实用医学杂志 ›› 2025, Vol. 41 ›› Issue (18): 2828-2838.doi: 10.3969/j.issn.1006-5725.2025.18.007

• 临床新进展 • 上一篇    

凝血收敛模型下肝素和疫苗诱导血小板减少症的发病机制与临床特征

周洋,谢旻()   

  1. 北京大学第一医院重症医学科 (北京 100034 )
  • 收稿日期:2025-04-16 出版日期:2025-09-20 发布日期:2025-09-25
  • 通讯作者: 谢旻 E-mail:xiemin0913@163.com
  • 作者简介:谢旻,医学博士,副主任医师,北京大学第一医院重症医学科副主任,北京大学重症医学系秘书,中国人体健康科技促进会重症与器官支持专业委员会委员,北京生理科学会危重症专业委员会委员,北京整合医学会重症医学分会委员。著有SCI、核心期刊10余篇,参与2部专业书籍编著工作。主要研究方向:危重病人围术期并发症、脓毒症的诊疗。E-mail:xiemin0913@163.com
  • 基金资助:
    国家临床重点专科建设项目(2023-141)

Accurate diagnosis and treatment of HIT and VITT under coagulopathy convergence model and clinical pathway transformation

Yang ZHOU,Min XIE()   

  1. Department of Critical Care Medicine,Peking University First Hospital,Beijing 100034,Beijing,China?
  • Received:2025-04-16 Online:2025-09-20 Published:2025-09-25
  • Contact: Min XIE E-mail:xiemin0913@163.com

摘要:

凝血收敛模型整合凝血、炎症与先天免疫的交互作用,为解析肝素诱导血小板减少症(heparin-induced thrombocytopenia, HIT)和疫苗诱导免疫性血栓性血小板减少症(vaccine-induced immune thrombotic thrombocytopenia, VITT)的复杂病理生理及指导其差异化诊疗提供了新视角。本文系统对比了两者在模型下的核心病生差异:二者虽共享血小板因子4(platelet factor 4, PF4)依赖性血栓形成通路,但在抗体特性及免疫放大效应上存在显著差异。HIT与VITT的诊断优化新进展:HIT的快速诊断框架TORADI-HIT与VITT的中性粒细胞胞外陷阱(neutrophil extracellular traps, NETs)标志物检测的诊断实用性。针对难治性与重症病例,在常规治疗与免疫优化治疗以外,基于模型引入靶向治疗策略成为研究热点,包括抑制NETs形成(NETs formation, NETosis)通路、阻断补体级联及干预FcγRⅡa信号等,其临床应用前景值得关注,NETs降解产物、补体活化片段等监测亦助于治疗调整与预后管理。本综述构建并图示了HIT与VITT“诊断-治疗-监测”整合临床路径,旨在为临床实践提供标准化管理工具,该模型揭示的损伤相关分子模式(damage-associated molecular patterns, DAMPs)-NETs-免疫血栓轴,亦为理解并分层精准干预此类复杂免疫性血栓疾病提供了关键方向。

关键词: 凝血收敛模型, 肝素诱导的血小板减少症, 疫苗诱导的免疫性血栓性血小板减少症, 中性粒细胞胞胞外陷阱, 诊断优化, 靶向治疗, 临床路径

Abstract:

The coagulopathy convergence model, by integrating the complex interplay among coagulation, inflammation, and innate immunity, offers novel insights into the intricate pathophysiology of heparin-induced thrombocytopenia (HIT) and vaccine-induced immune thrombotic thrombocytopenia (VITT), thereby facilitating their differential diagnosis and clinical management. This review systematically outlines the core pathophysiological differences between these two conditions within the framework of the model. Although both disorders involve a platelet factor 4 (PF4)-dependent thrombotic pathway, they demonstrate notable differences in antibody profiles and mechanisms of immune amplification. Recent advances in diagnosis include the rapid diagnostic algorithm TORADI-HIT for HIT and the emerging clinical utility of neutrophil extracellular traps (NETs) as biomarkers for VITT. For refractory and severe cases, in addition to conventional anticoagulant and immunomodulatory therapies, model-guided targeted therapeutic strategies have become a focal point of research, including inhibition of NET formation (NETosis), blockade of the complement cascade, and modulation of FcγRⅡa signaling. The translational potential of these strategies merits further investigation. Moreover, monitoring NET degradation products and complement activation fragments may aid in optimizing treatment and stratifying prognoses. This review proposes and visually illustrates an integrated "diagnosis-treatment-monitoring" clinical pathway for HIT and VITT, providing a standardized approach for clinical application. The model highlights a key damage-associated molecular patterns (DAMPs)-NETs-immunothrombosis axis, which serves as a crucial framework for understanding and implementing stratified, precision-based interventions in these complex immune-mediated thrombotic disorders.

Key words: convergent coagulation model, heparin-induced thrombocytopenia, vaccine-induced immune thrombotic thrombocytopenia, neutrophil extracellular traps, diagnostic optimization, targeted therapy, clinical pathway?

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