Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Dynamic Measurement of Plasma von Willebrand Factor and ADAMTS13 Predicts Mortality in Hospitalized Patients with SARS-CoV2 Infection

Version 1 : Received: 22 August 2023 / Approved: 24 August 2023 / Online: 25 August 2023 (08:31:29 CEST)

A peer-reviewed article of this Preprint also exists.

Zhang, Q.; Bignotti, A.; Yada, N.; Ye, Z.; Liu, S.; Han, Z.; Zheng, X.L. Dynamic Assessment of Plasma von Willebrand Factor and ADAMTS13 Predicts Mortality in Hospitalized Patients with SARS-CoV-2 Infection. J. Clin. Med. 2023, 12, 7174. Zhang, Q.; Bignotti, A.; Yada, N.; Ye, Z.; Liu, S.; Han, Z.; Zheng, X.L. Dynamic Assessment of Plasma von Willebrand Factor and ADAMTS13 Predicts Mortality in Hospitalized Patients with SARS-CoV-2 Infection. J. Clin. Med. 2023, 12, 7174.

Abstract

Background: Plasma levels of von Willebrand factor (VWF) are significantly elevated in patients with COVID-19. However, the dynamic changes and prognostic value of this biomarker in hospitalized patients with COVID-19 are not determined. Methods: 124 patients infected with SARS-CoV2 were prospectively recruited for the study. Serial blood samples were obtained at the time of admission (D1), 3-4 days following standard of care treatments (D2), and 1-2 days prior to discharge or death (D3). Plasma VWF antigen, ADAMTS13 antigen and activity, as well as the ratio of VWF/ADAMTS13 were determined, followed by statistical analyses. Results:While admission plasma levels of VWF in COVID-19 patients were significantly elevated, no statistical significance was detected among patients of different disease severity. Plasma ADAMTS13 activity, but not its antigen levels, were significantly lower in patients with severe or critical COVID-19 compared with other groups. Interestingly, the ratios of plasma VWF antigen to ADAMTS13 antigen were significantly higher in patients with severe or critical COVID-19 than in those with mild to moderate disease. More importantly, plasma levels of VWF and VWF/ADAMTS13 ratios were persistently elevated in patients with COVID-19 during hospitalization. Kaplan-Meier and Cox proportional hazard regression analysis revealed that an increased plasma VWF or ratio of VWF/ADAMTS13 at D2 and D3 associated with an increased mortality rate. Conclusions: Persistent endotheliopathy, marked by an elevated level of plasma VWF or an increased VWF/ADAMTS13 ratio, is present in all hospitalized patients following SARS-CoV2 infection and strongly associated with mortality.

Keywords

SARS-CoV2; endothelium; ADAMTS13: von Willebrand factor; mortality

Subject

Biology and Life Sciences, Life Sciences

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