Hydrogen Gas and Brain Protection from Sepsis in Lab Tests
Hydrogen Alleviates Neuronal Injury and Neuroinflammation Induced by Microglial Activation via the Nuclear Factor Erythroid 2-related Factor 2 Pathway in Sepsis-associated Encephalopathy
Research hubs: Brain & Nervous System · Immune System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (cell culture)
- Authors
- Hongguang Chen, Beibei Dong, Yuan Shi, Yonghao Yu, Ke-Liang Xie
- Journal
- Neuroscience
- Year
- 2021
- PMID
- 33992722
- Study Type
- Cell Culture
- Delivery
- Medium (Dissolved)
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 28 (OpenAlex, as of November 2026)
- Country
- China
TL;DR
Hydrogen gas (H2) helps protect the brain from inflammation and damage during sepsis by activating a protective pathway known as Nrf2.
Key Finding
Hydrogen gas reduced brain inflammation and protected nerve cells from damage in sepsis-associated encephalopathy by activating the Nrf2 signaling pathway, but these protective effects disappeared in mice genetically lacking the Nrf2 pathway.
Summary
This study investigated how hydrogen gas might protect the brain during sepsis (a severe infection that affects the whole body), specifically looking at a condition called sepsis-associated encephalopathy where the brain becomes inflamed and damaged. Researchers used mouse models and laboratory-grown brain cells to test whether hydrogen could reduce brain inflammation and nerve cell damage. They found that hydrogen appeared to work by activating a protective pathway called Nrf2, which reduced harmful inflammation and prevented brain cells from dying.
Practical Takeaway
While this early laboratory research suggests hydrogen may have neuroprotective effects in sepsis-related brain injury, these findings are from animal models and cell cultures only—not human studies. The specific condition studied (sepsis-associated encephalopathy) is a severe medical emergency requiring hospital care, so these results cannot be applied to general wellness use of hydrogen water. More research, including human trials, would be needed before any clinical recommendations could be made.
Abstract (excerpt)
Objective: Sepsis-associated encephalopathy (SAE) is characterized by diffuse cerebral and central nervous system (CNS) dysfunction. Microglia play a vital role in protecting the brain from neuronal damage, which is closely related to inflammatory responses. The Nrf2 signaling pathway has an impact…