Search results for " CD4-Positive T-Lymphocytes"

showing 10 items of 10 documents

Efficacy and safety of human papillomavirus vaccination in HIV-infected patients: a systematic review and meta-analysis

2021

AbstractThe prophylactic vaccines available to protect against infections by HPV are well tolerated and highly immunogenic. People with HIV have a higher risk of developing HPV infection and HPV-associated cancers due to a lower immune response, and due to viral interactions. We performed a systematic review of RCTs to assess HPV vaccines efficacy and safety on HIV-infected people compared to placebo or no intervention in terms of seroconversion, infections, neoplasms, adverse events, CD4+ T-cell count and HIV viral load. The vaccine-group showed a seroconversion rate close to 100% for each vaccine and a significantly higher level of antibodies against HPV vaccine types, as compared to the …

0301 basic medicineCD4-Positive T-LymphocytesMaleDisease preventionHIV InfectionsAdolescent Adult Antibodies Viral CD4 Lymphocyte Count CD4-Positive T-Lymphocytes Female HIV Infections Humans Male Papillomavirus Infections Papillomavirus Vaccines Public Health Randomized Controlled Trials as Topic Risk Treatment Outcome Viral Load Virus Shedding Young Adult Patient SafetySettore MED/42 - Igiene Generale E ApplicataAntibodies Viral0302 clinical medicine030212 general & internal medicineViralRandomized Controlled Trials as TopicPublic healthMultidisciplinaryQHPV infectionRViral LoadAdolescent; Adult; Antibodies Viral; CD4 Lymphocyte Count; CD4-Positive T-Lymphocytes; Female; HIV Infections; Humans; Male; Papillomavirus Infections; Papillomavirus Vaccines; Public Health; Randomized Controlled Trials as Topic; Risk; Treatment Outcome; Viral Load; Virus Shedding; Young Adult; Patient SafetyVirus SheddingTreatment OutcomeMedicineFemalePublic HealthPatient SafetyViral loadAdultRiskmedicine.medical_specialtyAdolescentScienceHPV vaccinesPlaceboAntibodiesArticle03 medical and health sciencesPapillomavirus VaccinesYoung AdultInternal medicinemedicineHumansPapillomavirus VaccinesSeroconversionViral sheddingAdverse effectbusiness.industryPapillomavirus InfectionsHealth caremedicine.diseaseCD4 Lymphocyte Count030104 developmental biologybusinessScientific Reports
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Increased expression of interleukin-22 in patients with giant cell arteritis

2017

Objectives GCA is characterized by arterial remodelling driven by inflammation. IL-22 is an attractive cytokine which acts at the crosstalk between immune and stromal cells. We hypothesized that IL-22 might be induced in GCA and might be involved in disease pathogenesis. Methods Patients subjected to temporal artery biopsies (TABs) naive from therapy were enrolled: 27 biopsy-proven GCA, 8 biopsy-negative GCA, 21 biopsy-negative non-GCA patients. Expression of IL-22 was determined in TABs by immunohystochemistry, in plasma by ELISA, in peripheral blood mononuclear cells by real-time PCR and flow cytometry. Effects of IL-22 on viability and gene expression of primary cultures obtained from TA…

