Summary
The cellular and non-cellular components of fibrous septa formed at early and late stages in a sequential model of experimental hepatic fibrosis have been investigated using ultrastructural and immunocytochemical techniques. In the early septa, cells with intermediate features between lobular Ito cells and active fibroblasts were formed. These cells frequently displayed subplasmalemmal microfilaments (myofibroblast-like cells). Macrophages were also present. Scanty typical fibroblasts were present in the late septa. This cellular recruitment might be related to an extracellular glycoprotein-fibronectin-which is at present under investigation as a chemotactic factor for fibroblasts. Strong positivity for fibronectin in early septa and its sharp decrease in late septa seems to support this view. Fibroblasts and/or macrophages are the likely source of fibronectin synthesis.
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Cenacchi, G., Ballardini, G., De Giorgi, L.B. et al. Relationship between connective tissue cells and fibronectin in a sequential model of experimental hepatic fibrosis. Virchows Archiv B Cell Pathol 43, 75–84 (1983). https://doi.org/10.1007/BF02932946
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DOI: https://doi.org/10.1007/BF02932946