期刊
ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY
卷 41, 期 2, 页码 878-882出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1161/ATVBAHA.120.315547
关键词
coronavirus; COVID-19; extracellular vesicles; fibrinogen; thrombosis
资金
- National Institutes of Health [R01 HL119523]
- University of North Carolina at Chapel Hill School of Medicine
- NCTraCS ECBR pilot grant
- Region Stockholm
- Knut & Alice Wallenberg foundation
The study found that COVID-19 patients have significantly higher levels of circulating EV TF activity compared to healthy controls. This increased activity was associated with disease severity, mortality, and markers like D-dimer, indicating a potential role of EV TF in driving thrombosis in COVID-19 patients.
Objective: Patients with coronavirus disease 2019 (COVID-19) have a high rate of thrombosis. We hypothesized that severe acute respiratory syndrome coronavirus 2 infection leads to induction of TF (tissue factor) expression and increased levels of circulating TF-positive extracellular vesicles (EV) that may drive thrombosis. Approach and Results: We measured levels of plasma EV TF activity in 100 patients with COVID-19 with moderate and severe disease and 28 healthy controls. Levels of EV TF activity were significantly higher in patients with COVID-19 compared with controls. In addition, levels of EV TF activity were associated with disease severity and mortality. Finally, levels of EV TF activity correlated with several plasma markers, including D-dimer, which has been shown to be associated with thrombosis in patients with COVID-19. Conclusions: Our results indicate that severe acute respiratory syndrome coronavirus 2 infection induces the release of TF-positive EVs into the circulation that are likely to contribute to thrombosis in patients with COVID-19. EV TF activity was also associated with severity and mortality.
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