Antibacterial and antibiofilm effects of immobilized hydrogen on pathogenic oral bacteria
Kanta Sato, Minato Akizuki, Raras Ajeng Enggardipta, Rie Kido, Yuji Inagaki, Tomoko Sumitomo, Keiki Nambu, Hiromichi Yumoto · Journal of applied microbiology · 2026
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
In a laboratory model, all immobilized hydrogen suspensions significantly reduced the survival rates of the three oral bacteria, significantly increased the proportion of dead bacteria in the biofilm, and significantly decreased the biofilm-related gene expression levels in E. faecalis. The authors concluded that this study highlights the potential of immobilized hydrogen as a novel antibacterial material, owing to its antibacterial and antibiofilm activities against pathogenic oral bacteria. These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
What the Findings Mean
H2HUBB reviewed how molecular hydrogen was evaluated in this publication and summarizes the source-grounded findings below. All immobilized hydrogen suspensions significantly reduced the survival rates of the three oral bacteria, significantly increased the proportion of dead bacteria in the biofilm, and significantly decreased the biofilm-related gene expression levels in E. faecalis.
What the Researchers Studied
The study used a laboratory experiment.
What Effects Did Molecular Hydrogen Have?
Clinical applications of hydrogen have been investigated in the medical field. All immobilized hydrogen suspensions significantly reduced the survival rates of the three oral bacteria, significantly increased the proportion of dead bacteria in the biofilm, and significantly decreased the biofilm-related gene expression levels in E. faecalis. The authors concluded that this study highlights the potential of immobilized hydrogen as a novel antibacterial material, owing to its antibacterial and antibiofilm activities against pathogenic oral bacteria.
Why These Findings Matter
These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
How Strong Is This Evidence?
This is laboratory evidence from a laboratory experiment. It is most informative for the biological mechanisms, cellular responses, or biochemical outcomes directly measured.
Technical Study Details
H2HUBB classifies this publication as laboratory study with laboratory or cellular evidence. The study used a laboratory experiment.
Limitations and Safety
No separate limitations or safety findings were identified in the current-study 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.