Search results for "NF-KappaB Inhibitor alpha"

showing 5 items of 15 documents

Enzymatically hydrolyzed low-density lipoprotein modulates inflammatory responses in endothelial cells

2009

SummaryThere is evidence that low-density lipoprotein (LDL) is modified by hydrolytic enzymes,and that the product (E-LDL) induces selective production of interleukin 8 (IL-8) in endothelial cells. Since nuclear factor-kappaB (NF-κB) is a major regulator of IL-8 transcription, we studied its activation in endothelial cells treated with E-LDL. Unexpectedly,the modified lipoprotein not only failed to activate NF-κB, but completely blocked its activation by tumour necrosis factor-alpha (TNF-α) in EA.hy926-cells, as assessed by electrophoretic mobility shift assays and immunofluorescence. Inhibition occurred upstream of NF-κB translocation, as inhibitor of NF-κB- (IκB)-phosphorylation was suppr…

Time FactorsProto-Oncogene Proteins c-junPyridinesmedicine.medical_treatmentFatty Acids NonesterifiedBiologyp38 Mitogen-Activated Protein KinasesCell Linechemistry.chemical_compoundNF-KappaB Inhibitor alphamedicineHumansTrypsinInterleukin 8PhosphorylationPromoter Regions GeneticProtein Kinase InhibitorsTranscription factorInflammationTumor Necrosis Factor-alphaActivator (genetics)HydrolysisInterleukin-8ImidazolesTranscription Factor RelAEndothelial CellsNF-κBHematologySterol EsteraseMolecular biologyLipoproteins LDLTranscription Factor AP-1Endothelial stem cellCytokineBiochemistrychemistryLow-density lipoproteinI-kappa B ProteinsLipoproteinThrombosis and Haemostasis
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Heavy metal ion induction of adhesion molecules and cytokines in human endothelial cells: the role of NF-kappaB, I kappaB-alpha and AP-1.

1997

We analyzed the influence of heavy-metal ions on human umbilical vein endothelial cells (HUVEC) in comparison to proinflammatory cytokines (TNF-alpha, IL-1beta) and lipopolysaccharide (LPS). Adhesion molecule and cytokine expressions are upregulated by heavy-metal exposure. Expression of E-selectin on the cell surface was strongly induced by 1-mM concentrations of NiCl2 and CoCl2, whereas ZnCl2 and CrCl3 had no influence. Furthermore, it is shown that NiCl2 induces mRNA expression of E-selectin, intercellular adhesion molecule-1, IL-6 and IL-8 in a 1-mM concentration. The transcription factor NF-kappaB is known to be involved in the regulation of adhesion molecule expression in endothelial …

Umbilical VeinsLipopolysaccharideBlotting WesternUmbilical veinPathology and Forensic MedicineProinflammatory cytokineMetalchemistry.chemical_compoundNF-KappaB Inhibitor alphaMetals HeavyHumansRNA MessengerMolecular BiologyCells CulturedCell adhesion moleculeChemistrySingle-Strand Specific DNA and RNA EndonucleasesNF-kappa BNF-κBCell BiologyGeneral MedicineAdhesionBlotting NorthernMolecular biologyCell biologyUp-RegulationDNA-Binding ProteinsTranscription Factor AP-1Gene Expression Regulationvisual_artcardiovascular systemvisual_art.visual_art_mediumCytokinesTetradecanoylphorbol AcetateI-kappa B ProteinsEndothelium VascularSignal transductionDNA ProbesCell Adhesion MoleculesPathobiology : journal of immunopathology, molecular and cellular biology
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Synergistic effects of fluticasone propionate and salmeterol on in vitro T-cell activation and apoptosis in asthma

