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3D-Printed Gelatin-Alginate Hydrogel Dressings for Burn Wound Healing: A Comprehensive Study
International Journal of Bioprinting
  • Fateme Fayyazbakhsh, Missouri University of Science and Technology
  • Michael J. Khayat
  • Ming-Chuan Leu, Missouri University of Science and Technology
Abstract

Burn Wound Treatment is Still a Clinical Challenge Due to the Severity of Tissue Damage and Dehydration. among Various Wound Dressings, Hydrogel Materials Have Gained Significant Attention for Burn Wound Treatment in Clinical Practice Due to their Soothing and Moisturizing Activity. in This Study, 3D-Printed Dressings Were Fabricated using Clinically Relevant Hydrogels for Deep Partial-Thickness Burn (PTB) Wounds. Different Ratios of Gelatin and Alginate Mixture Were 3D-Printed and Examined in Terms of Rheological Behavior, Shear Thinning Behavior, Mechanical Properties, Degradation Rate, and Hydration Activity to Tune the Hydrogel Composition for Best Functionality. the Cell-Laden Dressings Were Bioprinted to Evaluate the Effect of the Gelatin: Alginate Ratio on the Proliferation and Growth of Human Dermal Fibroblasts. the Present Findings Confirm that the Higher Alginate Content is Associated with Higher Viscosity and Young's Modulus, While Higher Gelatin Content is Associated with Faster Degradation and Higher Cell Viability. Together, the 3D-Printed Dressing with 75% Gelatin and 25% Alginate Showed the Best Tradeoff between Mechanical Properties, Hydration Activity, and in Vitro Biological Response. Findings from in Vivo Test using the Most Effective Dressing Showed the Positive Effect of 3D-Printed Porous Pattern on Wound Healing, Including Faster Wound Closure, Regenerated Hair Follicles, and Non-Traumatic Dressing Removal Compared to the Non-Printed Hydrogel with the Same Composition and the Standard of Care. Results from This Research Showed that 3D-Printed Dressings with an Adequate Gelatin: Alginate Ratio Enhanced Wound Healing Activity for Up to 7 Days of Moisture Retention on Deep PTB Wounds.

Department(s)
Mechanical and Aerospace Engineering
Publication Status
Open
Comments

National Institutes of Health, Grant None

Keywords and Phrases
  • 3d printing,
  • Advanced dressings,
  • Alginate,
  • Burn wound,
  • Gelatin,
  • Moist wound healing
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 The Authors, All rights reserved.
Creative Commons Licensing
Creative Commons Attribution 4.0
Publication Date
1-1-2022
Publication Date
01 Jan 2022
Citation Information
Fateme Fayyazbakhsh, Michael J. Khayat and Ming-Chuan Leu. "3D-Printed Gelatin-Alginate Hydrogel Dressings for Burn Wound Healing: A Comprehensive Study" International Journal of Bioprinting Vol. 8 Iss. 4 (2022) p. 274 - 291 ISSN: 2424-8002
Available at: http://works.bepress.com/ming-leu/437/