Results 41 to 50 of about 11,617 (181)

Dilution‐Endpoint Comparison of a Flow Cytometric Platelet Activation Assay With PF4/Heparin ELISA and a Lateral Flow Immunoassay in Suspected HIT

International Journal of Laboratory Hematology, EarlyView.
ABSTRACT Introduction Heparin‐induced thrombocytopenia (HIT) is a rare but potentially life‐threatening, immune‐mediated adverse reaction to heparin. PF4‐dependent immunoassays are sensitive screening tests, but they detect both platelet‐activating and nonactivating antibodies; therefore, positive results require interpretation in clinical context and,
Elvira Maličev, Matjaž Urbajs, Katerina Jazbec Gradišar, Ana Kolenc, Primož Rožman   +4 more
wiley   +1 more source

Decreased serum PF4 levels correlate with cognitive decline and CSF biomarkers in Alzheimer's disease in a Chinese cohort

Experimental Gerontology
Background: Platelet factor 4 (PF4), a chemotactic factor secreted from the α-granules of platelets, has recently been proved to mitigate neuroinflammation and improve aging-related cognition decline, which may be involved in Alzheimer's disease (AD ...
Hao Sun, Dong-Wan Chen, Yuan-Ye Ma, Bai Liu, Jun Wang, Yu-Jie Lai, Gui-Hua Zeng, Ying-Ying Shen, Cheng-Rong Tan, Xian-Le Bu, Fan Zeng, Yan-Jiang Wang   +11 more
doaj   +1 more source

“Inactivating” PF4: a new approach to HIT treatment? [PDF]

Blood, 2012
Current methods of treating heparin-induced thrombocytopenia (HIT) focus on treatment and prevention of thrombotic complications. In this issue of Blood, Sachais et al describe a novel therapeutic approach: pharmacologic disruption of PF4 tetramers essential for formation of immune complexes that are central to the pathogenesis.
openaire   +2 more sources

Blood Cell Counts and the Duffy Null Phenotype: Beyond Neutropenia

International Journal of Laboratory Hematology, EarlyView.
ABSTRACT The absence of Duffy antigen expression on red blood cells, caused by a single nucleotide polymorphism in the DARC/ACKR1 gene, confers protection against malaria and is associated with lower absolute neutrophil counts (ANC) in some studied populations.
Elvira Deolinda R. P. Velloso, Andreza Oliveira dos Santos, Carla Luana Dinardo, Carolina Bonet Bub, Leandro Dinalli Santos, Mauren Fernanda Moller dos Santos, João Carlos de Campos Guerra, Denise dos Anjos Laurentis de Sousa Campos, Monica Juliana Vieira, Fábio Julio da Luz, Alfredo Mendrone‐Junior, Rosana M. Cosentino Penteado   +11 more
wiley   +1 more source

Recombinant Anti-PF4 Antibodies Derived from Patients with Vaccine-Induced Immune Thrombocytopenia and Thrombosis (VITT) Facilitate Research and Laboratory Diagnosis of VITT

Vaccines
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).
Luisa Müller, Venkata A. S. Dabbiru, Lucy Rutten, Rinke Bos, Roland Zahn, Stefan Handtke, Thomas Thiele, Marta Palicio, Olga Esteban, Marta Broto, Tom Paul Gordon, Andreas Greinacher, Jing Jing Wang, Linda Schönborn   +13 more
doaj   +1 more source

Functional Assessment of Platelet‐Derived Phospholipid Activity in Pooled Normal Plasmas by Low‐Phospholipid Thrombin Generation Assay and Its Impact on Lupus Anticoagulant Mixing Tests

International Journal of Laboratory Hematology, EarlyView.
ABSTRACT Background Pooled normal plasma (PNP) used for lupus anticoagulant (LA) mixing tests may carry platelet‐derived phospholipid (PL) activity introduced during freezing/lyophilization, potentially attenuating LA‐mediated prolongation of clotting times.
Osamu Kumano, Masato Matsuda, Mino Sakata, Osamu Maruyama   +3 more
wiley   +1 more source

Genetic Susceptibility to Periodontitis

Journal of Periodontal Research, EarlyView.
Aim: The aim of this narrative review was to identify genes carrying risk alleles associated with an increased risk of periodontitis and to place them in a biological context. Methods: The literature was reviewed based on predefined criteria. Results: The identified genes largely fall into functions linking immune response with tissue repair. The genes
Gesa M. Richter, Arne S. Schaefer
wiley   +1 more source

Understanding mechanisms of thrombosis and thrombocytopenia with adenoviral SARS-CoV-2 vaccines: a comprehensive synopsis

Efficacy and Mechanism Evaluation
Background Thrombosis with thrombocytopenia syndrome is a rare condition known to occur spontaneously or after heparin use. With the advent of COVID-19 vaccines during the pandemic, thrombosis with thrombocytopenia syndrome cases emerged post ...
Phillip LR Nicolson, Simon T Abrams, Gayatri Amirthalingam, Kevin Brown, Richard J Buka, Mark J Caulfield, Joshua Gardner, David Goldblatt, Charlotte Lovatt, Samantha J Montague, Dean J Naisbitt, Alan Parker, Sue Pavord, Mary E Ramsay, Jonathan AC Sterne, Cathie LM Sudlow, Cheng Hock Toh, Steve P Watson, Guozheng Wang, Angela M Wood, William Whiteley, Munir Pirmohamed   +21 more
doaj   +1 more source

Platelet Factor 4: A Novel Therapeutic Inhibitor for Experimental Neovascular Age-Related Macular Degeneration

Frontiers in Bioscience-Landmark
Background: Platelet factor 4 (PF4/CXCL4) is a chemokine with reported anti-angiogenic and immunomodulatory properties; however, the role of PF4 in neovascular age-related macular degeneration (nAMD) remains unclear.
Xiubin Ke, Shuqi Liang, Tianhao Qu, Shenyu Li, Ji Lei, Han Han, Yingying Guo, Man Xing, Xiaohong Wang, Shikun He, Mengyu Liao, Dongming Zhou, Hua Yan   +12 more
doaj   +1 more source

Prevalence of thrombocytopenia, anti–platelet factor 4 antibodies and D‐dimer elevation in Thai people After ChAdOx1 nCoV‐19 vaccination

Research and Practice in Thrombosis and Haemostasis, 2021
Background Vaccine‐induced immune thrombotic thrombocytopenia (VITT) is a rare distinctive syndrome characterized by unusual site thrombosis accompanied by thrombocytopenia after ChAdOx1 nCoV‐19 vaccination.
Noppacharn Uaprasert, Phandee Watanaboonyongcharoen, Rattaporn Vichitratchaneekorn, Sasinipa Trithiphen, Benjaporn Akkawat, Autcharaporn Sukperm, Thanisa Tongbai, Watsamon Jantarabenjakul, Leilani Paitoonpong, Ponlapat Rojnuckarin   +9 more
doaj   +1 more source