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- W2989614779 abstract "Acute liver injury can be caused by oxidative stress within a short period and is a common pathway to many liver diseases. The liver is vulnerable to reactive oxygen species (ROS) and free radical-mediated disorders. β-arrestin2 was initially discovered to be a negative regulator of G protein-coupled receptor signaling. Recently, β-arrestin2 has been found to act as a multifunctional adaptor protein and play new roles in regulating intracellular signaling networks. However, the role of β-arrestin2 in the pathogenesis of acute liver injury is unclear. In this study, we hypothesize that β-arrestin2 regulates acute liver injury via modulation of oxidative stress. β-arrestin2 knockout mice were used to investigate the impacts of β-arrestin2 on carbon tetrachloride (CCl4)-induced acute liver injury and oxidative stress. Results here suggested that β-arrestin2 deficiency decreased serum activities of aminotransferase and alleviated liver injury induced by CCl4 injection as compared with wildtype mice. β-arrestin2 knockout mice exhibited stronger tolerance in oxidative stress compared with wild-type mice, which was demonstrated by decreased ROS level and increased superoxide dismutase (SOD) and glutathione (GSH) in the liver. Furthermore, β-arrestin2 deficiency significantly inhibited NOX4 (a major source of ROS) expression and the activation of the extracellular regulated kinase (ERK) and, c-Jun NH2-terminal kinase (JNK) pathways. These results suggest that β-arrestin2 deficiency protects against CCl4-induced acute liver injury through attenuating oxidative damage and decreased ERK and JNK phosphorylation." @default.
- W2989614779 created "2019-12-05" @default.
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- W2989614779 date "2020-02-01" @default.
- W2989614779 modified "2023-10-05" @default.
- W2989614779 title "Depletion of β-arrestin 2 protects against CCl4-induced liver injury in mice" @default.
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- W2989614779 doi "https://doi.org/10.1016/j.bbrc.2019.11.093" @default.
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