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Investigating von Willebrand Factor Pathophysiology Using a Flow Chamber Model of von Willebrand Factor-platelet String Formation
Published on: August 14, 2017
Von Willebrand Factor and ADAMTS13 and long-term outcomes in patients undergoing percutaneous coronary intervention
Maximilian Tscharre1, Ioannis Tentzeris2, Birgit Vogel2
13rd Medical Department, Cardiology and Intensive Care Medicine, Wilhelminenhospital, Vienna, Austria; Institute of Cardiometabolic Diseases, Karl Landsteiner Society, St. Pölten, Austria.
Insights
Von Willebrand factor (VWF) is linked to major adverse cardiovascular events and death in acute coronary syndrome patients after PCI. ADAMTS13 did not show predictive value in this patient group.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Thrombosis Research
Background:
- Von Willebrand factor (VWF) and ADAMTS13 are key in thrombosis and atherosclerosis.
- Their role in major adverse cardiovascular outcomes (MACE) post-percutaneous coronary intervention (PCI) requires investigation.
Purpose of the Study:
- To assess the impact of VWF, ADAMTS13, and their ratio on long-term MACE in patients undergoing PCI.
- To determine the predictive value of VWF and ADAMTS13 for mortality in this cohort.
Main Methods:
- Analysis of 701 patients undergoing PCI (2003-2006).
- Measurement of pre-PCI VWF and ADAMTS13 antigen levels.
- Primary endpoint: MACE (all-cause mortality, myocardial infarction, ischemic stroke) over 8 years.
- Secondary endpoint: All-cause mortality.
Main Results:
- In patients with acute coronary syndrome (ACS), VWF levels significantly predicted MACE (HR 1.402) and all-cause death (HR 1.841).
- ADAMTS13 and VWF/ADAMTS13 ratio showed no predictive value for MACE or mortality in ACS patients.
- Neither VWF, ADAMTS13, nor their ratio correlated with MACE or mortality in patients with stable coronary artery disease (SCAD).
Conclusions:
- VWF is a significant predictor of MACE and mortality in ACS patients post-PCI.
- ADAMTS13 and the VWF/ADAMTS13 ratio do not appear to be useful markers for risk stratification in this population.
- VWF emerges as a crucial risk marker specifically for patients with ACS undergoing PCI.
Background:
Von Willebrand factor (VWF) and its cleaving protease a disintegrin-like and metalloprotease with thrombospondin type I repeats 13 (ADAMTS13) are pivotal mediators of thrombosis and are associated with the progression of atherosclerosis. We investigated the impact of VWF, ADAMTS13 and VWF/ADAMTS13 on long-term major adverse cardiovascular outcomes (MACE) in patients undergoing percutaneous coronary intervention (PCI).
Methods:
We analysed 701 patients undergoing PCI between 2003 and 2006. VWF and ADAMTS13 antigen levels were measured before PCI. As primary endpoint, we investigated MACE, a composite of all-cause mortality, myocardial infarction or ischemic stroke during 8 years of follow-up. As secondary endpoint, we investigated all-cause mortality.
Results:
Mean age was 63.8 years, 496 (70.8%) were male. Acute coronary syndrome (ACS) was diagnosed in 347 (49.5%) patients, stable coronary artery disease (SCAD) in 354 (50.5%). During follow-up 228 (32.5%) patients experienced MACE, and 161 (23.0%) died. In ACS patients, VWF was significantly associated with MACE (HR 1.402 (95%CI 1.003-1.959), p = 0.048), whereas ADAMTS13 and VWF/ADAMTS13 had no predictive value. In SCAD, neither VWF, ADAMTS13, nor VWF/ADAMTS13 correlated with MACE. VWF was significantly associated with all-cause death in ACS patients (HR 1.841 (95%CI 1.187-2.856), p = 0.006), but not in SCAD (1.394 (95%CI 0.856-2.269), p = 0.181). ADAMTS13 and VWF/ADAMTS13 were not correlated with ACS and SCAD, respectively.
Conclusion:
VWF but not ADAMTS13 and VWF/ADAMTS13 was associated with MACE and mortality in patients with ACS but not SCAD. This finding highlights the importance of VWF as an essential marker of risk in patients with ACS.
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