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Effects of Hair Follicle Stem Cells on Partial-Thickness Burn Wound Healing and Tensile Strength
Azar Babakhani , Malihe Nobakht * , Hamidreza Pazoki Torodi , Mostafa Dahmardehei , Paria Hashemi , Javad Mohajer Ansari , Parisa Ramhormozi , Abazar Yari , Fatemeh Heidari
Abstract:  
Background: The recent improvements in wound healing have led to new strategies in regenerative medicine. Burn wound healing is an important subject in the field of tissue regeneration and has multiple indication for stem cell therapy. Hair follicle stem cells (HFSCs) are a highly promising source of stem cells for healing use, as these cells are accessible, active and pluripotent adult stem cells. Methods: HFSCs of the rat whisker were isolated, cultured, and labeled with DiI. Flow cytometry method was used for detecting special markers of HFSCs. Deep partial-thickness burn wound was created, and labeled HFSCs were injected around the wound bed. Wound closure was recorded via digital photographs. The inflicted rats were sacrificed at 3, 7, or 14 days post burn and used for subsequent histological and tensiometry analysis. Results: Our results indicated that HFSCs were positive for Nestin and CD34 markers, but negative for Kr15. Morphological and histological photographs revealed that wound closure rate was accelerated in stem cell-treated group compared with other groups. In addition, faster re-epithelialization and collagen deposition were observed. The immunohistochemical analysis suggested that CD31 expression and vascular density enhanced in the stem cell-treated group. Further, tissue tensile strength increased in HFSCs-treated rats in comparison to the control group. Conclusion: The present study demonstrates that HFSCs could accelerate burn wound healing as well as tensile strength in rats.
Keywords: Burn wound healing, Epithelization, Tensile strength, Wound healing
Full-Text [PDF 968 kb]      
Type of Study: Full Length | Subject: Tissue Engineering and Cell Biology
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