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      Mechanisms of fibrinolysis in chronic liver injury (with special emphasis on MMPs and TIMPs).

      Zeitschrift für Gastroenterologie
      Animals, Apoptosis, Chronic Disease, Fibrinolysis, Humans, Liver Diseases, metabolism, pathology, Liver Regeneration, Matrix Metalloproteinases, Models, Biological, Tissue Inhibitor of Metalloproteinases

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          Abstract

          Regeneration from liver fibrosis is characterized by four essential events: 1. eradication of pathological agents, 2. apoptosis of activated hepatic stellate cells, 3. remodeling of extracellular matrix, and 4. regeneration of parenchyma and liver function. The temporal and spatial regulation of matrix metalloproteinase (MMP) activity and expression of their specific inhibitors, the tissue inhibitors of metalloproteinases (TIMPs), play a pivotal role in matrix remodeling during hepatic fibrogenesis and recovery. According to current knowledge, the main topics and mechanisms in regeneration from hepatic fibrosis with special emphasis on MMPs and TIMPs are presented. MMP and TIMP expression patterns during hepatic fibrogenesis and fibrolysis, specific characteristics like regulation, expression of cell types, gene expression (RNA/protein), and the underlying disease are summarized. Studies presenting a time course for MMP and TIMP expression during recovery from hepatic fibrosis were taken into consideration to point out a synchronizing behavior in the expression pattern.

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