0301 basic medicineCD4-Positive T-LymphocytesMalearterial remodelling; autoimmunity; giant cell arteritis; inflammation; interleukin-22; pathogenesismedicine.medical_treatmentMessengerInterleukin 220302 clinical medicineimmune system diseasesarterial remodelling; autoimmunity; giant cell arteritis; inflammation; interleukin-22; pathogenesis; Aged; Aged 80 and over; CD4-Positive T-Lymphocytes; Calcium Ionophores; Carcinogens; Case-Control Studies; Enzyme-Linked Immunosorbent Assay; Female; Flow Cytometry; Giant Cell Arteritis; Humans; Immunohistochemistry; In Vitro Techniques; Interleukins; Ionomycin; Leukocytes Mononuclear; Male; RNA Messenger; Real-Time Polymerase Chain Reaction; Temporal Arteries; Tetradecanoylphorbol Acetate80 and overLeukocytesPharmacology (medical)skin and connective tissue diseasesAged 80 and overIonomycinpathogenesisautoimmunityInterleukinFlow CytometryImmunohistochemistryTemporal ArteriesCalcium IonophoresCytokinecardiovascular systemTetradecanoylphorbol AcetateFemalemedicine.symptomgiant cell arteritiStromal cellMononuclearGiant Cell ArteritisInflammationEnzyme-Linked Immunosorbent AssayIn Vitro TechniquesReal-Time Polymerase Chain ReactionPeripheral blood mononuclear cellarterial remodelling03 medical and health sciencesRheumatologymedicineHumansViability assayRNA Messengercardiovascular diseasesAged030203 arthritis & rheumatologybusiness.industryInterleukinsinterleukin-22medicine.diseaseGiant cell arteritis030104 developmental biologyinflammationCase-Control StudiesImmunologyCarcinogensLeukocytes MononuclearRNAbusiness
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Pre-ART HIV-1 DNA in CD4+ T cells correlates with baseline viro-immunological status and outcome in patients under first-line ART

2018

Objectives We evaluated the association between pre-ART HIV DNA and HIV-infected participant characteristics at baseline as well as with their response to first-line ART. Methods Four hundred and thirty-three patients from the ICONA cohort, starting first-line ART after the year 2000, were analysed. Pre-ART HIV DNA was quantified with the modified COBAS TaqMan HIV-1 Test and normalized by CD4+ T cells. Linear correlation between pre-ART HIV DNA and other continuous markers (HIV RNA, CD4 count, markers of inflammation and coagulation) at baseline was evaluated by means of Pearson correlation coefficient and a linear regression model. Survival analyses and Cox regression models were used to s…

0301 basic medicineOncologyCD4-Positive T-LymphocytesMaleHIV InfectionsSettore MED/07chemistry.chemical_compoundHIV InfectionPharmacology (medical)ViralProspective StudiesProspective cohort studyAntiinfective agentAdult; Anti-Retroviral Agents; CD4-Positive T-Lymphocytes; DNA Viral; Female; HIV Infections; HIV-1; Humans; Male; Middle Aged; Prospective Studies; Survival Analysis; Treatment Outcome; Viral LoadMiddle AgedViral LoadvirologyHIV CD4Stavudinemedicine.anatomical_structureInfectious DiseasesTreatment Outcomehiv-1 t-lymphocytes virology blood hiv rna hiv dnaAnti-Retroviral AgentsCD4-Positive T-Lymphocyteblood hiv rnaCohorthiv dnaFemaleSurvival AnalysiViral loadARTHumanMicrobiology (medical)Adultmedicine.medical_specialtyAntiretroviral Therapy CD4 Lymphocyte Count StavudineT cellAntiretroviral TherapySettore MED/17 - MALATTIE INFETTIVENO03 medical and health sciencesInternal medicinemedicineHumanst-lymphocytesSurvival analysisPharmacologybusiness.industryProportional hazards modelHIVDNASurvival AnalysisCD4 Lymphocyte CountProspective Studie030104 developmental biologychemistryDNA ViralHIV-1Anti-Retroviral AgentbusinessDNA
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The transcription factor IFN regulatory factor–4 controls experimental colitis in mice via T cell–derived IL-6

2008

The proinflammatory cytokine IL-6 seems to have an important role in the intestinal inflammation that characterizes inflammatory bowel diseases (IBDs) such as Crohn disease and ulcerative colitis. However, little is known about the molecular mechanisms regulating IL-6 production in IBD. Here, we assessed the role of the transcriptional regulator IFN regulatory factor-4 (IRF4) in this process. Patients with either Crohn disease or ulcerative colitis exhibited increased IRF4 expression in lamina propria CD3+ T cells as compared with control patients. Consistent with IRF4 having a regulatory function in T cells, in a mouse model of IBD whereby colitis is induced in RAG-deficient mice by transp…

