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Trends Mol Med. 2004 Apr;10(4):171-8.

Role of platelet P-selectin and microparticle PSGL-1 in thrombus formation.

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Center for Hemostasis, Thrombosis and Vascular Biology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA.


P-selectin and P-selectin glycoprotein ligand 1 (PSGL-1) are vascular adhesion molecules that play an important role in leukocyte-endothelial and leukocyte-platelet interaction during the inflammatory response. Their functions are now known to include a role in thrombus formation, specifically in relation to fibrin generation and propagation. Recent findings have demonstrated that leukocyte-derived microparticles, bearing both tissue factor and PSGL-1, circulate in the blood and accumulate in the developing platelet-rich thrombus following vessel wall injury, thus concentrating tissue factor at the site of vascular injury and initiating blood coagulation.

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