Analysis of Peroxynitrite Reactions with Guanine, Xanthine, and Adenine Nucleosides by High-Pressure Liquid Chromatography with Electrochemical Detection: C8-Nitration and -Oxidation
作者:Rama S. Sodum、Emerich S. Fiala
DOI:10.1021/tx000189s
日期:2001.4.1
reaction product of nitric oxide and superoxide anion, and a powerful oxidant, was found to nitrate as well as oxidize adenine, guanine, and xanthine nucleosides. A highly sensitive reverse-phase HPLC method with a dual-mode electrochemical detector, which reduces the nitro product at the first electrode and detects the reduced product by oxidation at the second electrode, was applied to detect femtomole
一氧化氮与一氧化氮和超氧阴离子的反应产物,也是一种强氧化剂,被发现能硝化并氧化腺嘌呤,鸟嘌呤和黄嘌呤核苷。具有双模式电化学检测器的高灵敏度反相HPLC方法可检测第一电极上的硝基产物并通过第二电极上的氧化来检测还原产物,该方法可检测8-硝基鸟嘌呤和8-鸟嘌呤的fe浓度。硝氧鸟嘌呤。该方法用于从核苷与过氧亚硝酸盐的反应中分离和鉴定硝化和氧化的产物。过氧化亚硝酸盐在中性pH值下将脱氧鸟苷硝酸盐除8-硝基鸟嘌呤外还产生非常不稳定的8-硝基脱氧鸟苷。8-硝基脱氧鸟苷,在室温下的半衰期约为10分钟,