Medical Gases Show Promise for Treating Sepsis by Protecting the Gut
- Authors
- Tetsuya Yumoto, Takafumi Obara, Hiromichi Naito, Atsunori Nakao
- Journal
- Biomolecules
- Year
- 2026
- DOI
- 10.3390/biom16020199
- Study Type
- clinical
- Peer Reviewed
- Yes
- Country
- Japan
- Health Condition
- Sepsis
- Body System
- Gastrointestinal
TL;DR
Scientists found that certain gases like hydrogen and carbon monoxide might help save people with a dangerous blood infection called sepsis by protecting the gut and stopping harmful inflammation in the body.
Key Finding
Hydrogen gas demonstrates antioxidative, anti-inflammatory, and cell-protective properties that may help preserve gut barrier function in sepsis through activation of specific molecular pathways like Nrf2 and inhibition of NF-κB.
Summary
This review examines how hydrogen gas and similar medical gases might help treat sepsis, a serious condition where the body's response to infection causes widespread damage. The gut (intestines) plays an important role in sepsis by allowing harmful inflammation to spread throughout the body. Hydrogen and related gases appear to reduce inflammation, protect cells from damage, and strengthen the intestinal barrier through specific biological pathways, though most evidence so far comes from laboratory and animal studies rather than human trials.
Practical Takeaway
While this review identifies hydrogen as a promising research direction for sepsis treatment, the evidence is primarily from preclinical (laboratory and animal) studies. No human clinical trials are mentioned, so it is far too early to consider hydrogen gas a proven sepsis therapy. Anyone with sepsis requires immediate medical care from healthcare professionals.
Abstract
Sepsis is a life-threatening condition characterized by a dysregulated host response to infection, often resulting in multiorgan dysfunction. Among affected systems, the gastrointestinal tract plays a central role in sepsis progression by promoting systemic inflammation through impaired barrier function, immune imbalance, and microbiome alterations. Recent research has identified selected medical gases and gasotransmitters as promising therapeutic candidates for preserving gut integrity in sepsis. In particular, hydrogen, carbon monoxide, and hydrogen sulfide exhibit antioxidative, anti-inflammatory, and cytoprotective properties. These gases act through defined molecular pathways, including activation of Nrf2, inhibition of NF-κB, and preservation of tight junction integrity, thereby supporting intestinal barrier function. In addition, they influence immune cell phenotypes and autophagy, with indirect effects on the gut microbiome. Although most supporting evidence derives from preclinical models, translational findings and emerging safety data highlight the potential of gut-targeted gas-based strategies. This review summarizes current mechanistic and translational evidence for gut-protective medical gases in sepsis and discusses their integration into future organ-specific and mechanism-based therapeutic approaches.