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| http://dx.doi.org/10.3389/fmed.2022.988919 | DOI Listing |
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Prothrombin prevents fatal T cell-dependent anemia during chronic virus infection of mice.
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Division of Hematology, Cincinnati Children's Hospital Medical Center, Cincinnati, United States of America.
Thrombin promotes the proliferation and function of CD8+ T cells. To test if thrombin prevents exhaustion and sustains antiviral T cell activity during chronic viral infection, we depleted the thrombin-precursor prothrombin to 10% of normal levels in mice prior to infection with the clone 13 strain of lymphocytic choriomeningitis virus. Unexpectedly, prothrombin insufficiency resulted in 100% mortality after infection that was prevented by depletion of CD8+ T cells, suggesting that reduced availability of prothrombin enhances virus-induced immunopathology.
View Article and Find Full Text PDFAssessment of Hypercoagulability in Splanchnic Vein Thrombosis by Measurement of the Hemostasis Enzymes Thrombin and Activated Protein C.
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Institute of Experimental Hematology and Transfusion Medicine, University Hospital Bonn, 53127 Bonn, Germany.
Splanchnic vein thrombosis (SVT), which is particularly prevalent in myeloproliferative neoplasms (MPNs), has a multifactorial pathomechanism involving the anticoagulant protein C (PC) pathway. To better characterize the hypercoagulable state in SVT we assessed its key enzymes thrombin and activated PC (APC). The study population included 73 patients with SVT, thereof 36 MPN+, confirmed by bone marrow biopsy, 37 MPN-, and 30 healthy controls.
View Article and Find Full Text PDFAssociation between Clot Waveform Analysis Parameters and the Severity of Liver Cirrhosis.
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Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand.
Background: Clot waveform analysis (CWA) provides a global assessment of hemostasis and may be useful for patients with cirrhosis with complex hemostatic abnormalities. This study aimed to assess the association between prothrombin time (PT-) and activated partial thromboplastin time (aPTT-) based CWA parameters and cirrhosis severity and prospectively evaluate the role of CWA in predicting mortality and acute decompensation (AD) over 1 year.
Methods: This prospective study included adult patients with cirrhosis between June 2021 and December 2023 at Chulalongkorn University Hospital.
Assessment of anticoagulant safety and coagulation analysis in mice using the VETSCAN VSpro analyzer.
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Melbourne Dental School, The University of Melbourne Melbourne Dental School, Victoria, Australia.
Animal models of thrombosis play a critical role in research, helping us understand the mechanisms of hemostasis and thrombus formation, as well as in the screening of anti-thrombotic drugs. This study aimed to evaluate the safety profile of two anticoagulants in murine research and to assess coagulation parameters, including prothrombin time (PT) and activated partial thromboplastin time (aPTT), using the VETSCAN VSpro coagulation analyzer in wild-type (C57BL/6) mice following administration of anticoagulants. Two experiments were conducted involving a total of sixty wild-type mice that received two common anticoagulants.
View Article and Find Full Text PDFThe impact of a short-term high-fat diet on coagulation function in a mouse model and its role in exacerbating concanavalin A-induced liver injury.
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Department of Anatomy, Aichi Medical University, 1-1, Yazakokarimata, Nagakute City, Aichi, 480-1195, Japan.
Background: Recently, the number of patients with metabolic dysfunction-associated steatotic liver disease (MASLD) and its more advanced condition, metabolic dysfunction-associated steatohepatitis (MASH), has been increasing. These patients are at a higher risk of cardiovascular events and thromboembolism. However, the direct impact of high-fat diet (HFD), a cause of MASLD, on liver coagulation function is not well understood.
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