2020
Profiles of Local and Systemic Inflammation in the Outcome of Treatment of Human Cutaneous Leishmaniasis Caused by Leishmania (Viannia)
Navas A, Fernández O, Gallego-Marín C, del Mar Castro M, Rosales-Chilama M, Murillo J, Cossio A, McMahon-Pratt D, Saravia N, Gómez MA. Profiles of Local and Systemic Inflammation in the Outcome of Treatment of Human Cutaneous Leishmaniasis Caused by Leishmania (Viannia). Infection And Immunity 2020, 88: 10.1128/iai.00764-19. PMID: 31818959, PMCID: PMC7035935, DOI: 10.1128/iai.00764-19.Peer-Reviewed Original ResearchConceptsPeripheral blood mononuclear cellsOutcome of treatmentInnate immune responseCutaneous leishmaniasisTreatment failureCL patientsBiopsy specimensImmune responseResponse of PBMCLocal innate immune responseTreatment of CLBlood mononuclear cellsEnd of treatmentLesion biopsy specimensHuman cutaneous leishmaniasisEfficacy of treatmentGene expression profilesImmune response genesImmune correlatesClinical cureSystemic inflammationPretreatment expressionMeglumine antimoniateMononuclear cellsCare treatment
2014
CD4 T cell activation by B cells in human Leishmania (Viannia)infection
Rodriguez-Pinto D, Saravia NG, McMahon-Pratt D. CD4 T cell activation by B cells in human Leishmania (Viannia)infection. BMC Infectious Diseases 2014, 14: 108. PMID: 24568275, PMCID: PMC3937821, DOI: 10.1186/1471-2334-14-108.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBiotinB-LymphocytesCD4-Positive T-LymphocytesColombiaFemaleFlow CytometryFluorescein-5-isothiocyanateGene Expression RegulationHumansImmunoglobulin MInterferon-gammaInterleukin-6Leishmania braziliensisLeishmaniasis, CutaneousLeukocytes, MononuclearLymphocyte ActivationMaleMiddle AgedOvalbuminTumor Necrosis Factor-alphaYoung AdultConceptsCD4 T cellsCutaneous leishmaniasis patientsT cellsB cellsLeishmaniasis patientsT cell activationLeishmania antigenImmune responseCell activationT-cell activation parametersSpecific CD4 T cellsEffective adaptive immune responseCD4 T cell activationB-cell activation markersCultures of PBMCUpregulation of CD86Cell activation markersCostimulatory molecule CD86Activation markers CD25Adaptive immune responsesHuman cutaneous leishmaniasisPurified B cellsT cell culturesHuman B cell linesHuman B cells
2013
Detection of Leishmania RNA Virus in Leishmania Parasites
Zangger H, Ronet C, Desponds C, Kuhlmann FM, Robinson J, Hartley MA, Prevel F, Castiglioni P, Pratlong F, Bastien P, Müller N, Parmentier L, Saravia NG, Beverley SM, Fasel N. Detection of Leishmania RNA Virus in Leishmania Parasites. PLOS Neglected Tropical Diseases 2013, 7: e2006. PMID: 23326619, PMCID: PMC3542153, DOI: 10.1371/journal.pntd.0002006.Peer-Reviewed Original ResearchConceptsLeishmania RNA virusCutaneous leishmaniasisSkin lesionsPresence of LRVHyper-inflammatory immune responsePrimary skin lesionsUlcerated skin lesionsOverall exacerbationsSignificant morbidityInfected miceLesion biopsyRNA virusesSecondary lesionsImmune responseHigh riskNew World Leishmania speciesAggressive phenotypeLeishmania strainsLeishmania parasitesPatient samplesViral detectionMonoclonal antibodiesNasopharyngeal tissuesParasite strainsMetastatic phenotype
2012
Human Macrophage Response to L. (Viannia) panamensis: Microarray Evidence for an Early Inflammatory Response
