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Histopathologically, FMTs consist of neoplastic connective tissue cells which have differented into cells that have microscopic appearances resembling fibroblasts and/or myofibroblasts. The fibroblastic cells are characterized as spindle-shaped cells with inconspicuous nucleoli that express vimentin , an intracellular protein typically found in ...
Myofibroblasts upregulate the expression of fibronectin, collagens, and hyaluronic acid during and after their differentiation from fibroblasts. Among these, the EDA isoform of fibronectin (EDA-FN), and collagen type I ( COL1A1 / COL1A2 ) are typical markers of myofibroblast-dependent synthesis of pro-fibrotic extracellular matrix.
Cardiac fibrosis commonly refers to the excess deposition of extracellular matrix in the cardiac muscle, but the term may also refer to an abnormal thickening of the heart valves due to inappropriate proliferation of cardiac fibroblasts. [1] Fibrotic cardiac muscle is stiffer and less compliant and is seen in the progression to heart failure.
The normal fibroblast cells receive a hormone signal from nearby cancer cells, indicating that it must become activated, and is thus classed as a CAF. [2] It is unclear why normal fibroblasts transition into CAFs but it has been found that by adding transforming growth factor-β to fibroblasts in culture they start to display features of CAFs. [26]
Fibroblasts can also migrate slowly over substratum as individual cells, again in contrast to epithelial cells. While epithelial cells form the lining of body structures, fibroblasts and related connective tissues sculpt the "bulk" of an organism. The life span of a fibroblast, as measured in chick embryos, is 57 ± 3 days. [4]
Cardiac fibroma, also known as cardiac fibromatosis, cardiac fibrous hamartoma, fibroelastic hamartoma of heart and fibroma of heart is the second highest type of primary cardiac tumor seen in infants and children. [1] This benign tumor made by connective tissue and fibroblast is largely observed in the ventricles of the heart. [2]
Heart cancer is an extremely rare form of cancer that is divided into primary tumors of the heart and ... Cardiac treatment is usually confined to palliative measures
Fibroblast-like synoviocytes are cells of mesenchymal origin that display many characteristics common with fibroblasts, such as expression of several types of collagens and protein vimentin, a part of cytoskeletal filaments. Unlike fibroblasts, fibroblast-like synoviocytes also secrete unique proteins, that are normally absent in other ...