Mouse venous thrombosis upon silencing of anticoagulants depends on tissue factor and platelets, not FXII or neutrophils.

Heestermans, Marco; Salloum-Asfar, Salam; Streef, Tom; Laghmani, El Houari; Salvatori, Daniela; Luken, Brenda M; Zeerleder, Sacha S.; Spronk, Henri M H; Korporaal, Suzanne J; Kirchhofer, Daniel; Wagenaar, Gerry T M; Versteeg, Henri H; Reitsma, Pieter H; Renné, Thomas; van Vlijmen, Bart J M (2019). Mouse venous thrombosis upon silencing of anticoagulants depends on tissue factor and platelets, not FXII or neutrophils. Blood, 133(19), pp. 2090-2099. American Society of Hematology 10.1182/blood-2018-06-853762

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Tissue factor, coagulation factor XII, platelets, and neutrophils are implicated as important players in the pathophysiology of (experimental) venous thrombosis (VT). Their role became evident in mouse models in which surgical handlings were required to provoke VT. Combined inhibition of the natural anticoagulants antithrombin (Serpinc1) and protein C (Proc) using small interfering RNA without additional triggers also results in a venous thrombotic phenotype in mice, most notably with vessel occlusion in large veins of the head. VT is fatal but is fully rescued by thrombin inhibition. In the present study, we used this VT mouse model to investigate the involvement of tissue factor, coagulation factor XII, platelets, and neutrophils. Antibody-mediated inhibition of tissue factor reduced the clinical features of VT, the coagulopathy in the head, and fibrin deposition in the liver. In contrast, genetic deficiency in, and small interfering RNA-mediated depletion of, coagulation factor XII did not alter VT onset, severity, or thrombus morphology. Antibody-mediated depletion of platelets fully abrogated coagulopathy in the head and liver fibrin deposition. Although neutrophils were abundant in thrombotic lesions, depletion of circulating Ly6G-positive neutrophils did not affect onset, severity, thrombus morphology, or liver fibrin deposition. In conclusion, VT after inhibition of antithrombin and protein C is dependent on the presence of tissue factor and platelets but not on coagulation factor XII and circulating neutrophils. This study shows that distinct procoagulant pathways operate in mouse VT, dependent on the triggering stimulus.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Haematology and Central Haematological Laboratory
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Hämatologie (Erwachsene)

UniBE Contributor:

Zeerleder, Sacha Sergio

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0006-4971

Publisher:

American Society of Hematology

Language:

English

Submitter:

Pierrette Durand Lüthi

Date Deposited:

17 Sep 2019 09:09

Last Modified:

03 Nov 2019 12:28

Publisher DOI:

10.1182/blood-2018-06-853762

PubMed ID:

30898865

BORIS DOI:

10.7892/boris.133191

URI:

https://boris.unibe.ch/id/eprint/133191

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