Cited by 111Blood Coagulation and Thrombosis MechanismsPlatelet Disorders and TreatmentsBlood properties and coagulation

Tissue factor expression in blood cells.

Østerud, Bjarne·2010·Thrombosis Research

Abstract

The popular concept of TF serving predominantly as a hemostatic envelope encapsulating the vascular bed, has recently been challenged by the observation that blood of healthy individuals may form TF-induced thrombus under conditions entailing shear stress and activated platelets, corroborating the notion of blood borne TF. Accordingly, small amounts of TF activity is detected in calcium ionophore-stimulated monocytes, whereas it is questionable whether neutrophils and eosinophils express TF. Still there are contradicting reports on TF synthesis and expression in activated platelets, but when using a very sensitive and specific assay for TF activity measurements, we fail to detect TF activity associated with platelets activated with various agonists. However, activated platelets may play a role in decrypting monocyte TF activity in a process entailing transfer of TF to activated platelets in a P-selectin-PSGL-1 reaction whereby inactive TF (encrypted) becomes active through the availability of clusters of phosphatidylserine. Microparticles from plasma of healthy subjects possess weak TF-like activity which is not inactivated by anti-TF antibody. Endothelial cells are well documented to synthesize TF by several agonists in vitro. In contrast, there is little evidence that these cells are capable of synthesizing TF in vivo, and a recent report fails to show that TF on the endothelium may play any role in thrombin generation in a murine endotoxemia model. It may be concluded that monocytes are the only blood cells that synthesize and express TF and which may be the only source for TF-induced thrombosis when the endothelium is intact.

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Crossref · 10.1016/j.thromres.2010.01.032

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  • Tissue factor (TF) is the primary activator of coagulation and is mainly produced by monocytes in an inflammatory state.

    “Tissue factor (TF) is the primary activator of coagulation and is mainly produced by monocytes in an inflammatory state (Østerud, 2010).”

    From The Pathogenesis and Immune Evasive Mechanisms of Equine Herpesvirus Type 1 (2021) · cites this paper as Østerud, 2010

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Authors
Østerud, B.
Affiliations
UiT The Arctic University of Norway (NO)
Corresponding author
Østerud, Bjarne
Venue
Thrombosis Research
Publisher
Elsevier BV
Published
2010-04
Volume
125
Pages
S31-S34
ISSN
0049-3848 (ISSN-L)
OpenAlex
W2044057465
Cited by
111
References
31
Citations by year
2025: 3 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 6 · 2020: 5 · 2019: 2 · 2018: 4 · 2017: 4 · 2016: 5 · 2015: 9 · 2014: 11 · 2013: 15 · 2012: 20
FWCI
2.68
Type
journal article
Language
en
Open access
closed
Locations
  • Thrombosis Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Hematology › Blood Coagulation and Thrombosis Mechanisms
  • Health Sciences › Medicine › Hematology › Platelet Disorders and Treatments
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Blood properties and coagulation
Keywords
tissue factor, blood cells, monocytes, platelets, neutrophils, eosinophils, endothelial cells, shear stress, P-selectin, PSGL-1, phosphatidylserine, microparticles, thrombin generation, endotoxemia, hemostasis
MeSH terms
Animals, Blood Platelets, Eosinophils, Humans, Monocytes, Neutrophils, Phosphatidylserines, Thrombin, Thromboplastin, Thrombosis, Platelet Activation, P-Selectin, Endotoxemia, Endothelial Cells, Mice

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