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Alteration of the glycolipid binding specificity of the pig edema toxin from globotetraosyl to globotriaosyl ceramide alters in vivo tissue targetting and results in a verotoxin 1-like disease in pigs.
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All members of the verotoxin (VT) family specifically recognize globo-series glycolipids on the surface of susceptible cells. Those toxins that are associated with human disease, VT1, VT2, and VT2c, bind to globotriaosyl ceramide (Gb3) while VT2e, which is associated with edema disease of swine,
PAF-mediated pulmonary edema: a new role for acid sphingomyelinase and ceramide.
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Platelet-activating factor (PAF) induces pulmonary edema and has a key role in acute lung injury (ALI). Here we show that PAF induces pulmonary edema through two mechanisms: acid sphingomyelinase (ASM)-dependent production of ceramide, and activation of the cyclooxygenase pathway. Agents that
PAF, ceramide and pulmonary edema: alveolar flooding and a flood of questions.
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[Disseminated lipogranulomatosis (Farber disease) with hydrops fetalis].
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We report on a female preterm infant of 29 weeks' gestation with severe hydrops fetalis who died 3 days post natum as a result of disseminated intravascular coagulation. Autopsy findings included anasarca, bilateral pleural effusions, ascites and hepatosplenomegaly as well as multiple, up to pinhead
Ceramide-2 nanovesicles for effective transdermal delivery: development, characterization and pharmacokinetic evaluation.
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Abstract Context: The vesicles based on skin lipid have a drug localization effect and its main lipid, ceramide provides protective and regenerative effects while oleic acid (OA) is a penetration enhancer, however, it causes slight irritation, so we have formulated formulation incorporating both of
Inhibition of ceramide biosynthesis ameliorates pathological consequences of spinal cord injury.
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Ceramide is a sphingolipid signaling molecule with powerful proinflammatory and proapoptotic properties. The aim of this study was to investigate the role of altered ceramide metabolism in spinal cord injury. Spinal cord injury was induced by application of vascular clips (force of 24 g) to the dura
Development of fumonisin-induced hepatotoxicity and pulmonary edema in orally dosed swine: morphological and biochemical alterations.
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The fumonisin (FB) mycotoxins induce liver injury in all species but induce fatal pulmonary edema (PE) only in pigs. They inhibit ceramide synthase in the sphingolipid biosynthetic pathway. To study the pathogenesis of PE, we examined the early events in the development of FB-induced PE and
Goodpasture antigen-binding protein and its spliced variant, ceramide transfer protein, have different functions in the modulation of apoptosis during zebrafish development.
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Human Goodpasture antigen-binding protein (GPBP) is an atypical protein kinase that phosphorylates the Goodpasture auto-antigen, the alpha3 chain of collagen IV. The COL4A3BP gene is alternatively spliced producing two protein isoforms: GPBP and GPBPDelta26. The latter lacks a serine-rich domain
Vascular barrier regulation by PAF, ceramide, caveolae, and NO - an intricate signaling network with discrepant effects in the pulmonary and systemic vasculature.
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Increased endothelial permeability and vascular barrier failure are hallmarks of inflammatory responses in both the pulmonary and the systemic circulation. Platelet-activating factor (PAF) has been implicated as an important lipid mediator in the formation of pulmonary and extrapulmonary edema.
Mechanisms of lung endothelial barrier disruption induced by cigarette smoke: role of oxidative stress and ceramides.
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The epithelial and endothelial cells lining the alveolus form a barrier essential for the preservation of the lung respiratory function, which is, however, vulnerable to excessive oxidative, inflammatory, and apoptotic insults. Whereas profound breaches in this barrier function cause pulmonary
Staphylococcus aureus α-toxin disrupts endothelial tight junctions via acid sphingomyelinase and ceramide.
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Staphylococcus aureus (S. aureus) infections are among the most common and severe infections, garnering notoriety in an era of increasing resistance to antibiotics. It is therefore important to define molecular mechanisms by which this pathogen attacks host cells. Here, we demonstrate that
Ceramide alters endothelial cell permeability by a nonapoptotic mechanism.
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Ceramide is a lipid second messenger that was recently identified as mediator of pulmonary edema in vivo. Here, we investigated the effect of ceramide on the permeability of confluent endothelial cell monolayers. In monolayers of bovine pulmonary artery and human microvascular pulmonary endothelial
Ceramide-CD300f Binding Inhibits Lipopolysaccharide-induced Skin Inflammation.
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LPS triggers inflammatory responses; however, the negative regulation of LPS responses in vivo remains poorly understood. CD300f is an inhibitory receptor among the CD300 family of paired activating and inhibitory receptors. We have previously identified ceramide as a ligand for CD300f and shown
The kallikrein-kinin system in experimental Chagas disease: a paradigm to investigate the impact of inflammatory edema on GPCR-mediated pathways of host cell invasion by Trypanosoma cruzi.
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Chronic chagasic myocarditis (CCM) depends on Trypanosoma cruzi persistence in the myocardium. Studies of the proteolytic mechanisms governing host/parasite balance in peripheral sites of T. cruzi infection revealed that tissue culture trypomastigotes (TCTs) elicit inflammatory edema and stimulate
Inositol-trisphosphate reduces alveolar apoptosis and pulmonary edema in neonatal lung injury.
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D-myo-inositol-1,2,6-trisphosphate (IP3) is an isomer of the naturally occurring second messenger D-myo-inositol-1,4,5-trisphosphate, and exerts anti-inflammatory and antiedematous effects in the lung. Myo-inositol (Inos) is a component of IP3, and is thought to play an important role in the
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