首页> 外国专利> SYSTEM FOR SIMPLY AND HIGHLY SENSITIVELY ASSAYING OXIDATIVE DAMAGE INDEX OF DNA IN BIOLOGICAL SAMPLE

SYSTEM FOR SIMPLY AND HIGHLY SENSITIVELY ASSAYING OXIDATIVE DAMAGE INDEX OF DNA IN BIOLOGICAL SAMPLE

机译:用于简单,高灵敏度地评估生物样品中DNA氧化损伤指数的系统

摘要

PROBLEM TO BE SOLVED: To simply, stably and highly sensitively assay the oxidative damage index of DNA in a biological sample.;SOLUTION: An antioxidizing storage liquid for biological samples, comprising an aqueous solution containing 0.5 to 2 mM/L of EDTA, 2 to 5 wt.% of methanol, and 10 to 40 wt.% of glycerol. The system for assaying the oxidative damage index of DNA in a biological sample, characterized by comprising a one to five - fold amount of the antioxidation storage liquid 2 for being mixed with a biological sample 1 and cooled, a device for performing a microdialysis treatment 4 comprising perfusing a perfusion liquid comprising an aqueous glycerol solution in a dialysis membrane tube immersed in a liquid biological sample mixed with the antioxidation storage liquid, thus inhibiting the passage of substances having mol.wts. of 20 to ≥50 kD and controlling the glycerol concentration target value of the recovered liquid to 10 to 20 wt.%, a high performance liquid chromatograph 5 having a column for separating the dialyzed and recovered low mol.wt. DNA-related substances, an ultraviolet light absorption analyzer 6 for subjecting a column effluent to an ultraviolet light absorption analysis to measure the amount of DNA nucleic acid, and an electrochemical detector 7 for measuring the amount of the oxidatively damaged DNA by the electrochemical detection, and determining the oxidative damage index of the DNA in the biological sample from the ratio of the measured DNA nucleic acid amount to the oxidatively damaged DNA amount.;COPYRIGHT: (C)2001,JPO
机译:解决的问题:为了简单,稳定和高度灵敏地测定生物样品中DNA的氧化损伤指数;解决方案:生物样品的抗氧化储存液,其包含0.5至2 mM / L EDTA的水溶液,2至5重量%的甲醇和10至40重量%的甘油。一种用于测定生物样品中DNA的氧化损伤指数的系统,其特征在于,包括用于与生物样品1混合并冷却的1-5倍量的抗氧化存储液2,用于进行微透析处理的装置4。所述方法包括在透析膜管中灌注包含甘油水溶液的灌注液,所述透析膜管浸入与抗氧化存储液混合的液体生物样品中,从而抑制具有mol.wts的物质的通过。高效液相色谱仪5具有20至+ 50kD的压力,并将回收液体的甘油浓度目标值控制为10至20wt。%,该色谱仪5具有用于分离透析和回收的低mol.wt的塔。 DNA相关物质,用于对柱流出物进行紫外线吸收分析以测量DNA核酸量的紫外线吸收分析器6,以及用于通过电化学检测来测量氧化损伤的DNA的量的电化学检测器7,并根据测得的DNA核酸量与氧化损伤DNA量的比值确定生物样品中DNA的氧化损伤指数。;版权所有:(C)2001,日本特许厅

著录项

  • 公开/公告号JP2001258597A

    专利类型

  • 公开/公告日2001-09-25

    原文格式PDF

  • 申请/专利权人 EIKOMU:KK;NISSEI BIO KK;

    申请/专利号JP20000074200

  • 发明设计人 SHIMIZU NOBUAKI;TAKAGI KOJI;

    申请日2000-03-16

  • 分类号C12Q1/68;C12M1/00;C12Q1/02;G01N30/64;G01N30/88;G01N33/50;

  • 国家 JP

  • 入库时间 2022-08-22 01:32:34

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