AdultCD4-Positive T-LymphocytesMaleAdoptive cell transferRecombinant Fusion ProteinsT-LymphocytesCD3T cellAdoptive Transfer; Adult; Animals; Apoptosis; CD4-Positive T-Lymphocytes; Colitis; Cytokines; DNA-Binding Proteins; Female; Gene Expression Regulation; Humans; Inflammatory Bowel Diseases; Interferon Regulatory Factors; Interleukin-6; Intestinal Mucosa; Male; Mice; Mice Inbred C57BL; Mice Knockout; Middle Aged; Oxazolone; Receptors Interleukin-6; Recombinant Fusion Proteins; T-Lymphocytes; Trinitrobenzenesulfonic AcidApoptosisProinflammatory cytokineMiceIntestinal mucosamedicineAnimalsHumansIntestinal MucosaColitisInterleukin 6Mice KnockoutbiologyInterleukin-6OxazoloneGeneral MedicineMiddle AgedColitisInflammatory Bowel Diseasesmedicine.diseaseAdoptive TransferReceptors Interleukin-6Ulcerative colitisDNA-Binding ProteinsMice Inbred C57BLmedicine.anatomical_structureGene Expression RegulationTrinitrobenzenesulfonic AcidInterferon Regulatory FactorsImmunologybiology.proteinCytokinesFemaleResearch ArticleJournal of Clinical Investigation
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Long-term CD4+ T-cell count evolution after switching from regimens including HIV nucleoside reverse transcriptase inhibitors (NRTI) plus protease in…

2011

Abstract Background Data regarding CD4+ recovery after switching from protease inhibitor (PI)-based regimens to regimens not containing PI are scarce. Methods Subjects with virological success on first-PI-regimens who switched to NNRTI therapy (NNRTI group) or to nucleoside reverse transcriptase (NRTI)-only (NRTI group) were studied. The effect of the switch on the ongoing CD4+ trend was assessed by two-phase linear regression (TPLR), allowing us to evaluate whether a change in the CD4+ trend (hinge) occurred and the time of its occurrence. Furthermore, we described the evolution of the frequencies in CD4-count classes across four relevant time-points (baseline, before and immediately after…

AdultCD4-Positive T-LymphocytesMalemedicine.medical_treatmentProtease InhibitorHuman immunodeficiency virus (HIV)CD4+ T-cellHIV InfectionsBiologymedicine.disease_causeSettore MED/17 - MALATTIE INFETTIVENucleoside Reverse Transcriptase InhibitorTimelcsh:Infectious and parasitic diseasesZidovudineRetrospective Studieimmune system diseasesAntiretroviral Therapy Highly ActivemedicineHumansProtease inhibitor (pharmacology)HIV InfectionProtease Inhibitorslcsh:RC109-216Retrospective StudiesHIV; CD4+ T-cellProteaseCd4 t cellDrug SubstitutionBackground dataHIVvirus diseasesMiddle AgedVirologyHIV; AIDS; CD4; NRTIReverse Transcriptase InhibitorCD4 Lymphocyte CountInfectious DiseasesCD4-Positive T-LymphocyteReverse Transcriptase InhibitorsRitonavirFemaleAdult; Antiretroviral Therapy Highly Active; CD4 Lymphocyte Count; CD4-Positive T-Lymphocytes; Female; HIV Infections; Humans; Male; Middle Aged; Protease Inhibitors; Retrospective Studies; Reverse Transcriptase Inhibitors; Time; Drug Substitution; Infectious Diseasesmedicine.drugHumanResearch Article
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The impact of DAA-mediated HCV eradication on CD4+ and CD8+ T lymphocyte trajectories in HIV/HCV coinfected patients: Data from the ICONA Foundation …

2021

HCV infection has been hypothesized as a contributor of poor CD4+ recovery in patients living with HIV (PLWHIV). Aim of this study was to evaluate CD4+, CD8+ cells and CD4/CD8 ratio trends before and after HCV treatment with direct acting agents (DAA) in PLWHIV. HIV/HCV patients enrolled in ICONA and HepaICONA cohorts with HIV-RNA≤50 copies/ml who achieved a sustained viral response after DAA treatment were studied. A linear regression model was used to investigate CD4+, CD8+ and CD4/CD8 changes 12 months before and after DAA treatment. A total of 939 HIV/HCV patients were included, 225 (24.0%) female, median age: 53 years (IQR 50–56). At DAA initiation, CD4+ T cell count was <350 cells/…

