Search results for " toll-like receptor 4"

showing 5 items of 5 documents

Immune Cell Toll-like Receptor 4 Mediates the Development of Obesity- and Endotoxemia-Associated Adipose Tissue Fibrosis

2014

International audience; Adipose tissue fibrosis development blocks adipocyte hypertrophy and favors ectopic lipid accumulation. Here, we show that adipose tissue fibrosis is associated with obesity and insulin resistance in humans and mice. Kinetic studies in C3H mice fed a high-fat diet show activation of macrophages and progression of fibrosis along with adipocyte metabolic dysfunction and death. Adipose tissue fibrosis is attenuated by macrophage depletion. Impairment of Toll-like receptor 4 signaling protects mice from obesity-induced fibrosis. The presence of a functional Toll-like receptor 4 on adipose tissue hematopoietic cells is necessary for the initiation of adipose tissue fibros…

LipopolysaccharidesMESH: Signal TransductionMESH: InflammationMESH : Toll-Like Receptor 4Adipose tissueMESH : AdipocytesMESH : LipopolysaccharidesMicechemistry.chemical_compoundFibrosisAdipocyteAdipocytes[ SDV.IMM ] Life Sciences [q-bio]/ImmunologyMESH: ObesityMESH: Animalslcsh:QH301-705.5Mice Inbred C3HToll-like receptorMESH : Diet High-FatMESH: Toll-Like Receptor 43. Good healthMESH: Insulin ResistanceAdipose TissueMESH: FibrosisMESH : Fibrosis[SDV.IMM]Life Sciences [q-bio]/ImmunologyMESH : ObesityMESH : Insulin ResistanceMESH: Adipose TissueSignal Transductionmedicine.medical_specialty[SDV.IMM] Life Sciences [q-bio]/ImmunologyAdipose tissue macrophagesBiologyDiet High-FatMESH : Adipose TissueGeneral Biochemistry Genetics and Molecular BiologyImmune systemMESH : Mice Inbred C3HInternal medicineMESH : MicemedicineAnimalsHumansObesityMESH: Mice Inbred C3HMESH: MiceMESH: AdipocytesInflammationMESH : Signal TransductionMESH : InflammationMESH: HumansMESH : EndotoxemiaMESH : Humans3T3-L1medicine.diseaseFibrosisMESH : Disease Models AnimalEndotoxemiaToll-Like Receptor 4Disease Models AnimalMESH: Diet High-FatEndocrinologylcsh:Biology (General)chemistryMESH: EndotoxemiaMESH : AnimalsInsulin ResistanceMESH: Disease Models AnimalMESH: LipopolysaccharidesAdipocyte hypertrophyCell Reports
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Budesonide increases TLR4 and TLR2 expression in Treg lymphocytes of allergic asthmatics

2015

Abstract Background Reduced innate immunity responses as well as reduced T regulatory activities characterise bronchial asthma. Objectives In this study the effect of budesonide on the expression of TLR4 and TLR2 in T regulatory lymphocyte sub-population was assessed. Methods TLR4 and TLR2 expression in total peripheral blood mononuclear cells (PBMC), in CD4+/CD25+ and in CD4+/CD25− was evaluated, by flow cytometric analysis, in mild intermittent asthmatics (n = 14) and in controls (n = 11). The in vitro effects of budesonide in modulating: TLR4 and TLR2 expression in controls and in asthmatics; IL-10 expression and cytokine release (IL-6 and TNF-α selected by a multiplex assay) in asthmati…

