无骨髓灰质炎患者的放射性免疫检测和基于固定细胞的检测之间的一致性:优化诊断方法
Silvia Falso1, Sofia Marini1, Cinzia Carrozza2
1Department of Neuroscience, Università Cattolica del Sacro Cuore, Rome, Italy.
European journal of neurology
|August 9, 2024
概括
对乙胆受体抗体 (AChR-Ab) 的放射性免疫检测 (RIA) 可以在严重肌痛性肌痛症 (MG) 诊断中产生错误阳性. 一种基于固定细胞的测定 (F-CBA) 在识别致病性 AChR-Abs 中显示出更高的特异性,有助于准确的 MG 诊断.
科学领域:
- 神经学 神经学
- 免疫学 免疫学 免疫学
- 诊断检测试验 诊断检测试验
背景情况:
- 乙胆受体抗体 (AChR-Ab) 检测对于诊断肌痛性硬化症 (MG) 至关重要.
- 目前的黄金标准是放射性免疫检测 (RIA),可以检测对非致病性表位体的抗体,可能导致误诊.
- 显然,需要MG更具体的诊断工具.
研究的目的:
- 与RIA相比,评估基于固定细胞的试验 (F-CBA) 在检测致病性ACHR-Abs.检测中的特异性.
- 评估F-CBA在将MG患者与RIA阳性ACHR-Abs.的无症状个体区分开来时的实用性.
主要方法:
- 对RIA阳性ACHR-Ab结果的患者的医疗记录的回顾性审查.
- 根据临床检查,电生理学和抗体检测来诊断MG.
- 使用F-CBA.重新检测来自RIA阳性无症状患者的血清样本.
主要成果:
- 在605名RIA-AChR-Ab阳性患者中,599人被诊断出患有MG.
- 六名受试者是RIA-AChR-Ab阳性,但没有MG的症状.
- 其中四名无症状患者的F-CBA没有检测到AChR-Abs;两名 (非MG胸腺瘤) 通过F-CBA保持阳性.
结论:
- 对于AChR-Ab的RIA错误阳性是罕见的,但可能发生.
- 基于固定细胞的测定 (F-CBA) 表明在诊断MG时,其特异性可能比RIA更高.
- 通过更精确地识别致病性AChR-Abs,F-CBA可能会提高诊断准确性.
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