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DCFH2 interactions with hydroxyl radicals and other oxidants--influence of organic solvents.

机译:DCFH2与羟基自由基和其他氧化剂的相互作用-有机溶剂的影响。

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摘要

The oxidation of 2',7'-dichlorofluorescin (DCFH(2)) is widely used as a measure to detect the generation of reactive oxygen species (ROS) and to analyze oxidative stress. Other factors beside commonly known radicals may influence the results of such measurements. Therefore, the effects of H(2)O(2), KMnO(4,) decomposition products of AAPH, ethanol and DMSO, antioxidants like ascorbic acid, different ferrous ion chelates, and heme-containing proteins like cytochrome c, myoglobin, hemoglobin, and horseradish-peroxidase were comparatively analyzed with respect to their impact on DCFH(2) oxidation. The study evaluates the effects of various oxidants with different oxidative potentials regarding their ability to induce DCF-fluorescence. Furthermore, we analyzed the inhibitory effect of organic solvents like ethanol or DMSO on the oxidation of DCFH(2) by hydroxyl radicals. The results of our study indicate that the potential of an oxidant does not always correlate with its efficiency to generate DCF-fluorescence.
机译:2',7'-二氯荧光素(DCFH(2))的氧化被广泛用作检测活性氧(ROS)生成并分析氧化应激的一种措施。除众所周知的自由基外,其他因素也可能影响此类测量的结果。因此,AAPH,乙醇和DMSO的H(2)O(2),KMnO(4)分解产物,抗氧化剂(如抗坏血酸),不同的亚铁离子螯合物和含血红素的蛋白质(如细胞色素c,肌红蛋白,血红蛋白)的影响,和辣根过氧化物酶相对于DCFH(2)氧化的影响进行了比较分析。该研究评估了具有不同氧化电位的各种氧化剂对DCF荧光诱导能力的影响。此外,我们分析了有机溶剂(如乙醇或DMSO)对DCFH(2)被羟基自由基氧化的抑制作用。我们的研究结果表明,氧化剂的潜力并不总是与其产生DCF荧光的效率相关。

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