AdultMalePulmonary and Respiratory MedicineBudesonidemedicine.medical_treatmentLymphocyteIn Vitro TechniquesCorticosteroids; Immunoregulation; T lymphocytes; TLR; Adult; Asthma; Budesonide; Cytokines; Female; Flow Cytometry; Glucocorticoids; Humans; In Vitro Techniques; Interleukin-10; Leukocytes Mononuclear; Male; T-Lymphocytes Regulatory; Toll-Like Receptor 2; Toll-Like Receptor 4; Young Adult; Pulmonary and Respiratory Medicine; Pharmacology (medical); Biochemistry (medical); Medicine (all)T-Lymphocytes RegulatoryPeripheral blood mononuclear cellYoung AdultGlucocorticoidTLRT lymphocytemedicineCorticosteroidHumansPharmacology (medical)IL-2 receptorBudesonideCytokineGlucocorticoidsIn Vitro Techniquebusiness.industryMedicine (all)Biochemistry (medical)ImmunoregulationFlow CytometryAsthmaToll-Like Receptor 2Interleukin-10Toll-Like Receptor 4Interleukin 10TLR2Cytokinemedicine.anatomical_structureImmunologyLeukocytes MononuclearTLR4CytokinesFemalebusinessHumanmedicine.drugPulmonary Pharmacology & Therapeutics
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Toll-like receptor-4 signaling pathway in aorta aging and diseases: “its double nature”

2017

Recent advances in the field of innate immunity have revealed a complex role of innate immune signaling pathways in both tissue homeostasis and disease. Among them, the Toll-like receptor 4 (TLR-4) pathways has been linked to various pathophysiological conditions, such as cardiovascular diseases (CVDs). This has been interrogated by developing multiple laboratory tools that have shown in animal models and clinical conditions, the involvement of the TLR-4 signaling pathway in the pathophysiology of different CVDs, such as atherosclerosis, ischemic heart disease, heart failure, ischemia-reperfusion injury and aorta aneurysm. Among these, aorta aneurysm, a very complex pathological condition w…

0301 basic medicinePathologymedicine.medical_specialtyAgingDisease030204 cardiovascular system & hematologyBioinformatics03 medical and health sciences0302 clinical medicineAneurysmAorta; Aorta aneurysms; TLR-4 signaling pathway; Treatments; Aging; Animals; Aorta; Cardiovascular Diseases; Homeostasis; Humans; Toll-Like Receptor 4; Signal TransductionAorta aneurysmsmedicine.arterymedicineSettore MED/05 - Patologia ClinicaAnimalsHomeostasisHumansMolecular BiologyTissue homeostasisAortaToll-like receptorAortaAorta; Aorta aneurysms; TLR-4 signaling pathway; TreatmentsInnate immune systembusiness.industryTreatmentsTLR-4 signaling pathwaySettore MED/23 - Chirurgia Cardiacamedicine.diseaseToll-Like Receptor 4030104 developmental biologyCardiovascular DiseasesHeart failurecardiovascular systemAorta aneurysmSignal transductionCardiology and Cardiovascular MedicinebusinessSignal Transduction
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Enhanced proinflammatory response to the Candida albicans gpi7 null mutant by murine cells.

2008

International audience; The Candida albicans gpi7/gpi7 null mutant strain (Deltagpi7), which is affected in glycosylphosphatidylinositol (GPI) anchor biosynthesis, showed a reduced virulence following systemic infection of C57BL/6 mice. In vitro production of TNF-alpha, IL-6 and IL-1beta by macrophages in response to Deltagpi7 cells was significantly increased as compared to control (wild type GPI7/GPI7 and revertant gpi7/GPI7) cells; this probably contributes to the enhanced recruitment of neutrophils to the peritoneal cavity in response to Deltagpi7 cells. Survival of knockout mice for Toll-like receptor (TLR) 2 and TLR4 following intravenous injection of Deltagpi7 cells showed no signifi…

MESH: InflammationGlycosylphosphatidylinositolsNeutrophilsmedicine.medical_treatmentInterleukin-1betasourisMESH: NeutrophilsMESH: VirulenceMESH: Mice KnockoutMiceMESH: Interleukin-1betaNull cellMESH: AnimalsCandida albicansPeritoneal CavityCells CulturedMice Knockout0303 health sciencesToll-like receptorbiologyVirulenceMESH: Toll-Like Receptor 2MESH: Peritoneal CavityMESH: Toll-Like Receptor 4MESH: GlycosylphosphatidylinositolsInfectious DiseasesCytokineMESH: Survival AnalysisTumor necrosis factor alphaMESH: Fungal Proteinsprotéine de la paroi cellulaireMESH: Macrophages PeritonealMESH: Cells CulturedVirulence FactorsImmunologyMicrobiologyMicrobiologyProinflammatory cytokineFungal Proteins03 medical and health sciencesMESH: Mice Inbred C57BLmedicineAnimalsMESH: Mice030304 developmental biologyMESH: Virulence FactorsInflammation030306 microbiologyInterleukin-6Tumor Necrosis Factor-alphaMESH: Candida albicans[SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry Molecular Biology/Molecular biologybiology.organism_classificationSurvival AnalysispathogénicitéMESH: Interleukin-6Toll-Like Receptor 2Mice Inbred C57BLToll-Like Receptor 4TLR2GlycosylphosphatidylinositolMESH: Gene DeletionMESH: Tumor Necrosis Factor-alphaTLR4Macrophages Peritonealcandida albicansimmunitéGene Deletion
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SARS CoV2 infection _The longevity study perspectives

