The combination of hydrogen gas and hydrogen-rich solution does not protect against ischemic spinal cord injury in rabbits.
Atsuo Yamashita, Takehiko Fukui, Satoshi Yamashita, Kazuyoshi Ishida, Mishiya Matsumoto · Journal of anesthesia · 2024
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Independent study record
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H2HUBB TAKEAWAY
These results suggest that the combination of 1.2% H₂ gas inhalation and administration of a hydrogen-rich solution does not protect against ischemic spinal cord injury and that the increase in H₂ concentration in spinal cord tissue after administration of HS is very low compared to 1.2% H₂ gas inhalation. These results are preclinical and suggest molecular hydrogen's therapeutic potential in the condition studied. Further human research is needed to establish clinical effectiveness.
What the Researchers Studied
This study aimed to determine whether the combination of H₂ gas inhalation and administration of hydrogen-rich acetated Ringer's solution (HS) could protect against ischemic spinal cord injury in rabbits.
How Molecular Hydrogen Was Used
H₂ was inhaled for 60 min, starting 5 min before reperfusion. In Experiment 2, H₂ concentrations in spinal cord tissue according to the administration of 1.2% H₂ gas or HS were compared by measuring the electric current through a platinum needle electrode (n = 2).
What the Researchers Found
Bolus administration of HS (10 mL) transiently increased the current to only 1/30th and 1/27th of the plateau current with 1.2% H₂ gas inhalation in two animals.
H₂ Mechanisms / Biological Findings
The source material reviewed did not establish a specific molecular hydrogen mechanism for the reported findings.
Authors’ Conclusion
The authors concluded that these results suggest that the combination of 1.2% H₂ gas inhalation and administration of a hydrogen-rich solution does not protect against ischemic spinal cord injury and that the increase in H₂ concentration in spinal cord tissue after administration of HS is very low compared to 1.2% H₂ gas inhalation.