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Published on: September 7, 2022
Dual-Template Engineered Low-Tortuosity Hydrogels with Gradient Microchannels for On-Demand Management of Refractory
Siyu Li1, Jinying He1, Lunhao Zhi1
1College of Polymer Science and Engineering, State Key Laboratory of Advanced Polymer Materials, Sichuan University, Chengdu610065, China.
Biomacromolecules
|July 21, 2026
Summary
This study introduces a smart hydrogel dressing that rapidly absorbs wound fluid and releases antibacterial agents on demand. This innovative wound dressing accelerates healing by managing infection and promoting tissue regeneration.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Wound Healing
Background:
- Chronic refractory wounds pose challenges due to exudate and infection.
- Existing dressings struggle to manage these complex wound environments effectively.
Purpose of the Study:
- To develop a smart hydrogel dressing with enhanced exudate absorption and on-demand antibacterial release.
- To investigate the dressing's performance in an infectious wound model.
Main Methods:
- A dual-template strategy was used to create a hydrogel with gradient microchannels.
- The hydrogel incorporates a thermal feedback loop for controlled release of antibacterial agents.
- An infectious burn model was used to evaluate the dressing's efficacy.
Main Results:
- The optimized hydrogel structure accelerated viscous liquid absorption by approximately 17 times.
- The dressing effectively released antibacterial agents in response to infection-induced temperature increases.
- The smart hydrogel dressing outperformed a commercial dressing in reducing inflammation, enhancing collagen regeneration, and promoting angiogenesis.
Conclusions:
- The developed smart hydrogel dressing offers a novel solution for managing chronic refractory wounds.
- The design strategy provides a universal approach for next-generation functional wound dressings.
