Original title: Harnessing gasotransmitters for orthopaedic infection therapy: Mechanisms and advanced delivery platforms
Jun-Yi Zhang, Yi-Qi Yang, Zhi-Xiong Zhang, Jia-Le Jin +9 · September 2026
Bone infections are rising among older people, and standard antibiotics often fail because bacteria become resistant to drugs. Researchers are reviewing a different approach: using special medical gases called gasotransmitters to fight these infections. These gases include nitric oxide, carbon monoxide, and hydrogen sulfide. At carefully controlled amounts, they work in two main ways: they kill bacteria and regulate the immune system, helping to stop infections while also encouraging damaged bone tissue to heal and rebuild. However, incorrect amounts can cause harmful side effects. To make this treatment safer, scientists are developing smart delivery tools like specialized scaffolds, tiny nano-reservoirs, and systems that release gas on demand directly into infected bone, offering a promising alternative for treating bone infections.
Imagine watering a plant that needs exactly the right amount of water — too little and it dries out, too much and it rots. You cannot just pour water once; you have to adjust based on the plant's condition. In this paper, the gases that treat bone infections need the same careful balance. Special materials act like a smart watering system, releasing gas only where and when the infection exists, so healthy bone stays safe.
As antibiotic resistance grows, these gases offer a new way to treat bone infections. Specially designed scaffolds can deliver them exactly where needed, reducing side effects. This could mean fewer amputations and shorter hospital stays for older patients.
The paper acknowledges that the same gases that kill bacteria can damage healthy tissue if not dosed correctly. Additionally, these delivery platforms are still mostly in the research stage, so large-scale clinical use is not yet established. The review itself is a summary of existing work, not new experimental results.
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Harnessing gasotransmitters for orthopaedic infection therapy: Mechanisms and advanced delivery platforms — Jun-Yi Zhang, Yi-Qi Yang, Zhi-Xiong Zhang et al. — Bioactive materials — doi:10.1016/j.bioactmat.2026.05.047
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.