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- W2162167805 abstract "Abstract Robust clinical and epidemiologic data support the role of inflammation as a key player in hepatocellular carcinoma (HCC) development. Our previous data showed that gut-derived lipopolysaccharide (LPS) promote HCC development by activating Toll-like receptor 4 (TLR4) expressed on myeloid-derived cells. However, the effects of gut-derived LPS on other types of liver injury models are yet to be studied. The purpose of this study was to determine the importance of gut-derived LPS and TLR4 signaling in a T-cell–mediated hepatitis—Con A–induced hepatitis model, which mimic the viral hepatitis. Reduction of endotoxin using antibiotics regimen or genetic ablation of TLR4 in mice significantly alleviate Con A–induced liver injury by inhibiting the infiltration of T lymphocytes into the liver and the activation of CD4+ T lymphocytes as well as the production of T helper 1 cytokines; in contrast, exogenous LPS can promote Con A–induced hepatitis and CD4+ T cells activation in vivo and in vitro. Reconstitution of TLR4–expressing myeloid cells in TLR4-deficient mice restored Con A–induced liver injury and inflammation, indicating the major cell target of LPS. In addition, TLR4 may positively regulate the target hepatocellular apoptosis via the perforin/granzyme B pathway. These data suggest that gut-derived LPS and TLR4 play important positive roles in Con A–induced hepatitis and modulation of the gut microbiotia may represent a new avenue for therapeutic intervention to treat acute hepatitis induced by hepatitis virus infection, thus to prevent hepatocellular carcinoma. Cancer Prev Res; 5(9); 1090–102. ©2012 AACR." @default.
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- W2162167805 date "2012-09-01" @default.
- W2162167805 modified "2023-09-26" @default.
- W2162167805 title "Gut-Derived Lipopolysaccharide Promotes T-Cell–Mediated Hepatitis in Mice through Toll-Like Receptor 4" @default.
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- W2162167805 doi "https://doi.org/10.1158/1940-6207.capr-11-0364" @default.
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