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Real-Time Imaging of Platelet-Initiated Plasma Clot Formation and Lysis Unveils Distinct Impacts of Anticoagulants.
Thromb Haemost
January 2025
Department of Medical Physiology, Hamamatsu University School of Medicine, Hamamatsu, Japan.
Background: Fibrinolysis is spatiotemporally well-regulated and greatly influenced by activated platelets and coagulation activity. Our previous real-time imaging analyses revealed that clotting commences on activated platelet surfaces, resulting in uneven-density fibrin structures, and that fibrinolysis initiates in dense fibrin regions and extends to the periphery. Despite the widespread clinical use of direct oral anticoagulants (DOACs), their impact on thrombin-dependent activation of thrombin-activatable fibrinolysis inhibitor (TAFI) and fibrinolysis remains unclear.
View Article and Find Full Text PDFImpaired coagulation parameters in early RA are restored by effective antirheumatic therapy: a prospective pilot study.
RMD Open
December 2024
Rheumatology, Amsterdam UMC Locatie VUmc, Amsterdam, The Netherlands
Objectives: To assess the effect of treatment on haemostatic parameters in patients with early rheumatoid arthritis (RA).
Methods: Patients with newly diagnosed RA started methotrexate and were randomised to additional conventional treatment, certolizumab pegol, abatacept or tocilizumab. Several biomarkers for haemostasis were analysed including parameters of the two global haemostatic assays-overall haemostatic potential (OHP) and endogenous thrombin potential (ETP), as well as single haemostatic factors-fibrinogen, prothrombin fragment 1+2 (F1+2), D-dimer, thrombin activatable fibrinolysis inhibitor (TAFI) and clot lysis time (CLT) in 24 patients at baseline, 12 and 24 weeks after the start of the treatment.
Thrombus composition and its implication in ischemic stroke assessment and revascularization treatments.
Neurologia (Engl Ed)
January 2025
Servicio de Neurología, Hospital Universitario Navarra, Pamplona, Navarra, Spain; RICORS-ICTUS, ISCIII, Madrid, Spain.
Introduction: Since mechanical thrombectomy has allowed ischaemic stroke thrombus retrieval, the exhaustive study of this material has enabled better understanding of the potential physiopathological processes involved in thrombus formation.
Development: Thrombotic pathways involved in the different vascular beds share common mechanisms, causing difficulties in the identification of specific patterns associated with stroke aetiology. However, other factors such as clot formation time, associated inflammatory status, or activation of additional immune and coagulation pathways (neutrophil extracellular trap [NET] delivery, platelet aggregation, endothelial activation, and von Willebrand Factor release) have been described as determinants in thrombus characteristics.
Prospective Application of Mesenchymal Stem Cell-Derived Exosomes in the Treatment of Disseminated Intravascular Coagulation.
Int J Nanomedicine
November 2024
Department of Scientific Research Center, China-Japan Union Hospital of Jilin University, Changchun, Jilin Province, People's Republic of China.
Disseminated intravascular coagulation (DIC) is an acquired disorder characterized by systemic activation of blood coagulation, which can arise from various causes. Owing to its abrupt onset, rapid progression, and high mortality rate, DIC presents a major clinical challenge. Anticoagulant drugs, such as heparin or low-molecular-weight heparin, are the current gold standard of treatment; however, these interventions pose considerable bleeding risks.
View Article and Find Full Text PDFMaggot kinase: A novel and cost-effective fibrinolytic enzyme from maggots.
Int J Biol Macromol
December 2024
Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs of China, Beijing University of Agriculture, Beijing 102206, PR China; Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing 102206, PR China. Electronic address:
Maggot kinase, a novel fibrinolytic enzyme source, has been isolated from fly maggots and comprehensively characterized. Using CM-52 ion exchange chromatography and affinity chromatography, we obtained a highly purified and active form of the enzyme. In particular, the fibrinolytic activity of maggot kinase, evaluated using the fibrin plate method, was found to be 8.
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