Search results for "HLA-DQ Antigen"

showing 10 items of 18 documents

Body Mass Index and Associated Clinical Variables in Patients with Non-Celiac Wheat Sensitivity.

2019

Background: Non-Celiac Wheat Sensitivity (NCWS) is still a largely undefined condition, due to the lack of a diagnostic marker. Few data are available about the nutritional characteristics of NCWS patients at diagnosis. Aims: To evaluate the proportion of NCWS patients who were underweight, normal weight, overweight, or obese at diagnosis, and to search for possible correlations between their Body Mass Index (BMI) and other NCWS-related disease characteristics. Patients and Methods: The clinical charts of 145 NCWS patients (125 F, 20 M, mean age 37.1 &plusmn

0301 basic medicineAdultMalemedicine.medical_specialtySettore MED/09 - Medicina InternaClinical variablesHLA haplotypelcsh:TX341-641autoimmune diseaseAutoimmunityDiseaseWheat HypersensitivityOverweightBody Mass Index (BMI)GastroenterologyArticleBody Mass IndexCeliac Disease (CD)03 medical and health sciencesIrritable Bowel Syndrome (IBS)0302 clinical medicineThinnessWeight lossInternal medicineHLA-DQ AntigensmedicineHumansIn patientautoimmune diseasesIrritable bowel syndromeRetrospective StudiesNutrition and Dieteticsbusiness.industrynutritional and metabolic diseasesMiddle AgedOverweightmedicine.diseasePrognosis030104 developmental biologyHaplotypesnon-celiac wheat sensitivity (NCWS)030211 gastroenterology & hepatologyFemalemedicine.symptomUnderweightbusinesslcsh:Nutrition. Foods and food supplyBody mass indexFood ScienceNutrients
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Tetramer visualization of gut-homing gluten-specific T cells in the peripheral blood of celiac disease patients

2007

Tetramers of MHC–peptide complexes are used for detection and characterization of antigen-specific T cell responses, but they require knowledge about both antigenic peptide and the MHC restriction element. The successful application of these reagents in human diseases involving CD4 + T cells is limited. Celiac disease, an intestinal inflammation driven by mucosal CD4 + T cells recognizing wheat gluten peptides in the context of disease-associated HLA-DQ molecules, is an ideal model to test the potential clinical use of these reagents. We investigated whether gluten-specific T cells can be detected in the peripheral blood of celiac disease patients using DQ2 tetramers. Nine DQ2 + patients a…

AdultGlutensT-LymphocytesT cellCellular differentiationBiologyInterferon-gammaHLA-DQ AntigensmedicineHumansInterferon gammaProtein Structure QuaternaryAgedchemistry.chemical_classificationMultidisciplinaryHLA-DQ Antigennutritional and metabolic diseasesCell DifferentiationBreadBiological SciencesMiddle AgedMHC restrictionGlutendigestive system diseasesStainingGastrointestinal TractCeliac DiseasePhenotypemedicine.anatomical_structurechemistryCase-Control StudiesImmunologyLeukocytes MononuclearHoming (hematopoietic)medicine.drugProceedings of the National Academy of Sciences
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HLA-DRB1*1301 AND *1302 protect against chronic hepatitis B

1997

Abstract Background/Aims: The outcome of acute hepatitis B infection may be influenced by host factors like the major histocompatibility complex (MHC). We have investigated MHC class I and class II antigens in patients with chronic hepatitis B compared to a healthy control population. To confirm the findings of this first study we performed a second study in a group of subjects who had spontaneously recovered from acute hepatitis B infection. Methods: Frequencies of MHC class I and class II antigens were analyzed in patients with chronic hepatitis B virus infection and in control subjects. MHC class I typing was done by standard microlymphocytotoxicity assays. DRB1 and DQA1 genotypes were d…

AdultHepatitis B virusRemission SpontaneousPopulationEnzyme-Linked Immunosorbent AssayMajor histocompatibility complexmedicine.disease_causePolymerase Chain ReactionHLA-DQ alpha-ChainsVirusHLA-DQ AntigensMHC class ImedicineHumansSerologic TestsProspective StudiesHepatitis B AntibodieseducationHLA-DRB1AllelesHepatitis B viruseducation.field_of_studyMHC class IIHepatitis B Surface AntigensHepatologybiologyHLA-DR AntigensHepatitis BVirologyChronic infectionImmunoglobulin GChronic DiseaseDNA ViralImmunologybiology.proteinHLA-DRB1 ChainsJournal of Hepatology
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Gluten Stimulation Induces an in vitro Expansion of Peripheral Blood Tγδ Cells from HLA-DQ2-Positive Subjects of Families of Patients with Celiac Dis…

1998

The intestinal gluten sensitivity formally known as celiac disease (CD) is characterized by an evident involvement of local immune response and it is associated with the expression of HLA-DQ2 allele. The major role in the disease seems to be played by the T lymphocyte population bearing gamma delta T cell receptor (T gamma delta cells) which are increased both in peripheral blood and intestinal mucosae of celiac patients. In this paper data on the effects of in vitro gluten stimulation on lymphocytes expressing the T gamma delta phenotype are reported. Gluten seems to be able to induce the expansion of the T gamma delta cell population both in CD patients and their HLA-DQ2-positive asymptom…

