lipoxygenase/inflammation

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The 5-lipoxygenase pathway: oxidative and inflammatory contributions to the Alzheimer's disease phenotype.

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Alzheimer's disease (AD) is the most common, and, arguably, one of the most-well studied, neurodegenerative conditions. Several decades of investigation have revealed that amyloid-β and tau proteins are critical pathological players in this condition. Genetic analyses have revealed specific

Pharmacology of PF-4191834, a novel, selective non-redox 5-lipoxygenase inhibitor effective in inflammation and pain.

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5-Lipoxygenase (LOX) is an important arachidonic acid-metabolizing enzyme producing leukotrienes and other proinflammatory lipid mediators with potent pathophysiological functions in asthma and other inflammatory diseases.

Synthesis of celecoxib analogs that possess a N-hydroxypyrid-2(1H)one 5-lipoxygenase pharmacophore: biological evaluation as dual inhibitors of cyclooxygenases and 5-lipoxygenase with anti-inflammatory activity.

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A hitherto unknown class of celecoxib analogs was designed for evaluation as dual inhibitors of the 5-lipoxygenase/cyclooxygenase-2 (5-LOX/COX-2) enzymes. These compounds possess a SO(2)Me (11a), or SO(2)NH(2) (11b) COX-2 pharmacophore at the para-position of the N(1)-phenyl ring in conjunction with

12/15-Lipoxygenase choreographs the resolution of IgG-mediated skin inflammation

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Autoimmune diseases are defined by an immune response against a specific autoantigen, driven by antigen-specific T cells or antibodies. While the mechanisms resolving brief episodes of acute inflammation elicited by microbial components or tissue injury are well understood, the mechanisms resolving

The effects of a novel series of selective inhibitors of arachidonate 5-lipoxygenase on anaphylactic and inflammatory responses.

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In conclusion, we have described a novel series of acetohydroxamic acids that are potent and selective inhibitors of arachidonate 5-lipoxygenase in vitro and in vivo. In addition, we have shown that these compounds attenuate "leukotriene-dependent" anaphylactic bronchospasm, the accumulation of

The modulation of peritoneal macrophage chemiluminescence by acute pleural inflammation, prostanoids and cyclo/lipoxygenase inhibitors.

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The chemiluminescent (CL) response of peritoneal macrophages was suppressed by induction 4 h earlier of an inflammatory reaction in the pleural cavity which was negated by prior administration of indomethacin, ketoprofen and BW 755C. These changes were accompanied by a concomitant rise in peritoneal

Effect of 5-lipoxygenase inhibition on bronchoconstriction and airway inflammation in nocturnal asthma.

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To investigate the contribution of leukotrienes (LTs) to inflammation and bronchoconstriction in nocturnal asthma, we performed a randomized trial in 12 asthmatic patients and 6 normal control subjects. This study involved pulmonary function testing, methacholine challenge, bronchoscopy for cell

5-lipoxygenase is a key determinant of acute myocardial inflammation and mortality during Trypanosoma cruzi infection.

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This study provides evidence supporting the idea that although inflammatory cells migration to the cardiac tissue is necessary to control the growth of Trypanosoma cruzi, the excessive influx of such cells during acute myocarditis may be deleterious to the host. Production of lipid mediators of

Sulphasalazine fails to prevent development of mucosal ulceration and 5-lipoxygenase activity in guinea-pigs with chronic inflammatory bowel disease induced by combined bacterial immunization and oral carrageenin.

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A model of inflammatory bowel disease in guinea-pigs involving a 14 day initial treatment with formalin-killed Bacteroides vulgatus subcutaneously and oral carrageenin plus live B. vulgatus for 10 days was used to determine the effects of sulphasalazine 100 mg kg-1 day-1 b.i.d., p.o. given for 4, 7

The inhibition of 5-lipoxygenase (5-LO) products leukotriene B4 (LTB4) and cysteinyl leukotrienes (cysLTs) modulates the inflammatory response and improves cutaneous wound healing.

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To analyze the participation of the enzyme 5-lipoxygenase (5-LO) in skin repair, WT wounds were compared to those in 5-LO deficient mice (5-LO-/-), which presented faster closure and reduced inflammatory infiltrate in the skin, together with increased CD4 regulatory T cells markers in the draining

Contributory role of 5-lipoxygenase and its association with angiogenesis in the promotion of inflammation-associated colonic tumorigenesis by cigarette smoking.

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Our previous study shows that cigarette smoking can promote inflammation-associated adenoma formation in the mouse colon, but the underlying mechanism remains unknown. Several studies suggest that there is a link between 5-lipoxygenase (5-LOX) and carcinogenesis in humans and animals. In the present

The effect of leukotriene D(4) inhalation on the antigen-induced airway hyperresponsiveness and inflammation in 5-lipoxygenase gene-deficient mice.

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BACKGROUND The role of 5-lipoxygenase (5-LO) products in the asthmatic bronchoconstriction is evident. However, the role of 5-LO products in airway hyperresponsiveness (AHR) and airway inflammation is still under discussion. The aim of the present study is to investigate the role of leukotriene D(4)

12-Lipoxygenase-knockout mice are resistant to inflammatory effects of obesity induced by Western diet.

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Inflammation is a key pathological process in the progression of atherosclerosis and type 2 diabetes. 12/15-lipoxygenase (12-LO), an enzyme involved in fatty acid metabolism, may contribute to inflammatory damage triggered by stressors such as obesity and insulin resistance. We hypothesized that

Viral vector-mediated 12/15-lipoxygenase overexpression in vascular smooth muscle cells enhances inflammatory gene expression and migration.

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Increased expression and activity of 12/15-lipoxygenase (12/15-LO) in vascular smooth muscle cells (VSMCs) play a key role in the pathogenesis of diabetes and vascular complications. However, the consequences of 12/15-LO overexpression for VSMC migration and inflammatory gene expression are not

Expression of 5-lipoxygenase mRNA is unchanged in the colon of patients with active inflammatory bowel disease.

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BACKGROUND In inflammatory bowel disease (IBD) the disease activity correlates with colonic concentrations of leukotrienes (LTs). The enzyme 5-lipoxygenase (5-LO) is responsible for the enzymatic production of LTs. It has previously been demonstrated in experimental models of inflammation, that 5-LO

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