CD4-Positive T-LymphocytesHIV InfectionsHepacivirusCD8-Positive T-LymphocytesGastroenterologySettore MED/07chemistry.chemical_compound0302 clinical medicineCd8 t lymphocyteHIV Infection030212 general & internal medicineCoinfectionCD4; CD8; DAA; HCV/HIV; immune activationHcv clearancevirus diseasesMiddle AgedHepatitis CInfectious Diseasesmedicine.anatomical_structureCD4-Positive T-LymphocyteCohort030211 gastroenterology & hepatologyFemaleCD4 CD8 DAA HCV/HIV immune activationHumanImmune activationmedicine.medical_specialtyHCV/HIVT cellAntiviral Agentsimmune activationNO03 medical and health sciencesVirologyInternal medicinemedicineHumansIn patientimmune activation.DAAAntiviral AgentHepaciviruHepatologybusiness.industryRibavirinCD8-Positive T-LymphocyteCD8CD4CD4 Lymphocyte CountchemistryCD4; CD8; DAA; HCV/HIV; immune activation; Antiviral Agents; CD4 Lymphocyte Count; CD4-Positive T-Lymphocytes; CD8-Positive T-Lymphocytes; Female; Hepacivirus; Humans; Middle Aged; Coinfection; HIV Infections; Hepatitis CbusinessCD8
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CD4(+)IL-13(+) cells in peripheral blood well correlates with the severity of atopic dermatitis in children.

2005

BACKGROUND In atopic dermatitis (AD) a Th1/Th2 imbalance has been reported, and interleukin (IL)-13 seems to play a pivotal role in the inflammatory network. We tried to assess the correlation between the immunological marker CD4(+)IL-13(+) and the clinical phase of extrinsic AD in children. METHODS Twenty children with AD were studied. Assessed parameters were: clinical severity (SCORAD index), total serum immunoglobulin E (IgE), blood eosinophil count, and percentage of CD4(+)IFNgamma(+), CD4(+)IL-4(+), CD4(+)IL-13(+) T cells. Determinations were carried out in the acute phase and after clinical remission were achieved. Ten nonatopic-matched children served as controls. RESULTS At baselin…

CD4-Positive T-LymphocytesMaleAllergyImmunologyCD4 T cellsEosinophilSettore MED/10 - Malattie Dell'Apparato Respiratoriointerleukin-13Immunoglobulin ESeverity of Illness IndexDermatitis AtopicSettore MED/13 - EndocrinologiaAtopyLeukocyte CountImmunopathologymedicineHumansImmunology and AllergySCORADChildmedicine.diagnostic_testbiologyatopic dermatitisbusiness.industrySeverity of Illness Index; Interleukin-13; Dermatitis Atopic; Humans; Child; CD4 Lymphocyte Count; CD4-Positive T-Lymphocytes; Leukocyte Count; Child Preschool; Eosinophils; Immunoglobulin E; Case-Control Studies; Female; MaleInterleukinallergy; atopic dermatitis; CD4 T cells; interleukin-13; Th1/Th2 cellsAtopic dermatitisEosinophilImmunoglobulin Emedicine.diseaseallergyCD4 Lymphocyte CountEosinophilsmedicine.anatomical_structureCD4-Positive T-LymphocyteCase-Control StudiesChild PreschoolImmunologybiology.proteinFemaleTh1/Th2 cellsbusinessCase-Control StudieHuman
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Potential involvement of IL-9 and Th9 cells in the pathogenesis of rheumatoid arthritis

