2020
CXCL10 Signaling Contributes to the Pathogenesis of Arthritogenic Alphaviruses
Lin T, Geng T, Harrison AG, Yang D, Vella AT, Fikrig E, Wang P. CXCL10 Signaling Contributes to the Pathogenesis of Arthritogenic Alphaviruses. Viruses 2020, 12: 1252. PMID: 33147869, PMCID: PMC7692144, DOI: 10.3390/v12111252.Peer-Reviewed Original ResearchConceptsChikungunya virusAlphaviral arthritisArthritogenic alphavirusesLargest immune cell populationMacrophages/T cellsImmune cell populationsInflammatory immune responseLow viral loadWild-type miceO'nyong-nyong virusWild-type animalsRheumatic manifestationsImmune infiltratesViral loadT cellsImmune responseAlphaviral diseaseArthritic diseasesTherapeutic targetCXCL10PathogenesisViral RNACell populationsArthritisFootpad
2009
Passage through Ixodes scapularis Ticks Enhances the Virulence of a Weakly Pathogenic Isolate of Borrelia burgdorferi
Adusumilli S, Booth CJ, Anguita J, Fikrig E. Passage through Ixodes scapularis Ticks Enhances the Virulence of a Weakly Pathogenic Isolate of Borrelia burgdorferi. Infection And Immunity 2009, 78: 138-144. PMID: 19822652, PMCID: PMC2798202, DOI: 10.1128/iai.00470-09.Peer-Reviewed Original ResearchConceptsIxodes scapularis ticksCommon tick-borne illnessScapularis ticksTick-borne illnessB. burgdorferi sensu strictoC3H miceBurgdorferi sensu strictoLyme diseaseMiceHigh expression levelsBorrelia burgdorferiB. burgdorferiTick engorgementExpression levelsSpirochetesDiseaseArray analysisSyringe inoculationBurgdorferiPathogenic isolatesIsolatesI. scapularisArthritisVirulencePathogenesis
2007
Borrelia burgdorferi basic membrane proteins A and B participate in the genesis of Lyme arthritis
Pal U, Wang P, Bao F, Yang X, Samanta S, Schoen R, Wormser GP, Schwartz I, Fikrig E. Borrelia burgdorferi basic membrane proteins A and B participate in the genesis of Lyme arthritis. Journal Of Experimental Medicine 2007, 205: 133-141. PMID: 18166585, PMCID: PMC2234379, DOI: 10.1084/jem.20070962.Peer-Reviewed Original ResearchConceptsLyme arthritisMouse jointsB. burgdorferi antigensBurgdorferi-infected miceSevere arthritisSpirochete numbersArthritisHost responseLyme diseaseAffinity-purified antibodiesBorrelia burgdorferiChain reactionMiceOriginal phenotypeBasic membrane proteinMutant spirochetesGene expressionJointsInflammationPathogenesisAntigenDiseaseB. burgdorferi gene expression
2006
Coinfection with Borrelia burgdorferi sensu stricto and Borrelia garinii alters the course of murine Lyme borreliosis
Hovius JW, Li X, Ramamoorthi N, Van Dam AP, Barthold SW, Van Der Poll T, Speelman P, Fikrig E. Coinfection with Borrelia burgdorferi sensu stricto and Borrelia garinii alters the course of murine Lyme borreliosis. Pathogens And Disease 2006, 49: 224-234. PMID: 17328756, DOI: 10.1111/j.1574-695x.2006.00177.x.Peer-Reviewed Original ResearchConceptsMurine Lyme borreliosisB. burgdorferi sensu strictoBurgdorferi sensu strictoLyme borreliosisBorrelia burgdorferi sensu strictoEffect of coinfectionCoinfected miceBorrelia speciesSimultaneous infectionMiceCoinfectionBorreliosisB. gariniiBorrelia gariniiReservoir hostsGariniiI. ricinus populationsSpirochetesHigher numberArthritisPreferential maintenanceInfectionPrevalenceSpirochetemia
2002
Cyclooxygenase 2 activity modulates the severity of murine Lyme arthritis
Anguita J, Samanta S, Ananthanarayanan SK, Revilla B, Geba GP, Barthold SW, Fikrig E. Cyclooxygenase 2 activity modulates the severity of murine Lyme arthritis. Pathogens And Disease 2002, 34: 187-191. PMID: 12423770, PMCID: PMC4307933, DOI: 10.1111/j.1574-695x.2002.tb00623.x.Peer-Reviewed Original ResearchConceptsJoint inflammationCOX-2B. burgdorferi-specific antibodyBurgdorferi-specific antibodiesOnset of arthritisDegree of inflammationNoninfectious inflammatory diseasesCyclooxygenase-2 activityCOX-2 activityB. burgdorferiCOX-2 gene expressionMurine Lyme arthritisSpecific inhibitionLyme arthritisCytokine responsesInfectious arthritisRheumatoid arthritisInfected miceInflammatory diseasesInducible isoformMurine jointsArthritisInflammationMRNA expressionLyme disease
