Downstream Signalling from Molecular Hydrogen.
John T Hancock, Grace Russell · Plants (Basel, Switzerland) · 2021
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
This narrative review examined the available molecular-hydrogen literature. Molecular hydrogen (H₂) is now considered part of the suite of small molecules that can control cellular activity. In conclusion, although the involvement of molecular hydrogen in plant function has been known for a long time [ 28 ], there is still considerable uncertainty surrounding the exact actions of H₂ in cells. The reviewed evidence adds support for molecular hydrogen's therapeutic potential across the conditions, mechanisms, or outcomes examined.
What the Findings Mean
H2HUBB reviewed this publication as a synthesis of molecular-hydrogen research and summarizes the outcomes emphasized by the authors. Molecular hydrogen (H₂) is now considered part of the suite of small molecules that can control cellular activity.
What the Researchers Studied
The authors reviewed downstream Signalling from Molecular Hydrogen.
What Effects Did Molecular Hydrogen Have?
One of the significant actions of H₂ in biological systems was suggested to be its ·OH scavenging activity [ 66 ], as reported in animal systems [ 132 ]. However, the biggest issue is the rate constant of the reaction between H₂ and ·OH, which is deemed to be too slow for physiological relevance [ 89 ], suggesting that the other biomolecules may react first anyway, and therefore H₂ would not influence the levels of oxidative stress. with H₂ not able to scavenge other ROS [ 66 ] and the effects of H₂ on both ·OH and ONOO – being ruled out [ 89 ], it appears that the scavenging role of H₂ may have limited effects in cells, at best. Molecular hydrogen (H₂) is now considered part of the suite of small molecules that can control cellular activity. The authors concluded that hopefully, this review will provide insight that may inform future research in this area.
Why These Findings Matter
The reviewed evidence adds support for molecular hydrogen's therapeutic potential across the conditions, mechanisms, or outcomes examined.
How Strong Is This Evidence?
This is review or synthesis evidence (narrative review).
Technical Study Details
H2HUBB classifies this publication as narrative review with review or synthesis evidence. The study used a narrative review. The hydrogen delivery method was hydrogen-rich water.
Limitations and Safety
Reported limitations: In conclusion, although the involvement of molecular hydrogen in plant function has been known for a long time [ 28 ], there is still considerable uncertainty surrounding the exact actions of H₂ in cells.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.