Summary
The results of immunoperoxidase staining for fibrinogen/fibrin in ethanol- and formaldehyde-fixed, normal and healing arterial tissue are presented. Fibrinogen/fibrin was not observed in the normal aortic wall. The thoracic aorta damaged by a balloon catheter contained fibrinogen/fibrin in all layers of the wall. In the healing aortic wall there was a strong positive reaction in neo-intima, whereas the reaction in media was weak or absent. The staining reaction for fibrinogen/fibrin in formaldehyde-fixed neo-intima covered with aortic smooth muscle cells was strong and almost independent of proteolytic digestion, while such treatment increased the staining intensity for fibrinogen/fibrin in neo-intima covered with endothelium. Our results indicate that an extracellular matrix of fibrin and fibronectin may play a role in migration and proliferation of aortic smooth muscle cells.
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Chemnitz, J., Collatz Christensen, B. Repair in arterial tissue. Vichows Archiv A Pathol Anat 403, 163–171 (1984). https://doi.org/10.1007/BF00695232
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DOI: https://doi.org/10.1007/BF00695232