Search results for "Orthomyxoviridae Infections"

showing 8 items of 8 documents

Successive Losses of Central Immune Genes Characterize the Gadiformes' Alternate Immunity.

2016

Great genetic variability among teleost immunomes, with gene losses and expansions of central adaptive and innate components, has been discovered through genome sequencing over the last few years. Here, we demonstrate that the innate Myxovirus resistance gene (Mx) is lost from the ancestor of Gadiformes and the closely related Stylephorus chordatus, thus predating the loss of Major Histocompatibility Complex class II (MHCII) in Gadiformes. Although the functional implication of Mx loss is still unknown, we demonstrate that this loss is one of several ancient events appearing in successive order throughout the evolution of teleost immunity. In particular, we find that the loss of Toll-like r…

0106 biological sciences0301 basic medicineFish ProteinsLineage (genetic)LetterGenes MHC Class IIZoologyParacanthopterygiiadaptationteleosts010603 evolutionary biology01 natural sciencesEvolution Molecular03 medical and health sciencesOrthomyxoviridae InfectionsPhylogeneticsGeneticsAnimalsGenetic variabilityGeneinnate immunityEcology Evolution Behavior and SystematicsInnate immune systemPolymorphism GeneticbiologyGadiformesadaptive immunitygene lossAcquired immune systembiology.organism_classificationGadiformesToll-Like Receptor 5030104 developmental biologyEvolutionary biologyMyxovirus resistance (Mx)Gene DeletionGenome biology and evolution
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Regulation of kynurenine biosynthesis during influenza virus infection.

2017

Influenza A viruses (IAVs) remain serious threats to public health because of the shortage of effective means of control. Developing more effective virus control modalities requires better understanding of virus–host interactions. It has previously been shown that IAV induces the production of kynurenine, which suppresses T-cell responses, enhances pain hypersensitivity and disturbs behaviour in infected animals. However, the regulation of kynurenine biosynthesis during IAV infection remains elusive. Here we showed that IAV infection induced expression of interferons (IFNs), which upregulated production of indoleamine-2,3-dioxygenase (IDO1), which catalysed the kynurenine biosynthesis. Furt…

0301 basic medicineIndoleshost-pathogen interactionViral Nonstructural Proteinsmedicine.disease_causeVirus ReplicationBiochemistryinfluenza viruschemistry.chemical_compoundMiceInfluenza A Virus H1N1 SubtypeInterferonOximesinnate immunityLungOxazolesKynurenineRegulation of gene expressionMice Inbred BALB CSulfonamidesTryptophaninterferon3. Good healthHost-Pathogen InteractionsFemaleMetabolic Networks and Pathwaysmedicine.drugHost–pathogen interaction030106 microbiologyPrimary Cell CultureBiologyta3111Antiviral AgentsVirus03 medical and health sciences3-dioxygenase (IDO1)Orthomyxoviridae InfectionsmedicineAnimalsHumansImmunologic FactorsIndoleamine-Pyrrole 23-DioxygenasePyrrolesMolecular BiologyInnate immune systemta1184Macrophagesta1183ta1182Cell BiologyVirologyindoleamine-pyrrole 2Thiazoles030104 developmental biologyHerpes simplex virusViral replicationchemistryGene Expression RegulationInterferonsTranscriptomeKynurenineThe FEBS journal
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Influenza A virus infection inhibits the efficient recruitment of Th2 cells into the airways and the development of airway eosinophilia.

2003

Abstract Most infections with respiratory viruses induce Th1 responses characterized by the generation of Th1 and CD8+ T cells secreting IFN-γ, which in turn have been shown to inhibit the development of Th2 cells. Therefore, it could be expected that respiratory viral infections mediate protection against asthma. However, the opposite seems to be true, because viral infections are often associated with the exacerbation of asthma. For this reason, we investigated what effect an influenza A (flu) virus infection has on the development of asthma. We found that flu infection 1, 3, 6, or 9 wk before allergen airway challenge resulted in a strong suppression of allergen-induced airway eosinophil…

ChemokineEpitopes T-LymphocyteImmunoglobulin Emedicine.disease_causeMiceCell MovementInfluenza A virusImmunology and AllergyEosinophiliaChemokine CCL5LungCells CulturedChemokine CCL2Mice KnockoutMice Inbred BALB Cbiologymedicine.diagnostic_testrespiratory systemUp-Regulationmedicine.anatomical_structureInfluenza A virusChemokines CCGoblet CellsNippostrongylusmedicine.symptomBronchial HyperreactivityChemokine CCL11OvalbuminImmunologyDown-RegulationMice TransgenicCCL5VirusInterferon-gammaTh2 CellsOrthomyxoviridae InfectionsLymphopeniamedicineAnimalsLymphocyte CountPulmonary EosinophiliaStrongylida InfectionsGoblet cellMetaplasiaAllergensPeptide Fragmentsrespiratory tract diseasesMice Inbred C57BLBronchoalveolar lavageImmunologyCell Migration Inhibitionbiology.proteinInterleukin-5Journal of immunology (Baltimore, Md. : 1950)
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A central role for Notch in effector CD8(+) T cell differentiation.