2015

Objective IL-9 has been shown to be upregulated before the clinical onset of articular disease in RA. The exact role of IL-9 and Th9 cells in RA, however, has not yet been adequately studied. The aim of this study was to evaluate the expression of IL-9 and IL-9-expressing cells in RA patients. Methods IL-9, IL-9R, PU.1, IL-9, thymic stromal lymphopoietin (TSLP), IL-4 and TGF-β expression was assessed by real-time-PCR in the synovial tissues of RA and OA patients. IL-9, IL-9R, IL-4, TSLP and TGF-β were also investigated by immunohistochemistry. Peripheral CD4(+) T cell subsets were studied by flow cytometry analysis before and after incubation with citrullinated peptides. Results IL-9 was ov…

CD4-Positive T-LymphocytesMaleCitrullinated peptide; IL-9; Rheumatoid arthritis; Th9 cells; Adolescent; Adult; Arthritis Rheumatoid; CD4-Positive T-Lymphocytes; Cells Cultured; Cytokines; Female; Gene Expression Regulation; Humans; Interleukin-4; Interleukin-9; Lymphocyte Activation; Male; Middle Aged; RNA Messenger; Synovial Membrane; T-Lymphocyte Subsets; Transforming Growth Factor beta; Young Adult; Rheumatology; Medicine (all); Pharmacology (medical)MessengerLymphocyte ActivationArthritis RheumatoidT-Lymphocyte SubsetsTransforming Growth Factor betaRheumatoidTh9 cellPharmacology (medical)Cells CulturedCulturedmedicine.diagnostic_testbiologyMedicine (all)Synovial MembraneMiddle Agedmedicine.anatomical_structureCD4-Positive T-LymphocyteCytokinesFemaleArthritiHumanAdultThymic stromal lymphopoietinAdolescentT cellCD3T-Lymphocyte SubsetCitrullinated peptidePeripheral blood mononuclear cellFlow cytometryYoung AdultRheumatologyThymic Stromal LymphopoietinmedicineHumansInterleukin 9RNA MessengerCytokineInterleukin 4Rheumatoid arthritibusiness.industryInterleukin-9IL-9Settore MED/16 - ReumatologiaGene Expression RegulationImmunologybiology.proteinRNACellInterleukin-4Synovial membranebusiness
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Immune characterization of the HBHA-specific response in Mycobacterium tuberculosis-infected patients with or without HIV infection.

2017

Introduction RD1-based Interferon-γ Release Assays (IGRAs) cannot distinguish latent from active tuberculosis (TB) disease. Conversely, a positive response to heparin-binding haemagglutinin (HBHA)-based IGRAs, among TB-infected subjects, correlates with Mycobacterium tuberculosis (Mtb) containment and low risk of TB progression. The aim of this study was to characterize HBHA-immune responses in HIV-infected and uninfected subjects with active TB or latent TB infection (LTBI). Methods 49 subjects were prospectively enrolled: 22 HIV-uninfected (13 TB, 9 LTBI) and 27 HIV-infected (12 HIV-TB, 15 HIV-LTBI). Whole blood and peripheral blood mononuclear cells were stimulated with HBHA and RD1 anti…

