Medical Gases Like Hydrogen Show Promise for Organ Protection
- Authors
- Ross D. Zafonte, Lei Wang, Christian A. Arbelaez, Rachel Dennison, Yang D. Teng
- Journal
- Advanced Science
- Year
- 2022
- DOI
- 10.1002/advs.202104136
- Study Type
- clinical
- Peer Reviewed
- Yes
- Country
- United States
- Health Condition
- Organ Failure
- Body System
- Nervous System
TL;DR
Scientists found that certain gases like carbon monoxide, hydrogen, and xenon can protect our cells and organs from damage by turning on special healing pathways inside our bodies, which could help treat serious injuries and organ failure—but they need to do more real-world testing to prove it actually works in patients.
Key Finding
Medical gases including hydrogen may protect cells and organs through multiple biological pathways that reduce inflammation and oxidative stress, but most evidence comes from animal and laboratory studies rather than human trials.
Summary
This systematic review examined how medical gases—including hydrogen, carbon monoxide, and xenon—might protect cells and organs from damage. Researchers found that these gases appear to work by triggering protective pathways inside cells that reduce harmful inflammation, oxidative stress (cellular damage from unstable molecules), and cell death. However, most studies were conducted in animals or laboratory settings, and the authors note that large-scale human studies are still needed to confirm whether these gases can safely treat serious conditions like organ failure or brain injury.
Practical Takeaway
While this review suggests hydrogen gas has theoretical protective potential based on laboratory and animal research, the authors emphasize that translational gaps remain—meaning we don't yet have sufficient large-scale human evidence to confirm clinical benefits. Anyone considering hydrogen water or hydrogen gas therapy should recognize that this systematic review supports the scientific rationale for further investigation, but does not establish proven health benefits in humans.
Abstract
Gaseous molecules have been increasingly explored for therapeutic development. Here, following an analytical background introduction, a systematic review of medical gas research is presented, focusing on tissue protections, mechanisms, data tangibility, and translational challenges. The pharmacological efficacies of carbon monoxide (CO) and xenon (Xe) are further examined with emphasis on intracellular messengers associated with cytoprotection and functional improvement for the CNS, heart, retina, liver, kidneys, lungs, etc. Overall, the outcome supports the hypothesis that readily deliverable “biological gas” (CO, H2, H2S, NO, O2, O3, and N2O) or “noble gas” (He, Ar, and Xe) treatment may preserve cells against common pathologies by regulating oxidative, inflammatory, apoptotic, survival, and/or repair processes. Specifically, CO, in safe dosages, elicits neurorestoration via igniting sGC/cGMP/MAPK signaling and crosstalk between HO-CO, HIF-1α/VEGF, and NOS pathways. Xe rescues neurons through NMDA antagonism and PI3K/Akt/HIF-1α/ERK activation. Primary findings also reveal that the need to utilize cutting-edge molecular and genetic tactics to validate mechanistic targets and optimize outcome consistency remains urgent; the number of neurotherapeutic investigations is limited, without published results from large in vivo models. Lastly, the broad-spectrum, concurrent multimodal homeostatic actions of medical gases may represent a novel pharmaceutical approach to treating critical organ failure and neurotrauma.