[Determination of reactive oxygen species in mitochondria by fluorometric probe].

Jin Lei Nie, Qing De Shi, Yong Zhang, Xiao Ming Li, Shu Sen Liu

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)


AIM AND METHODS: Based on the reaction that 2',7'-dichlorodihydrofluorescein (DCFH) can be oxidized by reactive oxygen species (ROS) to yield the highly fluorescent 2',7'-dichlorofluorescin (DCF), ROS production in mitochondria can be observed dynamically as well as quantified directly by spectrofluorometer. RESULTS AND CONCLUSION: DCF fluorescence showed linear increase in State 4 mitochondria, which suggest ROS produced at constant rate. The slopes of the linear increase in fluorescence with time were computed performing a linear regression that took into account all relevant data points in selected time windows. The slopes were proportional to ROS production in mitochondria. Addition of sodium azide and malonic acid increased and decreased the rate of ROS production respectively during measurement. DCF fluorescence varied linearly with increasing concentration of mitochondria, which showed quantitative relations in definite range. Repeated measures showed low coefficients of variation. This method is reliable and efficient for determining ROS in mitochondria.

頁(從 - 到)196-198
期刊Zhongguo ying yong sheng li xue za zhi = Zhongguo yingyong shenglixue zazhi = Chinese journal of applied physiology
出版狀態Published - 5月 2002


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