雌二醇的水凝胶毛细管电泳免疫分析

雌二醇是雌性激素中最重要和作用最强的一种激素 .临床上 ,雌二醇的长期监测可用于研究与激素相关的致癌物作用机理、绝经期妇女的雌激素补充及不孕病人的跟踪治疗等方面 .研究发现 ,人体中雌二醇含量与某些肿瘤如乳腺癌、子宫癌和肝癌等密切相关 [1] .由于雌二醇在体液中含量很低 ,难于测定 .免疫分析法的出现给雌二醇的测定带来了变革 ,提高了测定的灵敏度和特异性 .目前测定雌二醇的免疫分析方法有放射免疫分析法 ( RIA) [2 ]、酶免疫分析法 ( EIA) [3～ 7]、荧光免疫分析法 ( FIA) [8]和化学发光与生物发光免疫分析法 [9,10 ] .但 R…     

毛细管电泳免疫分析

本文首先对毛细管电泳免疫分析进行了对比。然后,从毛细管电泳免疫分析的不同免疫模式和不同电泳模式两方面以及技术进展,对近几年毛细管电泳免疫分析的多个应用领域进行了综述。     

毛细管电泳免疫分析法研究癌胚抗原与抗体相互作用

采用毛细管电泳免疫分析法研究癌胚抗原和抗体相互作用.探讨了缓冲体系、癌胚抗原和抗体的配比、进样时间,进样电压等因素对分离检测的影响.结果表明分离电压为14 kV,进样时间为10 s, 在pH值为5.92的Tris-乙酸缓冲体系（TAE）中, 癌胚抗原及其复合物得到较满意的分离.     

蛋白质样品的非竞争性毛细管电泳免疫分析激光诱导荧光检测

以牛血清白蛋白与其单克隆抗体为样品,初步研究了蛋白质的非竞争性毛细管电泳免疫分析方法。混合温育可以在２０ｍｉｎ内达到平衡,电泳分离在１２ｍｉｎ内完成。当示踪物浓度为３２０ｎｍｏｌ／Ｌ时,所得到的标准曲线的线性范围为８￣１５０ｎｍｏｌ／Ｌ,检出限为５ｎｍｏｌ／Ｌ,并考察了缓冲溶液的浓度、ｐＨ、分离电压等因素的影响。     

非竞争性毛细管电泳免疫分析乙肝表面抗原

用硫脲标记乙肝抗体(抗-HBs),基于抗原．抗体高选择性识别,建立了非竞争性毛细管电泳免疫分析乙肝表面抗原的新方法。研究了混合温育时间、缓冲溶液酸度和浓度、进样时间的影响。在5mmol／L Tris-20mmol／L H3BO3-3mmol／L EDTA(pH7．0)的运行缓冲溶液中,游离的标记抗体和抗原抗体复合物在15min内完全分离。HBsAg在4．0—50mg／L范围内与复合物的峰面积呈良好的线性关系;相对标准偏差小于6％;检出限为3．0mg／L。该方法用于乙肝病人血清和正常人血清中HBsAg的测定,结果令人满意。     

毛细管电泳免疫分析的发展及动向

毛细管电泳免疫分析是一种新兴的免疫分析技术，较常规免疫分析方法具有很多的优越性。本文对毛细管电泳免疫分析近几年的发展情况作了总结，并对其发展的动向作了评述。     

利用激光喇曼装置进行毛细管电泳—激光诱导荧光实验

细管电泳（ｅｌｅｃｔｒｏｐｈｏｒｅｓｉｓ，ＣＥ）是一种高效、快速的新型分析方法，尤其适合于肽、蛋白质及核苷酸等生理活性大分子的分离。ＣＥ通常以内径小于１００μｍ弹性石英管为分离通道，受光程和进样量的限制，常用的紫外吸收检测无法满足低浓度物质检测的需求...     

集成毛细管电泳芯片系统的制作、测试及应用

使用标准光刻和化学湿法腐蚀技术,在玻璃板材上制作了由样样管道和分离管道内构成的集成毛细管网路系统,对影响芯片质量的一些因素进行了讨论,并进行了性能测试和评价。芯片上毛细管道散热良好。使用激光诱导荧光和CCD成像检测系统,以电渗作用为驱动力,对混合样品进行了进样、快速分离（20s以内）和监测,证明了自制集成毛细管电泳芯片及检测系统的可行性。比较了两种注样方式（float和pinched)的不同;证明了在分离时可以优化加电策略,防止拖尾,改善峰形。     

毛细管电泳——基因突变及多态性分析新方法

着重介绍基因突变及多态性分析方法以及毛细管在电泳在该领域中的应用。主要包括单链构象多态性分析,变性梯度及温度梯度电泳,杂合子分析,限制性片段多态性分析,等位基因特异性扩增,核酸杂交,引物扩展及小卫星和微卫星分析。     

增强型电荷耦合器件用于毛细管电泳激光诱导荧光的检测

增强型电荷耦合器件用于毛细管电泳激光诱导荧光的检测马明生，吴晓军，刘国诠（中国科学院化学研究所，北京，１０００８０）关键词增强型电荷耦合器件，激光诱导荧光，毛细管电泳，异硫氰酸荧光黄近年来，毛细管电泳技术在生化分离、分析中得到广泛的应用。目前，毛细管...     

