Skin grafting is a standard treatment for deep wounds, but care of the donor site after transplantation is very important. The means of accelerating wound healing can increase overall patient satisfaction. In recent years, cytokine therapy has been an important strategy to promote tissue repair.Mesenchymal stem cells (MSC) have been considered the star cells that promote tissue repair. It works mainly through paracrine. Many biological effectors, including IGF-1, vascular endothelial growth factor (VEGF), TGF-β1, and hepatocyte growth factor (HGF), have been found and reported in various MSC conditioned media (MSC-CM), And play a role in promoting tissue repair and regeneration. In here, we aim to explore the MSC-CM-derived pleiotropic factor in treating donor sites and further evaluate its safety and effectiveness

Inclusion Criteria:

Mainly mild to moderate burns, III ° burn area is less than 20% (trauma factor is thermal burn); Thick-thickness skin (thickness 0.2-0.3mm), donor area and medium-thickness skin (thick 0.3-0.5mm) for the skin area study separately; Psychologically stable and able to complete the test process-

Exclusion Criteria:

History of clotting disorders, uncontrolled diabetes; Drug abuse, excessive drinking, malignant or autoimmune diseases, chemotherapy and immunosuppressive therapy; Significant local infection or combined systemic infection; Patients with severe heart, lung, liver, kidney, blood system and mental and nervous system diseases; Women during pregnancy and lactation-

Need to contact the researcher and open sharing after the researcher's consent

One year after clinical trial

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