In vivo real-time monitoring and evaluation for superoxide anion radical generation with an electrochemical sensor

Creators Fujita Motoki

Creators Maekawa Tsuyoshi

Creators Todani Masaki

Creators Tsuruta Ryosuke

Recently, we established an in vivo method to directly and continuously monitor and evaluate {O_2}^{-.} using an electrochemical {O_2}^{-.} sensor. The generated {O_2}^{-.} is measured as a current and evaluated as a difference in the current from the baseline to the actual reacted {O_2}^{-.} current (ΔI) and a quantified partial value of electricity (Q), which is calculated by integration of differences between baseline and actual reacted current. To clarify the dynamics of {O_2}^{-.} in vivo and their {O_2}^{-.}-related pathophysiology, the accuracy and efficacy of this method were confirmed in phosphate-buffered saline and human blood and we applied this sensor to rat models of endotoxemia, forebrain ischemia-reperfusion (FBI/R), and heatstroke. This is a novel method for measuring {O_2}^{-.} in vivo, and could be used to monitor and treat the pathophysiology caused by excessive {O_2}^{-.} generation in animals and humans.

[ISSN]0513-1812

[NCID]AA00594272