Results 11 to 20 of about 256,558 (340)

A Review of Platelet-Activating Factor As a Potential Contributor to Morbidity and Mortality Associated with Severe COVID-19

Clinical and Applied Thrombosis/Hemostasis, 2021
The precise mechanisms of pathology in severe COVID-19 remains elusive. Current evidence suggests that inflammatory mediators are responsible for the manifestation of clinical symptoms that precedes a fatal response to infection. This review examines the
Mark Klein MD, Vinh Dao PharmD, BCPS, Fatima Khan MD, MPH   +2 more
doaj   +1 more source

Platelet activating factor receptor antagonists improve the efficacy of experimental chemo- and radiotherapy

Clinics, 2018
Platelet activating factor is a lipid mediator of inflammation, and in recent decades, it has emerged as an important factor in tumor outcomes. Platelet activating factor acts by specific binding to its receptor, which is present in both tumor cells and ...
Ildefonso Alves da Silva Junior, Luciana Nogueira de Sousa Andrade, Sonia Jancar, Roger Chammas   +3 more
doaj   +1 more source

Effect of montelukast on platelet activating factor- and tachykinin induced mucus secretion in the rat

Journal of Occupational Medicine and Toxicology, 2008
Background Platelet activating factor and tachykinins (substance P, neurokinin A, neurokinin B) are important mediators contributing to increased airway secretion in the context of different types of respiratory diseases including acute and chronic ...
Groneberg David A, Staats Petra, Schmidt Rene, Wagner Ulrich   +3 more
doaj   +1 more source

Score predictor factor analysis: Reproducing observed covariances by means of factor score predictors [PDF]

Front. Psychol. 10:1895 (2019), 2019
The model implied by factor score predictors does not reproduce the non-diagonal elements of the observed covariance matrix as well as the factor loadings. It is therefore investigated whether it is possible to estimate factor loadings for which the model implied by the factor score predictors optimally reproduces the non-diagonal elements of the ...
arxiv   +1 more source

Lipopolysaccharide induces nitric oxide synthase expression and platelet-activating factor increases nitric oxide production in human fetal membranes in culture

Reproductive Biology and Endocrinology, 2004
Background Platelet-activating factor and nitric oxide may be involved in the initiation of human labour as inflammatory mediators. The aim of this study was to test whether platelet-activating factor and lipopolysaccharide were able to induce nitric ...
Seyffarth Gunter, Nelson Paul N, Dunmore Simon J, Rodrigo Nalinda, Murphy Damian J, Carson Ray J   +5 more
doaj   +1 more source

Opposing Effects of Platelet-Activating Factor and Lyso-Platelet-Activating Factor on Neutrophil and Platelet Activation

Molecular Pharmacology, 2009
Platelet-activating factor (PAF) is a potent, bioactive phospholipid that acts on multiple cells and tissues through its G protein-coupled receptor (GPCR). PAF is not stored but is rapidly generated via enzymatic acetylation of the precursor 1-O-hexadecyl-2-hydroxy-sn-glycero-3-phosphocholine (lysoPAF). The bioactivity of PAF is effectively and tightly
Zhenyu Li, Chinnaswamy Tiruppathi, Emily J. Welch, Takao Shimizu, Papasani V. Subbaiah, Phoebe Lin, Xiaoping Du, Ram P. Naikawadi, Richard D. Ye, Satoshi Ishii   +9 more
openaire   +4 more sources

The trade-off between factor score determinacy and the preservation of inter-factor correlations [PDF]

arXiv, 2023
Regression factor score predictors have the maximum factor score determinacy, i.e., the maximum correlation with the corresponding factor, but they do not have the same inter-correlations as the factors. As it might be useful to compute factor score predictors that have the same inter-correlations as the factors, correlation-preserving factor score ...
arxiv  

Interplay Between EGFR and the Platelet-Activating Factor/PAF Receptor Signaling Axis Mediates Aggressive Behavior of Cervical Cancer

Frontiers in Oncology, 2020
Epidermal growth factor receptor (EGFR) is a receptor tyrosine kinase widely expressed in cervical tumors, being correlated with adverse clinical outcomes. EGFR may be activated by a diversity of mechanisms, including transactivation by G-protein coupled
Juliana L. Souza, Karina Martins-Cardoso, Isabella S. Guimarães, Andréia C. de Melo, Angela H. Lopes, Robson Q. Monteiro, Vitor H. Almeida   +6 more
doaj   +1 more source

Platelet-Activating Factor Induces Th17 Cell Differentiation

Mediators of Inflammation, 2011
Th17 cells have been implicated in a number of inflammatory and autoimmune diseases. The phospholipid mediator platelet-activating factor (PAF) is found in increased concentrations in inflammatory lesions and has been shown to induce IL-6 production.
Anne-Marie Drolet, Maryse Thivierge, Sylvie Turcotte, Dominique Hanna, Bruno Maynard, Jana Stankovà, Marek Rola-Pleszczynski   +6 more
doaj   +1 more source

Design, Synthesis and Anti-Platelet Aggregation Activity Study of Ginkgolide-1,2,3-triazole Derivatives

Molecules, 2019
Ginkgolides are the major active component of Ginkgo biloba for inhibition of platelet activating factor receptor. An azide-alkyne Huisgen cycloaddition reaction was used to introduce a triazole nucleus into the target ginkgolide molecules.
Jian Cui, Le’An Hu, Wei Shi, Guozhen Cui, Xumu Zhang, Qing-Wen Zhang   +5 more
doaj   +1 more source