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  • Impaired exercise capacity in post-COVID-19 syndrome: the role of VWF-ADAMTS13 axis #MMPMID35543533
  • Prasannan N; Heightman M; Hillman T; Wall E; Bell R; Kessler A; Neave L; Doyle A; Devaraj A; Singh D; Dehbi HM; Scully M
  • Blood Adv 2022[Jul]; 6 (13): 4041-4048 PMID35543533show ga
  • Post-COVID syndrome (PCS), or long COVID, is an increasingly recognized complication of acute SARS-CoV-2 infection, characterized by persistent fatigue, reduced exercise tolerance, chest pain, shortness of breath, and cognitive slowing. Acute COVID-19 is strongly linked with an increased risk of thrombosis, which is a prothrombotic state quantified by an elevated von Willebrand factor (VWF) antigen (Ag)/ADAMTS13 ratio that is associated with severity of acute COVID-19 infection. We investigated whether patients with PCS also had evidence of a prothrombotic state associated with symptom severity. In a large cohort of patients referred to a dedicated post-COVID-19 clinic, thrombotic risk, including VWF(Ag)/ADAMTS13 ratio, was investigated. An elevated VWF(Ag)/ADAMTS13 ratio (>/=1.5) was present in nearly one-third of the cohort and was 4 times more likely to be present in patients with impaired exercise capacity, as evidenced by desaturation >/=3% and/or an increase in lactate level >1 from baseline on a 1-minute sit-to-stand test and/or a 6-minute walk test (P < .0001). Of 276 patients, 56 (20%) had impaired exercise capacity, of which 55% (31/56) had a VWF(Ag)/ADAMTS13 ratio >/=1.5 (P < .0001). Factor VIII and VWF(Ag) were elevated in 26% and 18%, respectively, and support a hypercoagulable state in some patients with PCS. These findings suggest possible ongoing microvascular/endothelial dysfunction in the pathogenesis of PCS and suggest a role for antithrombotic therapy in the treatment of these patients.
  • |*COVID-19/complications[MESH]
  • |*Thrombosis[MESH]
  • |ADAM Proteins[MESH]
  • |ADAMTS13 Protein[MESH]
  • |Exercise Tolerance[MESH]
  • |Humans[MESH]
  • |Post-Acute COVID-19 Syndrome[MESH]
  • |SARS-CoV-2[MESH]
  • |von Willebrand Factor[MESH]

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  • suck abstract from ncbi

    4041 13.6 2022