BACKGROUND: Autogenous fat grafting has been observed to alleviate the sequelae of chronic radiodermatitis. To date, no study has replicated this finding in an animal model. METHODS: The dorsa of adult wild-type FVB mice were shaved and depilated. The dorsal skin was then distracted away from the body and irradiated (45 Gy). Four weeks after irradiation, 1.5-cc fat or sham grafts were placed in the dorsal subcutaneous space. Gross results were analyzed photometrically. The animals were euthanized at 4 and 8 weeks after fat or sham grafting and their dorsal skin was processed for histologic analysis. RESULTS: Hyperpigmentation and ulceration were grossly improved in fat-grafted mice compared with sham-grafted controls. This improvement manifested histologically in a number of ways. For example, epidermal thickness measurements demonstrated decreased thickness in fat-grafted animals at both time points (20.6 ± 1.5 μm versus 55.2 ± 5.6 μm, p = 0.004; 17.6 ± 1.1 μm versus 36.3 ± 6.1 μm, p = 0.039). Picrosirius red staining demonstrated a diminished scar index in fat-treated animals at both time points as well (0.54 ± 0.05 versus 0.74 ± 0.07, p = 0.034; and 0.55 ± 0.06 versus 0.93 ± 0.07, p = 0.001). CONCLUSION: Fat grafting attenuates inflammation in acute radiodermatitis and slows the progression of fibrosis in chronic radiodermatitis.
BACKGROUND: Autogenous fat grafting has been observed to alleviate the sequelae of chronic radiodermatitis. To date, no study has replicated this finding in an animal model. METHODS: The dorsa of adult wild-type FVB mice were shaved and depilated. The dorsal skin was then distracted away from the body and irradiated (45 Gy). Four weeks after irradiation, 1.5-cc fat or sham grafts were placed in the dorsal subcutaneous space. Gross results were analyzed photometrically. The animals were euthanized at 4 and 8 weeks after fat or sham grafting and their dorsal skin was processed for histologic analysis. RESULTS: Hyperpigmentation and ulceration were grossly improved in fat-grafted mice compared with sham-grafted controls. This improvement manifested histologically in a number of ways. For example, epidermal thickness measurements demonstrated decreased thickness in fat-grafted animals at both time points (20.6 ± 1.5 μm versus 55.2 ± 5.6 μm, p = 0.004; 17.6 ± 1.1 μm versus 36.3 ± 6.1 μm, p = 0.039). Picrosirius red staining demonstrated a diminished scar index in fat-treated animals at both time points as well (0.54 ± 0.05 versus 0.74 ± 0.07, p = 0.034; and 0.55 ± 0.06 versus 0.93 ± 0.07, p = 0.001). CONCLUSION: Fat grafting attenuates inflammation in acute radiodermatitis and slows the progression of fibrosis in chronic radiodermatitis.
Authors: Mimi R Borrelli; Abra H Shen; Gordon K Lee; Arash Momeni; Michael T Longaker; Derrick C Wan Journal: Ann Plast Surg Date: 2019-10 Impact factor: 1.539
Authors: Anna Luan; Dominik Duscher; Alexander J Whittam; Kevin J Paik; Elizabeth R Zielins; Elizabeth A Brett; David A Atashroo; Michael S Hu; Gordon K Lee; Geoffrey C Gurtner; Michael T Longaker; Derrick C Wan Journal: Stem Cells Date: 2016-01-12 Impact factor: 6.277
Authors: Lucas H Rifkin; Strahinja Stojadinovic; Collin H Stewart; Kwang H Song; Michael C Maxted; Marcus H Bell; Natalie S Kashefi; Michael P Speiser; Michel Saint-Cyr; Michael D Story; Rod J Rohrich; Spencer A Brown; Timothy D Solberg Journal: Radiat Oncol Date: 2012-05-08 Impact factor: 3.481