Hydrogen Gas Inhalation Revives Failing Immune System in Septic Shock Patient
- Authors
- Chang-Lung Wu, Jeng-Wei Lu, Yi-Jung Ho, Shan-Wen Lui, Ting-Yu Hsieh, Kuang-Yih Wang, Feng-Cheng Liu
- Journal
- In Vivo
- Year
- 2026
- DOI
- 10.21873/invivo.14410
- Study Type
- Human
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- Taiwan
- Health Condition
- Septic Shock
- Body System
- Immune System
TL;DR
Hydrogen inhalation was followed by temporary cardiac and immune improvements in one critically ill patient, but causation cannot be established.
Key Finding
Hydrogen gas inhalation was associated with reversal of immune exhaustion markers in T-cells and B-cells in a patient with life-threatening sepsis, including reduced expression of cell death signals and restoration of immune checkpoint proteins.
Summary
This case report describes a critically ill 49-year-old man with severe sepsis and heart failure who received hydrogen gas as an experimental treatment. Researchers used advanced blood tests to track changes in his immune system over time. The hydrogen therapy appeared to reverse immune exhaustion (a state where immune cells stop fighting infection effectively) and showed signs of restoring normal immune function, though the patient ultimately did not survive due to his underlying heart and liver conditions.
Practical Takeaway
This is a single case report in a critically ill patient with multiple severe conditions, so findings cannot be generalized to healthy people or mild illness. While the immune changes observed are intriguing and suggest hydrogen may warrant further study in sepsis, this case alone does not establish that hydrogen therapy improves survival or clinical outcomes. Much larger and more rigorous clinical trials would be needed before any health recommendations could be made.
Abstract
Background/aim: Refractory septic shock and post-cardiac arrest syndrome (PCAS) can induce lethal immunoparalysis. However, longitudinal evidence on the effects of molecular hydrogen on deep human immunophenotyping remains scarce. Case report: We report the case of a 49-year-old man with severe tricuspid regurgitation and Child-Pugh class B alcoholic cirrhosis who developed severe pneumonia, refractory septic shock, and PCAS after high-energy thoracic trauma. At a therapeutic impasse marked by high levels of N-terminal pro-B-type natriuretic peptide (NT-proBNP) (>35,000 pg/ml) and profound immune depletion, adjuvant hydrogen inhalation was initiated, which led to a 64% reduction in myocardial stress and temporary clinical stabilization. Deep longitudinal flow cytometry unveiled system-wide immunological reprogramming. In the T-cell compartment, hydrogen induced a biphasic resolution of exhaustion in T-helper cells marked by an immediate decline in expression of FAS cell surface death receptor (FAS; also known as CD95) and asynchronous normalization of expression of programmed cell death protein 1 (PD1) and T-cell immunoglobulin and mucin domain 3 (TIM3), alongside bidirectional restoration of physiological immune checkpoints in cytotoxic T-cells. Furthermore, we observed a sequential, compensatory recovery of the regulatory T-cell (Treg)/type 1 regulatory T-cell (Tr1) immune-braking system. In the humoral compartment, despite prolonged bone marrow suppression and loss of transitional/regulatory B-cells, hydrogen therapy was associated with a V-shaped recovery of plasma and double-negative (for both cluster of differentiation 27 and immunoglobulin D) B-cells. It also appeared to protect switched memory B-cells by markedly reducing FAS expression, suggesting an anti-apoptotic effect. Conclusion: Although the patient ultimately succumbed to irreversible chronic comorbidities on day 86, this case of severe tricuspid regurgitation and Child-Pugh class B alcoholic cirrhosis demonstrates profound yet transient immunological rescue. By disrupting the cycle of immune exhaustion and exerting anti-apoptotic effects, molecular hydrogen may represent a promising immunomodulatory adjunct in severe sepsis.