Molecular Hydrogen as an Antioxidant and Radioprotector: Mechanistic Insights from Monte Carlo Radiation-Chemical Simulations.
Sumaiya Akhter Ria, Jintana Meesungnoen, Jean-Paul Jay-Gerin · Antioxidants (Basel, Switzerland) · 2025
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, a pronounced decrease—by approximately 2.5 G -units—in G ( • OH) is observed in the 1–100 μs time range in the presence of added H₂ ( Figure 1 b), consistent with reaction (4), which highlights the strong • OH-scavenging capacity of molecular hydrogen. The authors concluded that although it is less potent than cystamine in terms of radical-scavenging efficiency, its excellent safety profile and biological compatibility position H₂ as a promising radioprotector and antioxidant for therapeutic applications targeting radiation-induced oxidative stress and inflammation. 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 hydrogen-rich water was evaluated in this publication and summarizes the source-grounded findings below. A pronounced decrease—by approximately 2.5 G -units—in G ( • OH) is observed in the 1–100 μs time range in the presence of added H₂ ( Figure 1 b), consistent with reaction (4), which highlights the strong • OH-scavenging capacity of molecular hydrogen.
What the Researchers Studied
The study used a laboratory experiment.
What Effects Did Molecular Hydrogen Have?
In the radiolysis of pure, deaerated (air-free) water by 60 Co γ rays, fast electrons, or several hundred MeV protons (LET ~0.3 keV/μm), the main reactive species present at homogeneity include the “radical” products e − aq, H •, and • OH, as well as the “molecular” products H₂ and H₂O₂. The yields of these species at this point in time, traditionally referred to as primary or “escape” yields, are as follows [ 1 ]. G (e − aq ) = 2.65, g (H • ) = 0.60, g (H₂ ) = 0.45, g ( • OH) = 2.80, g (H₂O₂ ) = 0.68. (9) It is noteworthy that a large portion of H₂ is produced during the early physicochemical stage of radiolysis, rather than through intra-spur chemical reactions [ 54, 55, 56 ]. as a gaseous product, radiolytically formed H₂ tends to escape readily from the solution. A pronounced decrease—by approximately 2.5 G -units—in G ( • OH) is observed in the 1–100 μs time range in the presence of added H₂ ( Figure 1 b), consistent with reaction (4), which highlights the strong • OH-scavenging capacity of molecular hydrogen. The authors concluded that although it is less potent than cystamine in terms of radical-scavenging efficiency, its excellent safety profile and biological compatibility position H₂ as a promising radioprotector and antioxidant for therapeutic applications targeting radiation-induced oxidative stress and inflammation. Nevertheless, its scavenging efficiency was consistently lower than that of cystamine, which produced a faster and more pronounced suppression of •OH due to its higher reactivity and superior radical-quenching capacity; Molecular hydrogen offers several unique advantages, including low toxicity, high diffusivity, selective scavenging of •OH radicals, and well-documented anti-inflammatory effects.
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. The hydrogen delivery method was hydrogen-rich water.
Limitations and Safety
Reported limitations: The number of simulated proton histories (typically 40–100) was selected to ensure minimal statistical uncertainty in the averaged chemical yields while maintaining reasonable computational times. Safety information: Although it is less potent than cystamine in terms of radical-scavenging efficiency, its excellent safety profile and biological compatibility position H₂ as a promising radioprotector and antioxidant for therapeutic applications targeting radiation-induced oxidative stress and inflammation.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.