Crit Care:蛋白C作为成人脓毒症的生物标志物

2022-01-20 MedSci原创 MedSci原创

与非幸存者和脓毒症患者相比,脓毒症幸存者的蛋白C水平显著高于DIC患者。未来的研究需要确定蛋白C的敏感性和特异性,以确定其作为早期脓毒症识别生物标志物的临床意义。

脓毒症是宿主对感染的失调反应,会引发宿主异常的促凝血和促炎反应。早期疾病干预的局限性突出了对有效诊断和预后生物标志物的需求。蛋白C作为抗凝剂和抗炎分子使其成为脓毒症生物标志物。

近日,危重病医学领域权威杂志Critical Care上发表了一篇研究文章,这项荟萃分析旨在评估蛋白C作为成人脓毒症生物标志物的诊断和预后价值。

研究人员检索了MEDLINE、PubMed、EMBASE、CINAHL和Cochrane图书馆,检索时间从数据库成立到2021年9月12日。研究人员纳入了(1)患有败血症或疑似败血症的成年患者(>17岁);(2)在进入研究24小时内测量了蛋白C水平;(3)将蛋白C作为诊断或预后生物标志物的的前瞻性观察研究。两位作者使用预后研究质量(QUIPS)和诊断研究质量评估-2(QUADAS-2)工具筛选文献并进行偏倚风险(RoB)评估。如果有足够的数据可用,则进行荟萃分析以估计患者群体之间的标准化平均差(SMD)。

该荟萃分析纳入了12项研究,并汇总了8项研究进行荟萃分析。汇总分析表明,与非幸存者相比,脓毒症幸存者的蛋白C水平降低程度较低(6项研究,741名患者,SMD=0.52,95%CI为0.24-0.81,p=0.0003,I2=55%)。与伴有弥散性血管内凝血(DIC)的患者相比,没有DIC的脓毒症患者蛋白C水平降低较少的证据质量较低(3项研究,644名患者,SMD=0.97,95%CI为0.62-1.32,p<0.00001,I2=67%)。由于研究之间的对照人群异质,蛋白C无法作为诊断工具进行评估。

该荟萃分析表明,与非幸存者和脓毒症患者相比,脓毒症幸存者的蛋白C水平显著高于DIC患者。未来的研究需要确定蛋白C的敏感性和特异性,以确定其作为早期脓毒症识别生物标志物的临床意义。

原始出处:

Vanessa Catenacci,et al.The prognostic utility of protein C as a biomarker for adult sepsis: a systematic review and meta-analysis.Critical Care.2022.https://ccforum.biomedcentral.com/articles/10.1186/s13054-022-03889-2

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