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Related Experiment Videos

Leukocyte adhesion and thrombosis.

Vahid Afshar-Kharghan1, Perumal Thiagarajan

  • 1Department of Pathology and Medicine (Thrombosis Research), Baylor College of Medicine, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas 77030, USA.

Current Opinion in Hematology
|December 2, 2005
PubMed
Summary

Leukocytes, crucial in inflammation, can promote thrombosis by activating coagulation. Understanding leukocyte adhesion mechanisms offers new therapeutic targets for antithrombotic strategies.

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Area of Science:

  • Cardiovascular Biology
  • Hematology
  • Immunology

Background:

  • Arterial thrombosis leads to significant morbidity and mortality.
  • Elevated leukocyte counts and inflammatory markers are key risk factors for thrombosis.

Purpose of the Study:

  • To review the cellular and molecular mechanisms by which adherent leukocytes induce a prothrombotic state.

Main Methods:

  • Review of existing literature on leukocyte function in thrombosis.

Main Results:

  • Leukocytes release microvesicles containing tissue factor, initiating thrombosis.
  • Leukocyte-derived mediators like cathepsin G and elastase activate coagulation and platelets.
  • Leukocytes play roles in sickle cell anemia, atherosclerotic plaque rupture, and myeloproliferative diseases.

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Conclusions:

  • Leukocyte adhesion to endothelium and platelets is critical for coagulation activation.
  • Excessive leukocyte activation during inflammation can cause systemic procoagulant states.
  • Targeting leukocyte adhesion may provide novel antithrombotic therapies.