0000000000599948

AUTHOR

Massimo Bilancia

showing 3 related works from this author

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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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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Association between γ marker, human leucocyte antigens and killer immunoglobulin‐like receptors and the natural course of human cytomegalovirus infec…

2017

Natural killer (NK) cells provide a major defence against cytomegalovirus (HCMV) infection through the interaction of their surface receptors, including the activating and inhibitory killer immunoglobulin-like receptors (KIRs), and human leukocyte antigens (HLA) class I molecules. Also GM allotypes, able to influence the NK antibody-dependent cell-mediated cytotoxicity (ADCC), appear to be involved in the immunological control of virus infections, including HCMV. In some cases, their contribution requires epistatic interaction with other genes of the immune system, such as HLA. In the present report, with the aim to gain insight into the immune mechanisms controlling HCMV, we have studied t…

0301 basic medicineHuman cytomegalovirusGenotypeImmunologyPopulationCytomegalovirusPilot ProjectsHuman leukocyte antigenBiologyCohort Studies03 medical and health sciences0302 clinical medicineImmune systemReceptors KIRHLA Antigenskiller immunoglobulin-like receptormedicineImmunology and AllergyHumanshuman cytomegalovirueducationSicilySettore MED/04 - Patologia GeneraleAntibody-dependent cell-mediated cytotoxicityeducation.field_of_studynatural killerImmunosenescenceOriginal Articlesmedicine.diseaseVirologyγ markerTransplantationKiller Cells Natural030104 developmental biologyLogistic ModelsantibodieImmunologyCytomegalovirus Infectionsbiology.proteinAntibodyBiomarkershuman leucocyte antigen030215 immunology
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