Breathing Hydrogen Gas Reduced Ventilator-Induced Lung Injury in Mice
Hydrogen inhalation ameliorates ventilator-induced lung injury
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
- Chien-Sheng Huang, Tomohiro Kawamura, Sungsoo Lee, Naobumi Tochigi, Norihisa Shigemura, Bettina M. Buchholz, John D. Kloke, Timothy R. Billiar, Yoshiya Toyoda, Atsunori Nakao
- Journal
- Critical Care
- Year
- 2010
- PMID
- 21184683
- Study Type
- Mouse
- Participants
- 28
- Delivery
- Gas
- Dose
- 2% hydrogen in air for 2 hours (high-tidal volume protocol) and 5 hours (low-tidal volume protocol)
- H₂ concentration
- 2% H2 gas
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 102 (OpenAlex, as of November 2026)
- Country
- United States
TL;DR
Inhaling hydrogen gas can significantly reduce lung damage caused by mechanical ventilators used in intensive care.
Key Finding
In mechanically ventilated mice, inhaled hydrogen gas significantly reduced lung swelling, inflammatory cell infiltration, and cell death compared to control treatment.
Summary
Mechanical ventilation (a machine that helps patients breathe in hospitals) can damage the lungs by triggering inflammation and oxidative stress (cellular damage from unstable molecules). Researchers tested whether inhaled hydrogen gas could protect mouse lungs from this damage. Mice on mechanical ventilators that breathed 2% hydrogen showed significantly less lung swelling, fewer inflammatory cells, and less cell death compared to mice breathing regular air, suggesting hydrogen's antioxidant properties helped reduce injury.
Practical Takeaway
This is an early-stage animal study showing hydrogen inhalation may help protect lungs during mechanical ventilation, but results in mice do not directly translate to humans. Much more research, including human clinical trials, would be needed before hydrogen could be considered a therapeutic option for ventilator patients in intensive care settings.
Abstract (excerpt)
Abstract Introduction Mechanical ventilation (MV) can provoke oxidative stress and an inflammatory response, and subsequently cause ventilator-induced lung injury (VILI), a major cause of mortality and morbidity of patients in the intensive care unit. Inhaled hydrogen can act as an antioxidant…