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RESEARCH PRODUCT

Characterization of a novel population of low-density granulocytes associated with disease severity in HIV-1 infection

Ingrid MüllerMarkus MunderGraham P. TaylorThomas E. ClokePascale Kropf

subject

Enzyme Metabolismlcsh:MedicineHIV InfectionsBiochemistryACTIVATION0302 clinical medicineImmunophenotypingImmunodeficiency VirusesRENAL-CELL CARCINOMAHIV SeropositivityMedicineSUPPRESSOR-CELLSlcsh:ScienceImmune ResponseCD180303 health scienceseducation.field_of_studyMultidisciplinarymedicine.diagnostic_testT Cellsvirus diseasesMiddle Aged3. Good healthEnzymesSEROPOSITIVE PATIENTSArginasemedicine.anatomical_structurePhenotypeHIV epidemiologyDisease ProgressionMedicineInfectious diseasesScience & Technology - Other TopicsNEUTROPHILResearch ArticleAdultGeneral Science & TechnologyT cellImmune CellsPopulationImmunologyCD18Viral diseasesGranulocytePeripheral blood mononuclear cellMicrobiologyFlow cytometryImmunophenotyping03 medical and health sciencesADHERENCEVirologyMD MultidisciplinaryHumanseducationBiology030304 developmental biologyScience & TechnologyArginasebusiness.industryTetraspanin 30MULTIDISCIPLINARY SCIENCESlcsh:RARGINASE-IHIVVirologyENDOTHELIAL-CELLSAntigens CD63ImmunologyLeukocytes Mononuclearlcsh:Qbusiness030215 immunologyGranulocytes

description

The mechanisms resulting in progressive immune dysfunction during the chronic phase of HIV infection are not fully understood. We have previously shown that arginase, an enzyme with potent immunosuppressive properties, is increased in HIV seropositive (HIV+) patients with low CD4(+) T cell counts. Here we show that the cells expressing arginase in peripheral blood mononuclear cells of HIV+ patients are low-density granulocytes (LDGs) and that whereas these cells have a similar morphology to normal-density granulocyte, they are phenotypically different. Importantly, our results reveal that increased frequencies of LDGs correlate with disease severity in HIV+ patients.

yearjournalcountryeditionlanguage
2012-07-17
10.1371/journal.pone.0048939http://hdl.handle.net/10044/1/32210