2021

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MaleAgingssRNA single-stranded RNARFLP restriction fragment length polymorphismHSPs heat shock proteinsReviewPTMs post-translational modificationsSevere Acute Respiratory SyndromeBiochemistryHIV-1 human immunodeficiency virus-1TNF-α tumor necrosis factor-αEC endothelial cells0302 clinical medicineFluAV influenza A virusI insertionMedicineIFN-γ interferon-γDIC disseminated intravascular coagulationPCR Polymerase Chain Reactionmedia_commonAged 80 and overLongevityRBD receptor-binding domainNeurologyLongevity modelMI myocardial infarctionNK natural killerhPIV2 human parainfluenza virus type 2media_common.quotation_subjectResearching genetic basis of resistance and potential pharmacological targetsLongevityDBP diastolic blood pressureNF-Kb nuclear transcription factor kBRANTES regulated upon activation normal T cell expressed and secretedMphi human macrophages03 medical and health sciencesCox 2 cyclooxygenase 2ORF open reading framePT prothrombin timeSettore MED/05 - Patologia ClinicaHumansMolecular BiologyInflammatory genesARDS acute respiratory distress syndromeNO nitric oxideD deletionCpGIs CpG islandsT2DM type 2 diabetes mellitusmedicine.diseaseFDP fibrin degradation products030104 developmental biologySARS CoV2 severe acute respiratory syndrome Coronavirus 2 virusImmunologyBMI body max indexItalian nonagenarians/centenariansRSV respiratory syncytial virusComplication030217 neurology & neurosurgeryMAPK mitogen-activated protein kinaseIP-10 IFN-γ -Inducible Protein 1040301 basic medicineAT1R activity of angiotensin 1 receptorsDCs dentritic cellsSSCP single strand conformation polymorphismACE/DD polymorphism of the angiotensin converting enzymeFGF21 fibroblast growth factor 21TLR4 toll-like receptor 4NAD nicotinamide adenine dinucleotideACE angiotensin-I converting enzymeAT2R activity of angiotensin 2 receptorsCOVID-19 Coronavirus disease 2019Respiratory distressACE2 angiotensin converting enzyme 2MKP-1 mitogen-activated protein kinase phosphatase-1 ()PD protease domainSNP single nucleotide polymorphismEH essential hypertensionTNFR tumor necrosis factor receptorINR international normalized ratio of the prothrombin timePAI-1 plasminogen activator inhibitor-1Ang angiotensinLPS lipopolysaccharideMCP1 monocyte chemoattractant protein-1medicine.symptomaPTT partial thromboplastin timeBiotechnologyDUSP1 dual specificity phosphatase 1Coronavirus disease 2019 (COVID-19)PC prostate cancerRAS renin-angiotensin aldosterone systemCCR5Δ32 genetic variant of chemokine receptorCOVID-19 Researching genetic basis of resistance and potential pharmacological targets Italian nonagenarians/centenarians Longevity modelAsymptomaticSARS-1 severe acute respiratory syndrome virus 1SIRT-1 Sirtuin 1Th1 t-helper lymphocyte type 1Immune systemROS reactive oxygen speciesTGF-β transforming growth factor betaET-1 endothelin-1ComputingMethodologies_COMPUTERGRAPHICSADAM-17 metallopeptidase domain 17business.industrySARS-CoV-2SBP systolic blood pressureCOVID-19HDACs histone deacetylasesComorbidityImmune Systembusiness5-LO lipoxygenase 5Ageing Research Reviews
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