciences Ano de publicação: 2013 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Fosforilação / Proteínas tau / Ratos Sprague-Dawley / Apoptose / Receptores de N-Metil-D-Aspartato / Biologia Celular / Hipocampo / Metabolismo / Neurônios / Ruído Limite: Animais Idioma: Inglês Revista: Biomedical and Environmental Sciences Ano de publicação: 2013 Tipo de documento: Artigo