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用于检测人血清中免疫复合物、IgG聚集体和细菌产物的C1q偏离试验。

C1q deviation test for the detection of immune complexes, aggregates of IgG, and bacterial products in human serum.

作者信息

Sobel A T, Bokisch V A, Müller-Eberhard H J

出版信息

J Exp Med. 1975 Jul 1;142(1):139-50. doi: 10.1084/jem.142.1.139.

Abstract

This report describes a new, rapid, sensitive, and quantitative method for the detection of immune complexes, endotoxins, and other complement activating materials in patients sera utilizing the ability of these substances to react with isolated C1q. The procedure is based on the inhibition of radiolabeled C1q binding to sensitized sheep erythrocytes by C1q-reactive substances in pathological sera. The C1q deviation test may be performed on 50 mu1 of serum, using 1 mug of radiolabeled C1q per sample. The procedure may be completed in 1.5-2 h, it is capable of detecting 5 mug of aggregated human IgG per ml of serum, and its coefficient of variation is 4.2%. Application of the test to the study of 193 sera from 43 patients with Dengue hemorrhagic fever showed a positive correlation between degree of C1q deviation and severity of disease.

摘要

本报告描述了一种新的、快速、灵敏且定量的方法,用于检测患者血清中的免疫复合物、内毒素及其他补体激活物质,该方法利用这些物质与分离的C1q发生反应的能力。该程序基于病理血清中C1q反应性物质对放射性标记的C1q与致敏绵羊红细胞结合的抑制作用。C1q偏差试验可在50μl血清上进行,每个样品使用1μg放射性标记的C1q。该程序可在1.5 - 2小时内完成,能够检测每毫升血清中5μg聚集的人IgG,其变异系数为4.2%。将该试验应用于对43例登革出血热患者的193份血清的研究,结果显示C1q偏差程度与疾病严重程度呈正相关。

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本文引用的文献

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Two types of gamma-globulin differing in carbohydrate content.两种碳水化合物含量不同的γ球蛋白。
Proc Soc Exp Biol Med. 1956 Oct;93(1):146-50. doi: 10.3181/00379727-93-22690.
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C1q protein of human complement.人类补体C1q蛋白
Biochemistry. 1972 Aug 29;11(18):3443-50. doi: 10.1021/bi00768a018.

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