2014

Activated CD8(+) T cells choose between terminal effector cell (TEC) or memory precursor cell (MPC) fates. We found that the signaling receptor Notch controls this 'choice'. Notch promoted the differentiation of immediately protective TECs and was correspondingly required for the clearance of acute infection with influenza virus. Notch activated a major portion of the TEC-specific gene-expression program and suppressed the MPC-specific program. Expression of Notch was induced on naive CD8(+) T cells by inflammatory mediators and interleukin 2 (IL-2) via pathways dependent on the metabolic checkpoint kinase mTOR and the transcription factor T-bet. These pathways were subsequently amplified d…

ImmunologyNotch signaling pathwayMice TransgenicCell SeparationBiologyAdaptive ImmunityCD8-Positive T-LymphocytesEffector cellLymphocyte ActivationReal-Time Polymerase Chain ReactionArticlememoryMiceOrthomyxoviridae InfectionsCell surface receptorT-Lymphocyte SubsetsTransduction GeneticPrecursor cellImmunology and AllergyCytotoxic T cellAnimalsGeneticsReceptors NotchEffectorCell DifferentiationFlow CytometryAdoptive TransferTEC3. Good healthCell biologyMice Inbred C57BLeffectorCD8 T cellMPCInfluenza A virusinflammationTranscriptomeCD8Nature immunology
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Sociodemographic Factors and Clinical Conditions Associated to Hospitalization in Influenza A (H1N1) 2009 Virus Infected Patients in Spain, 2009–2010

2012

The emergence and pandemic spread of a new strain of influenza A (H1N1) virus in 2009 resulted in a serious alarm in clinical and public health services all over the world. One distinguishing feature of this new influenza pandemic was the different profile of hospitalized patients compared to those from traditional seasonal influenza infections. Our goal was to analyze sociodemographic and clinical factors associated to hospitalization following infection by influenza A(H1N1) virus. We report the results of a Spanish nationwide study with laboratory confirmed infection by the new pandemic virus in a case-control design based on hospitalized patients. The main risk factors for hospitalizatio…

MaleViral DiseasesPediatricsNon-Clinical MedicinePulmonologyEpidemiology:Named Groups::Persons::Age Groups::Adult::Aged::Aged 80 and over [Medical Subject Headings]Grip A (H1N1):Named Groups::Persons::Age Groups::Adult::Middle Aged [Medical Subject Headings]DiseaseSocial and Behavioral Sciencesmedicine.disease_cause:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Probability::Risk::Risk Factors [Medical Subject Headings]Hospital patients:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]Influenza A Virus H1N1 SubtypeGripe humanaSociologyRisk FactorsPandemicInfluenza A virusChildAged 80 and over:Geographicals::Geographic Locations::Europe::Spain [Medical Subject Headings]:Organisms::Viruses::Vertebrate Viruses::RNA Viruses::Orthomyxoviridae::Influenzavirus A::Influenza A virus::Influenza A Virus H1N1 Subtype [Medical Subject Headings]COPDeducation.field_of_studyMultidisciplinary:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Epidemiologic Study Characteristics as Topic::Epidemiologic Studies::Case-Control Studies [Medical Subject Headings]:Named Groups::Persons::Age Groups::Child::Child Preschool [Medical Subject Headings]QRMiddle AgedHospitalizationInfectious Diseases:Analytical Diagnostic and Therapeutic Techniques and Equipment::Therapeutics::Patient Care::Hospitalization [Medical Subject Headings]Child Preschool:Named Groups::Persons::Age Groups::Adolescent [Medical Subject Headings]MedicineFemalePublic Health:Named Groups::Persons::Age Groups::Infant [Medical Subject Headings]Assistència hospitalàriaResearch ArticleAdultmedicine.medical_specialtyAdolescent:Named Groups::Persons::Age Groups::Adult::Young Adult [Medical Subject Headings]SciencePopulationHospitals -- Pacients:Check Tags::Male [Medical Subject Headings]:Named Groups::Persons::Age Groups::Infant::Infant Newborn [Medical Subject Headings]InfluenzavirusVirusYoung AdultInfluenza HumanSubtipo H1N1 del Virus de la Influenza A:Named Groups::Persons::Age Groups::Adult [Medical Subject Headings]medicineInfluenza virusesHumansEpidemiologia -- Investigació -- EspanyaEspanyaEpidemiologiaeducationPandemicsBiology:Named Groups::Persons::Age Groups::Child [Medical Subject Headings]AgedHospital carePopulation Biologybusiness.industryPublic healthInfant NewbornCase-control studyInfant:Health Care::Environment and Public Health::Public Health::Disease Outbreaks::Epidemics::Pandemics [Medical Subject Headings]medicine.disease:Check Tags::Female [Medical Subject Headings]SpainCase-Control StudiesH1N1 influenza:Diseases::Virus Diseases::RNA Virus Infections::Orthomyxoviridae Infections::Influenza Human [Medical Subject Headings]businessPLoS ONE
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Protective effect of adenylate deaminase (from Penicillium lanoso-viride) against acute infections in mice

