Related Experiment Video
Updated: Jun 8, 2026
04:40
Venous Thrombosis Assay in a Mouse Model of Cancer
Published on: January 5, 2024
The link between vascular features and thrombosis
Charles T Esmon1, Naomi L Esmon
1Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, 73104, USA. esmonc@omrf.org
Annual Review of Physiology
|October 5, 2010
Summary
Vascular control of thrombosis is complex. Microcirculation stasis and inflammation, especially in aging, increase thrombotic risk by impairing anticoagulant functions, while surgery and trauma trigger coagulation.
Area of Science:
- Hematology
- Vascular Biology
- Thrombosis Research
Background:
- The precise mechanisms governing vascular control of thrombotic events are not fully understood.
- The vasculature contains crucial anticoagulant factors that regulate blood coagulation.
- The high endothelium-to-blood ratios in the microcirculation suggest stasis contributes to thrombotic risk.
Purpose of the Study:
- To elucidate the role of microcirculation stasis in thrombotic risk.
- To investigate how inflammation, aging, and surgical/traumatic conditions affect vascular anticoagulation and thrombosis.
- To understand the mechanisms by which surgery and trauma trigger coagulation.
Main Methods:
- Analysis of vascular anticoagulant factors and their regulation.
- Investigation of the microcirculation's role in thrombosis.
- Assessment of inflammation's impact on vascular anticoagulation, particularly in aging.
- Study of coagulation triggers released during surgery and trauma.
Main Results:
- Failure to rapidly access the microcirculation and its anticoagulant environment likely increases thrombotic risk.
- Inflammation potentiates thrombosis by downregulating vascular anticoagulants, a process worsened by aging.
- Surgery and trauma release cellular components that initiate coagulation via distinct pathways.
Conclusions:
- Microcirculatory dynamics and the integrity of vascular anticoagulant mechanisms are critical in preventing thrombosis.
- Aging and inflammatory processes significantly compromise vascular antithrombotic defenses.
- Understanding these pathways is key to managing thrombosis associated with surgery, trauma, and aging.
Related Concept Videos
01:30Venous Thrombosis I: Introduction
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...
01:20Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
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...
01:20Overview of the Vascular System
The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
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...
01:16Vascular Spasm
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 for...
01:24Disorders of Hemostasis
Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.