败血症分子内型的预后评估:巴西的一项多中心队列研究
Fernanda do Carmo De Stefani1, Ana Carolina de Miranda2, Bruna Cassia Dal Vesco1
1Post-graduation program, Federal University of Parana, Parana, Brazil.
Shock (Augusta, Ga.)
|July 24, 2025
概括
火星1分子内型表明低资源环境中的败血症存活率更差. 火星2显示出作为败血症诊断标记物的潜力.
科学领域:
- 分子生物学分子生物学
- 关键护理医学 关键护理医学
- 传染病 传染病 传染病
背景情况:
- 败血症呈现异质的临床和分子特征,使风险分层复杂化.
- 高收入国家和低至中等收入国家 (LMICs) 之间存在败血症结局的差异.
研究的目的:
- 为了评估四个分子内型 (Mars1-Mars4) 在巴西败血症队列的预后价值.
- 评估这些内型的诊断准确性.
主要方法:
- 在巴西ICU进行前性,多中心的观察性研究.
- 在24小时内根据败血症-3标准进行败血症诊断.
- 定量实时PCR (qRT-PCR) 用于根据八个基因转录来确定火星内型.
- 主要终点:28天死亡率.
主要成果:
- 纳入了168名败血症患者和25名对照人群;整体死亡率为44%.
- 火星1内型与显著更高的28天死亡率 (HR 1.78,P=0.017) 和较差的生存概率 (P=0.013) 相关.
- 接收器运行特征 (ROC) 曲线分析显示了败血症诊断的AUC:Mars1 (0.69),Mars2 (0.89),Mars3 (0.82) 和Mars4 (0.71).
结论:
- 通过qRT-PCR识别的Mars1分子内型,预测LMIC中败血症存活率更差.
- 火星2内型表明了作为败血症诊断生物标志物的潜力.
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