Immunohistochemical detection of phosphorylated form of extracellular signal-regulated kinase 1/2 in rat vestibular nuclei following hemorrhagic hypotension.
Neurosci Lett
; 360(1-2): 49-52, 2004 Apr 22.
Article
em En
| MEDLINE
| ID: mdl-15082176
ABSTRACT
The purpose of this study was to evaluate the expression of the phosphorylated form of extracellular-regulated protein kinase 1/2 (pERK1/2), which is one of the major regulatory factors for transcription of the c-fos oncogene in neurons, within the vestibular nuclei (VN) of rats following acute arterial hypotension. Following acute arterial hypotension induced by rapid hemorrhage, a significant number of pERK1/2-immunoreactive neurons appeared bilaterally in the caudal aspect of the medial and inferior VN. No labeling of pERK1/2 was observed in the lateral VN. The peak expression of pERK1/2-immunoreactive neurons in these nuclei occurred within 5 min after hemorrhage. In bilaterally labyrinthectomized rats, the appearance of pERK1/2-immunoreactive neurons was eliminated in the VN. These results suggest that, following acute hypotension, afferent signals from the peripheral vestibular receptors are required for activation of extracellular signal-regulated kinase 1/2 in the VN.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Núcleos Vestibulares
/
Proteína Quinase 1 Ativada por Mitógeno
/
Hemorragia
/
Hipotensão
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
Neurosci Lett
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Coréia do Sul