期刊
FRONTIERS IN BIOSCIENCE-LANDMARK
卷 11, 期 -, 页码 830-837出版社
FRONTIERS IN BIOSCIENCE INC
DOI: 10.2741/1840
关键词
inflammation; platelet; leukocyte; microparticles; thrombosis; remodelling; review
As a result of vascular injury, activated platelets will rapidly interact with circulating platelets, via membrane glycoprotein complex alphaIIbbeta3 (GPIIb-IIIa) and fibrinogen, to form a thrombus or a plug preventing fatal bleeding. In addition, platelets interacting with ruptured atherosclerotic plaques or with the surface of diseased vessels can aggregate and induce ischemia that prevents blood flow. However, increasing evidence has also shown that circulating platelets interact with leukocytes and endothelial cells, via specific adhesion molecules, in inflammation, vascular remodelling and thrombosis. The aim of this chapter is to present the importance of cell-cell interactions involving platelets and leukocytes in events related to inflammation, coagulation, vascular remodelling and thrombosis. A key adhesion molecule implicated in platelet interaction with leukocytes is P-selectin, also known as CD62P. It is present on activated platelets and endothelial cells, and its counterpart on leukocytes is known as P-selectin glycoprotein ligand-1 (PSGL-1). A critical co-factor leading to leukocyte activation in platelet-monocyte aggregate formation is the presence of a chemokine known as RANTES. It acts in concert with platelet P-selectin and PSGL-1 in monocyte stimulation.
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