Hydrogen and Brain Inflammation in Newborn Mice with Oxygen Loss
Hydrogen Attenuated Inflammation Response and Oxidative in Hypoxic Ischemic Encephalopathy via Nrf2 Mediated the Inhibition of NLRP3 and NF-κB
Research hubs: Brain & Nervous System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (mouse)
- Authors
- Yajiao Hu, Pingzhu Wang, Kun Han
- Journal
- Neuroscience
- Year
- 2021
- PMID
- 34953939
- Study Type
- Mouse
- Delivery
- Gas
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 32 (OpenAlex, as of November 2026)
- Country
- China
TL;DR
Hydrogen treatment can reduce brain damage and improve recovery after a lack of oxygen and blood flow in newborn mice, but this benefit depends on a specific protective protein called Nrf2.
Key Finding
Hydrogen gas reduced brain injury and inflammation in mice with oxygen deprivation, but only when the Nrf2 protective pathway was present and functional.
Summary
This mouse study investigated how hydrogen gas protects the brain from damage caused by lack of oxygen and blood flow (a condition called hypoxic-ischemic encephalopathy). Researchers found that hydrogen reduced brain injury, cell death, and inflammation by activating a protective pathway called Nrf2, which also reduced harmful molecules called free radicals and suppressed inflammatory signals. Importantly, when mice lacked the Nrf2 protein, hydrogen no longer provided protection, showing that this specific pathway is essential for hydrogen's protective effects.
Practical Takeaway
This is an early-stage mouse study that identifies a potential mechanism for how hydrogen might protect brain tissue from injury. However, it does not demonstrate that hydrogen would have the same effects in humans, and no human trials have been conducted. Much more research would be needed before any clinical applications could be considered.
Abstract (excerpt)
Hypoxia and ischemia cause neonatal encephalopathy and brain injury and can further result in cerebral palsy, cognitive impairment, growth restriction, and epilepsy. Induction of neuroprotection is a crucial therapeutic strategy for the treatment of perinatal hypoxic-ischaemic encephalopathy (HIE)…