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Ameliorative effects of squid phospholipids from Todarodes pacificus on atopic dermatitis-like lesions in NC/Nga mice.
Arch Dermatol Res
January 2025
Faculty of Pharmacy, Iryo Sosei University, 5-5-1, Chuodai-Iino, Iwaki, Fukushima, 970-8551, Japan.
Atopic dermatitis (AD), also known as eczema, is a chronic or relapsing inflammatory skin disease characterized by repeated exacerbations and remissions. Here, we investigated the effects of squid phospholipids (PLs) extracted from Todarodes pacificus on AD. The composition of squid PLs was analyzed using thin-layer chromatography and high-performance liquid chromatography, and the effects of PLs on AD were investigated using a rat paw edema model and an AD-like mouse model (NC/Nga mice).
View Article and Find Full Text PDFRelevance of the Platelet-activating factor system in chemical warfare agents-induced effects.
Free Radic Biol Med
December 2024
Department of Pharmacology and Toxicology, Boonshoft School of Medicine Wright State University, Dayton, OH, 45435, USA. Electronic address:
The threats to chemical warfare-associated agents (CWA), including nitrogen mustard, are increasing, and no direct antidote is currently available to mitigate the deleterious cutaneous and systemic responses to prevent mortality. Though most of these agents act as alkylating agents, a significant knowledge gap exists in the molecular mechanisms of how these vesicants cause toxic effects. Studies, including ours, have shown that exposure to reactive oxygen species (ROS)-generating stimuli, including alkylating chemotherapeutic agents, and thermal burn injuries with ethanol produce the potent family of lipid mediators, Platelet-activating factor (PAF) agonists that induce local inflammation, and multi-system organ dysfunction (MOD).
View Article and Find Full Text PDFExploring the Effect of Resveratrol, Tyrosol, and Their Derivatives on Platelet-Activating Factor Biosynthesis in U937 Cells.
Molecules
November 2024
Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, 70 Eleftheriou Venizelou Avenue Kallithea, 17676 Athens, Greece.
Platelet-activating factor (PAF) is a potent lipid mediator, involved in thrombosis, inflammation, and atherosclerosis. The protective effect of wine and olive oil against atherosclerotic diseases is largely attributed to their phenolic compounds and mostly to resveratrol and tyrosol. Both compounds have been reported to inhibit PAF biosynthesis in interleukin-1β (IL-1β)-stimulated monocytes and also to attenuate PAF biosynthesis in cell lysates.
View Article and Find Full Text PDF[Platelet-activating Factor (PAF) in Urinary Bladder Smooth Muscle (UBSM): Its Novel Role as a Potential Inducer of Detrusor Overactivity and the Mechanisms Underlying Its Effects in Enhancing UBSM Mechanical Activities].
Yakugaku Zasshi
November 2024
Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Toho University.
Platelet-activating factor (PAF), a phospholipid mediator, was discovered in 1972 as an inducer of platelet aggregation. Subsequent studies have revealed that PAF has a variety of biological functions, such as its role as a potent proinflammatory mediator. Additionally, PAF regulates the contractile functions of various types of smooth muscle (SM), such as the (1) endothelium-dependent relaxation of vascular SM; (2) contraction and epithelium-dependent relaxation of airway SM; (3) contraction of gastrointestinal SM; and (4) contraction of uterine SM, which occurs more strongly in pregnant females.
View Article and Find Full Text PDFRe-Assessing the Role of Platelet Activating Factor and Its Inflammatory Signaling and Inhibitors in Cancer and Anti-Cancer Strategies.
Front Biosci (Landmark Ed)
September 2024
Laboratory of Biochemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece.
Since 2000s, we have outlined the multifaceted role of inflammation in several aspects of cancer, via specific inflammatory mediators, including the platelet activating factor (PAF) and PAF-receptor (PAFR) related signaling, which affect important inflammatory junctions and cellular interactions that are associated with tumor-related inflammatory manifestations. It is now well established that disease-related unresolved chronic inflammatory responses can promote carcinogenesis. At the same time, tumors themselves are able to promote their progression and metastasis, by triggering an inflammation-related vicious cycle, in which PAF and its signaling play crucial role(s), which usually conclude in tumor growth and angiogenesis.
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