The Effect of Wound Dressings on a Bio-Engineered Human Dermo-Epidermal Skin Substitute in a Rat Model

Journal of Burn Care & Research : Official Publication of the American Burn Association
Martina HügingFabienne Hartmann-Fritsch

Abstract

Autologous bio-engineered dermo-epidermal skin substitutes are a promising treatment for large skin defects such as burns. For their successful clinical application, the graft dressing must protect and support the keratinocyte layer and, in many cases, possess antimicrobial properties. However, silver in many antimicrobial dressings may inhibit keratinocyte growth and differentiation. The purpose of our study was to evaluate the effect of various wound dressings on the healing of a human hydrogel-based dermo-epidermal skin substitute in preparation for the first-in-human clinical trials. Human dermo-epidermal skin substitutes approved for clinical trials were produced under good manufacturing practice conditions, transplanted onto immuno-incompetent rats, and dressed with either Vaseline Gauze™ (Kendall Medtronic, Minneapolis, USA), Suprathel (PolyMedics Innovations GmbH, Denkendorf, Germany), Urgotul SSD (Urgo Medical, Shepshed, United Kingdom), Mepilex AG (Mölnlycke Health Care, Gothenburg, Sweden), or Acticoat™ (Smith&Nephew, Baar, Switzerland). Grafts were assessed clinically for take, epithelialization, and infection at 10 and 21 days post-transplantation, and histologically at 21 days. There were three subjects each in th...Continue Reading

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