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电化学免疫分析法研究进展 总被引:27,自引:8,他引:27
电化学免疫分析法是将免疫分析与电化学分析技术相结合的一种免疫分析新方法,近十多年来,电化免疫分析的研究有了迅速的发展。本文对电化学的免疫分析法的标记物、免疫方法、电化学检测技术进行了概括总结,并展望了电化学免疫分析的发展前景。 相似文献
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多色免疫组织化学(Multiplex immunohistochemistry, mIHC)技术是一种新型多靶点病理组织染色、成像及分析技术。该技术通过在单张组织切片上检测多种生物标志物的表达水平及空间分布,实现对细胞的表型、组成、形态及细胞间相互作用机理的全面解析。近年来,mIHC技术被成功应用于肿瘤免疫研究领域,为肿瘤的诊断和治疗开辟了新的途径。本文从近年开发的mIHC检测技术出发,针对不同类型mIHC技术的检测原理及其特点进行了详细阐述,重点讨论了新型mIHC检测技术在肿瘤标志物及肿瘤微环境检测等领域中的应用,并对mIHC在肿瘤免疫诊断和治疗领域的应用前景和发展趋势进行了展望。 相似文献
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纳米材料因其具有独特的性质,广泛应用于发展具有超高灵敏度、超高选择性的电化学免疫分析方法.纳米材料的免疫标记技术是免疫分析方面研究的一个重要领域,对于提高分析方法的灵敏度与准确性至关重要.本文总结了近年来国内外纳米标记物在电化学免疫分析技术中的应用和进展情况,并对该领域的发展前景做出了展望. 相似文献
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本文评述了近5年国内外化学发光免疫分析技术的理论研究成果及应用进展,分别从基因工程试剂的应用、新标记物与标记技术、新固相材料、新联用检测技术和微型化、自动化检测仪器等方面进行阐述,并对该技术的发展进行了展望,引用文献162篇. 相似文献
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叙述了化学发光免疫分析的分类及特点,从发光底物、增强剂、过氧化物酶、过氧化物及其他方面,对鲁米诺类化合物化学发光酶免疫分析的进展进行了综述,引用文献34篇。 相似文献
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用红细胞代替辣根过氧化物酶作为双抗体夹心免疫分析中第二抗体的标记物, 建立了一种红细胞标记抗体的免疫化学发光测定乙型肝炎病毒表面抗原的新方法. 在免疫反应完成后, 结合了抗原-抗体免疫复合物的致敏红细胞在低渗溶液中溶血, 释放出血红蛋白. 基于血红蛋白对鲁米诺-H2O2体系化学发光具有催化作用的原理, 采用化学发光法测定血红蛋白含量. 测得的血红蛋白发光强度与待测抗原浓度呈线性关系. 采用这种方法可检测出0.5 ng/mL的乙型肝炎病毒表面抗原. 将该方法与酶联免疫吸附分析(ELISA)结合起来对乙型肝炎患者血清乙肝病毒表面抗原(HBsAg)进行检测, 两者符合率均为97%, 表明本法具有良好的灵敏度和特异性, 可用于临床标本测试. 相似文献
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免疫分析是临床上检测生理相关蛋白质指标的主要方法. 与单一指标的免疫分析相比, 临床体外诊断对多指标的生理相关蛋白质免疫分析有着更为广泛的需求. 通过在固相载体上完成免疫反应的非均相免疫分析具有灵敏度高的优点, 是当前多指标免疫分析的主流方法. 本文按照固相载体的不同, 对近年来的多指标免疫分析系统分别从技术原理、 实现方法、 各自特点等方面的研究进展进行综合阐述. 最后对比总结了不同系统的优势与不足, 并展望了微流控多指标免疫分析在即时检测领域的发展前景. 相似文献
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微流控芯片免疫分析方法研究进展 总被引:2,自引:0,他引:2
综述了微流控芯片免疫分析方法研究新进展。对有关芯片进行了初步分类,并评述了各类芯片的性能与优缺点。尤为关注免疫分析微流控芯片在临床诊断、环境分析等领域的应用研究。引用文献33篇。 相似文献
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Julia Ettlinger Jörg A. Schenk Burkhard Micheel Eva Ehrentreich‐Förster Nenad Gajovic‐Eichelmann 《Electroanalysis》2012,24(7):1567-1575
A direct competitive amperometric immunoassay format for the detection of haptens and proteins was developed. The method is based on the quenching of electroactivity of ferrocenium, which is coupled to the antigen and used as the primary reporter, upon binding to a monoclonal anti‐ferrocenium antibody, which is coupled to the detection antibody and used as a secondary reporter. A separation‐free progesterone immunoassay with a lower detection limit of 1 ng mL?1 (3.18 nmol L?1) in 1 : 2 diluted blood serum was realised by combining two bifunctional conjugates, a ferrocenium‐PEG‐progesterone tracer and a bioconjugate of one anti‐progesterone and one anti‐ferrocenium antibody. The immune complex is formed within 30 s upon addition of progesterone, resulting in a total analysis time of 1.5 min. 相似文献
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增强化学发光酶免疫分析法测定血清中的铁蛋白 总被引:3,自引:0,他引:3
本文采用对碘苯酚增强的Luminol-H2O2-HRP化学发光反应体系作为免疫分析的最终检测手段,建立了一种新的铁蛋白的免疫分析方法,与酶联免疫分析法相比,该方法具有灵敏度高,线性范围宽等特点。方法的相对标准偏差3.7%,标准曲线线性范围为0.12-2000ng/ml,用该方法对血清中的铁蛋白进行了测定,其结果与ELISA法所得结果一致。 相似文献
