Abstract
Previous animal data showed that platelets contain growth factors that stimulate capillary endothelial migration (angiogenesis), fibroblast proliferation and migration, and collagen synthesis. This study utilized autologous platelet-derived wound healing factors (PDWHF) to treat 49 patients with chronic nonhealing cutaneous ulcers. Patients were classified on the basis of 20 clinical and wound status parameters to generate a wound severity index. Forty-nine patients--58% diabetic (20% with renal transplants); 16% with trauma, vasculitis, etc.; 14% with decubitus ulcers; and 6% each with venous stasis or arterial insufficiency--with a total of 95 wounds had received conventional wound care for an average of 198 weeks (range: 1-1820 weeks). After informed consent was obtained, patients received autologous PDWHF. Mean 100% healing time for all patients was 10.6 weeks. There was no abnormal tissue formation, keloid, or hypertrophic scarring. A multivariant analysis showed a direct correlation to 100% healing with initial wound size and the initiation of PDWHF therapy. This is the first clinical demonstration that locally acting growth factors promote healing of chronic cutaneous ulcers.
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