Ramírez C, Díaz-Toro Y, Tellez J, Castilho TM, Rojas R, Ettinger NA, Tikhonova I, Alexander ND, Valderrama L, Hager J, Wilson ME, Lin A, Zhao H, Saravia NG, McMahon-Pratt D. Human Macrophage Response to L. (Viannia) panamensis: Microarray Evidence for an Early Inflammatory Response. PLOS Neglected Tropical Diseases 2012, 6: e1866. PMID: 23145196, PMCID: PMC3493378, DOI: 10.1371/journal.pntd.0001866.Peer-Reviewed Original ResearchConceptsMRNA abundance profilesMonocyte-derived macrophagesRegulation of genesDistinct biologic responsesAbundance profilesL. panamensisDifferential gene expressionEarly time pointsMacrophage responseEarly macrophage responseImmune responseLeishmania speciesHuman monocyte-derived macrophagesMicroarray evidenceOutset of infectionGene regulationActivation of PKCHuman macrophage responseGene expressionLeishmania panamensis infectionTime pointsCellular responsesAdaptive immune responsesG proteinsEarly inflammatory response
2010
Murine model of chronic L. (Viannia) panamensis infection: Role of IL‐13 in disease
Castilho TM, Goldsmith‐Pestana K, Lozano C, Valderrama L, Saravia NG, McMahon‐Pratt D. Murine model of chronic L. (Viannia) panamensis infection: Role of IL‐13 in disease. European Journal Of Immunology 2010, 40: 2816-2829. PMID: 20827674, PMCID: PMC3289133, DOI: 10.1002/eji.201040384.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAnimalsChronic DiseaseDisease Models, AnimalEnzyme-Linked Immunosorbent AssayFemaleHumansInterferon-gammaInterleukin-13LeishmaniaLeishmaniasis, CutaneousMaleMiceMice, Inbred BALB CMice, KnockoutMiddle AgedReceptors, Interleukin-4Th1 CellsTh2 CellsTumor Necrosis Factor-alphaYoung AdultConceptsL. panamensis infectionsIL-13Panamensis infectionChronic diseasesImmunodeficient miceMurine modelMixed Th1/Th2 responseBALB/c mouse modelTh1/Th2 responsePrevalent etiologic agentHuman cutaneous leishmaniasisPresence of TNFPrevention of leishmaniasisIL-17Immunological mechanismsTh2 responsesIL-10Recurrent lesionsChronic infectionEvident lesionsMice resemblesT cellsImmune responsePersistent infectionLeishmania organisms
2007
Treponema pallidum Elicits Innate and Adaptive Cellular Immune Responses in Skin and Blood during Secondary Syphilis: A Flow-Cytometric Analysis
Salazar JC, Cruz AR, Pope CD, Valderrama L, Trujillo R, Saravia NG, Radolf JD. Treponema pallidum Elicits Innate and Adaptive Cellular Immune Responses in Skin and Blood during Secondary Syphilis: A Flow-Cytometric Analysis. The Journal Of Infectious Diseases 2007, 195: 879-887. PMID: 17299719, PMCID: PMC2131710, DOI: 10.1086/511822.Peer-Reviewed Original ResearchConceptsCellular immune responsesPeripheral bloodT cellsSecondary syphilisBlister fluidImmune responseControl subjectsDC-specific intercellular adhesion molecule 3DC-SIGNSystemic cellular immune responsesAdaptive cellular immune responsesEpidermal suction blistersIntercellular adhesion molecule 3Plasmacytoid dendritic cellsDermal T cellsHealthy control subjectsHuman leukocyte antigenActivation marker CD69Adaptive immune responsesMonocytes/macrophagesFlow cytometric analysisDermal leukocytesLeukocyte immunophenotypesHIV coreceptorsDendritic cells
2006
Comparative immunohistological analysis of the Montenegro skin test reaction in asymptomatic infection and in acute and chronic cutaneous leishmaniasis
Guarín N, Palma G, Pirmez C, Valderrama L, Tovar R, Saravia NG. Comparative immunohistological analysis of the Montenegro skin test reaction in asymptomatic infection and in acute and chronic cutaneous leishmaniasis. Biomédica 2006, 26: 38-48. PMID: 17361840, DOI: 10.7705/biomedica.v26i1.1498.Peer-Reviewed Original ResearchConceptsSkin test reactionsMontenegro skin testSkin testChronic lesionsAcute lesionsAsymptomatic infectionT lymphocytesImmune responseB cellsComparative immunohistological analysisProportion of CD4Chronic cutaneous leishmaniasisType hypersensitivity reactionCellular immune responsesSkin test sitesTest reactionsLeishmaniasis lesionsCellular infiltrateHypersensitivity reactionsLeishmania infectionChronic diseasesInflammatory responseChronic patientsT cellsCutaneous leishmaniasisResistance to Antimony and Treatment Failure in Human Leishmania (Viannia) Infection