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《Analytical letters》2012,45(11):1347-1364
The current trend of pesticide immunoassay is developing multi-analyte immunoassays, that is, more than one target can be detected per test. In this mini-review, the strategies to achieve multi-analyte immunoassays, which include multi-antibody strategy, broad-specificity antibody strategy, and others, are briefly introduced. In addition, the recent developments of multi-analyte immunoassays for pesticides were summarized. At last, we give a future outlook of this area, which includes rational design generic hapten with the assist of computer-assisted molecular modeling (CAMM), further improving the properties of broad-specificity antibody by recombinant antibody (rAb) technology and developing a noncompetitive immunoassay format. 相似文献
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《International journal of environmental analytical chemistry》2013,93(3):145-155
A dipstick assay format for atrazine analysis in vegetable samples is described. The analytical method consists in a fast extraction procedure followed by a test based on the use of Immobilon-P strips as antibody coating support. The atrazine quantification was carried out measuring the dot colour by a spectrophotometer. Thus atrazine could be detected in a concentration range 0.16-475.0 µg Lm 1 with an I50 of 2.04 µg L m1. For direct quantification of vegetable samples, those were extracted by blending 5 g in 10 mL of MeOH for 10 min followed by a vacuum filtration through 0.45 µm nylon filters. To avoid erroneous atrazine results, all samples and standards were run in 50% of MeOH which decreased the assay sensitivity by ten fold ( I50 = 21.09 µg Lm1). Therefore, the proposed methodology was able to perform atrazine analysis under established EU MRL. The samples could be measured directly without any prior concentration or clean-up steps. Recoveries (75-105%) were in agreement with those obtained by a reference method (multiresidue extraction-GC/MS quantification). The feasibility of automated immunoreagent dispenser was also demonstrated. 相似文献
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pH敏感相分离高分子的免疫分析应用研究 总被引:1,自引:0,他引:1
合成了溶解性受pH值影响的高分子化合物聚甲基丙烯酸甲酯-丙烯酸-顺丁烯二酸酐(MAM)及聚甲基丙烯酸一丙烯酰胺-N-羟基琥珀酰亚胺丙烯酸酯(MAN),分别与抗体进行了共价连接,将其用作免疫分析载体,利用其溶解性可调节特征,建立了新的免疫分析方法.以聚甲基丙烯酸-丙烯酰胺-N-羟基琥珀酰亚胺丙烯酸酯为载体,对血清中乙肝表面抗原进行了检测,阴阳性检出结果与常规ELISA方法相符. 相似文献
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《Analytical letters》2012,45(3):487-498
The suitability of enzyme-linked immunosorbent assay for rapid and on-site determination of triazophos in environmental samples was investigated. The optimized rapid ELISA can be completed in around 10 min at ambient temperature. A rapid sample preparation procedure was developed which can be performed on field site for fresh water and soil samples. The rapid assays can process 40 samples within 1 h including the sample preparation time. It can be concluded that this rapid assay would be a potential, effective method for monitoring triazophos in the environment, especially when quick Judgment regarding low or high contamination is critical. 相似文献