2023
Immune Control in Repeated Babesia microti Infection in a Patient With B-Cell Deficiency
Little J, Oakley M, Thorner A, Johnston D, Majam V, Liakos A, Novack L, Zheng H, Meredith S, Chou C, Newton B, Soiffer R, Krause P, Baden L, Kumar S. Immune Control in Repeated Babesia microti Infection in a Patient With B-Cell Deficiency. Open Forum Infectious Diseases 2023, 11: ofad568. PMID: 38213635, PMCID: PMC10783156, DOI: 10.1093/ofid/ofad568.Peer-Reviewed Original ResearchB-cell deficiencyParasite burdenHuman babesiosisBabesia microti infectionHigher antibody levelsMild clinical symptomsSevere B cell deficiencyB cell populationsT memory stem cellsMemory stem cellsPeak parasite burdenClinical immunityImmune controlImmunologic findingsNK cellsAntibody levelsClinical symptomsMicroti infectionB cellsPatientsSpecific antibodiesStem cellsBabesiosisImmunologyDeficiency
2020
Parasite burden and red blood cell exchange transfusion for babesiosis
O'Bryan J, Gokhale A, Hendrickson JE, Krause PJ. Parasite burden and red blood cell exchange transfusion for babesiosis. Journal Of Clinical Apheresis 2020, 36: 127-134. PMID: 33179803, PMCID: PMC9517950, DOI: 10.1002/jca.21853.Peer-Reviewed Original ResearchConceptsEnd-organ dysfunctionPeak parasitemia levelsRed blood cell exchange transfusionParasitemia levelsExchange transfusionPeak parasitemiaDisease severityParasite burdenYale-New Haven HospitalBabesia microti parasitemiaHigh-grade parasitemiaRetrospective chart reviewBabesia microti infectionNew Haven HospitalAntimicrobial agentsChart reviewHepatic dysfunctionPatient demographicsClinical statusMedian lengthLaboratory indicatorsMicroti infectionDegree of hemolysisNineteen subjectsDysfunctionDifferent distribution of malaria parasite in left and right extremities of vertebrate hosts translates into differences in parasite transmission
Pigeault R, Isaïa J, Yerbanga R, Dabiré K, Ouédraogo J, Cohuet A, Lefèvre T, Christe P. Different distribution of malaria parasite in left and right extremities of vertebrate hosts translates into differences in parasite transmission. Scientific Reports 2020, 10: 10183. PMID: 32576924, PMCID: PMC7311528, DOI: 10.1038/s41598-020-67180-6.Peer-Reviewed Original ResearchConceptsGametocyte densityMosquito infection ratesBlood samplesInfection rateNew malaria control strategiesMajor global causeMalaria control strategiesLow parasite burdenGametocyte burdenGametocyte carriersParasite transmissionPlasmodium infectionMosquito transmission potentialRight extremitiesTransmissible stagesParasite burdenMosquito transmissionMalaria parasitesPlasmodium sppGlobal causeTransmission potentialGametocytesVector-borne diseasesDiseaseExtremities
2019
Impact of Interleukin-27p28 on T and B Cell Responses during Toxoplasmosis
Park J, DeLong JH, Knox JJ, Konradt C, Wojno EDT, Hunter CA. Impact of Interleukin-27p28 on T and B Cell Responses during Toxoplasmosis. Infection And Immunity 2019, 87: 10.1128/iai.00455-19. PMID: 31548322, PMCID: PMC6867838, DOI: 10.1128/iai.00455-19.Peer-Reviewed Original ResearchConceptsIL-27p28IL-27Parasite-specific antibody titersEffector T cell populationsT cell-mediated pathologyCell-mediated pathologyT cell activityReduced parasite burdenT cell populationsB cell responsesCentral nervous systemInterleukin-27Antibody titersMajor inhibitory effectHeterodimeric cytokineParasite replicationImmune serumNervous systemParasite burdenCell responsesCell activityInhibitory effectIntracellular parasitesCell populationsToxoplasmosis
2018
Establishment of a continuous in vitro culture of Babesia duncani in human erythrocytes reveals unusually high tolerance to recommended therapies
