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Coagulation abnormalities in SARS-CoV-2 infection: overexpression tissue factor.
Eslamifar, Zahra; Behzadifard, Mahin; Soleimani, Masoud; Behzadifard, Saba.
  • Eslamifar Z; Dezful university of medical sciences, Dezful, Iran.
  • Behzadifard M; Dezful university of medical sciences, Dezful, Iran. mahinbehzadi2020@gmail.com.
  • Soleimani M; Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
  • Behzadifard S; Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Thromb J ; 18(1): 38, 2020 Dec 15.
Article in English | MEDLINE | ID: covidwho-977680
ABSTRACT
Among the pathways and mediators that may be dysregulated in COVID-19 infection, there are proinflammatory cytokines, lymphocyte apoptosis, and the coagulation cascade. Venous and arterial thromboembolisms also are frequent in COVID-19 patients with the increased risk of some life-threatening complications such as pulmonary embolism, myocardial infarction, and ischemic stroke. In this regard, overproduction of proinflammatory cytokines such as IL-6, IL-1ß, and TNF-α induce cytokine storms, increase the risk of clot formation, platelet activation, and multiorgan failure that may eventually lead to death among these patients. Surface S protein of SARS-CoV-2 binds to its target transmembrane receptor, named as angiotensin converting enzyme 2 (ACE2(, on various cells such as lymphocyte, alveolar cells, monocytes/macrophages, and platelets. Notably, the activation of the coagulation cascade occurs through tissue factor (TF)/FVIIa-initiated hemostasis. Accordingly, TF plays the major role in the activation of coagulation system during viral infection. In viral infections, the related coagulopathy multiple factors such as inflammatory cytokines and viral specific TLRs are involved, which consequently induce TF expression aberrantly. SARS-COV-2 may directly infect monocytes/ macrophages. In addition, TF expression/release from these cells may play a critical role in the development of COVID-19 coagulopathy. In this regard, the use of TF- VIIa complex inhibitor may reduce the cytokine storm and mortality among COVID-19 patients.
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Full text: Available Collection: International databases Database: MEDLINE Type of study: Prognostic study Language: English Journal: Thromb J Year: 2020 Document Type: Article Affiliation country: S12959-020-00250-x

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Full text: Available Collection: International databases Database: MEDLINE Type of study: Prognostic study Language: English Journal: Thromb J Year: 2020 Document Type: Article Affiliation country: S12959-020-00250-x