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| http://dx.doi.org/10.1182/bloodadvances.2022007336 | DOI Listing |
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Recombinant Anti-PF4 Antibodies Derived from Patients with Vaccine-Induced Immune Thrombocytopenia and Thrombosis (VITT) Facilitate Research and Laboratory Diagnosis of VITT.
Vaccines (Basel)
December 2024
Institut für Transfusionsmedizin, Universitätsmedizin Greifswald, 17489 Greifswald, Germany.
Background/objectives: Adenoviral vector-based vaccines against COVID-19 rarely cause vaccine-induced immune thrombocytopenia and thrombosis (VITT), a severe adverse reaction caused by IgG antibodies against platelet factor 4 (PF4). To study VITT, patient samples are crucial but have become a scarce resource. Recombinant antibodies (rAbs) derived from VITT patient characteristic amino acid sequences of anti-PF4 IgG are an alternative to study VITT pathophysiology.
View Article and Find Full Text PDFThe clinical impact of recent amphetamine exposure in aneurysmal subarachnoid hemorrhage patients.
Front Neurol
January 2025
Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, United States.
Background: Amphetamines possess sympathomimetic properties that can affect cerebral vasculature though conflicting reports exist about their effect on vasospasm risk and clinical outcomes in aneurysmal subarachnoid hemorrhage. This study aimed to characterize the impact of recent amphetamine use on vasospasm development in aneurysmal subarachnoid hemorrhage as well as neurological outcomes.
Methods: We retrospectively screened 441 consecutive patients admitted with a diagnosis of subarachnoid hemorrhage who underwent at least one cerebral digital subtraction angiogram.
Acute Decompensated Heart Failure: Structural and Functional Changes in Mitochondria.
Kardiologiia
December 2024
Research Institute of Cardiology, Branch of the Tomsk National Research Medical Center of the Russian Academy of Sciences, Tomsk.
Aim: Comparative assessment of structural changes in cardiomyocyte mitochondria of the right atrial appendage and the mitochondrial respiratory function in peripheral blood leukocytes in a cohort of patients after acute decompensated heart failure (ADHF) and with stable chronic heart failure of ischemic etiology with reduced ejection fraction (CHFrEF) or moderately reduced ejection fraction (CHFmrEF) of the left ventricle.
Material And Methods: The study analyzed 40 micrographs of right atrial appendage cardiomyocytes obtained from 12 patients with CHFrEF and CHFmrEF. The study protocol was registered on ClinicalTrials.
Effect of Grazing on the Welfare of Dairy Cows Raised Under Different Housing Conditions in Compost Barns.
Animals (Basel)
November 2024
Graduate Program in Animal Science, Santa Catarina State University (UDESC), Chapecó 89815-630, Brazil.
There is currently no established information for assessing the general welfare conditions and behavior of dairy cows housed in compost-bedded pack barns (CBPs) that allow access to pasture. Therefore, the objective of this study was to evaluate and classify the welfare and behavior of dairy cows in three different housing conditions within CBPs in southern Brazil. During both the cold and hot seasons, nine farms were divided into three groups: CONV (conventional, large, full-time barns), ADAP (conventionally adapted, full-time barns), and PART (part-time barns).
View Article and Find Full Text PDFEmerging Thrombotic Disorders Associated with Virus-Based Innovative Therapies: From VITT to AAV Gene Therapy-Related Thrombotic Microangiopathy.
Thromb Haemost
October 2024
Section of Internal and Cardiovascular Medicine, Department of Medicine, University of Perugia, Perugia, Italy.
Article Synopsis
- Thrombotic microangiopathy (TMA) has recently been linked to adeno-associated virus (AAV)-based gene therapy, characterized by serious blood clotting and low platelet levels, yet its causes and classification remain unclear.
- The review highlights the need for identifying TMA risk factors and discusses the need for safety improvements in AAV-based gene therapy, while also separating its mechanisms from similar conditions related to the adenovirus COVID-19 vaccine.
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