Liu XJ, Liu BY, Kong JY, Wang FP, Sun H, Xie WY, Wang HW, Shen B, Du YJ. Effect of P38MAPK inhibitor on endoplasmic reticulum stress-induced hepatocyte apoptosis in rats with acute liver failure.
Shijie Huaren Xiaohua Zazhi 2014;
22:3625-3631. [DOI:
10.11569/wcjd.v22.i24.3625]
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Abstract
AIM: To observe the effect of P38MAPK inhibitor SB203580 on Caspase12 protein expression and apoptosis of hepatocytes in rats with acute hepatic failure, and to explore the mechanism underlying its protective effect on acute hepatic failure.
METHODS: Seventy-two healthy Wistar rats were randomly divided into three groups: a control group (injected with normal saline), a model group (injected with D-galactosamine/lipopolysaccharide, D-Gal/LPS), and an inhibitor group (injected with D-Gal/LPS + SB203580). Each group was further divided into three subgroups for testing at different time points, with 8 rats in each subgroup. Blood samples were collected for the determination of alanine aminotransferase (ALT) and total bilirubin (TBIL). HE staining was performed to observe the liver pathological changes. Immunohistochemical assay was performed to detect the expression of Caspase12 protein. The diphenylamine method was used to detect the apoptosis rate.
RESULTS: The liver function, Caspase12 protein expression and apoptosis rate in the inhibitor group at 12 h were lower than those in the model group. Caspase12 protein expression at 18 h in the inhibitor group had no significant difference with that in the model group, while the apoptosis rate was significantly higher in the inhibitor group than in the model group. Necrosis occurred in the model group at 12 h, and in the inhibitor group at 18 h.
CONCLUSION: P38MAPK inhibitor SB203580 can reduce the expression of Caspase12 protein, inhibit the endoplasmic reticulum stress-mediated hepatocyte apoptosis, reduce the necrosis of liver cells and play a protective effect against acute hepatic failure.
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