Hydrogen-Releasing Bone Membrane Speeds Healing in Rats
- Authors
- Yuqing Mu, Zhibin Du, Wendong Gao, Ze He, Lan Xiao, Yinghong Zhou, Imaan Ahmed, Huan Dai, Ming Liu, Jiaying Liu, Xin Wang, Sheng Yu, Yin Xiao
- Journal
- Biomaterials
- Year
- 2025
- DOI
- 10.1016/j.biomaterials.2025.123928
- Study Type
- Rat
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- Australia
- Health Condition
- Bone Defects
- Body System
- Skeletal
TL;DR
A magnesium-reinforced collagen implant released hydrogen directly at injury sites, reducing inflammation and promoting bone regeneration by improving cellular redox balance.
Key Finding
A hydrogen-releasing, magnesium-reinforced collagen membrane reduced inflammatory responses and promoted bone formation in rat models by suppressing oxidative stress and inflammation pathways.
Summary
Researchers created a special collagen membrane (a type of biological material) reinforced with magnesium wires that slowly releases hydrogen gas directly into bone tissue. In rat studies, this membrane reduced inflammation and oxidative stress (cellular damage from unstable molecules) while promoting bone growth, suggesting it could improve bone regeneration procedures.
Practical Takeaway
This is early-stage research in rats testing a specialized medical device for bone regeneration—not a hydrogen water product. While the results are promising for potential future bone repair applications, this work is far from human use and tells us little about hydrogen water's effects on bone health in people.
Abstract
Localized delivery of molecular hydrogen (H2) in bone tissue engineering remains largely unexplored, despite its potent antioxidative and anti-inflammatory properties. In this study, we present a multifunctional collagen membrane reinforced with micro-magnesium wires coated with metal-phenolic networks (Col-MMW), designed for guided bone regeneration (GBR). The embedded magnesium wires provide mechanical reinforcement, enhancing the membrane's structural integrity and space-maintaining capability during early healing. Concurrently, magnesium degradation enables sustained, site-specific release of H2 and magnesium ions (Mg2+), offering a synergistic strategy to modulate the osteoimmune environment. Col-MMW attenuates intracellular reactive oxygen species (ROS) and reprograms cellular metabolism from glycolysis toward oxidative phosphorylation, thereby activating the nuclear factor erythroid 2-related factor 2 (NRF-2)-mediated redox balance pathway and suppressing nuclear factor kappa B (NF-κB) pathway-driven inflammation. This osteoimmunometabolic reprogramming leads to a significant reduction in inflammatory responses. In vivo studies, including rat subcutaneous implantation and calvarial defect models, demonstrated that the immunoregulatory effects of Col-MMW significantly promoted osteogenesis. By integrating mechanical reinforcement with localized metabolic and immune modulation, Col-MMW redefines the design paradigm of GBR membranes. These findings highlight Col-MMW as a next-generation biomaterial that combines structural integrity with targeted osteoimmunomodulation, addressing the unmet need for intelligent biomaterials for bone repair.