# Therapeutic effects of hydrogen on chronic graft-versus-host disease.
> 水素が慢性移植片対宿主病に及ぼす効果：マウスモデルを用いた検討


## Abstract

Chronic graft-versus-host disease (cGVHD) represents a leading cause of non-relapse mortality following allogeneic hematopoietic stem cell transplantation, with inflammatory cytokine dysregulation and fibrosis as central pathogenic drivers. Using an MHC-incompatible murine bone marrow transplantation model, this study examined whether hydrogen-rich saline administration could mitigate cGVHD. Survival rates and skin lesion severity were monitored after transplantation. Mice receiving hydrogen-rich saline showed improved survival and reduced skin pathology compared with controls. These findings extend prior observations on hydrogen in acute GVHD to the chronic form, suggesting that the anti-inflammatory, antioxidant, and anti-fibrotic properties of molecular hydrogen may contribute to beneficial outcomes in cGVHD.

### Mechanism

Molecular hydrogen is proposed to suppress cGVHD pathology by counteracting inflammatory cytokine imbalance and tissue fibrosis through its anti-inflammatory, antioxidant, and anti-fibrotic properties.

## Bibliographic

- **Authors**: Qian L, Liu X, Shen J, Zhao D, Yin W
- **Journal**: J Cell Mol Med
- **Year**: 2017
- **PMID**: [28374556](https://pubmed.ncbi.nlm.nih.gov/28374556/)
- **DOI**: [10.1111/jcmm.13155](https://doi.org/10.1111/jcmm.13155)
- **PMC**: [PMC5618705](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5618705/)
- **Study type**: animal study
- **Delivery route**: injection / infusion
- **Effect reported**: positive

## Delivery context

Intravenous hydrogen-saline infusion is a clinic-only route and is not viable for everyday self-administration. For routine hydrogen intake, inhalation is the most practical route, but inhalation carries explosion risk and concentration matters (empirical LFL of 10%; high-concentration 66% / 100% devices are not recommended).

## Safety notes

Intravenous hydrogen-saline infusion is a clinic-only route and is not viable for everyday self-administration. For routine hydrogen intake, inhalation is the most practical route, but inhalation carries explosion risk and concentration matters (empirical LFL of 10%; high-concentration 66% / 100% devices are not recommended).

See also:
- [Inhalation concentration and LFL / UFL](https://h2-papers.org/en/safety-notes/inhalation-concentration)
- [Consumer Affairs Agency accident cases](https://h2-papers.org/en/safety-notes/accident-cases)
- [Inhalation safety threshold lineage](https://h2-papers.org/en/safety-notes/lineage)

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> **Cite as**: H2 Papers — PMID 28374556. https://h2-papers.org/en/papers/28374556
> **Source**: PubMed PMID [28374556](https://pubmed.ncbi.nlm.nih.gov/28374556/)