Possibilities of using allogeneic mesenchymal stem cells and wound dressings based on aliphatic copolyamide in microautodermoplasty

Background. The treatment of victims with wound defects is an urgent problem of clinical medicine that doctors of various specialties, mainly surgeons and traumatologists, must face. Regardless of the etiology of the traumatic agent, the wound process is always subjected to fundamental pathophysiological processes. Despite the advances made by medical science in the local treatment of wounds (cell technology, modern wound coverings, and others), surgical procedures remain the main methods, and the search for new techniques to optimize reparative regeneration continues. This ongoing search indicates the absence of a universal algorithm for treating such defects. This lack of a universal treatment algorithm is of particular importance for assisting victims with extensive defects, which often leads to a shortage of donor resources. Aim. The aim of this study was to increase the efficiency of microautodermoplasty due to the use of allogeneic mesenchymal stem cells and wound dressings based on aliphatic copolyamide. Materials and methods. This paper presents the results of an experimental study involving 50 rats. All animals were divided into groups considering the choice of the method of the local treatment. The experimental wound was modeled according to its original technique. The evaluation of the effectiveness of the analyzed methods was performed using planimetric and histological research methods, and by calculating the healing index. Results. The most effective methods for treating experimental wounds using microautodermoplasty (MADP) are wound dressings based on aliphatic copolyamide (CoPA) and adipogenic mesenchymal stem cells (AMSC). By 28 days of treatment after performing MADP + CoPA wound dressings + AMSC, it was possible to reduce the defect area by 16 times compared with the control, and the healing index was the maximum value among all methods 12.5 units. The high regenerative potential was also confirmed by the results of the histological examination. The worst results were found in the MADP group with AMSK that did not cover the wounds with skin or wound dressing. Conclusion. The introduction of the analyzed methods into clinical practice will improve the results of treatment of patients with wound defects of various etiologies.