AdultMaleAdolescentGlutensT-LymphocytesImmunologyEnzyme-Linked Immunosorbent AssayStimulationDiseasePolymerase Chain ReactionImmune systemHLA-DQ AntigensGeneticsHumansMedicineReceptors ImmunologicAlleleChildCells CulturedGenetics (clinical)chemistry.chemical_classificationbusiness.industryHLA-DQ2nutritional and metabolic diseasesMiddle AgedGlutendigestive system diseasesIn vitroPeripheral bloodCeliac DiseasePhenotypechemistryChild PreschoolImmunologyLeukocytes MononuclearFemaleInterleukin-4businessExperimental and Clinical Immunogenetics
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Early onset of polyglandular failure is associated with HLA-DRB1*03.

2008

ObjectivesPolyglandular failure or autoimmunity (PGA) involves at least two endocrine diseases. Several genes may play a role in its etiology. This study analyzed 1) whether HLA-DRB1, HLA-DQB1, and MHC class I chain-related gene A (MICA) polymorphisms are associated in PGA and 2) whether PGA patients display stronger associations with these immune genes than patients with monoglandular autoimmunity (MGA).DesignAssociation study.MethodsHLA-DRB1, HLA-DQB1, and MICA alleles were analyzed in 73 patients with PGA, 283 with MGA, and 206 healthy controls. The HLA-DRB1 and HLA-DQB1 polymorphisms were determined with PCR-amplified DNA being hybridized with PCR-sequence-specific oligonucleotide probe…

AdultMalemedicine.medical_specialtyAdolescentGenotypeEndocrinology Diabetes and MetabolismBiologymedicine.disease_causePolymerase Chain Reactionlaw.inventionAutoimmunityEndocrinologyGene FrequencylawInternal medicineGermanyHLA-DQ AntigensmedicineHLA-DQ beta-ChainsHumansGenetic Predisposition to DiseaseAlleleAge of OnsetChildPolyendocrinopathies AutoimmuneGeneHLA-DRB1Polymerase chain reactionAllelesPolymorphism GeneticHistocompatibility Antigens Class IGeneral MedicineHLA-DR AntigensMiddle AgedEndocrinologyGenetic markerMicrosatelliteFemaleAge of onsetHLA-DRB1 ChainsEuropean journal of endocrinology
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High Proportions of People With Nonceliac Wheat Sensitivity Have Autoimmune Disease or Antinuclear Antibodies.

2015

BACKGROUND & AIMS: There is much interest in wheat sensitivity among people without celiac disease (CD), but little is known about any risks associated with the condition. We evaluated the prevalence of autoimmune diseases (ADs) among patients with nonceliac wheat sensitivity (NCWS), and investigated whether they carry antinuclear antibodies (ANA). METHODS: We performed a retrospective study of 131 patients diagnosed with NCWS (121 female; mean age, 29.1 years) at 2 hospitals in Italy from January 2001 through June 2011. Data were also collected from 151 patients with CD or irritable bowel syndrome (IBS) (controls). Patient medical records were reviewed to identify those with ADs. We al…

AdultMalemedicine.medical_specialtySettore MED/09 - Medicina InternaAnti-nuclear antibodyNonceliac Wheat Sensitivity; Autoimmune Disease; Antinuclear Antibodies.Nonceliac Wheat SensitivityWheat HypersensitivityAutoimmune DiseaseThyroiditisAutoimmune DiseasesRisk FactorsInternal medicineHLA-DQ AntigensmedicinePrevalenceHumansProspective StudiesProspective cohort studyIrritable bowel syndromeRetrospective StudiesAutoimmune diseaseAntinuclear Antibodies.Hepatologybusiness.industryMedical recordGastroenterologyHLA-DQ2Retrospective cohort studyMiddle Agedmedicine.diseaseCeliac DiseaseHaplotypesItalyAntibodies AntinuclearImmunologyFemalebusinessBiomarkersGastroenterology
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Analysis of TCR Vbeta repertoire and cytokine gene expression in patients with idiopathic dilated cardiomyopathy

2001

Although the etiopathogenesis of idiopathic dilated cardiomyopathy (IDC) is still unclear, it is widely accepted that a complex interplay between viral infections and immune mechanisms is the basis of disease genesis. Previously, we showed that heart-infiltrating T cells of patients suffering from acute, fulminant Coxsackie virus B3+-IDC shared a preferential usage of three variable gene segments of the T cell receptor beta chain-(TCR-Vbeta) encoding families Vbeta3, 7 and 13.1. This indicated the possible presence of a superantigen-driven immune response. Here, we further investigated the IDC immunological scenario by analysing different phenotypes of heart-infiltrating cells: TCR repertoi…