Abraham A, Brasov I, Thekkiniath J, Kilian N, Lawres L, Gao R, DeBus K, He L, Yu X, Zhu G, Graham MM, Liu X, Molestina R, Ben Mamoun C. Establishment of a continuous in vitro culture of Babesia duncani in human erythrocytes reveals unusually high tolerance to recommended therapies. Journal Of Biological Chemistry 2018, 293: 19974-19981. PMID: 30463941, PMCID: PMC6311517, DOI: 10.1074/jbc.ac118.005771.Peer-Reviewed Original ResearchConceptsHuman babesiosisBetter therapeutic strategiesHigher parasite burdenTick-borne diseaseFulminant infectionRed blood cellsTherapeutic strategiesHuman erythrocytesParasite burdenClinical casesSevere pathologyHuman red blood cellsNew disease modelsBlood cellsDisease modelsInfectionDiseaseBabesiosisDeathRelevant model systemParasitesApicomplexan parasitesDaughter parasitesErythrocytesFurther researchHematology and Plasma Biochemistry of Wild Spectacled Flying Foxes (Pteropus conspicillatus) in Australia
McMichael L, Edson D, McKeown A, Sánchez C, Mayer D, Kopp S, Meers J, Field H. Hematology and Plasma Biochemistry of Wild Spectacled Flying Foxes (Pteropus conspicillatus) in Australia. Journal Of Wildlife Diseases 2018, 55: 449-454. PMID: 30325258, DOI: 10.7589/2018-04-096.Peer-Reviewed Original ResearchConceptsSpectacled flying foxFlying foxesPteropus conspicillatusFood resource typeVulnerability to extinctionSex cohortsDecreasing habitatAnthropogenic activitiesNorth QueenslandFoxesClimate extremesCleft palate syndromeKnowledge gapsPteropusFar North QueenslandSpeciesAustraliaBaseline dataResource typesBlack flying foxHabitatTick paralysisPlasma biochemistryParasite burdenBiochemistry analytes
2016
An Innovative Field-Applicable Molecular Test to Diagnose Cutaneous Leishmania Viannia spp. Infections
Saldarriaga OA, Castellanos-Gonzalez A, Porrozzi R, Baldeviano GC, Lescano AG, de Los Santos MB, Fernandez OL, Saravia NG, Costa E, Melby PC, Travi BL. An Innovative Field-Applicable Molecular Test to Diagnose Cutaneous Leishmania Viannia spp. Infections. PLOS Neglected Tropical Diseases 2016, 10: e0004638. PMID: 27115155, PMCID: PMC4845993, DOI: 10.1371/journal.pntd.0004638.Peer-Reviewed Original ResearchConceptsMucosal leishmaniasisDiagnostic testsL. braziliensisPrimary health systemL. panamensisRPA-LFSensitive diagnostic testMost endemic regionsMolecular diagnostic testsChronic lesionsReal-time PCRCutaneous leishmaniasisEndemic regionsParasite burdenHealth systemClinical validationLeishmaniasisL. naiffiMolecular testsParasite DNALeishmania sppTime PCRClinical samplesViannia subgenusRecombinase polymerase amplificationLeishmania‐encoded orthologs of macrophage migration inhibitory factor regulate host immunity to promote parasite persistence
Holowka T, Castilho TM, Garcia AB, Sun T, McMahon‐Pratt D, Bucala R. Leishmania‐encoded orthologs of macrophage migration inhibitory factor regulate host immunity to promote parasite persistence. The FASEB Journal 2016, 30: 2249-2265. PMID: 26956417, PMCID: PMC4871794, DOI: 10.1096/fj.201500189r.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntigens, Differentiation, B-LymphocyteApoptosisCD4-Positive T-LymphocytesCloning, MolecularGene DeletionGene Expression RegulationHistocompatibility Antigens Class IILeishmania majorLeishmaniasis, CutaneousMacrophage Migration-Inhibitory FactorsMacrophagesMiceMice, Inbred BALB CMice, Inbred C57BLMice, KnockoutMice, SCIDOrganisms, Genetically ModifiedProtein Array AnalysisProtozoan ProteinsConceptsMacrophage migration inhibitory factorMigration inhibitory factorCD4 T cellsInhibitory factorL. majorT cellsHost immunityProtective CD4 T cellsEffector CD4 T cellsCytokine macrophage migration inhibitory factorMajor-infected miceT cell primingAntigen-presenting cellsT cell formationExpression of IFNDeath-1Functional exhaustionIL-7RHost responseParasite persistenceParasite burdenParasite growthReduced expressionMiceSignificant differencesThe Src kinases Hck, Fgr and Lyn activate Arg to facilitate IgG-mediated phagocytosis and Leishmania infection
