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Multiple qualitative and quantitative methods for free light chain analysis are necessary as first line tests for AL amyloidosis

机译:对于AL淀粉样变性的一线测试,必须使用多种定性和定量方法进行自由轻链分析

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摘要

The objective of this study was to demonstrate the necessity of using different methods for amyloidogenic light chain detection. Serum and urine agarose gel electrophoresis and immunofixation, as well as serum free light chain (FLC) immunoassay measurements, were evaluated in a patient with verified multiple myeloma and consequent AL amyloidosis confirmed by Congo red staining and immunofluorescence techniques. Conventional chemistry tests [serum and urine electrophoresis (SPE and UPE); serum and urine immunofixation (SIFE and UIFE)] were inconclusive. Only quantitative FLC immunoassay (serum free light chain immunoanalysis, SFLC) provided correct diagnostic information. A combination of gel-based SIFE and UIFE with more novel quantitative FLC immunoassays appears necessary when searching for monoclonal immunoglobulin light chain-related diseases.
机译:这项研究的目的是证明使用不同方法检测淀粉样蛋白的轻链的必要性。在经证实的多发性骨髓瘤并通过刚果红染色和免疫荧光技术证实的AL淀粉样变性的患者中,评估了血清和尿液琼脂糖凝胶电泳和免疫固定以及无血清轻链(FLC)免疫测定结果。常规化学测试[血清和尿液电泳(SPE和UPE);血清和尿液免疫固定(SIFE和UIFE)尚无定论。仅定量FLC免疫测定(无血清轻链免疫分析,SFLC)提供正确的诊断信息。当寻找单克隆免疫球蛋白轻链相关疾病时,将基于凝胶的SIFE和UIFE与更新颖的定量FLC免疫分析相结合显得很有必要。

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