Introduction: Juvenile dermatomyositis (JDM) is a systemic disease that affects children’s proximal musculature and skin. The ulcerated stage of the disease is a therapeutic challenge.
Objective: To evaluate the improvement of ulcerated stage of JDM caused by the use of cell therapy.
Methods: Co-culture of autologous fibroblasts and keratinocytes, application of these cells in ulcers in conjunction with fibrin glue, and placement of chitosan-alginate or chitosan-xanthan membrane on the lesions.
Results: Less than 12 hours after therapy, the patient reported complete cessation of pain and, within 2 days, healing tissue emerged. Some of the ulcers were almost completely healed by the end of the 1st week, and some of the calcinoses disappeared. This technique does not cure the disease, however it improves the patient’s quality of life, and it is possible to cryopreserve healthy cells to treat new lesions. Given the fact that the cells are of autologous origin, the risk of rejection is eliminated. Furthermore, this procedure does not require debridement of the lesions or hospitalization.
Conclusions: The application of autologous cultures of fibroblasts and keratinocytes in ulcers is already considered an effective treatment in patients with burns and other skin wounds, and has now also been proven effective in the treatment of wounds in JDM.

Keywords: Calcinosis; Cell-and tissue-based therapy; Dermatomyositis; Fibroblasts; Keratinocytes; Polysaccharides; Wound healing