Studies on the Efficacy of Single and Twice Application of Mesenchymal Stem Cells in Full Thickness Cutaneous Wound Healing

Background: A lot of research has been done in the field of wound healing utilising stem cell therapy. This study was conducted to compare the efficacy of single and twice application of mesenchymal stem cells for cutaneous wound healing. Methods: The present study was done on 18 guinea pigs and a 2.5. 2.5 cm(2) full-thickness skin wound was created on the dorsum of each under standard anesthetic protocol. Animals were divided into 3 groups having 6 animals in each. The animals of group I were administered phosphate buffer saline (PBS) subcutaneously on day 0, group II received 1.106 mesenchymal stem cells (MSCs) in PBS subcutaneously on day 0 and group III received 1.106 MSCs in PBS subcutaneously on day 0 and again at day 3, at wound margins. Clinical, photographic, histopathological and histochemical parameters were recorded for each animal. Result: An overall gross and histopathological evaluation suggested early wound closer, better tissue granulation, early orientation of fibrocytes and collagen fibers, revealing a superior quality healing in animals of group III as compared to rest of the groups. From the above study it was concluded that twice application of MSCs leads to faster and qualitatively better healing.