Wetzel DM, Rhodes EL, Li S, McMahon-Pratt D, Koleske AJ. The Src kinases Hck, Fgr and Lyn activate Arg to facilitate IgG-mediated phagocytosis and Leishmania infection. Journal Of Cell Science 2016, 129: 3130-3143. PMID: 27358479, PMCID: PMC5004897, DOI: 10.1242/jcs.185595.Peer-Reviewed Original ResearchMeSH KeywordsAniline CompoundsAnimalsCytokinesDisease Models, AnimalImatinib MesylateImmunoglobulin GLeishmaniaLeishmaniasisMacrophagesMiceModels, BiologicalNitrilesParasitesPhagocytosisPhosphorylationProtein-Tyrosine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-hckPyrimidinesQuinolinesRAW 264.7 CellsSignal Transductionsrc-Family KinasesConceptsAmastigote uptakeObligate intracellular parasite LeishmaniaImmunoglobulin-mediated phagocytosisIntracellular parasite LeishmaniaNovel therapeutic strategiesPersistence of infectionLeishmania infectionIgG-mediated phagocytosisTherapeutic strategiesFc receptorsSmall molecule inhibitorsArg activationDisease severityParasite burdenPrimary macrophagesMacrophagesKinase inhibitorsLeishmaniasisHuman hostDevastating diseaseInfectionParasite LeishmaniaSrc family kinasesPhagocytosisLeishmania
2015
Role of the Gut Microbiota of Children in Diarrhea Due to the Protozoan Parasite Entamoeba histolytica
Gilchrist C, Petri S, Schneider B, Reichman D, Jiang N, Begum S, Watanabe K, Jansen C, Elliott K, Burgess S, Z. J, Alam M, Kabir M, Haque R, Petri W. Role of the Gut Microbiota of Children in Diarrhea Due to the Protozoan Parasite Entamoeba histolytica. The Journal Of Infectious Diseases 2015, 213: 1579-1585. PMID: 26712950, PMCID: PMC4837909, DOI: 10.1093/infdis/jiv772.Peer-Reviewed Original ResearchConceptsProtozoan parasite Entamoeba histolyticaParasite Entamoeba histolyticaModerate-to-severe diarrheaPediatric diarrheal diseaseAssociated with protectionAssociated with diarrheaE. histolytica infectionUrban slums of DhakaEtiological agent of amebiasisPopulation-based surveyNatural historyDiarrheaImmunoglobulin ADiarrheal diseaseEtiological agentSlums of DhakaGut microbiotaEstimated 1Sub-Saharan AfricaInfectionParasite burdenE. histolyticaUrban slumsChildrenInfantsParasitological Confirmation and Analysis of Leishmania Diversity in Asymptomatic and Subclinical Infection following Resolution of Cutaneous Leishmaniasis
Rosales-Chilama M, Gongora RE, Valderrama L, Jojoa J, Alexander N, Rubiano LC, Cossio A, Adams ER, Saravia NG, Gomez MA. Parasitological Confirmation and Analysis of Leishmania Diversity in Asymptomatic and Subclinical Infection following Resolution of Cutaneous Leishmaniasis. PLOS Neglected Tropical Diseases 2015, 9: e0004273. PMID: 26659114, PMCID: PMC4684356, DOI: 10.1371/journal.pntd.0004273.