Abstract
Radiation enteritis is one of the most common complications of cancer radiotherapy, and the development of new and effective measures for its prevention and treatment is of great importance. Adult bone marrow stromal stem cells (ABMSCs) are capable of self-renewal and exhibit low immunogenicity. In this study, we investigated ABMSC transplantation as a treatment for acute radiation enteritis. We developed a dog model of acute radiation enteritis using abdominal intensity-modulated radiation therapy in a single X-ray dose of 14 Gy. ABMSCs were cultured in vitro, identified via immunofluorescence and flow cytometry, and double labeled with CM-Dil and superparamagnetic iron oxide (SPIO) before transplantation, which took place 48 hours after abdominal irradiation in a single fraction. The dog model of acute radiation enteritis was transplanted with cultured ABMSCs labeled with CM-Dil and SPIO into the mesenteric artery through the femoral artery. Compared with untreated control groups, dogs treated with ABMSCs exhibited substantially longer survival time and improved relief of clinical symptoms. ABMSC transplantation induced the regeneration of the intestinal epithelium and the recovery of intestinal function. Furthermore, ABMSC t...Continue Reading
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