Search results for "Platelet"

Synthesis and processing of nanocrystalline tungsten carbide: Towards cemented carbides with optimal mechanical properties

2011

Abstract Nanocrystalline tungsten carbide has been obtained by reduction/carburization at low temperature from precursors obtained by freeze-drying of aqueous solutions. Nanocrystalline WC powders with a adequate content of carbon were mixed with submicrometric Cobalt powder (12 wt.%), obtained by same synthesis method, and sintered in vacuum furnace. The cemented carbides fabricated from experimental powders were compared with both commercial ultrafine and nanocrystalline WC-12Co mixtures consolidated by the same route. The synthesised powders were characterized by X-ray powder diffraction, elemental analysis and scanning and high resolution transmission electron microscopy. On the other h…

The Essential Thrombocythemia in 2020: What We Know and Where We Still Have to Dig Deep

2020

The Essential Thrombocythemia is a Chronic Philadelphia-negative Myeloproliferative Neoplasm characterized by a survival curve that is only slightly worse than that of age- and sex-adjusted healthy population. The criteria for diagnosis were reviewed in 2016 by WHO. The incidence varies from 0.2 to 2.5:100 000 people per year, with a prevalence of 38 to 57 cases per 100 000 people. The main characteristics of ET are the marked thrombocytosis and the high frequency of thrombosis. The spectrum of symptoms is quite wide, but fatigue results to be the most frequent. Thrombosis is frequently observed, often occurring before or at the time of diagnosis. The classification of thrombotic risk has …

Antiplatelets in acute coronary syndrome in Poland – from guidelines to clinical practice

2021

Acute coronary syndrome is a factor for poor prognosis and recurrent cardiovascular events. Adequate antiplatelet therapy is crucial in patients with the acute coronary syndrome for risk reduction. Such treatment is well described in four documents issued by the European Society of Cardiology, which precisely illustrate the use of antiplatelets in the settings of ST-elevated and non-ST elevated myocardial infarction. Despite its unquestioned role in the treatment of acute coronary syndrome, recent real-world-data from Polish registries reveal poor adherence to the guidelines-recommended antiplatelet treatment in Poland. Thus, we present here a comprehensive review of the use of antiplatelet…

Systemic inflammation in primary hypercholesterolemia results in platelet and leukocyte activation and their enhanced endothelial adhesiveness

2018

Apoptosis causes lumen formation during angiogenesis in vitro.

2002

Insights in ChAdOx1 nCoV-19 vaccine-induced immune thrombotic thrombocytopenia

2021

Abstract SARS-CoV-2 vaccine ChAdOx1 nCoV-19 (AstraZeneca) causes a thromboembolic complication termed vaccine-induced immune thrombotic thrombocytopenia (VITT). Using biophysical techniques, mouse models, and analysis of VITT patient samples, we identified determinants of this vaccine-induced adverse reaction. Super-resolution microscopy visualized vaccine components forming antigenic complexes with platelet factor 4 (PF4) on platelet surfaces to which anti-PF4 antibodies obtained from VITT patients bound. PF4/vaccine complex formation was charge-driven and increased by addition of DNA. Proteomics identified substantial amounts of virus production-derived T-REx HEK293 proteins in the ethyle…

In Situ Detection of Phosphorylated Platelet-derived Growth Factor Receptor β Using a Generalized Proximity Ligation Method

2007

Improved methods are needed for in situ characterization of post-translational modifications in cell lines and tissues. For example, it is desirable to monitor the phosphorylation status of individual receptor tyrosine kinases in samples from human tumors treated with inhibitors to evaluate therapeutic responses. Unfortunately the leading methods for observing the dynamics of tissue post-translational modifications in situ, immunohistochemistry and immunofluorescence, exhibit limited sensitivity and selectivity. Proximity ligation assay is a novel method that offers improved selectivity through the requirement of dual recognition and increased sensitivity by including DNA amplification as a…

Introducing the new biomarker research approach into practice: Preliminary data from CXCL4 chemokine study in non-small cell lung cancer (NSCLC)

2012

P-147PLASMA PLATELET FACTOR 4 AS PREDICTOR OF ANGIOGENIC ACTIVITY: DIAGNOSTIC AND PROGNOSTIC TOOL FOR EARLY STAGE NON-SMALL CELL LUNG CANCER

2013

Evolving Risk Factors for Mortality after Lung Transplantation over the Last 10 Years: Insights from a Single-Centre Database

2016

s S233 218 (82%) patients received pooled platelet transfusion -median (IQR) 1(1-2) U. 209 (79%) and 129 (49%) patients received fresh frozen plasma (FFP) and cryoprecipitate with a median (IQR) of 3(2-4) and 0(0-0) U respectively. Conclusion: Rate and volume of transfusion of blood products compare favourably with centres performing surgery off CPB or on ECMO. Requirement for ECMO particularly for BTT, but also PGD is associated with high transfusion requirements.