# Inadequate Production of Hby Gut Microbiota and Parkinson Disease.
> 腸内細菌叢による水素産生不足とパーキンソン病の病態との関連性に関する考察


## Abstract

Parkinson disease (PD) is associated with gut microbiota dysbiosis, although a definitive causal relationship has not been established. Intestinal microorganisms generate molecular hydrogen (H2), a biologically active gas with antioxidant, anti-apoptotic, anti-inflammatory, cytoprotective, and cell-signaling properties. This paper explores the hypothesis that reduced endogenous H2 production by intestinal bacteria may contribute to PD pathogenesis. The potential role of exogenous H2 supplementation as an investigational approach for this progressive neurodegenerative condition is also discussed, framing gut-derived H2 deficiency as a plausible mechanistic link between microbiome alterations and neurodegeneration.

### Mechanism

Reduced H2 output from dysbiotic gut microbiota may diminish antioxidant and anti-inflammatory signaling, thereby permitting elevated oxidative stress and neuroinflammation that could contribute to the progression of Parkinson disease.

## Bibliographic

- **Authors**: Ostojic SM
- **Journal**: Trends Endocrinol Metab
- **Year**: 2018
- **PMID**: [29478695](https://pubmed.ncbi.nlm.nih.gov/29478695/)
- **DOI**: [10.1016/j.tem.2018.02.006](https://doi.org/10.1016/j.tem.2018.02.006)
- **Study type**: review
- **Delivery route**: not specified
- **Effect reported**: not assessed

## Delivery context

The delivery route is not clearly identifiable from this paper. For hydrogen intake, inhalation is the most efficient route; inhalation, however, carries explosion risk (empirical LFL of 10%; high-concentration devices are not recommended).

## Safety notes

The delivery route is not clearly identifiable from this paper. For hydrogen intake, inhalation is the most efficient route; inhalation, however, carries explosion risk (empirical LFL of 10%; high-concentration 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)

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> **Cite as**: H2 Papers — PMID 29478695. https://h2-papers.org/en/papers/29478695
> **Source**: PubMed PMID [29478695](https://pubmed.ncbi.nlm.nih.gov/29478695/)