Novel mechanisms in chemically induced hepatotoxicity 1

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Abstract
This review focuses on cellular events that modulate hepatotoxicity subsequent to initial liver insult. Cellular events that determine the nature and extent of hepatotoxic injury and the ultimate outcome of that injury are also discussed. The roles of cell types other than hepatocytes, hepatocyte organelle-specific processes, and regeneration in progression or recovery from liver injury are emphasized. Leukocyte activities are key events in two distinct hepatotoxicities. Neutrophil-mediated, periportal inflammation appears to play a primary role in progression of alpha-naphthylisothiocyanate-induced cholangiolitic hepatitis. However, a humorally mediated autoimmune response to protein adducts that occurs after anesthesia is critical in onset of halothane-induced hepatitis. New insights into specific events at the hepatocyte level are also emerging. Although reducing gap junctional communication between hepatocytes can protect against progression of liver injury, down-regulation of the subunit proteins (co...

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