1996

We examined the effects of the immunomodulator-adenylate deaminase (E.C. 3.5.4.6) from Penicillium lanoso-viride on experimental mice infections. Prophylactic intraperitoneal administration of adenylate deaminase (ADA) increased survival time and numbers of survivors after infection with Salmonella typhimurium, Pseudomonas aeruginosa and influenza A (H3N2) virus. Protection against influenza virus after intranasal ADA application was also observed. The influence of ADA was time and dose dependent. The most pronounced protection was obtained by administration of 3 U ADA/mice 24 h prior to infection. ADA had no antibiotic effect against these bacterial strains. Protective effects of ADA were …

Salmonella typhimuriumcongenital hereditary and neonatal diseases and abnormalitiesSalmonellamedicine.disease_causeVirusAMP DeaminaseMicrobiologyMicechemistry.chemical_compoundOrthomyxoviridae Infectionsimmune system diseasesCyclosporin amedicineAnimalsMacrophagePseudomonas InfectionsPharmacologyMice Inbred ICRSalmonella Infections AnimalbiologyPseudomonas aeruginosaPenicilliumnutritional and metabolic diseaseshemic and immune systemsbiology.organism_classificationenzymes and coenzymes (carbohydrates)chemistryInfluenza A virusAcute DiseaseImmunologyPenicilliumMice Inbred CBAFemaleNasal administrationTrypan blueImmunopharmacology
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Pandemic influenza A/H1N1 virus in a swine farm house in Sicily, Italy.

2012

This report describes a pandemic A/H1N1 (H1N1 pdm) virus outbreak occurred in December, 2009 in a swine farm used as research facility (Istituto Mediterraneo Trapianti e Terapie ad Alta Specializzazione) for preclinical studies, located in Sicily, Italy. All the 13 pigs of the farm, showed cough, fever, inappetence and weakness. At the same time, an unvaccinated worker of the stabling showed influenza-like symptoms. RNAv extracted from two swabs collected from infected pigs resulted positive by Real Time RT-PCR for Influenza A virus. Furthermore, after growth on embryonated eggs, viral isolates were identified by Real Time RT-PCR specific for H1N1 pdm virus and characterized antigenically. …

Swine DiseasesReverse Transcriptase Polymerase Chain ReactionSwineA/H1N1 viruReal-Time Polymerase Chain ReactionDisease OutbreaksZoonosisInfluenza A Virus H1N1 SubtypeOrthomyxoviridae InfectionsInfluenza HumanAnimalsHumansSequencingFemalePandemicsSicilyPandemic influenza
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A Trans-amplifying RNA Vaccine Strategy for Induction of Potent Protective Immunity

2019

Here, we present a potent RNA vaccine approach based on a novel bipartite vector system using trans-amplifying RNA (taRNA). The vector cassette encoding the vaccine antigen originates from an alphaviral self-amplifying RNA (saRNA), from which the replicase was deleted to form a transreplicon. Replicase activity is provided in trans by a second molecule, either by a standard saRNA or an optimized non-replicating mRNA (nrRNA). The latter delivered 10- to 100-fold higher transreplicon expression than the former. Moreover, expression driven by the nrRNA-encoded replicase in the taRNA system was as efficient as in a conventional monopartite saRNA system. We show that the superiority of nrRNA- ov…

Translational efficiencyGenetic VectorsRNA-dependent RNA polymeraseHemagglutinin (influenza)Hemagglutinin Glycoproteins Influenza VirusBiologyAntibodies ViralMadin Darby Canine Kidney CellsMice03 medical and health sciencesDogsImmunogenicity VaccineInfluenza A Virus H1N1 Subtype0302 clinical medicineOrthomyxoviridae InfectionsCricetinaeInfluenza HumanDrug DiscoveryGeneticsAnimalsHumansViral Replicase Complex ProteinsRepliconMolecular BiologyGene030304 developmental biologyPharmacologyMice Inbred BALB C0303 health sciencesMessenger RNAVaccinationRNATranslation (biology)Antibodies NeutralizingSemliki forest virusVirologyHEK293 CellsInfluenza Vaccines030220 oncology & carcinogenesisbiology.proteinRNA ViralMolecular MedicineFemaleOriginal ArticleMolecular Therapy
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