2001
Coinfection with Borrelia burgdorferi and the Agent of Human Granulocytic Ehrlichiosis Alters Murine Immune Responses, Pathogen Burden, and Severity of Lyme Arthritis
Thomas V, Anguita J, Barthold S, Fikrig E. Coinfection with Borrelia burgdorferi and the Agent of Human Granulocytic Ehrlichiosis Alters Murine Immune Responses, Pathogen Burden, and Severity of Lyme Arthritis. Infection And Immunity 2001, 69: 3359-3371. PMID: 11292759, PMCID: PMC98295, DOI: 10.1128/iai.69.5.3359-3371.2001.Peer-Reviewed Original ResearchConceptsHuman granulocytic ehrlichiosisLyme arthritisDual infectionBacterial burdenImmune responseTumor necrosis factor-alpha levelsB. burgdorferiElevated IL-6 levelsNecrosis factor-alpha levelsGranulocytic ehrlichiosisIL-6 levelsAgent of HGEMurine immune responseBorrelia burgdorferiTick-borne illnessMurine Lyme arthritisSevere Lyme arthritisCoinfection of miceIFN-gamma receptor expressionInfected miceInterleukin-12Receptor expressionGamma interferonArthritisPathogen burden
2000
Borrelia burgdorferi Gene Expression In Vivo and Spirochete Pathogenicity
Anguita J, Samanta S, Revilla B, Suk K, Das S, Barthold S, Fikrig E. Borrelia burgdorferi Gene Expression In Vivo and Spirochete Pathogenicity. Infection And Immunity 2000, 68: 1222-1230. PMID: 10678930, PMCID: PMC97271, DOI: 10.1128/iai.68.3.1222-1230.2000.Peer-Reviewed Original ResearchConceptsC3H/HeN miceBorrelia burgdorferi spirochetesLyme disease pathogenesisNonpathogenic spirochetesSpirochete disseminationHumoral responseImmunocompetent miceHeN miceSCID miceC3H miceImmunodeficient miceImmune serumDisease pathogenesisCarditisArthritisMiceGene expressionGenomic expression libraryDiseaseB. burgdorferiB. burgdorferi N40Borrelia burgdorferi gene expressionMammalian infectionSubsequent developmentInfection
1999
The Immunoglobulin (IgG) Antibody Response to OspA and OspB Correlates with Severe and Prolonged Lyme Arthritis and the IgG Response to P35 Correlates with Mild and Brief Arthritis
Akin E, McHugh G, Flavell R, Fikrig E, Steere A. The Immunoglobulin (IgG) Antibody Response to OspA and OspB Correlates with Severe and Prolonged Lyme Arthritis and the IgG Response to P35 Correlates with Mild and Brief Arthritis. Infection And Immunity 1999, 67: 173-181. PMID: 9864212, PMCID: PMC96293, DOI: 10.1128/iai.67.1.173-181.1999.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAntigens, BacterialAntigens, SurfaceArthritis, InfectiousBacterial Outer Membrane ProteinsBacterial ProteinsBacterial VaccinesBorrelia burgdorferi GroupChildChild, PreschoolFemaleHumansImmunoglobulin GLipoproteinsLongitudinal StudiesLyme DiseaseMaleMiddle AgedSeverity of Illness IndexConceptsAntibody responseIgG antibodiesEarly arthritisLyme arthritisIgG responsesEarly infectionDuration of arthritisChronic Lyme arthritisIgG antibody responseSerial serum samplesBorrelia burgdorferi proteinsSubsequent arthritisB. burgdorferi proteinsSurface protein CC-terminal epitopeImmune responseArthritisSubsequent severityNatural historyLyme diseasePatientsSerum samplesImmunoglobulin GProtein CInfection
1998
Differential Expression of Borrelia burgdorferi Genes during Erythema Migrans and Lyme Arthritis
Fikrig E, Feng W, Aversa J, Schoen R, Flavell R. Differential Expression of Borrelia burgdorferi Genes during Erythema Migrans and Lyme Arthritis. The Journal Of Infectious Diseases 1998, 178: 1198-1201. PMID: 9806060, DOI: 10.1086/515684.Peer-Reviewed Original ResearchConceptsLyme arthritisLyme diseaseHuman infectionsPhase III clinical trialsMurine Lyme borreliosisRNA polymerase chain reactionErythema migrans biopsiesErythema migransProtective immunityClinical trialsVaccine candidatesTissue specimensLyme borreliosisPatientsGene expressionBorrelia burgdorferiDiseaseFirst direct demonstrationB. burgdorferiChain reactionArthritisInfectionBorrelia burgdorferi genesOspAB. burgdorferi gene expression
1997
Protective antibodies develop, and murine Lyme arthritis regresses, in the absence of MHC class II and CD4+ T cells.
