Hydrogen Gas and Endotoxin-Induced Lung Injury in Mice
Hydrogen Attenuates Endotoxin-Induced Lung Injury by Activating Thioredoxin 1 and Decreasing Tissue Factor Expression
Research hubs: Respiratory System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (mouse)
- Authors
- Qian Li, Liang Hu, Juan Li, Pan Yu, Fan Hu, Bing Wan, Miaomiao Xu, Huixian Cheng, Wanyou Yu, Liping Jiang, Yadan Shi, Jincan Li, Manlin Duan, Yun Long, Wen-Tao Liu
- Journal
- Frontiers in Immunology
- Year
- 2021
- PMID
- 33767697
- Study Type
- Mouse
- Delivery
- Gas
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 14 (OpenAlex, as of November 2026)
- Country
- China
TL;DR
Breathing in hydrogen gas can significantly reduce lung damage caused by toxins from bacteria, potentially offering a new treatment approach.
Key Finding
In mice with endotoxin-induced lung injury, hydrogen gas inhalation improved survival rates and reduced lung damage by activating a protein called thioredoxin 1.
Summary
Researchers exposed mice to endotoxin (a bacterial toxin that triggers severe inflammation) to mimic lung injury, then treated some mice by having them inhale hydrogen gas. Hydrogen-treated mice survived longer, had less fluid and bleeding in their lungs, and showed lower levels of inflammatory markers. The study found that hydrogen works by activating a protective protein called thioredoxin 1, which reduces harmful substances that damage lung tissue.
Practical Takeaway
This is an early-stage animal study showing hydrogen may help protect lungs from severe bacterial toxin-related injury, but human testing has not yet been done. The findings suggest a potential mechanism for how hydrogen might work, but much more research—including human trials—would be needed before hydrogen could be considered a clinical treatment for this condition.
Abstract (excerpt)
Endotoxin-induced lung injury is one of the major causes of death induced by endotoxemia, however, few effective therapeutic options exist. Hydrogen inhalation has recently been shown to be an effective treatment for inflammatory lung injury, but the underlying mechanism is unknown. In the current…