2004

Background In asthma T cells are characterized by an increased activation state and by reduced apoptosis. Objective Because the clinical efficacy of inhaled corticosteroids combined with long-acting β 2 -agonists has been widely demonstrated in asthma, we studied, in vitro , the effect of fluticasone propionate (FP) and salmeterol alone and in combination on the activation and apoptosis of peripheral blood T cells (PBTs), on the expression of phosphorylated nuclear factor κB inhibitor (IκBα), and on the nuclear translocation of glucocorticoid receptor (GR) in PBTs from asthmatic subjects. Methods Apoptosis was evaluated on the basis of annexin V binding, whereas the expression of caspases 8…

medicine.medical_specialtyProgrammed cell deathAdolescentT cellT-LymphocytesImmunologyActive Transport Cell NucleusApoptosisAndrostadienes; Active Transport Cell Nucleus; NF-kappa B; Apoptosis; Humans; Albuterol; Receptors Glucocorticoid; Asthma; Child; Caspases; Lymphocyte Activation; Phosphorylation; I-kappa B Proteins; Adolescent; Drug Synergism; T-LymphocytesLymphocyte ActivationGlucocorticoid receptorReceptors GlucocorticoidNF-KappaB Inhibitor alphaAnnexinInternal medicinemedicineHumansImmunology and AllergyAlbuterolPhosphorylationChildSalmeterol XinafoateAndrostadieneChemistryActive Transport Cell NucleuNF-kappa BApoptosiDrug SynergismCaspaseAsthmaAndrostadienesIκBαEndocrinologymedicine.anatomical_structureApoptosisCaspasesFluticasoneI-kappa B ProteinI-kappa B ProteinsSalmeterolGlucocorticoidmedicine.drugHuman
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Inhibition of the NF-κB Signaling Pathway Mediates the Anti-inflammatory Effects of Petrosaspongiolide M

2003

Petrosaspongiolide M (PT) is a potent secretory phospholipase A(2) inhibitor and anti-inflammatory agent. This marine metabolite reduced the production of nitrite, prostaglandin E(2), and tumor necrosis factor-alpha in the mouse air pouch injected with zymosan. These effects were also observed in mouse peritoneal macrophages stimulated with zymosan. Inhibition of these inflammatory mediators was related to reductions in inducible nitric oxide synthase, cyclo-oxygenase-2, and tumor necrosis factor-alpha expression. Since nuclear factor-kappaB (NF-kappaB) appears to play a central role in the transcriptional regulation of these proteins by macrophages, we investigated the effects of PT on thi…

medicine.medical_treatmentAnti-Inflammatory AgentsNitric Oxide Synthase Type IIBiochemistryDinoprostoneMicechemistry.chemical_compoundPhospholipase A2NF-KappaB Inhibitor alphaCell MovementmedicineAnimalsRNA MessengerOleanolic AcidPhosphorylationNitritesPharmacologybiologyTumor Necrosis Factor-alphaZymosanNF-kappa BZymosanBiological TransportNF-κBDNACell biologyIsoenzymesNitric oxide synthaseIκBαCytokinechemistryBiochemistryCyclooxygenase 2Prostaglandin-Endoperoxide SynthasesModels AnimalMacrophages Peritonealbiology.proteinCytokinesI-kappa B ProteinsTumor necrosis factor alphaNitric Oxide SynthaseSignal TransductionProstaglandin E
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Rho GTPases Are Involved in the Regulation of NF-κB by Genotoxic Stress

2001

A common cellular response to genotoxic agents and inflammatory cytokines is the activation of NF-kappaB. Here, we addressed the question of whether small GTPases of the Rho family are involved in the stimulation of NF-kappaB signaling by genotoxic agents or TNFalpha in HeLa cells. Inhibition of isoprenylation of Rho proteins by use of the HMG-CoA reductase inhibitor lovastatin attenuated UV-, doxorubicin-, and TNFalpha-induced degradation of IkappaBalpha as well as drug-stimulated DNA binding activity of NF-kappaB. Furthermore, NF-kappaB-regulated gene expression stimulated by either UV irradiation or treatment with TNFalpha was abrogated by lovastatin pretreatment. This indicates that iso…

rho GTP-Binding ProteinsBacterial ToxinsClostridium difficile toxin BGenotoxic StressGTPaseBiologyProinflammatory cytokinechemistry.chemical_compoundBacterial ProteinsNF-KappaB Inhibitor alphamedicineHumansLovastatinTumor Necrosis Factor-alphaNF-kappa BNF-kappa B p50 SubunitNF-κBCell BiologyCell biologyDNA-Binding ProteinsIκBαchemistryDoxorubicinI-kappa B ProteinsTumor necrosis factor alphaLovastatinHeLa CellsSignal Transductionmedicine.drugExperimental Cell Research
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