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The Use of Amnion-Derived Cellular Cytokine Solution to Improve Healing in Acute and Chronic Wound Models

By Michael G Franz, Wyatt G Payne, Liyu Xing, D. K Naidu, R. E Salas, Vivienne S Marshall, C. J Trumpower, Charlotte A Smith, David L Steed and M. C Robson

Abstract

Objective: Growth factors demonstrate mixed results improving wound healing. Amnion-derived multipotent cells release physiologic levels of growth factors and tissue inhibitors of metalloproteinases. This solution was tested in models of acute and chronic wound healing. Methods: Acute model: Sprague-Dawley rats underwent laparotomy incisions. The midline fascia was primed with phosphate-buffered saline, unconditioned media, or amnion-derived cellular cytokine suspension prior to incision. Breaking strength of laparotomy wounds was tested with an Instron tensiometer. Incisional hernia formation was measured after 28 days. Chronic model: Chronic, infected granulating wounds were produced in rats by excising full thickness burn eschars inoculated with Escherica coli. Granulating wounds were treated with unconditioned media or amnion-derived cellular cytokine suspension. Treatments were applied either on day 0 and day 7 or day 0 and then every other day. Wounds were traced every 72 hours and biopsied for quantitative bacteriology. Results: Acute model: Priming with amnion-derived cellular cytokine suspension increased the breaking strength of laparotomy incisions in comparison with phosphate-buffered saline or unconditioned media (P < .05). Acute wound failure and incisional hernia formation was 100% in the phosphate-buffered saline and unconditioned media groups and 18% in the amnion-derived cellular cytokine suspension–treated group (P <.05). Chronic model: The rate of wound closure was accelerated in amnion-derived cellular cytokine suspension–treated chronic wounds (P < .05). Multidosing improved the effect. Conclusions: A physiologic solution of cytokines and tissue inhibitors of metalloproteinases improves healing in models of acute and chronic wounds. Such a cocktail can be produced from amnion-derived multipotent progenitor cells

Topics: Article
Publisher: Open Science Company, LLC
OAI identifier: oai:pubmedcentral.nih.gov:2323202
Provided by: PubMed Central
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