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Research Article Open Access
Volume 2 | Issue 3 | DOI: https://doi.org/10.33696/diabetes.1.024

Improved Wound Closure Rates and Mechanical Properties Resembling Native Skin in Murine Diabetic Wounds Treated with a Tropoelastin and Collagen Wound Healing Device

  • 1Center for Materials Interfaces in Research & Applications (¬°MIRA!), Northern Arizona University, Flagstaff, AZ, USA
  • 2Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
  • 3Protein Genomics, Sedona, AZ, USA
  • 4Axolotl Biologix, Phoenix, AZ, USA
+ Affiliations - Affiliations

Corresponding Author

Robert S. Kellar, robert.kellar@nau.edu

Received Date: October 13, 2020

Accepted Date: November 04, 2020

Abstract

Chronic wounds in patients suffering from type II diabetes mellitus (DMII) where wounds remain open with a complicated pathophysiology, healing, and recovery process is a public health concern. Normal wound healing plays a critical role in wound closure, restoration of mechanical properties, and the biochemical characteristics of the remodeled tissue. Biological scaffolds provide a tissue substitute to help facilitate wound healing by mimicking the extracellular matrix (ECM) of the dermis. In the current study an electrospun biomimetic scaffold, wound healing device (WHD), containing tropoelastin (TE) and collagen was synthesized to mimic the biochemical and mechanical characteristics of healthy human skin. The WHD was compared to a commercially available porcine small intestinal submucosa (SIS) matrix that has been used in both partial and full-thickness wounds, Oasis® Wound Matrix. Using a diabetic murine model C57BKS.Cg-m+/+Leprdb/J mice (db/db) wound closure rates, histochemistry (CD31 and CD163), qPCR (GAPDH, TNF-α, NOS2, ARG1 and IL10), and mechanical testing of treated wound sites were evaluated. The WHD in a splinted, full thickness, diabetic murine wound healing model demonstrated skin organ regeneration, an enhanced rate of wound closure, decreased tissue inflammation, and a stronger and more durable remodeled tissue that more closely mimics native unwounded skin compared to the control device.

Keywords

Diabetic wound, Elastin, Tropoelastin, Electrospinning, Wound healing device

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