【欧洲整形美容数技术】.doc

WOUND HEALING Adipose Stromal Cells and Platelet-Rich Plasma Therapies Synergistically Increase Revascularization during Wound Healing Matthew W. Blanton, M.D. Ivan Hadad, M.D. Brian H. Johnstone, Ph.D. Julia A. Mund, B.A. Pamela I. Rogers Barry L. Eppley, M.D., D.M.D. Keith L. March, M.D., Ph.D. Indianapolis, Ind. Background: The authors examined the efficacy of adipose stem cells, when supplied either alone or in platelet-rich fibrin gels, to improve wound healing. Methods: A porcine full-thickness woundmodel was used to compare six topical treatments: platelet-poor plasma; platelet-rich plasma; autologous adipose stem cells plus platelet-poor plasma; autologous adipose stem cells plus platelet-rich plasma; allogeneic adipose stem cells containing green fluorescent protein plus platelet-poor plasma; and saline (control). One week after isolation, adipose stem cells were applied to full-thickness wounds on the paraspinal and thoracic regions of three pigs (44 wounds per pig; each treatment was applied to eight separate wounds). Each wound wasmonitored over 21 days for closure, cosmesis, and histopathology. Results: There was no significant difference in the reepithelialization rate, but treatments containing adipose stem cells demonstrated increased microvessel densities (31.75
5.73 vessels/cm2 versus 7.93
3.61 vessels/cm2 ) compared with groups without adipose stem cells. Wound cosmesis was improved in the adipose stem cell plus platelet-rich plasma group compared with other treat- ment groups (p  0.05). Vascular endothelial growth factor levels detected in matrices containing adipose stem cells were approximately 7-fold higher com- pared with platelet-rich plasma or platelet-poor plasma (p  0.05). Localization of transgenic green fluorescent protein plus adipose stem cells indicated in- corporation near neovasculature. Conclusions: In normal healing wounds, adipose stem cells appear to enhance the healing process only when provided in a fibrin gel vehicle c