Fikrig E, Barthold SW, Chen M, Chang CH, Flavell RA. Protective antibodies develop, and murine Lyme arthritis regresses, in the absence of MHC class II and CD4+ T cells. The Journal Of Immunology 1997, 159: 5682-6. PMID: 9548512, DOI: 10.4049/jimmunol.159.11.5682.Peer-Reviewed Original ResearchConceptsMHC class IIT cellsClass IINaive C3H/HeN miceC3H/HeN miceC57/BL6 miceCIITA-deficient miceRegression of arthritisResolution of arthritisResolution of carditisDevelopment of arthritisMurine Lyme borreliosisMHC class II transactivatorClass II moleculesClass II transactivatorIgG2b AbsProtective antibodiesBL6 miceHeN miceDeficient miceProtective AbsSCID micePersistent infectionArthritisCD4 repertoireAblation of interleukin-12 exacerbates Lyme arthritis in SCID mice
Anguita J, Samanta S, Barthold SW, Fikrig E. Ablation of interleukin-12 exacerbates Lyme arthritis in SCID mice. Infection And Immunity 1997, 65: 4334-4336. PMID: 9317045, PMCID: PMC175621, DOI: 10.1128/iai.65.10.4334-4336.1997.Peer-Reviewed Original ResearchLyme Borreliosis in Transgenic Mice Tolerant to OspA from Borrelia burgdorferi 25015
Fikrig E, Barthold S, Chen M, Tao H, Ali-Salaam P, Bockenstedt L, Flavell R. Lyme Borreliosis in Transgenic Mice Tolerant to OspA from Borrelia burgdorferi 25015. The Journal Of Infectious Diseases 1997, 175: 1000-1003. PMID: 9086169, DOI: 10.1086/513958.Peer-Reviewed Original ResearchConceptsTransgenic miceLyme borreliosisC3H/HeN miceTolerance of miceSurface protein ABorrelia burgdorferi outer surface protein ASignificant arthritisOuter surface protein ALyme arthritisProtective immunityNontransgenic littermatesHeN miceOspA antibodiesDisease pathogenesisMiceArthritisB. burgdorferi N40OspABorreliosisCellular responsesProtein AResponseImmunizationPathogenesisLittermatesLyme disease in transgenic mice expressing the Borrelia burgdorferi flagellin epitope implicated in human neuroborreliosis
Fikrig E, Barthold S. Lyme disease in transgenic mice expressing the Borrelia burgdorferi flagellin epitope implicated in human neuroborreliosis. FEMS Microbiology Letters 1997, 148: 137-143. PMID: 9084140, DOI: 10.1111/j.1574-6968.1997.tb10279.x.Peer-Reviewed Original ResearchConceptsTransgenic miceAntibody responseNervous systemNon-transgenic miceFlagellin epitopeTypes of miceB. burgdorferi infectionCentral nervous systemMyelin basic proteinBurgdorferi infectionNeurologic diseaseMyelinated regionsNeuroborreliosisLyme diseaseMiceNeural tissueBorrelia burgdorferiEpitopesFlagellin antibodyInfectionDiseaseBasic proteinCarditisArthritisFusion protein
1996
Protective antibodies in murine Lyme disease arise independently of CD40 ligand.