Cardiomyopathy DilatedInterleukin 2MyocarditisCD8 AntigensReceptors Antigen T-Cell alpha-betaT cellImmunologyCardiomyopathyGene Expressionchemical and pharmacologic phenomenaPicornaviridaeBiologyHLA-DQ alpha-ChainsImmunoenzyme TechniquesInterferon-gammaImmune systemAntigenHLA-DQ AntigensIdiopathic dilated cardiomyopathymedicineHLA-DQ beta-ChainsHumansImmunology and AllergyRNA MessengerAntigens ViralInterleukin-6Reverse Transcriptase Polymerase Chain ReactionHistocompatibility TestingMyocardiumIDC cytokines immune mechanismsmedicine.diseaseEnterovirus B HumanMyocarditismedicine.anatomical_structureCD4 AntigensImmunologyLeukocytes MononuclearCytokinesInterleukin-2Interleukin-4CD8Interleukin-1medicine.drug
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Analysis of HLA-DQA, HLA-DQB frequencies in a group of Sardinian centenarians

2006

Human leukocyte antigen (HLA) alleles, regulating type and intensity of the immune response, might influence life expectancy. In previous case-control studies the authors have demonstrated that both HLA-DR and -DQ alleles are not associated with longevity in the Sardinian population. On the other hand, association studies are subjected (as part of the homogeneity of the population in terms of geographic origin) to a number of possible confounding factors. Therefore, the authors typed the HLA-DQA1 and HLA-DQB1 alleles in 24 sibs (age range 85 to 97) of 17 centenarians by PCR-SSP. Sib pair analysis showed non-significant differences between the observed and expected percentage of DQA* or DQB1…

GeneticsAged 80 and overAgingeducation.field_of_studymedia_common.quotation_subjectPopulationConfoundingLongevityLongevityAnalysis of HLA-DQA HLA-DQBHuman leukocyte antigenBiologyHLA-DQ alpha-ChainsHLA-DQ AntigensTraitHLA-DQ beta-ChainsHumansGeriatrics and GerontologyAlleleAllele sharingeducationAllelesmedia_commonGenetic association
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MHC class II genes influence the susceptibility to chronic active hepatitis C

1997

Chronic hepatitis C develops in more than 70% of hepatitis C virus infected subjects. Viral factors influence the disease course, but little is known about the importance of host factors.Frequencies of major histocompatibility complex (MHC) class I and class II antigens were analyzed in two groups of patients with chronic hepatitis C virus infection and in control subjects. MHC class I typing was done by standard microlymphocytotoxicity assays. DRB1 and DQA1 genotyping was done by PCR based typing methods.DRB1*0301 was found in 26 of 75 patients with chronic hepatitis C virus infection (34.7%) and in 12 of 101 control subjects (11.9%) (relative risk 3.9; p0.001). Homozygosity for this allel…

GenotypeHepatitis C virusGenes MHC Class IIBiologymedicine.disease_causePolymerase Chain ReactionHLA-DQ alpha-ChainsVirusMHC Class II GeneReference ValuesHLA-DQ AntigensMHC class ImedicineHumansGenetic Predisposition to DiseaseAllelesAntilymphocyte SerumHepatitis ChronicHepatitisMHC class IIHepatologyHistocompatibility Antigens Class IHomozygoteHistocompatibility Antigens Class IIHLA-DR AntigensHepatitis Cmedicine.diseaseHepatitis CVirologyHistocompatibilityImmunologyDisease Progressionbiology.proteinDisease SusceptibilityHLA-DRB1 ChainsJournal of Hepatology
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Gluten Degrading Enzymes for Treatment of Celiac Disease

2020

Celiac disease (CeD) affects about 1% of most world populations. It presents a wide spectrum of clinical manifestations, ranging from minor symptoms to mild or severe malabsorption, and it may be associated with a wide variety of autoimmune diseases. CeD is triggered and maintained by the ingestion of gluten proteins from wheat and related grains. Gluten peptides that resist gastrointestinal digestion are antigenically presented to gluten specific T cells in the intestinal mucosa via HLA-DQ2 or HLA-DQ8, the necessary genetic predisposition for CeD. To date, there is no effective or approved treatment for CeD other than a strict adherence to a gluten-free diet, which is difficult to maintain…

Male0301 basic medicineProteasesGlutensDrug CompoundingT-Lymphocytesenzyme therapylcsh:TX341-641ReviewBiologyDiet Gluten-Free03 medical and health sciences0302 clinical medicineAntigenIntestinal mucosaglutenasewheatHLA-DQ AntigensEnzyme StabilityGenetic predispositionHumansGenetic Predisposition to Diseaseenteric coatingSubtilisinsendopeptidasechemistry.chemical_classificationNutrition and Dieteticstreatmentfungiautoimmunitynutritional and metabolic diseasesGlutendigestive system diseasesGlutamine030104 developmental biologyEnzymeBiochemistrychemistryglutenProteolysisFemale030211 gastroenterology & hepatologyProlyl OligopeptidasesSubtilisinslcsh:Nutrition. Foods and food supplyceliac diseaseFood ScienceNutrients
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