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Published on: August 9, 2012
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Electrospun hierarchical structural films for effective wound healing.
Haixia Xu1, Feiyang Zhang2, Menglong Wang1
1School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
Biomaterials Advances
|August 5, 2022
Summary
A new hierarchical nanofiber wound dressing promotes healing by resisting microbes and maintaining a moist environment. This advanced dressing accelerates wound closure within 14 days, showing potential for effective wound care.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Nanotechnology
Background:
- Increasing global incidence of acute and chronic wounds necessitates advanced treatment solutions.
- Current wound care often struggles with infection control and optimal healing environments.
- Nanofiber-based dressings offer promising avenues for enhanced wound management.
Purpose of the Study:
- To design and prepare a novel hierarchical structural film wound dressing for accelerated wound healing.
- To incorporate antibacterial and pro-healing properties into a multi-layered nanofiber system.
- To evaluate the efficacy of the developed wound dressing in promoting wound closure and tissue regeneration.
Main Methods:
- Fabrication of a three-layered wound dressing using polycaprolactone (PCL) and gelatin.
- Incorporation of ciprofloxacin (CIP) and zinc oxide nanoparticles (n-ZnO) into specific layers.
- Utilizing side-by-side electrospinning for Janus nanofiber creation in the middle layer.
- In vitro assessment of surface wettability, mechanical properties, drug release kinetics, and antibacterial activity against Staphylococcus aureus and Escherichia coli.
- In vivo evaluation of wound healing in mice, assessing collagen deposition and angiogenesis.
Main Results:
- The hierarchical dressing exhibited excellent surface wettability, mechanical strength, and controlled drug release.
- Demonstrated significant antibacterial efficacy against both Gram-positive (S. aureus) and Gram-negative (E. coli) bacteria.
- In vivo studies showed accelerated collagen deposition and enhanced angiogenesis in treated wounds.
- Complete wound healing was achieved within 14 days in the animal model.
- The dressing's structure effectively resisted microbial adhesion while maintaining a conducive healing microenvironment.
Conclusions:
- The developed hierarchical structural film wound dressing shows significant potential for accelerating wound healing.
- The combination of hydrophobic and hydrophilic layers, along with bioactive agents, provides a multi-functional therapeutic approach.
- This advanced wound dressing offers a promising solution for managing complex wounds and reducing infection risk.