Genetics and Molecular Biology (all)0301 basic medicineBacterial DiseasesRNA virusesCD4-Positive T-LymphocytesMalePhysiologylcsh:MedicineHIV InfectionsCD8-Positive T-LymphocytesPathology and Laboratory MedicineBiochemistryMemory T cellsWhite Blood CellsImmunodeficiency VirusesInterferonAnimal CellsImmune PhysiologyLectinsMedicine and Health SciencesProspective Studieslcsh:ScienceInnate Immune SystemMultidisciplinarybiologyT CellsInterleukinvirus diseasesMiddle AgedFlow Cytometry3. Good healthActinobacteriaInfectious DiseasesMedical MicrobiologyViral PathogensVirusesDisease ProgressionCytokinesFemaleCellular TypesPathogensmedicine.drugResearch ArticleAdultTuberculosisImmune CellsImmunologyCytotoxic T cellsEnzyme-Linked Immunosorbent AssayPeripheral blood mononuclear cellMicrobiologySettore MED/07 - MICROBIOLOGIA E MICROBIOLOGIA CLINICAMycobacterium tuberculosis03 medical and health sciencesInterferon-gammaImmune systemAntigenRetrovirusesmedicineTuberculosisHumansMicrobial PathogensAdult; CD4-Positive T-Lymphocytes; CD8-Positive T-Lymphocytes; Cytokines; Disease Progression; Enzyme-Linked Immunosorbent Assay; Female; Flow Cytometry; HIV Infections; Humans; Interferon-gamma; Lectins; Male; Middle Aged; Prospective Studies; Tuberculosis; Biochemistry Genetics and Molecular Biology (all); Agricultural and Biological Sciences (all)Blood CellsBacteriaLentiviruslcsh:ROrganismsBiology and Life SciencesProteinsHIVCell BiologyMolecular Developmentbiology.organism_classificationmedicine.diseaseTropical DiseasesVirology030104 developmental biologyAgricultural and Biological Sciences (all)Immune SystemImmunologylcsh:QInterferonsCD8Mycobacterium TuberculosisDevelopmental BiologyPLoS ONE
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Smad7 controls resistance of colitogenic T cells to regulatory T cell-mediated suppression.

2008

Background & Aims Foxp3-expressing regulatory T cells (Tregs) play a key role in the maintenance of the gut immune homeostasis, and an intact transforming growth factor (TGF)-β signaling is required for their function. In inflammatory bowel disease (IBD), the TGF-β signaling is impaired because of high expression of the inhibitory molecule Smad7. Although no intrinsic defects in Tregs function have been shown in IBD, it is still unknown whether colitogenic T cells are susceptible to Treg-mediated suppression. In this study, we have investigated whether IBD mucosal CD4+ T cells are resistant to Tregs and whether Smad7 is involved in this process. Methods IBD lamina propria mononuclear cells …

antisense oligonucleotideCD4-Positive T-LymphocytesAdoptive cell transferT-Lymphocytesanimal cellCell CommunicationInbred C57BLT-Lymphocytes RegulatoryTransgenicMiceregulatory T lymphocyteCrohn DiseaseTransforming Growth Factor betamononuclear cellRAG1 proteinIntestinal MucosaenteritisCells CulturedMice KnockoutSettore MED/12 - GastroenterologiaCulturedintegumentary systemmedicine.diagnostic_testarticleGastroenterologyInterleukinhemic and immune systemsT helper cellColitisRegulatoryUp-Regulationmedicine.anatomical_structurepriority journalgamma interferonSignal TransductionRegulatory T cellColonCellsKnockoutanimal experimentinterleukin 6chemical and pharmacologic phenomenaMice TransgenicBiologyinterleukin 2Recombination-activating geneFlow cytometryProinflammatory cytokineSmad7 ProteinmedicineAnimalsHumanscontrolled studyhumanlamina propriamouseCell ProliferationHomeodomain ProteinsCD4+ T lymphocytenonhumanHepatologyAnimalflow cytometryhuman cellanimal cell culturetransgenic mouseMice Inbred C57BLDisease Models Animalantisense oligonucleotide; gamma interferon; interleukin 17; interleukin 2; interleukin 6; RAG1 protein; Smad7 protein; animal cell; animal cell culture; animal experiment; article; CD4+ T lymphocyte; cell proliferation; colitis; controlled study; enteritis; flow cytometry; human; human cell; knockout mouse; lamina propria; mononuclear cell; mouse; nonhuman; priority journal; regulatory T lymphocyte; transgenic mouse; Animals; CD4-Positive T-Lymphocytes; Cell Communication; Cell Proliferation; Cells Cultured; Colitis; Colon; Crohn Disease; Disease Models Animal; Homeodomain Proteins; Humans; Intestinal Mucosa; Mice; Mice Inbred C57BL; Mice Knockout; Mice Transgenic; Signal Transduction; Smad7 Protein; T-Lymphocytes Regulatory; Transforming Growth Factor beta; Up-RegulationDisease ModelsImmunologyinterleukin 17knockout mouseTransforming growth factorGastroenterology
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