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  • Title: Distribution of tenascin in healing incision, excision and laser wounds.
    Author: Luomanen M, Virtanen I.
    Journal: J Oral Pathol Med; 1993 Jan; 22(1):41-5. PubMed ID: 7678297.
    Abstract:
    The distribution of the extracellular matrix glycoprotein, tenascin, was studied in normal mucosa and during healing of scalpel incised or excised and CO2 laser-wounded rat tongue dorsal mucosa in 51 male Sprague-Dawley rats over a period of 21 days. A polyclonal antibody specific for tenascin was applied in indirect immunofluorescence microscopy. In normal mucosa tenascin was sparsely distributed in a discontinuous manner at the tips of the connective tissue papillae in association with the basement membrane (BM) and in the walls of the capillaries. In all the healing wounds there was a marked increase in the distribution of tenascin, particularly close to the BMs at the wound edges beneath the proliferating and migrating epithelium, and later on during healing in the regenerating connective tissue (CT) area. This expression subsided later on during healing. Laser surgery did not alter the ability of fibroblasts to synthesize tenascin. The transient expression of tenascin in the BMs and CT of the healing wounds suggests that this protein could play an important role in providing ideal conditions for cell movement, and in the deposition and organization of other extracellular matrix (ECM) glycoproteins during tissue repair.
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