A photocuring double-network hydrogel enhances mechanotransduction and scavenges ROS to accelerate pressure injury healing.

Summary

A glucose-responsive, photocured double-network hydrogel (PAHN/SilMA + cyanidin chloride) increased stiffness 45-fold under high-glucose conditions, scavenged ROS, and accelerated closure and neovascularization in a hyperglycemic pressure-injury model. Benefits were linked to activation of the TRPV4–CaMKII mechanotransduction pathway and oxidative stress mitigation.

Key Findings

• Glucose-responsive secondary polymerization produced a 45-fold rise in storage modulus under high-glucose conditions.
• Cyanidin chloride imparted potent ROS-scavenging capacity.
• In a hyperglycemic pressure-injury model, the hydrogel accelerated wound closure and enhanced neovascularization.
• Mechanistic benefit was linked to activation of the TRPV4–CaMKII pathway and oxidative stress reduction.

Clinical Implications

If translated, such hydrogels could improve healing rates and tissue quality in diabetic pressure injuries where conventional dressings fail.

Limitations

• Preclinical animal data; human safety and efficacy are untested.
• Long-term durability, infection control, and regulatory path remain to be established.

Future Directions

Conduct large-animal and early-phase clinical trials to assess safety, dosing, integration with standard care, and long-term outcomes in diabetic pressure injuries.