Xing Guo1, Bo Xia2, Xiao-Bo Lu2, Zhong-Jie Zhang2, Zhong Li2, Wei-Ling Li3, Ai-Bing Xiong1, Li Deng4, Mei-Yun Tan2, Yong-Can Huang5,6. 1. a Department of Burns and Plastic Surgery , The Affiliated Hospital of Southwest Medical University , Luzhou , China. 2. b Department of Bone and Joint Surgery , The Affiliated Hospital of Southwest Medical University , Luzhou , China. 3. c Department of Oncology , The Affiliated Hospital of Southwest Medical University , Luzhou , China. 4. d Laboratory of Stem Cell and Tissue Engineering, State Key Laboratory of Biotherapy , West China Hospital, Sichuan University , Chengdu , China. 5. e Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine , The University of Hong Kong , Hong Kong SAR , China. 6. f Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies , Orthopaedics Research Center, Peking University Shenzhen Hospital , Shenzhen , China.
Abstract
PURPOSE: Regenerative medicine provides many treatments for burn wounds, of which cell-seeded substitutes are encouraging for large and deep burns. To assess the feasibility of mesenchymal stem cell (MSC)-seeded small intestinal submucosa (SIS) to repair the deep partial-thickness burns, a rat study was performed. MATERIALS & METHODS: The burn model was created by contacting the dorsal surface directly with boiled water for 10 seconds. MSCs at passage 3 were seeded on the SIS before implantation. Three days after burn injury, the grafts were implanted onto the burn area. At 3, 7, 14 and 21 days post implantation, gross observation and histological assessments were performed. RESULTS: SIS alone and MSC-seeded SIS were able to accelerate the burn wound closure by enhancing granulation tissue formation, increasing wound maturity, improving revascularization, and inducing the proliferation of neo-epidermal cells. Additionally, MSC-seeded SIS was much more effective than SIS alone for the repair of deep partial-thickness burns. CONCLUSION: Both SIS and MSC-seeded SIS were able to repair the large and deep burn wounds and the loaded MSCs possessed positive effects to accelerate the wound closure in a rat model.
PURPOSE: Regenerative medicine provides many treatments for burn wounds, of which cell-seeded substitutes are encouraging for large and deep burns. To assess the feasibility of mesenchymal stem cell (MSC)-seeded small intestinal submucosa (SIS) to repair the deep partial-thickness burns, a rat study was performed. MATERIALS & METHODS: The burn model was created by contacting the dorsal surface directly with boiled water for 10 seconds. MSCs at passage 3 were seeded on the SIS before implantation. Three days after burn injury, the grafts were implanted onto the burn area. At 3, 7, 14 and 21 days post implantation, gross observation and histological assessments were performed. RESULTS: SIS alone and MSC-seeded SIS were able to accelerate the burn wound closure by enhancing granulation tissue formation, increasing wound maturity, improving revascularization, and inducing the proliferation of neo-epidermal cells. Additionally, MSC-seeded SIS was much more effective than SIS alone for the repair of deep partial-thickness burns. CONCLUSION: Both SIS and MSC-seeded SIS were able to repair the large and deep burn wounds and the loaded MSCs possessed positive effects to accelerate the wound closure in a rat model.
Entities:
Keywords:
burns; mesenchymal stem cells; small intestinal submucosa; wound closure