Regulation of tissue factor coagulant activity on cell surfaces
نویسندگان
چکیده
منابع مشابه
Coagulant activity of leukocytes. Tissue factor activity.
Peritoneal leukocytes harvested from rabbits which have received two spaced doses of endotoxin have significantly greater (10-fold) coagulant activity than leukocytes from control rabbits. The coagulant activity accelerates the clotting of normal plasma and activates factor X in the presence of factor VII and calcium and is therefore regarded as tissue factor. A total of 40-80 mg tissue factor ...
متن کاملCell-derived vesicles exposing coagulant tissue factor in saliva.
On vascular damage, coagulation is initiated by extravascular tissue factor (TF). Intravascular TF, which is present on circulating cell-derived vesicles, is noncoagulant under physiologic conditions but prothrombotic under pathologic conditions. Human saliva triggers coagulation, but the mechanism and physiologic relevance are unknown. Because saliva is known to contain TF, we hypothesized tha...
متن کاملMurine tissue factor coagulant activity is critically dependent on the presence of an intact allosteric disulfide.
Tissue factor activation (decryption) has been proposed to be dependent on the cysteine 186-cysteine 209 allosteric disulfide in the tissue factor extracellular domain. Tissue factor procoagulant activity is under the control of protein disulfide isomerase-dependent modulation and nitrosylation of this disulfide. Human tissue factor disulfide mutants have been proposed as a model for encrypted ...
متن کاملThe Role of Putative Phosphatidylserine-Interactive Residues of Tissue Factor on Its Coagulant Activity at the Cell Surface
Exposure of phosphatidylserine (PS) on the outer leaflet of the cell membrane is thought to play a critical role in tissue factor (TF) decryption. Recent molecular dynamics simulation studies suggested that the TF ectodomain may directly interact with PS. To investigate the potential role of TF direct interaction with the cell surface phospholipids on basal TF activity and the enhanced TF activ...
متن کاملTissue-factor coagulant activity of cultured human endothelial and smooth muscle cells and fibroblasts.
The tissue-factor (thromboplastic) activity of cultured human endothelial cells and fibroblasts is low at time of transfer into fresh medium but increases 3-10 fold. Endothelial cells reach peak activity (400 U/10(5) cells) 5-8 hr after subculture. Activity in fibroblast cultures peaks (3000-12,000 U/10(5) cells) 7-12 hr after subculture. After attaining maximum activity, endothelial and fibrob...
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ژورنال
عنوان ژورنال: Journal of Thrombosis and Haemostasis
سال: 2012
ISSN: 1538-7933
DOI: 10.1111/jth.12003