• Combined effect of high factor VIII levels and high mean platelet volume on the risk of future incident venous thromboembolism 

      Hansen, Ellen-Sofie; Edvardsen, Magnus; Aukrust, Pål; Ueland, Thor; Hansen, John Bjarne; Brækkan, Sigrid Kufaas; Morelli, Vania Maris (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-29)
      Background - High factor VIII (FVIII) levels and large platelets, as reflected by a high mean platelet volume (MPV), are separately associated with increased risk of venous thromboembolism (VTE). Whether the combination of high FVIII levels and large platelets has a supra-additive effect on VTE risk is unknown.<p> <p>Objectives - We aimed to investigate the joint effect of high FVIII levels and ...
    • Combined effects of plasma von Willebrand factor and platelet measures on the risk of incident venous thromboembolism 

      Edvardsen, Magnus; Hansen, Ellen-Sofie; Hindberg, Kristian; Morelli, Vania Maris; Ueland, Thor; Aukrust, Pål; Brækkan, Sigrid Kufaas; Holtet Evensen, Line; Hansen, John Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-23)
      Plasma von Willebrand factor (VWF) and platelet reactivity are risk factors for venous thromboembolism (VTE), and VWF can promote hemostasis by interaction with platelets. In this study, we explored the combined effects of plasma VWF and platelet measures on the risk of incident VTE. A population-based nested case-control study with 403 cases and 816 controls was derived from the Tromsø Study. VWF, ...
    • Elevated plasma D-dimer levels are associated with risk of future incident venous thromboembolism 

      Hansen, Ellen-Sofie; Rinde, Fridtjof Balteskard; Edvardsen, Magnus; Hindberg, Kristian; Latysheva, Nadezhda; Aukrust, Pål; Ueland, Thor; Michelsen, Annika Elisabet; Hansen, John Bjarne; Brækkan, Sigrid Kufaas; Morelli, Vania Maris (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-25)
      <p><i>Background</i> D-dimer, a global biomarker for activation of the coagulation and fibrinolysis systems, is useful in assessing individual risk of venous thromboembolism (VTE) recurrence. However, there is limited information on the association between D-dimer and risk of a first lifetime VTE event. <p><i>Objectives</i> To investigate the association between plasma D-dimer levels and risk of ...
    • Impact of the von Willebrand factor-ADAMTS-13 axis on the risk of future venous thromboembolism 

      Edvardsen, Magnus; Hansen, Ellen-Sofie; Ueland, Thor; Aukrust, Pål; Brækkan, Sigrid Kufaas; Morelli, Vania Maris; Hansen, John Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-01)
      Background - von Willebrand factor (VWF) and its cleaving protease, ADAMTS-13, form a pivotal axis that regulates hemostasis. However, the role of the VWF-ADAMTS-13 axis in the risk of future venous thromboembolism (VTE) is unknown.<p> <p>Objectives - To investigate whether plasma ADAMTS-13 levels and an imbalance with VWF levels, assessed as the VWF/ADAMTS-13 ratio, are associated with the risk ...
    • Plasma levels of growth differentiation factor 15 are associated with future risk of venous thromboembolism 

      Hansen, Ellen-Sofie; Hindberg, Kristian; Latysheva, Nadezhda; Aukrust, Pål; Ueland, Thor; Hansen, John-Bjarne; Brækkan, Sigrid Kufaas; Morelli, Vania Maris (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-15)
      Growth differentiation factor 15 (GDF-15), a marker of inflammation and oxidative stress, has emerged as a biomarker for arterial cardiovascular disease. However, the association between GDF-15 and venous thromboembolism (VTE) remains uncertain. We therefore investigated the association between plasma GDF-15 levels and future risk of incident VTE and explored the potential of a causal association ...
    • Plasma levels of von Willebrand factor and future risk of incident venous thromboembolism 

      Edvardsen, Magnus; Hindberg, Kristian; Hansen, Ellen-Sofie; Morelli, Vania Maris; Ueland, Thor; Aukrust, Pål; Brækkan, Sigrid Kufaas; Holtet Evensen, Line; Hansen, John-Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-07)
      Several case-control studies have reported elevated plasma von Willebrand factor (VWF) levels in patients with venous thromboembolism (VTE) compared with controls. However, because few studies have investigated the association in a prospective design, it is unclear whether elevated plasma VWF is a risk factor or a consequence of the VTE event. Therefore, we aimed to investigate the prospective ...