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Related Concept Videos

Adaptations that Reduce Water Loss01:57

Adaptations that Reduce Water Loss

Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
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Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...

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Related Experiment Video

Updated: Jul 16, 2026

Bioprinting Cellularized Constructs Using a Tissue-specific Hydrogel Bioink
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Development and optimization of a multifunctional cellulose-based hydrogel for enhanced crosslinking and tunability.

Behina Sadat Tabatabaei Hosseini1, Nima Tabatabaei Rezaei2, Fereshteh Oustadi1

  • 1Department of Biomedical Engineering, University of Calgary, Calgary, Alberta, T2N 1N4, Canada.

Biomaterials Advances
|September 25, 2025
PubMed
Summary

A new photocrosslinkable hydrogel dressing improves donor site wound care. This advanced material offers better moisture control and potential pain relief, addressing limitations of current treatments for faster healing.

Keywords:
CelluloseChitosanPhotocrosslinkingSkin graftingWound dressing

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Area of Science:

  • Biomaterials Science
  • Wound Healing Research
  • Regenerative Medicine

Background:

  • Donor site wounds from skin grafting present significant healing challenges, including pain and infection.
  • Existing treatments like Xeroform gauze dressings offer suboptimal moisture and pain management.
  • There is a critical need for advanced wound dressings to improve donor site healing outcomes.

Purpose of the Study:

  • To develop and characterize a novel photocrosslinkable hydrogel dressing for enhanced donor site wound care.
  • To optimize the hydrogel's properties for improved wound healing applications.
  • To evaluate the hydrogel's biocompatibility, antimicrobial, and antifouling efficacy.

Main Methods:

  • Fabrication of an interpenetrating polymer network hydrogel using methacrylated cellulose and chitosan derivatives.
  • Optimization of hydrogel properties (mechanical, swelling, rheological) by varying cellulose concentration and methacrylation degree (~30%).
  • Assessment of hemocompatibility, cytotoxicity (3T3 fibroblast cells), antimicrobial activity, and antifouling properties against E. coli.

Main Results:

  • The optimized hydrogel exhibited favorable mechanical properties, swelling ratio, and rheological characteristics.
  • The hydrogel demonstrated excellent hemocompatibility and no cytotoxicity to fibroblast cells.
  • The hydrogel showed superior antimicrobial and antifouling properties compared to Jelonet, inhibiting E. coli biofilm formation without antimicrobial agents.

Conclusions:

  • The novel photocrosslinkable hydrogel dressing presents a promising advancement in donor site wound management.
  • Its optimized properties offer enhanced moisture control and potential for pain reduction.
  • This biomaterial provides an effective solution for improving healing in challenging donor site wounds.