Hydrogen inhalation: A novel approach to alleviating allergic rhinitis symptoms by modulating nasal flora.
Nan Wang, Qianzi Ma, Jiayuan Zhai, Yanlu Che, Junjie Liu, Tianwei Tang, Yanan Sun, Jingting Wang, Wanchao Yang · The World Allergy Organization journal · 2024
Research-use notice
Independent study record
Each H2HUBB study page organizes source-linked research details for educational use. Interpretation should remain proportional to the study design, population, controls, and limitations.
H2HUBB TAKEAWAY
Cavity flora 16S rRNA gene sequencing showed higher abundance of Ruminococcus and Erysipelotrichaceae flora in the nasal cavity of AR patients than in normal participants, and their abundance could be down-regulated after H₂ inhalation. This source-grounded publication contributes evidence relevant to molecular hydrogen and is retained in a transparent general research category when a more specific study design is not supported by the indexed record.
What the Findings Mean
H2HUBB reviewed how inhaled hydrogen gas was evaluated in this publication and summarizes the source-grounded findings below. Cavity flora 16S rRNA gene sequencing showed higher abundance of Ruminococcus and Erysipelotrichaceae flora in the nasal cavity of AR patients than in normal participants, and their abundance could be down-regulated after H₂ inhalation.
What the Researchers Studied
The comparison condition was control condition or baseline measurements.
What Effects Did Molecular Hydrogen Have?
Source-reported hydrogen concentration: 66.6% source-reported H₂ gas concentration; Source-reported hydrogen exposure: 66.6% source-reported H₂ gas concentration. Cavity flora 16S rRNA gene sequencing showed higher abundance of Ruminococcus and Erysipelotrichaceae flora in the nasal cavity of AR patients than in normal participants, and their abundance could be down-regulated after H₂ inhalation. The authors concluded that H₂ may improve symptoms in AR patients by modulating the distribution of nasal flora. Hydrogen (H₂) is a medical molecule with anti-inflammatory and antioxidant properties. Yu et al reduced oxidative stress and alleviated allergic symptoms in a mouse model of AR by increasing superoxide dismutase (SOD) levels with hydrogen-enriched water.
Why These Findings Matter
These findings add evidence supporting molecular hydrogen's therapeutic potential within the biological process and outcomes directly measured in this publication and contribute to the growing body of molecular-hydrogen research.
How Strong Is This Evidence?
H2HUBB classifies this publication as other research and interprets only the outcomes directly supported by the source record.
Technical Study Details
H2HUBB classifies this publication as other research with other supported evidence. The reported sample size was 6. The hydrogen delivery method was inhaled hydrogen gas. The source-reported hydrogen concentration was 66.6% source-reported H₂ gas concentration.
Limitations and Safety
No separate limitations or safety findings were identified in the source text available to H2HUBB.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.