Calcium Compound Fights Bone Infections Using Hydrogen Therapy
- Authors
- Lin Chen, Shuning Cheng, Shunyi Lu, Xiang Gao, Fei Gong, Junwu Shi, Zhihui Han, Yuanjie Wang, Xiaoyuan Yang, Xiaozhong Zhou, Liang Cheng
- Journal
- Small
- Year
- 2024
- DOI
- 10.1002/smll.202306315
- Study Type
- Cell Culture
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Osteomyelitis
- Body System
- Musculoskeletal
TL;DR
Scientists have found that calcium hydride (CaH2) can effectively kill bacteria causing bone infections and promote bone healing without relying on antibiotics.
Key Finding
Calcium hydride killed bacteria and promoted bone healing in infected mouse bones through three simultaneous mechanisms: generating an alkaline environment, delivering calcium ions, and producing hydrogen gas.
Summary
Researchers tested calcium hydride, a compound that releases hydrogen gas, alkaline chemicals, and calcium ions when exposed to water, as a potential treatment for osteomyelitis (a serious bone infection caused by bacteria). In laboratory and mouse studies, calcium hydride killed bacteria through multiple mechanisms: it created an alkaline environment toxic to bacteria, caused calcium buildup inside bacterial cells, and generated hydrogen gas that damaged bacterial membranes. When applied to infected mouse bones, the treatment reduced bacteria, decreased inflammation, and promoted new bone growth.
Practical Takeaway
This is early-stage research conducted in laboratory and animal models only, not in humans. While the results are promising for a potential future treatment of antibiotic-resistant bone infections, it is far too premature to draw any conclusions about whether hydrogen water or similar products would have similar effects in people. Much more research, including human clinical trials, would be needed before any therapeutic claims could be made.
Abstract
Osteomyelitis with high mortality and disability rates is a common clinical disease caused by a bacterial infection that is difficult to cure. Considering the stubborn nature and depth of tissue infection, rapid and effective treatments for osteomyelitis remain an enormous challenge. Calcium hydride (CaH2), as efficient hydrogen/alkaline/calcium donors, is employed for combined osteomyelitis therapy. CaH2 reacts with water to sufficiently generate a strong alkali environment with hydroxide anions (OH-) to inhibit bacterial proliferation and induce bacterial death. The released calcium ions (Ca2+) induce calcium overload to kill bacteria first and then serves as calcium source to promote new bone formation. Another byproduct, hydrogen enhances the bacterial membrane permeability and scavenges excess reactive oxygen species (ROS). After incubation with bacteria, CaH2 significantly increases the permeability of the bacterial membrane, therefore increasing the entry of OH- and Ca2+ into bacterial cells, thereby leading to significant bacterial death. After being applied to S. aureus-infected mouse tibia osteomyelitis, CaH2 materials efficiently kill bacteria, relieve local inflammation, and promote new bone formation in a short time. Overall, bioactive metal hydride-associated "triple" hydrogen/alkaline/calcium therapy provides a new idea for the treatment of deep-site bacterial infection, which is beneficial for relieving the pressure caused by antibiotic-resistant bacteria.