Hydrogen-Releasing Gel Heals Infected Bone Defects in Rats
- Authors
- Chunru Kong, Chao Si, Haofeng Liu, Yawen Wang, Jiakai Qiao, Xiaoduo Tang, Hongchen Sun, Junhu Zhang, Bei Chang
- Journal
- Materials Today Bio
- Year
- 2025
- DOI
- 10.1016/j.mtbio.2025.102295
- Study Type
- Rat
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Infected Bone Defects
- Body System
- Musculoskeletal
TL;DR
A hydrogen- and magnesium-releasing injectable hydrogel scaffold reduced oxidative stress and promoted vascularized bone regeneration in infected bone defects in rats.
Key Finding
A hydrogen-releasing hydrogel scaffold achieved a 6.27-fold improvement in bone volume compared to controls in a rat model of infected bone defects.
Summary
Researchers developed a special gel-like scaffold containing magnesium that releases hydrogen gas to help repair infected bone defects (areas where bone is damaged and infected). The scaffold works by reducing harmful molecules called reactive oxygen species that cause inflammation and damage to cells' energy-producing structures (mitochondria). In rats with infected bone defects, this hydrogen-releasing scaffold produced about 6 times more new bone growth compared to untreated controls after 4 weeks.
Practical Takeaway
This is early-stage research conducted only in rats, so it cannot yet be applied to human treatment. The study suggests that sustained hydrogen release may help address oxidative stress and mitochondrial dysfunction in infected bone healing, but human trials would be needed to determine if this approach is safe and effective for patients.
Abstract (excerpt)
The repair of infected bone defects (IBDs) presents a significant clinical challenge due to recurrent infections and inflammation. Characterized by reactive oxygen species (ROS) bursts and mitochondrial dysfunction, IBDs generates to a vicious oxidation-inflammation cycle that impairs bone…