一种基于免疫沉的新型向液体染色学-并联质谱分析,用于精确确定人血清中可佩的含量
Danni Mu1, Xiaoli Ma1, Yichen Ma1
1Department of Laboratory Medicine, 34732 Peking Union Medical College Hospital , Peking Union Medical College and Chinese Academy of Medical Science, Beijing, 100730, China.
Clinical chemistry and laboratory medicine
|July 9, 2025
概括
一种新的液体染色学-并联质谱法 (LC-MS/MS) 方法准确量化了素,这是多尿多综合征的关键标志物. 这种验证的测定方法比传统方法提供了更高的精度和更广泛的线性范围.
科学领域:
- 生物化学 生物化学
- 分析化学 分析化学
- 临床诊断 临床诊断 临床诊断
背景情况:
- 素是一种稳定的阿尔金因压素 (AVP) 替代标记物,对于诊断多尿多综合征至关重要.
- 对于可佩的常规免疫检测方法缺乏可比性,并存在局限性.
- 需要一种更准确,更可靠的方法来量化可佩.
研究的目的:
- 建立和验证一种向液体染色学-并联质谱法 (LC-MS/MS) 方法,用于量化人类血清中的素.
- 评估LC-MS/MS方法的分析性能.
- 为了将LC-MS/MS方法与现有的免疫光试验进行比较.
主要方法:
- 血清可佩因是使用免疫沉分离的.
- 进行了素消化,随后进行了离子交换固体相提取.
- 使用向液体染色学-并联质谱法 (LC-MS/MS) 实现了量化.
主要成果:
- 该LC-MS/MS方法显示了高精度 (在运行内5.2-12.1%,总8.1-13.5%) 和线性 (5-1,000 pg/mL).
- 该试验具有较低的检测极限 (2.5 pg/mL),良好的恢复 (95.2-103.1%),以及最小的矩阵效应.
- 结果显示与免疫光定量 (r=0.926,斜率=0.989) 有很强的一致性,建立了3.66-58.25 pg/mL的参考间隔.
结论:
- 开发的向LC-MS/MS方法对于血清可佩定量是准确可靠的.
- 这种方法提供了令人满意的精度,广泛的线性范围和低检测极限.
- 需要进一步的临床研究来评估这种LC-MS/MS方法的诊断准确性.
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