Hydrogen May Inhibit Collagen-Induced Platelet Aggregation: An ex vivo and in vivo Study

Hideo Osada, Hiroshi Nawashiro, Kimihiro Nagatani, Kojiro Wada, Naoki Otani, Satoru Takeuchi

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DOI: 10.2169/internalmedicine.51.7161 DOI is the universal ID for this study.

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Hydrogen selectively reduces hydroxyl radicals and peroxynitrite, and numerous experimental and clinical studies suggest that hydrogen can exert potent cellular protective effects against a wide variety of diseases. Furthermore, there is increasing evidence that antioxidants can modulate platelet activation. The aim of the present study was to investigate the relationship between hydrogen and collagen-induced platelet aggregation. For human ex vivo studies, we collected blood samples from six healthy humans and added normal saline or hydrogen-rich saline to blood and platelet-rich plasma. We found that collagen (1 µg/mL)-induced platelet aggregation was significantly inhibited by hydrogen-rich saline compared with a normal saline group (p=0.044). For rat in vivo studies, animals (n=17) were exposed to either nitrogen-based mixed gas with hydrogen (H2 gas group; n=9) or without hydrogen (non-H2 gas group; n=8). Additionally, another animals (n=13) administered either normal (NS group; n=7) or hydrogen-rich saline (HS group; n=6) (5 ml/kg) via intravenous infusion. Blood samples were drawn from the vena cava before treatment and from the right ventricle after treatment. Collagen (12 µg/mL)-induced platelet aggregation was then measured. Collagen-induced platelet aggregation was significantly decreased in H2 gas and HS group rats (p=0.042, 0.018, respectively), while there was no difference in non-H2 gas and NS group rats before and after treatment. In summary, these data suggest that hydrogen may inhibit collagen-induced platelet aggregation.

Publish Year 2012
Country Japan
Rank Positive
Journal Internal Medicine
Primary Topic Blood
Secondary TopicBlood Composition
Model Rat
Tertiary TopicPlatelet Aggregation
Vehicle Saline (Dissolved)
pH Neutral
Application Injection