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overAsymptomatic InfectionsBlotting, SouthernChildCluster AnalysisColombiaDNA, HelminthDNA, KinetoplastFemaleGenetic VariationGenotypeHumansLeishmaniaLeishmaniasis, CutaneousMaleMiddle AgedMolecular Sequence DataPhylogenyPolymerase Chain ReactionRNA, Small CytoplasmicSequence Analysis, DNASignal Recognition ParticleYoung AdultConceptsCutaneous leishmaniasisSubclinical infectionParasitological confirmationAsymptomatic infectionEndemic areasHistory of CLTest-positive individualsImmunological evidenceViability of LeishmaniaMucosal swab samplesPersistent subclinical infectionMucosal tissue samplesReservoir of infectionActive diseaseLeishmania kDNALeishmania infectionPositive individualsPersistent infectionBlood monocytesParasite burdenInfectionParasite populationsSwab samplesTransmission of diseaseTissue samplesCutaneous leishmaniasis is regulated by Wnt antagonist Dkk-1 from activated platelets (MPF7P.715)
Bothwell A, Chae W, Ehrlich A, Teixeira A, Goldsmith-Pestana K, Maher S, Hwa J, Krause D, McMahon-Pratt D. Cutaneous leishmaniasis is regulated by Wnt antagonist Dkk-1 from activated platelets (MPF7P.715). The Journal Of Immunology 2015, 194: 203.16-203.16. DOI: 10.4049/jimmunol.194.supp.203.16.Peer-Reviewed Original ResearchNeutrophil-platelet aggregate formationDkk-1Cutaneous leishmaniasisLate inflammatory responseSkin inflammatory diseasesT cell differentiationMajor infectionAntigen exposureLymph nodesChronic inflammationTh2 cytokinesInflammatory diseasesInflammatory responseTh2 cellsSkin lesionsSmall molecule inhibitorsParasite burdenGATA-3Functional inhibitionMarked inhibitionLeishmaniasisC-MafHuman plateletsMolecule inhibitorsPlatelets
2012
Novel Approach to In Vitro Drug Susceptibility Assessment of Clinical Strains of Leishmania spp
Fernández O, Diaz-Toro Y, Valderrama L, Ovalle C, Valderrama M, Castillo H, Perez M, Saravia NG. Novel Approach to In Vitro Drug Susceptibility Assessment of Clinical Strains of Leishmania spp. Journal Of Clinical Microbiology 2012, 50: 2207-2211. PMID: 22518860, PMCID: PMC3405580, DOI: 10.1128/jcm.00216-12.Peer-Reviewed Original ResearchConceptsClinical strainsMeglumine antimoniateDrug susceptibilityCell ratioParasite burdenAntileishmanial drugsDrug susceptibility assessmentReduction of infectionParasites/cellIntracellular burdenAntimonial drugsLeishmania panamensisDrug concentrationsEffective dosesHuman macrophagesPresence of drugsL. braziliensisParasite growthHost cell ratioMiltefosineLeishmania sppDrugsL. guyanensisLeishmaniaAntimoniate
2010
Viability and Burden of Leishmania in Extralesional Sites during Human Dermal Leishmaniasis
Romero I, Téllez J, Suárez Y, Cardona M, Figueroa R, Zelazny A, Saravia N. Viability and Burden of Leishmania in Extralesional Sites during Human Dermal Leishmaniasis. PLOS Neglected Tropical Diseases 2010, 4: e819. PMID: 20856851, PMCID: PMC2939031, DOI: 10.1371/journal.pntd.0000819.Peer-Reviewed Original ResearchConceptsLeishmaniasis patientsExtralesional sitesNormal skinTonsil swabsViable parasitesDissemination of LeishmaniaMucocutaneous leishmaniasis patientsMonocyte samplesPositive samplesLuciferase activityParasite viabilitySkin aspiratesActive diseaseDermal leishmaniasisHuman leishmaniasisBlood monocytesEpidemiologic investigationsPatientsLeishmania DNAParasite burdenHuman infectionsIntracellular amastigotesLesionsSwabsEpidemiological significance
2008
Intradermal NKT cell activation during DNA priming in heterologous prime‐boost vaccination enhances T cell responses and protection against Leishmania
