An inhibitor of adenase, which is absent in leukemic patients, was studied in thrombocytes of healthy persons. The inhibitor, localized in the granular fraction, was isolated by ultracentrifugation in sucrose gradient.
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Platelet Function Assay Using Dielectric Blood Coagulometry.
Anal Chem
January 2025
Department of Anesthesiology, Tokyo Medical and Dental University, Graduate School of Medical and Dental Sciences, 1-5-45 Yushima, Bunkyo-ku 113-8510, Tokyo, Japan.
The hemostatic function of platelets is complementary to blood coagulation. However, traditional platelet function tests have primarily focused on measuring platelet aggregation, reducing their clinical effectiveness for antiplatelet drug monitoring. To address this limitation, we propose a new test principle that evaluates platelet function and the effects of antiplatelet drugs through blood coagulation reactions.
View Article and Find Full Text PDFPlatelet mass index, systemic immune-inflammation index, and neutrophil-lymphocyte ratio as practical markers in childhood brucellosis.
Rev Paul Pediatr
January 2025
Afyonkarahisar Health Sciences University, Faculty of Medicine, Department of Child Health and Diseases, Afyonkarahisar, Turkey.
Objective: Brucellosis is a multisystem infectious disease and may cause an increase in acute phase reactants. This study aimed to examine the platelet mass index (PMI), the neutrophil-lymphocyte ratio (NLR), and systemic immune-inflammation index (SII) in children with brucellosis and to determine their roles in focal involvement.
Methods: This retrospective observational study included 69 patients with brucellosis and a control group of 69 healthy children.
Exploring and validating associations between six systemic inflammatory indices and ischemic stroke in a middle-aged and old Chinese population.
Aging Clin Exp Res
January 2025
Centre for Precision Health, Edith Cowan University, Perth, WA, Australia.
Background: Inflammation and maladaptive immune mechanisms have been substantiated as integral components in the critical pathological processes of the injury cascade in ischemic stroke (IS). This study aimed to explore the associations between six systemic inflammatory indices and IS in a Chinese population.
Methods: This was a case-control study based on the retrospective review of electronic medical records from two hospitals in Shandong Province, China.
Comprehensive Phenotyping of Extracellular Vesicles in Plasma of Healthy Humans - Insights Into Cellular Origin and Biological Variation.
J Extracell Vesicles
January 2025
Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
Despite immense interest in biomarker applications of extracellular vesicles (EVs) from blood, our understanding of circulating EVs under physiological conditions in healthy humans remains limited. Using imaging and multiplex bead-based flow cytometry, we comprehensively quantified circulating EVs with respect to their cellular origin in a large cohort of healthy blood donors. We assessed coefficients of variations to characterize their biological variation and explored demographic, clinical, and lifestyle factors contributing to observed variation.
View Article and Find Full Text PDFCharacterisation of Platelet Releasate Proteome in Relapsing-Remitting Multiple Sclerosis Reveals Dysregulation of Inflammatory Signalling and Extracellular Vesicle Dynamics.
Proteomics Clin Appl
January 2025
SPHERE Research Group, Conway Institute, University College Dublin, Dublin, Ireland.
Purpose: Multiple Sclerosis is an inflammatory neurodegenerative disease characterised by blood-brain barrier dysfunction and leukocyte infiltration into the CNS. Platelets are best known for their contributions to haemostasis, however, upon activation, platelets release an abundance of soluble and vesicular-associated proteins, termed the platelet releasate (PR). This milieu contains numerous inflammatory and vasoactive proteins, that can attract leukocytes and alter endothelial permeability.
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