Related Experiment Video
Updated: Mar 9, 2026
06:03
Electrolytic Inferior Vena Cava Model EIM of Venous Thrombosis
Published on: July 12, 2011
17.8K
A Mathematical Model of Venous Thrombosis Initiation
Priscilla Elizondo1, Aaron L Fogelson2
1Department of Mathematics, University of Utah, Salt Lake City, Utah.
Biophysical Journal
|December 22, 2016
Summary
A mathematical model explains venous thrombosis (VT) initiation. Key factors like tissue factor (TF) and inhibitors on endothelial cells (ECs) determine thrombin burst occurrence, influencing VT progression.
Area of Science:
- Biophysics
- Computational Biology
- Hematology
Background:
- Venous thrombosis (VT) initiation involves endothelial cell (EC) activation under slow flow.
- The tissue factor (TF) pathway drives coagulation, leading to fibrin formation.
- Understanding VT requires modeling flow dynamics, cellular interactions, and inhibitor activities.
Purpose of the Study:
- To develop a mathematical model simulating VT initiation.
- To investigate the roles of EC activation, coagulation factors, and inhibitors in thrombin generation.
- To elucidate the mechanisms behind the slower progression of VT compared to arterial thrombosis.
Main Methods:
- A mathematical model incorporating TF pathway reactions up to fibrin formation.
- Inclusion of blood cell accumulation on activated ECs.
- Modeling of flow-mediated transport of proteins and cells, and inhibitor activities (heparan-sulfate-accelerated antithrombin, activated protein C).
Main Results:
- Thrombin burst occurrence depends critically on TF density, thrombomodulin concentration, and heparan-sulfate-accelerated antithrombin activity on ECs.
- Small changes in these parameters can switch between "no burst" and "burst" states.
- Synergies among inhibitors and the influence of accumulating procoagulant cells (monocytes, platelets, MPs) on thrombin generation were predicted.
Conclusions:
- The model highlights threshold-dependent mechanisms for thrombin burst initiation in VT.
- Cellular accumulation rates significantly impact VT progression, explaining its slower pace versus arterial thrombosis.
- The model provides insights into the complex interplay of factors governing venous thrombosis.
Related Concept Videos
01:30Venous Thrombosis I: Introduction
601
Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...
601
01:29Venous Thrombosis III: Interprofessional Care
433
Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
433
01:20Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
406
The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
406
01:20Extrinsic and Intrinsic Pathways of Hemostasis
14.5K
Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which...
14.5K
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
2.2K
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
2.2K
01:16Vascular Spasm
4.4K
The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
4.4K