Hydrogen Gas in Hamsters with Sleep Apnea
Hydrogen gas attenuates embryonic gene expression and prevents left ventricular remodeling induced by intermittent hypoxia in cardiomyopathic hamsters
Research hubs: Cardiovascular System · Respiratory System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (hamster)
- Authors
- Ryuji Kato, Atsuo Nomura, Aiji Sakamoto, Yuki Yasuda, Koyuha Amatani, Sayuri Nagai, Yoko Sen, Yoshio Ijiri, Yoshikatsu Okada, Takehiro Yamaguchi, Yasukatsu Izumi, Minoru Yoshiyama, Kazuhiko Tanaka, Tetsuya Hayashi
- Journal
- American Journal of Physiology-Heart and Circulatory Physiology
- Year
- 2014
- PMID
- 25281567
- Study Type
- Hamster
- Participants
- 55
- Delivery
- Gas
- Dose
- 3.05% hydrogen gas inhalation during 8 hours of intermittent hypoxia exposure for 14 days
- H₂ concentration
- 3.05 vol/100 vol
- Duration
- 2 weeks
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 25 (OpenAlex, as of November 2026)
- Country
- Japan
TL;DR
Breathing low oxygen levels worsened heart failure in sick hamsters, but inhaling hydrogen gas reduced damage and helped preserve heart function.
Key Finding
Hydrogen gas inhalation reduced oxidative stress and prevented heart deterioration in cardiomyopathic hamsters exposed to repeated low-oxygen episodes, preserving heart function that would otherwise have declined.
Summary
This study examined how repeated episodes of low oxygen (similar to what happens during sleep apnea) affects the hearts of hamsters with heart disease, and whether inhaling hydrogen gas could help. Researchers found that low-oxygen cycles damaged the hearts of diseased hamsters by increasing harmful molecules called free radicals and triggering stress responses in heart cells. When hydrogen gas was given to these hamsters, it reduced free radical damage and prevented the heart from getting worse.
Practical Takeaway
This animal study suggests hydrogen gas may help protect failing hearts from damage caused by intermittent low oxygen, which occurs in sleep apnea patients. However, this research was conducted only in hamsters with heart disease, so it's too early to know if these results would apply to humans. Much more research, including human studies, would be needed before hydrogen therapy could be considered for heart failure patients.
Abstract (excerpt)
The prevalence of sleep apnea is very high in patients with heart failure (HF). The aims of this study were to investigate the influence of intermittent hypoxia (IH) on the failing heart and to evaluate the antioxidant effect of hydrogen gas. Normal male Syrian hamsters ( n = 22)…