Electrochemical Determination of Cortisol by Capillary Electrophoretic Enzyme Immunoassay

In recent years, capillary electrophoretic immunoassay (CEIA) has become a primary analytical tool in clinical diagnostics. The primary detection methods in CEIA are UV absorbance detection and laser induced fluorescence detection (LIF)1. The major disadvantages of the UV detector are the lack of sensitivity and not available for many antigens which are small molecules without strong UV absorbance. LIF is a more general approach to improve sensitivity. However, it is difficult to u…     

Determination of Thyroxine with Capillary Electrophoretic Enzyme Immunoassay

Capillary electrophoretic immunoassay (CEIA) is a new analytical technique1,2. In CEIA, the detection methods were UV absorbance detection1 and laser induced fluorescence detection (LIF)2. However, The UV detection is lack of sensitivity. The LIF is difficult to use due to its high cost, and furthermore, most biological fluids are strongly luminescent when excited by the laser in the blue or green region of the spectrum. In our present work, a capillary electrophoretic enzyme immuno…     

磁性微粒子化学发光免疫分析法测定人血清中雌三醇

利用化学发光免疫分析(chemiluminescence immunoassay, CLIA)高灵敏度和高特异性的特点, 将磁性微粒子应用于化学发光免疫分析中, 用两种不同的方法对人体血清内的雌三醇(E3)含量进行了测定. 磁性微粒子分别作为固相一抗包被材料和二抗分离剂参与反应. 两种方法检测雌三醇浓度的线形范围均为0.6～60 ng/mL. 其中, 固相一抗法的批内变异及批间变异系数分别小于11%和15%, 回收率为90%～116%, 健全性系数为0.9987. 二抗分离法的批内变异及批间变异系数分别小于8%和10%, 回收率为88%～118%, 健全性系数为0.9974. 两种方法分别与经典板式化学发光法对比, 检测人血清样本, 结果相关性较好, 且磁性微粒子法更为省时、简便, 适于推广应用.     

A New Immunoassay Method by Capillary Electrophoresis with Enhanced Chemiluminescence Detection

Immunoassay based on capillary electrophoresis has recently been paid a great attention due to its excellent separation power, high analysis speed, small sample volume requirements, and automation 1,2. Since the injection volume is too small, immunoassay by CE needs an extremely sensitive detector. Laser-induced fluorescence3 and electro-chemical detections 4 have been used for this purpose. In fact chemilumi- nescence (CL) is also a highly sensitive method for detection, and is widely used …     

Capillary Electrophoretic Immunoassay with Laser-induced Fluorescence Detection for Interferon-gamma

Capillary electrophoretic immunoassay with laser-induced fluorescence detection for recombinant human interferon-gamma (IFN-γ) was established. The limits of detection for three forms of IFN-γ are 6.9ng/L, 5.7ng/L and 5.0ng/L, respectively.     

毛细管电泳分离-激光诱导荧光检测生物胺

采用新合成的6-氧-[(1-琥珀酰亚胺)氧酰甲基]-荧光素乙酯(SOFE)作为柱前衍生试剂,毛细管电泳分离-激光诱导荧光检测了乙醇胺(EOA)、组胺(His)、甲胺(MA)、乙胺(EA)、酪胺(TYR)及苯乙胺(PEA)6种生物胺。在硼酸-硼砂缓冲溶液(pH8.5)中,室温(25℃)下衍生10min。用pH8.5的含25mmol/LSDS15%(V/V)乙腈的40mmol/L硼酸盐溶液作为电泳缓冲溶液,6种衍生物在15min内完全分离,检出限在2.5×10-11～8×10-11mol/L之间。该方法应用于酱油中生物胺的测定,结果令人满意。     

Production of Polyclonal Antibody of Morphine and Determination of Morphine in Urine by Capillary Electrophoresis Immunoassay with Laser-induced Fluorescence Detection

N-Conjugated antigen was synthesized and polyclonal antibody with high specificity was obtained from immunizing animals. With this polyclonal antibody, a rapid and efficient CEIA-LIF method was developed to determine the free morphine in urine of abusers. The detection limit was calculated to be 40 ng/mL. Simulated urine samples were analyzed with good recoveries, which showed the feasibility of its application in specific morphine determination in urine of morphine abusers.