作者:Carl Elovson Grey、Patrick Adlercreutz
DOI:10.1080/15257770500446956
日期:2006.4.1
The influence of incubation time and Fenton reagent concentrations was investigated on the oxidation of 2′-deoxyguanosine. The compounds identified and quantified, through use of an LC-MS/MS system, were 8-oxo-7,8-dihydro-2′-deoxyguanosine (8-oxodG) and 8,5′-cyclo-2′-deoxyguanosine (8,5′cyclodG) and the secondary oxidation products guanidinohydantoin and dehydro-guanidinohydantoin. 8-oxodG and 8,5′cyclodG
研究了孵育时间和 Fenton 试剂浓度对 2'-脱氧鸟苷氧化的影响。通过使用 LC-MS/MS 系统鉴定和定量的化合物是 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) 和 8,5'-cyclo-2'-deoxyguanosine ( 8,5'cyclodG) 和二次氧化产物胍基乙内酰脲和脱氢-胍基乙内酰脲。8-oxodG 和 8,5'cyclodG 形成得非常快,迅速达到最大值,但由于 8-oxodG 进一步氧化为次级产物,形成较慢,此后迅速下降。由于更好的稳定性,8,5'cyclodG 与一般氧化水平的相关性比 8-oxodG 更好。结果强调了测量其他氧化加合物比单独测量 8-oxodG 的优势。