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Healing activity of proteolytic fraction (P1G10) from Vasconcellea cundinamarcensis in a cutaneous wound excision model.

The proteolytic enzymes from Vasconcellea cundinamarcensis have demonstrated efficacy to accelerate healing of skin lesions. We report here the efficacy of the proteolytic fraction - P1G10 during repair of excisional wounds in rodent model and analyze possible mediators involved. Using 0.05% P1G10 we observed on day 3rd increased wound contraction accompanied by an increase in activated neutrophils and VEGF relative to the control. On day 7th neutrophils returned to normal levels, and at 0.01% P1G10, an increase in NAG activity used to monitor monocyte/macrophage, was observed. On the other hand, on day 7th, we observed a decrease in TGF-β at 0.05% P1G10, accompanied by an increased transformation of the latent TGF-β to its active form. Also, on day 7th a reduction in MMP-9 activity and the number of apoptotic cells was observed along with an increase in fibroblast levels. Morphometrically, it appears that treatment with P1G10 accelerates the decline of initial inflammatory phase and reduces some unwanted effects likely caused by remaining TGF-β or MMPs, thus enhancing the quality of scar. Overall, these data suggest that the active proteolytic fraction P1G10 enhances the efficacy of repair in excisional cutaneous wounds.

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