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通过蛋白质学洞察力诊断败血症:来自潜在的ICU队列的发现
medRxiv : the preprint server for health sciences
|September 5, 2025
概括
使用蛋白质组学数据的机器学习模型确定了毒症诊断的关键临床变量. 这种侧重于标志物和CCL3的方法为改善败血症识别和风险评估提供了有希望的工具.
科学领域:
- 蛋白质组学和机器学习在重症监护医学中
- 对毒症诊断的生物标志物发现
- 临床信息学和电子健康记录
背景情况:
- 败血症诊断目前是临床和异质的,导致及时和准确的识别具有挑战性.
- 现有的诊断工具可能无法完全理解败血症病理学的复杂性.
- 需要优化,易于使用的临床变量来帮助毒症诊断.
研究的目的:
- 开发一种基于蛋白质学的机器学习方法来诊断败血症.
- 为检测败血症确定一组最小的,优化的临床变量.
- 评估这种方法是否可以补充或优于SOFA等现有评分系统.
主要方法:
- 在学术ICU进行前性观察研究.
- 使用LC-MS (diaPASEF) 和DIA-NN软件进行血蛋白质组学分析.
- 随机森林模型训练用于将蛋白质组数据与临床变量联系起来;用于变量选择的递归特征消除 (RFE).
主要成果:
- 在败血症和非败血症患者中发现了12种不同表达的血蛋白.
- 一个分类器使用选定的临床变量实现了0. 73 (发现) 和0. 76 (验证) 的AUC.
- 一组最小的三种特征 (BUN,CCL3,肌) 显示出强大的预测性能,肌与蛋白质组数据有很强的相关性 (R2 = 0. 558).
结论:
- 一组简短的临床变量,包括脏标志物和CCL3,可以捕捉毒症歧视的蛋白质信号.
- 这种"以蛋白质学为基础,以临床为先"的策略支持实用性EHR部署,以改善败血症的识别.
- 功能障碍似乎对败血症有显著的影响,这表明对标志物的重视可能会提高诊断和风险评估.
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