Search results for " present"

showing 10 items of 566 documents

Influence of universal HBV vaccination on chronic HBV infection in Italy: Results of a cross-sectional multicenter study

2017

Background and Aim The universal hepatitis B vaccination for infants and 12-year-old adolescents (the latter limited to the first 12 years of application) was launched in Italy in 1991. Twenty-three years later we evaluated the impact of the vaccination campaign on the burden of HBsAg-positive chronic liver diseases (CLD). Material and Methods 513 HBsAg-positive chronic carriers referring to 16 Italian liver units were investigated and compared with HBsAg carriers enrolled in previous surveys. Results The proportion of inactive carriers decreased from 20.0% in 2001 to 3.3% in 2014, while that of cirrhotic patients increased from 22.6 to 33.2%. Regarding the age class 0–33 (fully covered by …

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Freshly isolated mouse 4F7+ splenic dendritic cells process and present exogenous antigens to T cells.

1994

The antibody 4F7 was reported to recognize an epitope expressed on dendritic cells (DC) from various tissues. To study the ability of splenic 4F7+ dendritic cells to process antigen for presentation to CD4+ T cells, DC were enriched using a separation procedure avoiding overnight culture which could lead to an altered phenotype. These DC were used as antigen-presenting cells (APC) in stimulation cultures of major histocompatibility complex class II-restricted T cells. It was found that they induce antigen-dependent lymphokine production by T cells and therefore could present exogenous antigens. These processing takes place intracellularly, because fixation abrogates presentation to T cells.…

MaleTime FactorsOvalbuminT cellT-LymphocytesImmunologyAntigen presentationAntigen-Presenting CellsCell SeparationIn Vitro TechniquesMicemedicineImmunology and AllergyCytotoxic T cellAnimalsAntigen-presenting cellCells CulturedMice Inbred BALB CCD40biologyAntigen processingHistocompatibility Antigens Class IIAntibodies MonoclonalDendritic cellDendritic CellsNatural killer T cellMolecular biologyCell biologymedicine.anatomical_structureAntigens Surfacebiology.proteinFemalePeptidesSpleenEuropean journal of immunology

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Tumour-like presentation of atypical posterior reversible encephalopathy syndrome with prominent brainstem involvement

2020

Typical posterior reversible encephalopathy syndrome (PRES) is a clinical-neuroradiological entity characterised by bilateral white matter oedema, which is usually symmetrical and totally reversible in 2–3 weeks. A 46-year-old man presented with a persistent headache and visual blurring in the right eye. On admission, the clinical examination revealed minimal unsteadiness of gait and elevated blood pressure. A brain MRI showed a hyperintense signal on T2-weighted sequences in the whole brainstem, extended to the spinal cord (C2–C6), the left insula and the right cerebellum. When his blood pressure was controlled, his symptoms gradually improved. The follow-up MRI scan at 3 weeks revealed a …

Malemedicine.medical_specialtyCerebellumNeurologyNifedipinePhysical examination030218 nuclear medicine & medical imagingWhite matterDiagnosis Differential03 medical and health sciences0302 clinical medicineRamiprilmedicineHumansAntihypertensive AgentsUnusual Presentation of More Common Disease/Injuryneuroimagingmedicine.diagnostic_testbusiness.industryneurologyBrain stem/cerebellumDoxazosinPosterior reversible encephalopathy syndromeGeneral MedicineMiddle AgedSpinal cordmedicine.diseaseCalcium Channel BlockersMagnetic Resonance ImagingWhite Matterradiologymedicine.anatomical_structureSettore MED/26 - NeurologiaRadiologyBrainstemPosterior Leukoencephalopathy SyndromeDifferential diagnosisbusinessneuro-oncology030217 neurology & neurosurgeryBrain Stem

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Identification of calcium sensing receptor (CaSR) mRNA-expressing cells in normal and injured rat brain

2009

Calcium sensing receptor (CaSR), isolated for the first time from bovine and human parathyroid, is a G-protein-coupled receptors that has been involved in diverse physiological functions. At present a complete in vivo work on the identification of CaSR mRNA-expressing cells in the adult brain lacks and this investigation was undertaken in order to acquire more information on cell type expressing CaSR mRNA in the rat brain and to analyse for the first time its expression in different experimental models of brain injury. The expression of CaSR mRNAs was found mainly in scattered cells throughout almost all the brain regions. A double labeling analysis showed a colocalization of CaSR mRNA expr…