Rojas R, Valderrama L, Valderrama M, Varona MX, Ouellette M, Saravia NG. Resistance to Antimony and Treatment Failure in Human Leishmania (Viannia) Infection. The Journal Of Infectious Diseases 2006, 193: 1375-1383. PMID: 16619185, DOI: 10.1086/503371.Peer-Reviewed Original ResearchConceptsTreatment failureMeglumine antimoniatePrimary resistanceAntimonial drugsSecondary resistanceDrug resistanceHuman Leishmania infectionsEffective immune responseAnthroponotic visceral leishmaniasisAmerican cutaneous leishmaniasisAntimonial therapyStandard treatmentCutaneous diseaseLeishmania infectionTherapeutic responseImmune responseCutaneous leishmaniasisVisceral leishmaniasisAnthroponotic transmissionResistant organismsEffective doseIntracellular amastigotesSusceptible strainsAntimoniatePatients
2002
Gender Is a Major Determinant of the Clinical Evolution and Immune Response in Hamsters Infected with Leishmania spp
Travi BL, Osorio Y, Melby PC, Chandrasekar B, Arteaga L, Saravia NG. Gender Is a Major Determinant of the Clinical Evolution and Immune Response in Hamsters Infected with Leishmania spp. Infection And Immunity 2002, 70: 2288-2296. PMID: 11953362, PMCID: PMC127932, DOI: 10.1128/iai.70.5.2288-2296.2002.Peer-Reviewed Original ResearchConceptsFemale animalsGender-related differencesMale animalsImmune responseInterleukin-4Lesion sizeDistant cutaneous sitesPermissive immune responsePrepubertal male animalsSevere cutaneous lesionsSex hormone statusLeishmania sppTGF-beta mRNASeverity of diseaseAdult male animalsGreater lesion sizeGrowth factor betaGreater parasite burdenIntralesional expressionCutaneous sitesIL-10Lymph nodesChronic lesionsClinical evolutionCutaneous infections
2000
Distinct Innate and Acquired Immune Responses to Leishmania in Putative Susceptible and Resistant Human Populations Endemically Exposed to L. (Viannia) panamensis Infection
Bosque, Saravia, Valderrama, Milon. Distinct Innate and Acquired Immune Responses to Leishmania in Putative Susceptible and Resistant Human Populations Endemically Exposed to L. (Viannia) panamensis Infection. Scandinavian Journal Of Immunology 2000, 51: 533-541. PMID: 10792848, DOI: 10.1046/j.1365-3083.2000.00724.x.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAnimalsCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesCells, CulturedDisease SusceptibilityEndemic DiseasesFemaleHumansHypersensitivity, DelayedImmunity, InnateInterferon-gammaInterleukin-10Leishmania guyanensisLeishmaniasis, MucocutaneousMacrophagesMaleMiddle AgedMonocytesRecombinant ProteinsRecurrenceRisk FactorsTritiumTumor Necrosis Factor-alphaConceptsPeripheral blood mononuclear cellsRecurrent diseaseL. panamensis infectionsCD8 T lymphocytesType hypersensitivity responseBlood mononuclear cellsAcquired Immune ResponsesTumor necrosis factorProduction of interferonEntry of parasitesLeishmania Viannia panamensisPanamensis infectionRecurrent leishmaniasisHypersensitivity responseImmunological basisSkin testMononuclear cellsNecrosis factorT lymphocytesImmune responseSubclinical infectionLinear regression analysisEvidence of differencesDistinct innateIntracellular amastigotes
1991
Correlation between histopathology, immune response, clinical presentation, and evolution in Leishmania braziliensis infection.
