Our study indicated that fractional CO(2) resulted in clinical improvement of mature burn scar. Alteration of types I and III procollagen, MMP-1, TGF-β2, -β3, bFGF, as well as miRNAs miR-18a and miR-19a expression may be responsible for the clinical improvement after treatment. Our finding may have implications for novel treatments and further our understanding of fractional CO(2) laser treatment.
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