Search results for "KIR Ligand"

showing 3 items of 3 documents

KIR2DL3 and the KIR ligand groups HLA-A-Bw4 and HLA-C2 predict the outcome of hepatitis B virus infection.

2017

Killer immunoglobulin-like receptors (KIRs) regulate the activation of Natural Killer cells through their interaction with human leukocyte antigens (HLA). KIR and HLA loci are highly polymorphic and certain HLA-KIR combinations have been found to protect against viral infections. In this study we analyzed whether the KIR/HLA repertoire may influence the course of hepatitis B virus (HBV) infection. Fifty-seven subjects with chronic hepatitis B (CHB), 44 subjects with resolved HBV infection, and 60 healthy uninfected controls (HC) were genotyped for KIR and their HLA ligands. The frequency of the HLA-A-Bw4 ligand group was higher in CHB (58%) than subjects with resolved infection (23%) (crude…

0301 basic medicineAdultMaleSettore MED/09 - Medicina InternaGenotypeSettore MED/17 - Malattie InfettiveKIR LigandHuman leukocyte antigenHLA-C AntigensBiologymedicine.disease_cause03 medical and health sciencesYoung Adult0302 clinical medicineHepatitis B ChronicVirologymedicineHumansGenetic Predisposition to DiseaseAlleleReceptorGeneAgedSettore MED/04 - Patologia GeneraleHepatitis B virusHepatologyHLA-A AntigensMiddle AgedVirologyHLA-AKIRs HLAA HBV030104 developmental biologyInfectious DiseasesTreatment OutcomeHLA-B AntigensReceptors KIR2DL3ImmunologyFemalePredictive variables030215 immunology
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The immunoglobulin γ marker 17 allotype and KIR/HLA genes prevent the development of chronic hepatitis B in humans

2020

Hepatitis B virus (HBV) infection causes a self-limiting disease in most individuals. However, < 10% of infected subjects develop a chronic disease. Genetic host variability of polymorphic genes at the interface of innate and acquired immunity, such as killer immunoglobulin-like receptors (KIR), their human leucocyte antigen (HLA) and IgG allotypes (GM), could explain this different clinical picture. We previously showed a protective role of the KIR2DL3 gene for the development of chronic hepatitis B (CHB), and a detrimental role of the KIR ligand groups, HLA-A-Bw4 and HLA-C2. We have expanded the previous analysis genotyping patients for GM23 and GM3/17 allotypes. The comparison of the …

0301 basic medicineHepatitis B virusKIR LigandImmunologyhepatitis B viruHuman leukocyte antigenHLA-C Antigensmedicine.disease_causeRisk Assessment03 medical and health sciences0302 clinical medicineHepatitis B ChronicGene FrequencyImmunoglobulin Gm AllotypesRisk Factorskiller immunoglobulin-like receptorImmunology and AllergyMedicineHumansGenetic Predisposition to DiseaseGenotypingHepatitis B virusSettore MED/04 - Patologia Generalebiologybusiness.industryOriginal ArticlesProtective FactorsAcquired immune systemAllotypeγ marker030104 developmental biologyPhenotypeHLA-B AntigensReceptors KIR2DL3Case-Control StudiesImmunologyHost-Pathogen Interactionsbiology.proteinGene polymorphismAntibodyhepatitis B virus; human leucocyte antigen; killer immunoglobulin-like receptor; ? markerbusiness030215 immunologyhuman leucocyte antigen
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HLA and killer cell immunoglobulin-like receptor (KIRs) genotyping in patients with acute ischemic stroke

2019

Abstract Introduction In humans, a major component of natural killer (NK) and T cell target recognition depends on the surveillance of human leukocyte antigen (HLA) class I molecules by killer immunoglobulin-like receptors (KIRs). Aims To implement the knowledge about the immunological genetic background of acute ischemic stroke susceptibility in relation to the frequency of the KIR genes and HLA alleles. Methods Subjects with acute ischemic stroke and subjects without stroke were genotyped for the presence of KIR genes and of the three major KIR ligand groups, HLA-C1, HLA-C2, and HLA-Bw4, both HLA-B and HLA-A loci. Results Between November 2013 and February 2016, consecutive patients with …

MaleKiller immunoglobulin-like receptors (KIRs)0301 basic medicinemedicine.medical_specialtySettore MED/09 - Medicina InternaNeurologyGenotypeT cellKIR LigandImmunologyKiller-cell immunoglobulin-like receptorchemical and pharmacologic phenomenaHuman leukocyte antigenlcsh:RC346-429Proinflammatory cytokine03 medical and health sciencesCellular and Molecular Neuroscience0302 clinical medicineReceptors KIRotorhinolaryngologic diseasesHumansMedicineGenetic Predisposition to DiseaseReceptorStrokelcsh:Neurology. Diseases of the nervous systemAgedSettore MED/04 - Patologia GeneraleNeuroscience (all)business.industryResearchGeneral NeuroscienceHistocompatibility Antigens Class IMiddle Agedmedicine.diseaseStrokeHLACross-Sectional Studies030104 developmental biologymedicine.anatomical_structureNeurologyImmunologyFemalebusiness030217 neurology & neurosurgeryJournal of Neuroinflammation
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