Malemedicine.medical_specialtyTime FactorsCentral nervous systemHippocampusCell CountSettore BIO/11 - Biologia MolecolareBiologySettore BIO/09 - Fisiologiachemistry.chemical_compoundSeizuresInternal medicineSettore BIO/10 - BiochimicaCaSRmedicineAnimalsRNA MessengerRats WistarIbotenic AcidMolecular BiologyIn Situ HybridizationNeuronsKainic AcidGeneral NeuroscienceDentate gyrusBrainColocalizationImmunohistochemistryRatsOligodendrogliamedicine.anatomical_structureEndocrinologynervous systemchemistryBrain InjuriesNeurogliaNeurology (clinical)Pyramidal cellCaSR; BrainCalcium sensing receptor (CaSR) isolated for the first time from bovine and human parathyroid is a G-protein-coupled receptors that has been involved in diverse physiological functions. At present a complete in vivo work on the identification of CaSR mRNA-expressing cells in the adult brain lacks and this investigation was undertaken in order to acquire more information on cell type expressing CaSR mRNA in the rat brain and to analyse for the first time its expression in different experimental models of brain injury. The expression of CaSR mRNAs was found mainly in scattered cells throughout almost all the brain regions. A double labeling analysis showed a colocalization of CaSR mRNA expression in neurons and oligodendrocytes whereas it was not found expressed both in the microglia and in astrocytes. One week after kainate-induced seizure CaSR was found in the injured CA3 region of the hippocampus and very interestingly it was found up-regulated in the neurons of CA1-CA2 and dentate gyrus. Similarly 1 week following ibotenic acid injection in the hippocampus CaSR mRNA expression was increased in oligodendrocytes both in the lesioned area and in the contralateral CA1-CA3 pyramidal cell layers and dentate gyrus. One week after needle-induced mechanical lesion an increase of labeled cells expressing CaSR mRNA was observed along the needle track. In conclusion the present results contribute to extend available data on cell type-expressing CaSR in normal and injured brain and could spur to understand the role of CaSR in repairing processes of brain injury.Receptors Calcium-SensingIbotenic acidDevelopmental BiologyAstrocyte

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Non-coordinate synthesis of MHC class II proteins and invariant chains by epidermal Langerhans cells derived from short-term in vitro culture

1994

Epidermal cells (EC) prepared from Lewis rat skin contained 2-3% class II+, LCA+ Langerhans cells (LC). LC enriched from freshly isolated EC suspensions proved highly effective accessory cells when presenting the nominal antigen OVA to an RT1.Bl-restricted ovalbumin (OVA)-specific rat T cell clone. Short-term preculture of the EC resulted in diminished OVA presenting capacity of the LC. Flow cytometry (FCM) analysis of class II and gamma chain expression revealed an up-regulation of class II on the LC's cell surface, consistent with earlier findings in mouse and human. However, while the presence of gamma chains in mouse LC was reported to decline to negligible levels during culture we obse…

Malemedicine.medical_specialtyTime FactorsLangerhans cellCD74OvalbuminT-LymphocytesImmunologyAntigen presentationCD1BiologyFlow cytometryAntigenInternal medicinemedicineAnimalsImmunology and AllergyAntigen-presenting cellCells CulturedAntigen PresentationMHC class IImedicine.diagnostic_testHistocompatibility Antigens Class IIGeneral MedicineFlow CytometryMolecular biologyRatsmedicine.anatomical_structureEndocrinologyRats Inbred LewLangerhans Cellsbiology.proteinFemaleInternational Immunology

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Processing and MHC class I presentation of human cytomegalovirus pp65-derived peptides persist despite gpUS2–11-mediated immune evasion

2007

Immune control of human cytomegalovirus (HCMV) infection can be mediated by CD8+cytolytic T lymphocytes (CTL). Adoptive transfer of antiviral CTL confers protection against HCMV reactivation and disease. The tegument protein pp65 and the immediate-early 1 protein (IE1) are recognized to be major CTL targets, even though during productive infection the viral immunoevasion proteins gpUS2–11 act to suppress major histocompatibility complex (MHC) class I-restricted antigen presentation. Thus it was not clear how infected cells could be labelled with antigenic peptides in the face of immunoevasion. We show here that the immunodominant peptide pp65NLVwas presented by MHC class I in cells infected…

MalevirusesForeskinAntigen presentationCytomegalovirusMice TransgenicBiologyMajor histocompatibility complexCell LineViral Matrix ProteinsMiceImmune systemVirologyHLA-A2 AntigenMHC class IAnimalsHumansAntigen processingHistocompatibility Antigens Class Ivirus diseasesMHC restrictionPhosphoproteinsVirologyPeptide FragmentsCTL*Gene Expression RegulationCytomegalovirus InfectionsImmunologybiology.proteinCD8T-Lymphocytes CytotoxicJournal of General Virology

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L’inclusione vista dagli alunni: costruzione e validazione del questionario per rilevare la qualità inclusiva della scuola

