Leukotriene B4
Leukotriene B4 activates intracellular calcium and augments human osteoclastogenesis
... the leukotriene biosynthesis cascade. Leukotrienes consist of leukotriene B4 (LTB4) and the cysteinyl leukotrienes: namely, leukotriene C4 (LTC4), leukotriene D4 (LTD4) and ...
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The Comparison of the Levels of Leukotriene B4, TGF β1, Collagen in Keloid Fibroblasts and Normal Skin Fibroblast
... [26]. Leukotriene B4 isa potent lipid mediator produced by the activation of neutrophil, macrophage, mast cells and it is chemoattractant, in this case as fibroblast chemotaxis ...[16]. Leukotriene ...
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A remarkable Activity of Steroid Biosynthesis in Captopril Preserved Leydig Cells of Mice Implicated Leukotriene B4 and Gonadotropin Releasing Hormones in vitro
... GnRH, leukotriene B4, and LH at doses of 70 µM, ...plus leukotriene B4 (MCL); Medium plus captopril plus LH (MCLH); Medium plus captopril plus GnRH (MCG); Medium plus GnRH plus ...
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Remodeling of neutrophil phospholipids with 15(S) hydroxyeicosatetraenoic acid inhibits leukotriene B4 induced neutrophil migration across endothelium
... present evidence that remodeling of PMN phospholipids with 15(S)-HETE stereoselectively inhibits PMN migration across endothelium in response to leukotriene B4 (LTB4) and other chemoattractants. Esterified ...
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Mechanism of action of glucocorticosteroids Inhibition of T cell proliferation and interleukin 2 production by hydrocortisone is reversed by leukotriene B4
... The mechanism whereby glucocorticosteroids are immunosuppressive is unknown. One potential mechanism of action of these compounds is inhibition of arachidonic acid metabolism. We found that the inhibition of lymphocyte ...
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Leukotriene B4 omega hydroxylase in human polymorphonuclear leukocytes Partial purification and identification as a cytochrome P 450
... Human polymorphonuclear leukocytes (PMN) not only synthesize and respond to leukotriene B4 (LTB4), but also catabolize this mediator of inflammation rapidly and specifically by omega-oxidation. To ...
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Effects of leukotriene B4 in the human lung Recruitment of neutrophils into the alveolar spaces without a change in protein permeability
... Leukotriene B4 (LTB4) is a major product of human alveolar macrophages and has potent chemotactic activity for neutrophils (PMN) in vitro. To evaluate the effects of LTB4 in the normal human lung, we ...
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Neutrophil accumulation in the lung in alpha 1 antitrypsin deficiency Spontaneous release of leukotriene B4 by alveolar macrophages
... radioimmunoassay, and absorption with anti-LTB4 antibody revealed that the majority of the chemotactic activity was leukotriene B4 (LTB4), a mediator absent from normal macrophage supernates. Consistent ...
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Macrophages cultured in vitro release leukotriene B4 and neutrophil attractant/activation protein (interleukin 8) sequentially in response to stimulation with lipopolysaccharide and zymosan
... (NCA), leukotriene B4 (LTB4), and neutrophil attractant/activation protein (NAP-1) release from human alveolar macrophages (AM) retrieved from normal nonsmokers was ...
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Bacterial lipopolysaccharides prime human neutrophils for enhanced production of leukotriene B4
... Neutrophils can be "primed" for an enhanced respiratory burst by lipopolysaccharide (LPS) in concentrations measurable in patients with septic shock. Leukotriene B4 (LTB4) is the primary eicosanoid ...
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Leukotriene B4 stimulates polymorphonuclear leukocyte adhesion to cultured vascular endothelial cells
... Our results indicated that leukotriene B4 LTB4 could effectively stimulate PMN adhesion to endothelial cell surfaces, in contrast to the sulfidopeptide leukotrienes C4, D4, and E4, and t[r] ...
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Relative contribution of leukotriene B4 to the neutrophil chemotactic activity produced by the resident human alveolar macrophage
... of leukotriene B4 (LTB4), a chemotactically active lipoxygenase product of arachidonic acid, we investigated the contribution of LTB4 to the total neutrophil chemotactic activity produced by these ...
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Excessive localized leukotriene B4 levels dictate poor skin host defense in diabetic mice
... infection, leukotriene B 4 (LTB 4 ) is produced within seconds to minutes via arachidonic acid metabolism by 5-lipoxygenase (5-LO) to LTA 4 , which is further metabolized by the LTA 4 hydrolase (LTA4H) to LTB 4 ...
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Inhibition of the Histamine and Leukotriene B4 Release From Rat Peritoneal Exudate Cells By Six Bangladeshi Plants
... Bangladesh has the largest mangrove forests in the world which has been a vast source of bioactive compounds. Mangrove plants have been used in traditional folk medicines and extracts from mangrove species are widely ...
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Recombinant interferon gamma primes alveolar macrophages cultured in vitro for the release of leukotriene B4 in response to IgG stimulation
... To assess the specificity of the effect of IF-y on macrophage release of LTB4 in response to HAIgG, paired experiments were performed in which macrophages were incubated alone or with 1,[r] ...
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Leukotriene B4 receptor transgenic mice reveal novel protective roles for lipoxins and aspirin triggered lipoxins in reperfusion
... Polymorphonuclear neutrophil (PMN) activation is pivotal in acute inflammation and injury from reperfusion. To elucidate components controlling PMNs in vivo, we prepared novel transgenic mice with the human ...
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Leukotriene B4, administered via intracerebroventricular injection, attenuates the antigen-induced asthmatic response in sensitized guinea pigs
... Studies of allergen-induced airway hyperresponsiveness and inflammation in BLT1 -/- mice have shown crucial new roles for LTB 4 and BLT1 in Th2 cytokine IL-13 production from lung Th cel[r] ...
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Human-specific epigenetic variation in the immunological Leukotriene B4 Receptor (LTB4R/BLT1) implicated in common inflammatory diseases
... Chi-squared calculations for enrichment for hypomethylated s-DMRs, were compared with the combined chimpanzee and rhesus macaque peak set (94,799 peaks) and those for hypermethylated s-D[r] ...
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Kinetics of Serum and Local Leukotriene B4 Response in Experimental Intravaginal Trichomoniasis by T vaginalis Isolates from Symptomatic and Asymptomatic Women
... Significant increase in mean of LTB4 levels was observed on the 3rd to 28th PI in serum, VWs and vaginal tissue of mice infected with SYM GIb in comparison to mice infected with ASYM GII[r] ...
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Intravenous infusion of tridocosahexaenoyl glycerol emulsion into rabbits Effects on leukotriene B4/5 production and fatty acid composition of plasma and leukocytes
... Changes in Plasma Lipid Concentrations and in Fatty Acid Composition of Plasma Lipids in Rabbits Infused with Soybean Oil Emulsion Plasma lipid fractions TG.. Lipid concentrations mM 0h [r] ...
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