作　　者： ; ; ; ; ; (周丹）;

机构地区： 中国人民解放军后勤工程学院

出　　处： 《分析试验室》 2007年第11期67-69,共3页

摘　　要： 采用HPLC-UV与反相C18柱,以50 mmol/L的KH2PO4（pH 5.5）-10%的甲醇（V/V）作为洗脱液,同步快速检测了21位健康人与90位病人胃粘膜活检组织中的脱氧鸟苷（deoxyguanosine,dG）和8-羟基脱氧鸟苷（8-Hydroxydeox-yguanosine,8-OHdG）的量。方法线性范围分别为3.0～400μg/mL、0.2～10μg/mL,检出限可分别达到1.0、0.1μg/mL（S/N=3）。实验发现病人胃粘膜活检组织中的8-OHdG量远远高于健康人,此结果在临床早期诊断相关疾病方面具有很高的应用价值。 8-Hydroxydeoxyguanosine （8-OHdG） has been widely used as a biomarker of oxidative DNA damage in livings. However, the levels of 8-OHdG aren＇t available on other exposure such as human gastric mucosal biopsy. In this paper, we simultaneously investigated the levels of 8-OHdG and dG in DNA from human gastric mucosal biopsy with HPLC-UV. The analysis was performed on a RP-18 analytical column using potassium phosphate buffer （50 mmol/L, pH 5.5）-methanol （90/10, V/ V） as eluent. The calibration graph for 8-OHdG was linear in the concentration range of 0.2 - 10μg/mL, and the limit of detection was 0.1μg/mL（signal to noise ratio S/N = 3）. The concentration of 8-OHdG in 21 healthy persons and 90 patients＇ gastric mucosal biopsy was determined. It was found that levels of 8-OHdG in patients was significantly higher than those in healthy persons （p 〈 0. 001 ）, the results demonstrated that 8-OHdG may be a good marker for diagnosis of some illness.

关 键 词： 羟基脱氧鸟苷 胃粘膜活检组织

领　　域： [理学] [理学]