Abstract
Objective To investigate the expression of early growth response protein 1 (Egr-1),NGFI-A binding protein 2 (Nab2) and caveolin 1 (Cav-1) in normal skin,flat-cicatrix and hypertrophic scar,and explore its role in the formation of hypertrophic scar.Methods The expression of Egr-1,Nab2 and Cav-1 protein in 9 normal skin tissues,8 flat-cicatrix tissues and 9 hypertrophic scar tissues were examined with immunohistochemistry SP method and were analyzed statistically.Results The expression of Egr-1 in epidermal cells of hypertrophic scar was significantly higher than that in normal skin and flat scar tissue.The expression of Egr-1 increased in the course of scar proliferation.The distribution patterns of Nab2 were different from Egr-1.The expression of Egr-1 was increased,while expression of Nab2 was decreased.The expression of Cav-1 in normal skin and flat-cicatrix was significantly higher than that in hypertrophic scar.Conclusions The expression of Egr-1,Nab2 and Cav-1 is closely related to the formation of hypertrophic scar,and the up-regulated expression of Egr-1 and the deficient expression of Nab2 and Cav-1 may be the indicators of the progress of formation of hypertrophic scar.
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