2018

Molti studi nazionali e internazionali si sono concentrati sulla valutazione e sulla promozione della qualità inclusiva della scuola. Si tratta di un argomento complesso, che ha stimolato un ampio dibattito e una varietà di contributi che mettono in luce la necessità di uno strumento in grado di misurare la qualità inclusiva delle nostre scuole, per determinare l’evidenza empirica riguardo a questo tema. L’articolo presenta i risultati di una sperimentazione finalizzata alla redazione di un questionario per la rilevazione della qualità inclusiva del sistema scolastico percepita dagli alunni. Il questionario si pone come uno strumento di valutazione e autovalutazione che permette la misurazi…

Many national and international studies have concentrated on the evaluation and promotion of the inclusive qualities of schools. It is a complex issue which has led to wide debate and a variety of contributions which in turn highlight the need for a tool capable of measuring the inclusive quality of our schools in order to determine the empirical evidence regarding this topic. This article presents the results of an experiment in drafting a questionnaire in order to measure the inclusive quality of the school system perceived by its pupils. The questionnaire is intended as an evaluation and selfevaluation tool that enables the inclusive quality generated by the context to be measured as it is perceived by pupils. At the same time the tool allows reflection processes amongst teachers to be promoted so that they can implement educational activities which contribute to the planning and control of inclusive teaching practices. This contribution puts forward an original tool for measuring the inclusive quality of the school system perceived by pupils attending primary school in several Sicilian towns. It was administered in its definitive version to a sample of 1652 children. The psychometric properties of the tool and the significance it can hold in the areas of planning in research and of educational design are presented in this paper.Settore M-PED/03 - Didattica E Pedagogia Speciale

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A sustainable phenolic compound extraction system from olive oil mill wastewater

2017

Abstract The reduction of environmental impact and the achievement of economic advantages based on by-product recovery is the aim of applying methodologies for phenolic compounds extraction from Olive Oil Mill Wastewater. Volume reduction of Olive Oil Mill Wastewater could generate important advantages in terms of waste disposal cost abatement and, in addition, reuse in the production of foods with health properties could lead to economic benefits. Despite the fact that literature shows that several techniques have been developed, few economic approaches have been presented. This paper assesses the economic feasibility of a system based on membrane filtration and reverse osmosis processes f…

Marginal costEngineeringStrategy and Management010501 environmental sciencesReuse01 natural sciencesNet present valueIndustrial and Manufacturing Engineering0404 agricultural biotechnologySettore ING-IND/17 - Impianti Industriali MeccaniciReverse osmosisMalaxation0105 earth and related environmental sciencesGeneral Environmental ScienceOlive oil mill wastewaters; Phenolic compound; Membrane filtration; Net present value; Payback timeWaste managementRenewable Energy Sustainability and the Environmentbusiness.industryOlive oil mill wastewaters Phenolic compound Membrane filtration Net present value Payback time04 agricultural and veterinary sciences040401 food scienceSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeWastewaterSustainabilitybusinessWaste disposalJournal of Cleaner Production

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Functional Data Analysis for Optimizing Strategies of Cash-Flow Management

2017

The cash management deals with problem of automating and managing cash-flow processes. Optimization of the management processes greatly reduces overall cash handling costs. The present analysis is an empirical study of cash flows, from and to bank branches, deriving an underlying theoretical framework, which can in a reasonable way be connected with the optimal strategy. Functional data analysis is considered an appropriate framework to analyze the dynamics of the time series behavior of cash flows: since the observations are not equally spaced in time and their number is different for each series, they are converted into a collection of random curves in a space spanned by finite dimensiona…

Mathematical optimizationActuarial scienceComputer sciencemedia_common.quotation_subjectCash-flow managementFunctional data analysisNet present valueCash flow forecastingTerminal valueEmpirical researchCashComputingMilieux_COMPUTERSANDSOCIETYCash flowfunctional data analysiCash managementSettore SECS-S/01 - Statisticamedia_commonhigh frequency data

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Smart multi-carrier energy system: Optimised energy management and investment analysis

2016

This paper proposes an optimised Energy Management System for a multi-carrier hub, which integrates two energy distribution networks, for hydrogen and electricity. The economic sustainability of a real-life instantiation of such a system has been analysed as well. The Energy Management System has been developed by means of a multi-objective optimisation algorithm, the Non-dominated Sorting Genetic Algorithm II, implemented using MATLAB®. The achieved results consist in a series of set-points defining the working conditions of the plant for a chosen time horizon. Data provided by this process also show the effectiveness of the adopted optimisation approach. The financial analysis is performe…

Mathematical optimizationEnergy managementSortingTime horizon02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesNet present valueEnergy accounting0104 chemical sciencesSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaEnergy management systemenergy management system hydrogen storageinvestment analysis multi-objective optimisationGenetic algorithmEconomicsCash flow0210 nano-technology2016 IEEE International Energy Conference (ENERGYCON)

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