Search results for "CCR2"

showing 3 items of 13 documents

Systemic Immune Responses in Alzheimer's Disease: In Vitro Mononuclear Cell Activation and Cytokine Production

2010

To investigate the systemic signs of immune-inflammatory responses in Alzheimer's disease (AD), in the present study we have analyzed blood lymphocyte subsets and the expression of activation markers on peripheral blood mononuclear cells (PBMCs) from AD patients and age-matched healthy controls (HC) activated in vitro by recombinant amyloid-beta peptide (rAbeta42). Our study of AD lymphocyte subpopulations confirms the already described decrease of the absolute number and percentage of B cells when compared to HC lymphocytes, whereas the other subsets are not significantly different in patients and controls. We report the increased expression of the activation marker CD69 and of the chemoki…

MaleEotaxinCCR2ChemokineTime Factorsmedicine.medical_treatmentPeripheral blood mononuclear cellChemokine receptorImmune systemAlzheimer’s disease chemokine cytokine PBMC rAβ42Alzheimer DiseasemedicineHumansLymphocytesIL-2 receptorCells CulturedAgedSettore MED/04 - Patologia GeneraleAged 80 and overAnalysis of VarianceAmyloid beta-Peptidesbiologybusiness.industryGeneral NeuroscienceGeneral MedicineMiddle AgedFlow CytometryPeptide FragmentsPsychiatry and Mental healthClinical PsychologyCytokineGene Expression RegulationCase-Control StudiesImmunologyLeukocytes Mononuclearbiology.proteinCytokinesFemaleGeriatrics and GerontologybusinessJournal of Alzheimer's Disease
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Enhanced glomerular Toll-like receptor 4 expression and signaling in patients with type 2 diabetic nephropathy and microalbuminuria

2014

Toll-like receptor 4 (TLR4), a component of the innate immune system, is recognized to promote tubulointerstitial inflammation in overt diabetic nephropathy (DN). However, there is no information on immune activation in resident renal cells at an early stage of human DN. In order to investigate this, we studied TLR4 gene and protein expression and TLR4 downward signaling in kidney biopsies of 12 patients with type 2 diabetes and microalbuminuria, and compared them with 11 patients with overt DN, 10 with minimal change disease (MCD), and control kidneys from 13 patients undergoing surgery for a small renal mass. Both in microalbuminuria and in overt DN, TLR4 mRNA and protein were overexpress…

MaleKidney GlomerulusDiabetic nephropathyurologic and male genital diseasesDiabetic nephropathynefropatiadiabeticaDiabetic NephropathiesMinimal change diseaseChemokine CCL5KidneyMiddle AgedUp-RegulationKidney Tubulesmedicine.anatomical_structureNephrologyDisease ProgressionFemaleHumanSignal Transductionmedicine.medical_specialtyReceptors CCR5Receptors CCR2NephrosisAntigens Differentiation MyelomonocyticFollow-Up StudieNephropathyToll-like receptorAntigens CDDiabetes mellitusInternal medicinemedicineAlbuminuriaHumansRNA MessengerInflammationInterleukin-6Tumor Necrosis Factor-alphabusiness.industryNephrosis LipoidKidney TubuleTranscription Factor RelABiomarkermedicine.diseaseImmunity InnateToll-Like Receptor 4EndocrinologyDiabetes Mellitus Type 2Diabetic NephropathieTLR4MicroalbuminuriaKidney GlomerulubusinessBiomarkersMicroalbuminuriaFollow-Up StudiesKidney International
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Second-generation Langerhans cells originating from epidermal precursors are essential for CD8+ T cell priming.

2014

Abstract In vivo studies questioned the ability of Langerhans cells (LCs) to mediate CD8+ T cell priming. To address this issue, we used intradermal immunization with plasmid DNA, a system in which activation of CD8+ T cells depends on delayed kinetics of Ag presentation. We found that dendritic cells (DCs) located in the skin at the time of immunization have limited ability to activate CD8+ T cells. This activity was mediated by a second generation of DCs that differentiated in the skin several days after immunization, as well as by lymph node–resident DCs. Intriguingly, CD8+ T cell responses were not affected following treatment with clodronate liposomes, immunization of CCR2−/− mice, or …

Receptors CCR2T cellImmunologyPriming (immunology)CD11cchemical and pharmacologic phenomenaBiologyCD8-Positive T-LymphocytesLymphocyte ActivationMiceImmune systemGiant Cells LanghansmedicineImmunology and AllergyCytotoxic T cellAnimalsSkinMice KnockoutChemokine CCL20integumentary systemhemic and immune systemsCell DifferentiationDendritic CellsMolecular biologyCD11c AntigenCCL20Mice Inbred C57BLmedicine.anatomical_structureImmunologyIntercellular Signaling Peptides and ProteinsClodronic AcidCD8Ex vivoHeparin-binding EGF-like Growth FactorPlasmidsJournal of immunology (Baltimore, Md. : 1950)
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