Fikrig E, Barthold SW, Chen M, Grewal IS, Craft J, Flavell RA. Protective antibodies in murine Lyme disease arise independently of CD40 ligand. The Journal Of Immunology 1996, 157: 1-3. PMID: 8683101, DOI: 10.4049/jimmunol.157.1.1.Peer-Reviewed Original ResearchConceptsCD40L-deficient miceCD40 ligand-deficient miceMurine Lyme diseaseRegression of arthritisTransfer of serumDependent immune responsesIgG2b AbsAcute arthritisControl miceProtective antibodiesIg class switchingCD40 ligandImmune responseImmunodeficient miceLyme borreliosisLyme diseaseMiceBorrelia burgdorferiB. burgdorferiClass switchingArthritisBurgdorferiAbInfectionDisease
1995
A 55-kilodalton antigen encoded by a gene on a Borrelia burgdorferi 49-kilobase plasmid is recognized by antibodies in sera from patients with Lyme disease
Feng S, Das S, Lam T, Flavell RA, Fikrig E. A 55-kilodalton antigen encoded by a gene on a Borrelia burgdorferi 49-kilobase plasmid is recognized by antibodies in sera from patients with Lyme disease. Infection And Immunity 1995, 63: 3459-3466. PMID: 7642278, PMCID: PMC173477, DOI: 10.1128/iai.63.9.3459-3466.1995.Peer-Reviewed Original ResearchConceptsLate-stage Lyme diseaseEarly stage Lyme diseaseLyme diseaseIgM antibodiesSubset of patientsBorrelia burgdorferiLyme disease patientsEnzyme-linked immunosorbent assayRecombinant S1Disease patientsIgG antibodiesPulsed-field gel electrophoresisS1 antigenPatientsAntigenDiseaseSerum samplesImmunosorbent assaySerumAntibodiesB. burgdorferiRabbit antiBurgdorferiCultured spirochetesArthritisLyme Disease in Human DR4Dw4-Transgenic Mice
Feng S, Barthold S, Bockenstedt L, Zaller D, Fikrig E. Lyme Disease in Human DR4Dw4-Transgenic Mice. The Journal Of Infectious Diseases 1995, 172: 286-289. PMID: 7797933, DOI: 10.1093/infdis/172.1.286.Peer-Reviewed Original ResearchConceptsDR4 transgenic miceChronic Lyme arthritisLyme arthritisGroups of miceHigh antibody titersHLA-DR4 allelesB. burgdorferiControl miceMajor histocompatibility complex class II genesAntibody titersArthritisOuter surface proteinsClass II genesLyme diseaseMiceDay 120Beta 1 domainsAlpha 1Equal severityBorrelia burgdorferiMouse IBurgdorferiHuman alpha 1DiseaseSurface proteins
1994
Target Imbalance: Disparity of Borrelia burgdorferi Genetic Material in Synovial Fluid from Lyme Arthritis Patients
Persing D, Rutledge B, Rys P, Podzorski D, Mitchell P, Ree K, Liu B, Fikrig E, Malawista S. Target Imbalance: Disparity of Borrelia burgdorferi Genetic Material in Synovial Fluid from Lyme Arthritis Patients. The Journal Of Infectious Diseases 1994, 169: 668-672. PMID: 8158048, DOI: 10.1093/infdis/169.3.668.Peer-Reviewed Original ResearchConceptsLyme arthritisClinical specimensLyme arthritis patientsUnderlying pathogenetic mechanismsPolymerase chain reaction studiesSynovial fluid specimensB. burgdorferi infectionArthritis patientsSynovial inflammationPathogenetic mechanismsBurgdorferi infectionPhysiologic imbalanceSynovial fluidFluid specimensEtiologic agentLate manifestationLyme diseaseCultured organismsBorrelia burgdorferiArthritisPatientsDNA reactivityAnalytic sensitivityA Recombinant OspA and OspB Based Lyme Disease Vaccine
Fikrig E, Kantor F, Barthold S, Flavell R. A Recombinant OspA and OspB Based Lyme Disease Vaccine. NATO Science Series A: 1994, 25-31. DOI: 10.1007/978-1-4615-2415-1_5.Peer-Reviewed Original Research