Inhaled Hydrogen Gas and Lung Transplant Damage in Rats
Inhaled Hydrogen Gas Therapy for Prevention of Lung Transplant-Induced Ischemia/Reperfusion Injury in Rats
Research hubs: Respiratory System · Cardiovascular System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (rat)
- Authors
- Tomohiro Kawamura, Chien-Sheng Huang, Naobumi Tochigi, Sungsoo Lee, Norihisa Shigemura, Timothy R. Billiar, Meinoshin Okumura, Atsunori Nakao, Yoshiya Toyoda
- Journal
- Transplantation
- Year
- 2010
- PMID
- 21048533
- Study Type
- Rat
- Delivery
- Gas
- Dose
- 2% H2 inhalation during surgery and 1 hr after reperfusion
- H₂ concentration
- 2% H2
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 152 (OpenAlex, as of November 2026)
- Country
- United States
TL;DR
Inhaling hydrogen gas during and after lung transplant surgery in rats significantly reduced lung damage and improved lung function.
Key Finding
Inhaled hydrogen gas (2% H2) significantly improved lung graft function and reduced injury markers in transplanted rat lungs, including better oxygen exchange and decreased oxidative stress and inflammation.
Summary
This study tested whether inhaled hydrogen gas could protect lung grafts from damage during transplantation in rats. When lungs are transplanted, they experience a period without blood flow (ischemia) followed by blood flow restoration (reperfusion), which causes injury through oxidative stress and inflammation. Rats that breathed 2% hydrogen gas during and after transplant surgery showed significantly better lung function, less oxidative damage, and reduced inflammation compared to rats breathing other gas mixtures.
Practical Takeaway
This is an early-stage animal study suggesting hydrogen gas may have protective effects during lung transplantation, but results cannot yet be applied to humans. Further research, including human clinical trials, would be needed to determine whether this approach could benefit lung transplant patients.
Abstract (excerpt)
Successful abrogation of ischemia/reperfusion (I/R) injury of lung grafts could significantly improve short- and long-term outcomes for lung transplant (LTx) recipients. Hydrogen gas has potent antioxidant and antiapoptotic properties and has been recently used in number of experimental…