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Hypercoagulation and Antithrombotic Treatment in Coronavirus 2019: A New Challenge.
Abstract The novel coronavirus 2019 (COVID-19) is clinically characterized by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is responsible for a high number of patients needing mechanical ventilation or intensive care units treatment and for the elevated mortality risk. A link between COVID-19 and multiorgan failure may be dependent on the fact that most COVID-19 patients are complicated by pneumonia, which is known to be associated with early changes of clotting and platelet activation and artery dysfunction; these changes may implicate in thrombotic-related events such as myocardial infarct...
Source: Thrombosis and Haemostasis - April 28, 2020 Category: Hematology Authors: Violi F, Pastori D, Cangemi R, Pignatelli P, Loffredo L Tags: Thromb Haemost Source Type: research

Heparin-induced thrombocytopenia and thrombosis in a patient with Covid-19
Covid-19 has significant implications of hematologic systems, including lymphocytopenia, thrombocytopenia, ischemic or hemorrhagic stroke, pulmonary thromboembolism, and myocardial infarction [1,2]. Iwasaki et al. reported that the pathogen of Covid-19, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), can induce immune dysfunction, inflammation, and antibody-dependent enhancement by activating host cells via the Fc γIIa receptor in the same way as SARS-CoV-1 [3].
Source: Thrombosis Research - August 2, 2020 Category: Hematology Authors: Ching-Tai Huang, Shao-Yun Hsu, Ko-Wei Chang, Chung-Guei Huang, Cheng-Ta Yang, Ming-Huei Cheng Tags: Letter to the Editors-in-Chief Source Type: research

Coagulopathy and thromboembolic events in patients with SARS-CoV-2 infection: pathogenesis and management strategies
AbstractIn October 2019, a viral infectious disease appeared in the city of Wuhan in China. A new betacoronavirus, SARS-CoV-2, has been recognized as the responsible pathogen in this infection. Although coronavirus disease is principally expressed as a pulmonary infection, critical SARS-CoV-2 infection is frequently complicated with coagulopathy, and thromboembolic events are recognizable in several patients. Dehydration, acute inflammatory condition, protracted immobilization during disease, existence of multiple cardiovascular risk factors such as diabetes, obesity or hypertension, previous coronary artery disease, ische...
Source: Annals of Hematology - August 13, 2020 Category: Hematology Source Type: research

Complement dysregulation is associated with severe COVID-19 illness
Haematologica. 2021 Jul 22. doi: 10.3324/haematol.2021.279155. Online ahead of print.ABSTRACTSevere acute respiratory syndrome coronavirus-2 (SARS-CoV-2) may manifest as thrombosis, stroke, renal failure, myocardial infarction, and thrombocytopenia, reminiscent of other complement-mediated diseases. Multiple clinical and preclinical studies have implicated complement in the pathogenesis of COVID-19 illness. We previously found that the SARS-CoV-2 spike protein activates the alternative pathway of complement (APC) in vitro through interfering with the function of complement factor H, a key negative regulator of APC. Here, w...
Source: Haematologica - July 22, 2021 Category: Hematology Authors: Jia Yu Gloria F Gerber Hang Chen Xuan Yuan Shruti Chaturvedi Evan M Braunstein Robert A Brodsky Source Type: research

Platelets and COVID-19
Hamostaseologie. 2021 Oct;41(5):379-385. doi: 10.1055/a-1581-4355. Epub 2021 Oct 25.ABSTRACTIn 2019 first reports about a new human coronavirus emerged, which causes common cold symptoms as well as acute respiratory distress syndrome. The virus was identified as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and severe thrombotic events including deep vein thrombosis, pulmonary embolism, and microthrombi emerged as additional symptoms. Heart failure, myocardial infarction, myocarditis, and stroke have also been observed. As main mediator of thrombus formation, platelets became one of the key aspects in SARS-C...
Source: Hamostaseologie - October 25, 2021 Category: Hematology Authors: Anne-Katrin Rohlfing Dominik Rath Tobias Geisler Meinrad Gawaz Source Type: research

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