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| http://dx.doi.org/10.1002/ajh.26372 | DOI Listing |
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Complex Pattern of Platelet Activation/Reactivity After SARS-CoV-2 Infection.
Int J Mol Sci
December 2024
Department of Hemostasis and Hemostatic Disorders, Medical University of Lodz, Mazowiecka 6/8, 92-215 Lodz, Poland.
COVID-19 and post-COVID (long COVID) are associated with thromboembolic complications; however, it is still not clear whether platelets play a leading role in this phenomenon. The platelet hyperreactivity could result from the direct interaction between platelets and viral elements or the response to inflammatory and prothrombotic factors released from blood and vessel cells following infection. The existing literature does not provide clear-cut answers, as the results determining platelet status vary according to methodology.
View Article and Find Full Text PDFAssociation of Systemic Thromboxane Generation With Risk of Developing Heart Failure.
J Am Coll Cardiol
January 2025
Division of Biostatistics and Health Services Research, Department of Population and Quantitative Health Sciences, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA.
Background: Systemic thromboxane A generation, which is readily assessed by quantifying thromboxane B metabolites (TXB-M) in the urine, is associated with impaired cardiac performance and mortality in aspirin (ASA) users with heart failure (HF).
Objectives: This study sought to determine the association of urinary TXB-M with the risk of developing HF in individuals without prior history of HF and with normal left ventricular function irrespective of ASA use.
Methods: Urine TXB-M were measured by immunoassay and adjusted to urine concentration and renal function (TXB-M) in 2,611 Framingham Heart Study participants (54.
Missing the mark(ers): circulating endothelial cells and endothelial-derived extracellular vesicles are elevated in sickle cell disease plasma.
Front Immunol
January 2025
Department of Medicine, Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN, United States.
Sickle cell disease (SCD) is a devastating hemolytic disease, marked by recurring bouts of painful vaso-occlusion, leading to tissue damage from ischemia/reperfusion pathophysiology. Central to this process are oxidative stress, endothelial cell activation, inflammation, and vascular dysfunction. The endothelium exhibits a pro-inflammatory, pro-coagulant, and enhanced permeability phenotype.
View Article and Find Full Text PDFDevelopment of a simplified platelet cryopreservation method: An in vitro investigation of reducing the DMSO concentration to allow administration without its pre-transfusion removal.
Vox Sang
January 2025
Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia.
Background And Objectives: The most widely used method of platelet cryopreservation requires the addition of 5%-6% dimethylsulphoxide (DMSO), followed by its pre-freeze removal via centrifugation, to minimize toxicity. However, this adds complexity to the pre-freeze and post-thaw processing. Accordingly, the aim of this study was to simplify platelet cryopreservation by reducing the DMSO concentration and omitting the requirement for pre-transfusion removal.
View Article and Find Full Text PDFBy activating endothelium histone H4 mediates oleic acid-induced acute respiratory distress syndrome.
BMC Pulm Med
January 2025
Research Center of Occupational Medicine, Peking University Third Hospital, Beijing, 100191, China.
Article Synopsis
- The study explored how extracellular histone H4 contributes to acute respiratory distress syndrome (ARDS) triggered by oleic acid (OA) in mice.
- The research found that levels of histone H4 increased significantly after OA injection, correlating with the severity of ARDS, and that pre-treatment with histone H4 worsened lung edema and mortality.
- Histone H4 activated endothelial cells through mechanisms involving heparan sulfate degradation and certain receptors, leading to inflammation and thrombus formation in the lungs.
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