Hydrogen Gas Protects Lung Transplants from Damage in Rats
The effect of donor treatment with hydrogen on lung allograft function in rats
Research hubs: Respiratory 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, Ximei Peng, Kosuke Masutani, Norihisa Shigemura, Timothy R. Billiar, Meinoshin Okumura, Yoshiya Toyoda, Atsunori Nakao
- Journal
- Surgery
- Year
- 2011
- PMID
- 21801961
- Study Type
- Rat
- Delivery
- Gas
- Dose
- 2% hydrogen inhalation for 3 hours prior to organ harvest
- H₂ concentration
- 2% H2 gas
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 69 (OpenAlex, as of November 2026)
- Country
- United States
TL;DR
Breathing in hydrogen gas can protect lung transplants from damage in rats.
Key Finding
Inhaled hydrogen gas given to organ donors before lung transplantation significantly protected the donated lungs from damage caused by the transplant process, with improvements in gas exchange and reduced inflammatory markers.
Summary
Researchers tested whether giving donors inhaled hydrogen gas before lung transplantation could protect the donated lungs from damage. In a rat transplant model, donor lungs were exposed to either regular air or air with 2% hydrogen for 3 hours before removal and transplantation. Lungs from donors who received hydrogen showed better function after transplant and had less inflammation and cell death compared to lungs from donors who received regular air.
Practical Takeaway
This is an early-stage animal study suggesting hydrogen gas may have protective effects for organ transplantation, but it was conducted only in rats and tested a specific medical application (donor pretreatment before surgery). Much more research, including human studies, would be needed before this approach could be considered for clinical use.
Abstract (excerpt)
Because inhaled hydrogen provides potent anti-inflammatory and antiapoptotic effects against acute lung injury, we hypothesized that treatment of organ donors with inhaled hydrogen during mechanical ventilation would decrease graft injury after lung transplantation. Orthotopic left lung transplants…