Pathophysiological mechanisms of thromboembolism

Area of Science:

• Biomedical science
• Hematology
• Vascular biology

Background:

• Endothelial cells maintain a non-thrombogenic surface under normal conditions.
• In disease states like trauma or infection, endothelial cells undergo perturbation, switching from anticoagulant to procoagulant activity.
• Endothelial cells possess surface receptors capable of initiating and propagating the coagulation cascade.

Purpose of the Study:

• To review the regulation of hemostatic balance at the blood-tissue interface.
• To discuss the role of the fibrinolytic system in preventing thromboembolism, particularly postoperative deep vein thrombosis.

Main Methods:

• Review of current scientific literature on hemostasis and the fibrinolytic system.
• Analysis of data on endothelial cell function in disease states.
• Examination of studies investigating the link between fibrinolytic activity and postoperative deep vein thrombosis.

Main Results:

• Endothelial cells actively participate in initiating and propagating coagulation.
• Defects in the fibrinolytic system are implicated as pathogenic factors in postoperative deep vein thrombosis.
• An active fibrinolytic system appears protective against the development of postoperative deep vein thrombosis.

Conclusions:

• Endothelial cells play a dynamic role in hemostasis, transitioning to a procoagulant state when perturbed.
• Fibrinolytic system function is crucial in preventing thromboembolic events.
• Screening for fibrinolytic abnormalities may aid in identifying individuals susceptible to postoperative deep vein thrombosis.