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Mol Med Today. 1999 Feb;5(2):61-7.

Is extravasation a Fas-regulated process?

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  • 1Sackler School of Biomedical Sciences, Tufts University School of Medicine, Boston, MA 02135, USA.


The monolayer of endothelial cells that coats the luminal surface of the vessel wall has numerous physiological functions, including the prevention of coagulation, control of vascular permeability, maintenance of vascular tone and regulation of leukocyte extravasation. Recently, we detected functional Fas ligand (FasL) expression on the endothelial lining of blood vessels. FasL induces apoptotic cell death in the multitude of cell types that express its receptor, Fas. Here, we review the function of vascular endothelium in controlling leukocyte extravasation, and illustrate how the regulation of endothelial FasL expression might contribute to this process. We also describe the role of leukocyte extravasation in angiogenesis and atherosclerosis, and we suggest that FasL gene transfer might provide a means of treating diseases of the proliferative vessel wall, particularly those that result from the detrimental infiltration of inflammatory cells.

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