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Related Concept Videos

Phases of Wound Repair01:28

Phases of Wound Repair

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Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
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Engineering a Bilayered Hydrogel to Control ASC Differentiation
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A double-network polysaccharide-based composite hydrogel for skin wound healing.

Yuxin He1, Yang Li1, Yadong Sun1

  • 1College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China.

Carbohydrate Polymers
|March 26, 2021
PubMed
Summary

This study introduces a novel double-network hydrogel wound dressing made from functionalized chitosan and alginate. The advanced hydrogel significantly accelerates skin healing by reducing inflammation and improving tissue regeneration.

Keywords:
Carboxymethyl chitosanCollagen peptideDouble-network hydrogelOxidized methacrylate sodium alginateWound dressing

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Wound Healing Research

Background:

  • Effective wound dressings are crucial for infection prevention and healing.
  • Existing hydrogel dressings often lack optimal mechanical strength, biological activity, or versatility.

Purpose of the Study:

  • To develop a novel double-network hydrogel wound dressing with enhanced properties.
  • To evaluate the efficacy of this hydrogel in promoting skin wound healing.

Main Methods:

  • Synthesized a double-network hydrogel using collagen peptide-functionalized carboxymethyl chitosan (CS) and oxidized methacrylate sodium alginate (SA).
  • Characterized the hydrogel's morphology, swelling, mechanical properties, and biocompatibility.
  • Assessed in vivo wound healing in a mouse full-thickness skin defect model.

Main Results:

  • The developed CS/SA hydrogel exhibited interconnected porous structures, appropriate swelling, and superior mechanical performance.
  • In vivo studies demonstrated significantly accelerated wound healing.
  • The hydrogel effectively regulated inflammation, enhanced collagen deposition, and promoted vascularization.

Conclusions:

  • The functionalized double-network CS/SA hydrogel presents a promising candidate for advanced wound dressing applications.
  • This hydrogel offers a combination of mechanical robustness and biological activity for improved wound healing outcomes.