Hydrogen Gas Protects Heart Cells from Damage in Lab Study
Preconditioning with hydrogen gas produces cardioprotective effects through autophagy activation in rat cardiomyocytes
Research hubs: Cardiovascular System
This research was done on cells or tissue in a lab, not in people or animals.
- Evidence type
- Laboratory study (cells or tissue)
- Authors
- Tokuhiro Yamada, Aya Kimura, Takashi Juri, Koichi Suehiro, Takashi Mori
- Journal
- BMC Pharmacology and Toxicology
- Year
- 2025
- PMID
- 41299779
- Study Type
- Rat
- Delivery
- Gas
- Dose
- 3% H2 gas inhalation for 60 min
- H₂ concentration
- 3% H2 gas
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 0 (OpenAlex, as of November 2026)
- Country
- Japan
TL;DR
Inhaled hydrogen gas protects the heart by activating ERK signaling and autophagy, reducing calcium overload and mitochondrial damage.
Key Finding
Hydrogen gas preconditioning protected rat heart cells from calcium overload and mitochondrial damage by activating autophagy and a cellular signaling pathway called ERK/MAPK.
Summary
Researchers exposed rat heart cells to hydrogen gas for one hour, then tested whether this treatment protected the cells from damage. They found that hydrogen gas prevented calcium (a mineral) from building up inside cells and kept the energy-producing structures (mitochondria) working properly. These protective effects only worked when a specific cellular cleanup process called autophagy was active, suggesting that hydrogen gas works by triggering this natural cellular repair mechanism.
Practical Takeaway
This is an early-stage laboratory study in rat cells only, not humans. While the results suggest hydrogen gas inhalation may have potential to protect heart tissue during surgery, much more research is needed before any conclusions can be drawn about its usefulness in patients. The study does not tell us whether hydrogen water (which is different from inhaled hydrogen gas) would have similar effects.
Abstract (excerpt)
Abstract Background It is controversial whether hydrogen (H 2 ) gas can activate cellular survival cascades and autophagy in the myocardium. This translational study aimed to investigate the hypothesis that preconditioning with inhaled H 2 gas had a cardio-protective effect mediated through…