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The priming phase of liver regeneration following partial hepatectomy occurs outside of hepatocytes in the ECM and it prepares the liver for regeneration and hepatocyte proliferation. [5] During proliferation phase of liver regeneration, there is a communication between β-catenin, the Notch signaling pathway, and two growth factors, EGF and HGF.
Michalopoulos has contributed to the field of pathology through his work on liver function, regeneration, and carcinogenesis.He has utilized various experimental models, such as hepatocyte cultures, hepatic organoids, established cell lines, studies on liver regeneration after partial hepatectomy, examinations of regeneration through progenitor cell pathways, investigations into liver ...
Hepatocyte growth factor (HGF) or scatter factor (SF) is a paracrine cellular growth, motility and morphogenic factor. It is secreted by mesenchymal cells and targets and acts primarily upon epithelial cells and endothelial cells , but also acts on haemopoietic progenitor cells and T cells .
Regeneration begins within hours of occlusion and factors important to this response include hepatocyte growth factor, epidermal growth factor, insulin, IL-6 and TNF-alpha, among others. [7] [8] The expected increase in FLR is approximately 10 percent; greater increases after four to six weeks can be observed, albeit at a lower rate of growth ...
Hepatocyte growth factor receptor (HGF receptor) [5] [6] is a protein that in humans is encoded by the MET gene.The protein possesses tyrosine kinase activity. [7] The primary single chain precursor protein is post-translationally cleaved to produce the alpha and beta subunits, which are disulfide linked to form the mature receptor.
Met tyrosine kinase is the receptor for hepatocyte growth factor (HGF), also known as scatter factor (SF). HGF is mostly expressed on epithelial cells and mesenchymal cells, for example smooth muscle cells and fibroblasts. [10] [11] HGF is normally active in wound healing, liver regeneration, embryo and normal mammalian development, [10] organ ...
A hepatocyte is a cell of the main parenchymal tissue of the liver. Hepatocytes make up 80% of the liver's mass. These cells are involved in: Protein synthesis; Protein storage; Transformation of carbohydrates; Synthesis of cholesterol, bile salts and phospholipids; Detoxification, modification, and excretion of exogenous and endogenous substances
In the adult liver, most of the cells are binucleated, and most of the hepatocytes are tetraploid, which means that they have four times the amount of normal DNA. Their average lifespan is from approximately five months, and hepatocytes have a significant regeneration capacity after parenchymal loss by toxic processes, diseases or surgeries.