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1 Departments of Medicine and Biochemistry and Biophysics, University of North Carolina, Chapel Hill, North Carolina 27599-7080; and 2 Department of Gastroenterology and Hepatology, Medizinische Hochschule Hannover, 30625 Hannover, Germany
Tumor necrosis
factor-
(TNF-
) functions as a two-edged sword in the liver.
TNF-
is required for normal hepatocyte proliferation during liver
regeneration. It functions both as a comitogen and to induce the
transcription factor nuclear factor-
B, which has antiapoptotic
effects. On the other hand, TNF-
is the mediator of hepatotoxicity
in many animal models, including those involving the toxins
concanavalin A and lipopolysaccharide. TNF-
has also been implicated
as an important pathogenic mediator in patients with alcoholic liver
disease and viral hepatitis.
tumor necrosis factor receptor; concanavalin A; lipopolysaccharide; liver regeneration; viral hepatitis; alcoholic liver disease; fulminant hepatic failure
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