Dondji B, Deak E, Goldsmith‐Pestana K, Perez‐Jimenez E, Esteban M, Miyake S, Yamamura T, McMahon‐Pratt D. Intradermal NKT cell activation during DNA priming in heterologous prime‐boost vaccination enhances T cell responses and protection against Leishmania. European Journal Of Immunology 2008, 38: 706-719. PMID: 18286565, PMCID: PMC3448375, DOI: 10.1002/eji.200737660.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntibody FormationAntigens, ProtozoanCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesGalactosylceramidesGenetic VectorsGranzymesImmunity, CellularInterferon-gammaInterleukin-10Killer Cells, NaturalLeishmaniasisLymphocyte ActivationLymphocyte DepletionMiceMice, Inbred BALB CMice, Mutant StrainsNitric OxideProtozoan ProteinsSkinT-LymphocytesVaccinationVaccines, DNAVaccinia virusConceptsHeterologous prime-boost vaccinationPrime-boost vaccinationNKT cell activationCD8 T cellsT cellsCell activationVaccinated miceDNA primingActivated C-kinase (rLACK) antigensT cell immune responsesDevelopment of CD4Murine cutaneous leishmaniasisT cell responsesCell immune responsesElicit protective immunityIL-10Protective immunityImmune responseLeishmania homologueIFN-gammaAlphaGalCerCutaneous leishmaniasisVisceral leishmaniasisParasite burdenCell responses
2004
Efficacy and toxicity of pentavalent antimonials (Glucantime and Pentostam) in an American cutaneous leishmaniasis animal model: luminometry application.
Henao HH, Osorio Y, Saravia NG, Gómez A, Travi B. Efficacy and toxicity of pentavalent antimonials (Glucantime and Pentostam) in an American cutaneous leishmaniasis animal model: luminometry application. Biomédica 2004, 24: 393-402. PMID: 15678803, DOI: 10.7705/biomedica.v24i4.1289.Peer-Reviewed Original ResearchConceptsAnti-Leishmania treatmentNormal serum levelsFirst-line drugsRight hind footSite of injectionParasitological efficacySerum levelsClinical efficacyLesion reductionCure rateLine drugsPentavalent antimonialsSimilar efficacyHepatic alterationsAlanine aminotransferaseLocal toxicityClinical observationsMicroscopic signsTreatment efficacyAnimal modelsHigh dosesLeishmania panamensisAspartate aminotransferaseParasite burdenGlucantime
1996
Disruption of CD40–CD40 Ligand Interactions Results in an Enhanced Susceptibility to Leishmania amazonensis Infection
Soong L, Xu J, Grewal I, Kima P, Sun J, Longley B, Ruddle N, McMahon-Pratt D, Flavell R. Disruption of CD40–CD40 Ligand Interactions Results in an Enhanced Susceptibility to Leishmania amazonensis Infection. Immunity 1996, 4: 263-273. PMID: 8624816, DOI: 10.1016/s1074-7613(00)80434-3.Peer-Reviewed Original ResearchConceptsCD40L-/- miceImmune responseCD40-CD40 ligand interactionCD40L knockout miceLeishmania amazonensis infectionProgressive ulcerative lesionTissue parasite burdenCD40-CD40L interactionCellular immune responsesProtective immune responseWild-type miceHost immune responseImpaired T cellNitric oxide productionAmazonensis infectionUlcerative lesionsInflammatory responseNecrosis factorCD40 ligandT cellsIFN-gammaKnockout miceMacrophage activationParasite burdenOxide production
1995
Leishmania pifanoi amastigote antigens protect mice against cutaneous leishmaniasis
Soong L, Duboise S, Kima P, McMahon-Pratt D. Leishmania pifanoi amastigote antigens protect mice against cutaneous leishmaniasis. Infection And Immunity 1995, 63: 3559-3566. PMID: 7642292, PMCID: PMC173494, DOI: 10.1128/iai.63.9.3559-3566.1995.Peer-Reviewed Original ResearchConceptsBALB/c miceAmastigote antigensC miceImmune responseTh1 cell-mediated immune responseCell-mediated immune responsesCBA/J miceCross-species protectionGamma interferon productionWeeks of infectionAmastigotes of LeishmaniaHost immune responseStage-specific antigensAmazonensis infectionImmunized miceIntraperitoneal injectionJ miceCorynebacterium parvumLeishmaniasis vaccineProliferative responseVaccine potentialCutaneous leishmaniasisParasite burdenInterferon productionAntigen
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