Effects of sevoflurane on tight junction protein expression and PKC-alpha translocation after pulmonary ischemia-reperfusion injury
Experimental & Molecular Medicine
;
: e167-2015.
Artigo
em Inglês
| WPRIM
| ID: wpr-30205
ABSTRACT
Pulmonary dysfunction caused by ischemia-reperfusion injury is the leading cause of mortality in lung transplantation. We aimed to investigate the effects of sevoflurane pretreatment on lung permeability, tight junction protein occludin and zona occludens 1 (ZO-1) expression, and translocation of protein kinase C (PKC)-alpha after ischemia-reperfusion. A lung ischemia-reperfusion injury model was established in 96 male Wistar rats following the modified Eppinger method. The rats were divided into four groups with 24 rats in each group a control (group C), an ischemia-reperfusion group (IR group), a sevoflurane control group (sev-C group), and a sevoflurane ischemia-reperfusion group (sev-IR group). There were three time points in each group ischemic occlusion for 45 min, reperfusion for 60 min and reperfusion for 120 min; and there were six rats per time point. For the 120-min reperfusion group, six extra rats underwent bronchoalveolar lavage. Mean arterial pressure (MAP) and pulse oxygen saturation (SpO2) were recorded at each time point. The wet/dry weight ratio and lung permeability index (LPI) were measured. Quantitative RT-PCR and Western blot were used to measure pulmonary occludin and ZO-1, and Western blot was used to measure cytosolic and membranous PKC-alpha in the lung. Lung permeability was significantly increased after ischemia-reperfusion. Sevoflurane pretreatment promoted pulmonary expression of occludin and ZO-1 after reperfusion and inhibited the translocation of PKC-alpha. In conclusion, sevoflurane pretreatment alleviated lung permeability by upregulating occludin and ZO-1 after ischemia-reperfusion. Sevoflurane pretreatment inhibited the translocation and activation of PKC-alpha, which also contributed to the lung-protective effect of sevoflurane.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
RNA Mensageiro
/
Permeabilidade Capilar
/
Traumatismo por Reperfusão
/
Regulação da Expressão Gênica
/
Ratos Wistar
/
Anestésicos Inalatórios
/
Transporte Proteico
/
Proteína Quinase C-alfa
/
Proteína da Zônula de Oclusão-1
/
Pulmão
Limite:
Animais
Idioma:
Inglês
Revista:
Experimental & Molecular Medicine
Ano de publicação:
2015
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS