Effect of Hydrogen Gas on the Survival Rate of Mice Following Global Cerebral Ischemia.

Hiroaki Kobayashi, Hiroshi Nawashiro, Kimihiro Nagatani, Kojiro Wada, Masanori Fujita, Naoki Otani, Satoru Takeuchi, Shoichi Tachibana, Yoichi Uozumi

Read more:

DOI: 10.1097/SHK.0b013e31824ed57c DOI is the universal ID for this study.

This link will take you to the full study.


Global cerebral ischemia and reperfusion (I/R) often result in high mortality. Free radicals have been reported to play an important role in global cerebral I/R, and therefore, reduction of these might improve the outcome. Here, we investigated the effect of hydrogen gas (H2) (a strong free radical scavenger) on the survival rate of mice following global cerebral I/R. We further examined the histopathological outcome and also the brain water content (as a possible determinant of mortality). Male C57BL/6J mice were subjected to global cerebral I/R by means of 45-min bilateral common carotid artery occlusion (BCCAO). A total of 160 mice were divided into three groups: sham surgery (sham group), BCCAO without H2 (BCCAO group), and BCCAO treated with 1.3% H2 (BCCAO + H2 group). We observed that H2 treatment significantly (P = 0.0232) improved the 7-day survival rate of mice, from 8.3% (BCCAO group, n = 12) to 50% (BCCAO + H2 group, n = 10). Histopathological analysis revealed that H2 treatment significantly attenuated neuronal injury and autophagy in the hippocampal cornu ammonis 1 sector and also brain edema, after 24 h of reperfusion. The beneficial effects of H2 treatment on brain injury were associated with significantly lower levels of oxidative stress markers (8-hydroxy-2'-deoxyguanosine and malondialdehyde) in the brain tissue. Thus, we believe that H2 may be an effective treatment for global cerebral I/R.

Publish Year 2012
Country Japan
Rank Positive
Journal Shock
Primary Topic Brain
Secondary TopicBrain Injury
Model Mouse
Tertiary TopicIschemia-Reperfusion Injury
Vehicle Gas
pH N/A
Application Inhalation