Gutierrez Y, Salinas G, Palma G, Valderrama L, Santrich C, Saravia N. Correlation between histopathology, immune response, clinical presentation, and evolution in Leishmania braziliensis infection. American Journal Of Tropical Medicine And Hygiene 1991, 45: 281-9. PMID: 1928562, DOI: 10.4269/ajtmh.1991.45.281.Peer-Reviewed Original ResearchConceptsPresence of amastigotesImmune responseClinical presentationLeishmania-specific immune responseAbsence of amastigotesPresence of epithelioidLymphocyte transformation responsesPresence of granulomasRole of antibodiesCellular immune responsesPresence of eosinophilsSerum antibody titersLeishmania braziliensis infectionPresence of LeishmaniaLeishmanial lesionsBraziliensis infectionCellular infiltrateType hypersensitivityClinical parametersActive lesionsAntibody titersEvolution of diseaseSoluble mediatorsTegumentary leishmaniasisEpitheloid cells
1989
The Relationship of Leishmania braziliensis Subspecies and Immune Response to Disease Expression in New World Leishmaniasis
Saravia N, Valderrama L, Labrada M, Holguin A, Navas C, Palma G, Weigle K. The Relationship of Leishmania braziliensis Subspecies and Immune Response to Disease Expression in New World Leishmaniasis. The Journal Of Infectious Diseases 1989, 159: 725-735. PMID: 2647862, DOI: 10.1093/infdis/159.4.725.Peer-Reviewed Original ResearchMeSH KeywordsAnalysis of VarianceAnimalsAntibodies, ProtozoanAntigens, ProtozoanDose-Response Relationship, ImmunologicFluorescent Antibody TechniqueHost-Parasite InteractionsHumansHypersensitivity, DelayedImmune SeraImmunity, CellularKineticsLeishmaniaLeishmania braziliensisLeishmaniasisLeishmaniasis, MucocutaneousLymphocyte ActivationRegression AnalysisConceptsCutaneous DTHLeishmania antigenBraziliensis infectionTegumentary leishmaniasisIFAT titersDisease formsVitro lymphocyte proliferative responseCutaneous DTH responseHuman tegumentary leishmaniasisL. braziliensis infectionLymphocyte proliferative responsesImmune response parametersHigher IFAT titersNew World leishmaniasisPanamensis infectionDTH responseMucocutaneous diseaseClinical presentationLesion durationCutaneous diseaseDisease presentationImmune mechanismsImmune responseProliferative responseTime of evolution
1987
Measles vaccine failure after documented seroconversion
REYES M, DE BORRERO M, ROA J, BERGONZOLI G, SARAVIA N. Measles vaccine failure after documented seroconversion. The Pediatric Infectious Disease Journal 1987, 6: 848-850. PMID: 3670952, DOI: 10.1097/00006454-198709000-00012.Peer-Reviewed Original ResearchConceptsMeasles vaccine failureSecondary vaccine failureVaccine failureOutcome of immunizationPersistent maternal antibodiesPrimary vaccine failureAttenuated vaccine virusInitial seroconversionInadequate immunizationMaternal antibodiesMeasles antibodyVaccine efficacyVirus neutralization testingImmune responseVaccine virusApparent infectionImmunologic dataNeutralization testingProtective responseMeasles virusSecondary responseWild-type virusSeroconversionVaccinationInfection