2023
Transcriptomic identification of genes expressed in invasive S. aureus diabetic foot ulcer infection
Agidigbi T, Kwon H, Knight J, Zhao D, Lee F, Oh I. Transcriptomic identification of genes expressed in invasive S. aureus diabetic foot ulcer infection. Frontiers In Cellular And Infection Microbiology 2023, 13: 1198115. PMID: 37434783, PMCID: PMC10332306, DOI: 10.3389/fcimb.2023.1198115.Peer-Reviewed Original ResearchConceptsDiabetic foot ulcersPeripheral blood mononuclear cellsHost immune responseActive infectionImmune responseDiabetic foot ulcer infectionsInfected diabetic foot ulcersFoot ulcer infectionsPatients 8 weeksIntravenous antibiotic therapyBlood mononuclear cellsWound healing statusDFU infectionsPBMC expressionSalvage therapyUlcer infectionDifferent time pointsAntibiotic therapyMajor complicationsSurgical treatmentFoot ulcersMononuclear cellsPotential intervention optionsSpecies-specific infectionTreatment response
2021
Comparative study of culture, next‐generation sequencing, and immunoassay for identification of pathogen in diabetic foot ulcer
Lipof JS, Jones CMC, Daiss J, Oh I. Comparative study of culture, next‐generation sequencing, and immunoassay for identification of pathogen in diabetic foot ulcer. Journal Of Orthopaedic Research® 2021, 39: 2638-2645. PMID: 33543785, PMCID: PMC8339135, DOI: 10.1002/jor.25001.Peer-Reviewed Original ResearchMeSH KeywordsDiabetes MellitusDiabetic FootHigh-Throughput Nucleotide SequencingHumansImmunoassayStaphylococcal InfectionsStaphylococcus aureusConceptsDiabetic foot infectionsMusculoskeletal infectionsNext-generation sequencingS. agalactiaeS. aureusCulture-directed antibioticsDeep musculoskeletal infectionNegative initial culturesProspective observational studyTime of diagnosisDiabetic foot ulcersLimb salvage effortsPeripheral blood samplesYears of ageFoot infectionsSurgical debridementFoot ulcersRecurrent infectionsTreatment successFair correlationIntraoperative samplesObservational studyBlood samplesUseful adjunctOrthopaedic surgeons
2020
Distinct vasculotropic versus osteotropic features of S. agalactiae versus S. aureus implant‐associated bone infection in mice
Masters EA, Hao SP, Kenney HM, Morita Y, Galloway CA, de Mesy Bentley K, Ricciardi BF, Boyce BF, Schwarz EM, Oh I. Distinct vasculotropic versus osteotropic features of S. agalactiae versus S. aureus implant‐associated bone infection in mice. Journal Of Orthopaedic Research® 2020, 39: 389-401. PMID: 33336806, PMCID: PMC7882123, DOI: 10.1002/jor.24962.Peer-Reviewed Original ResearchConceptsS. aureus osteomyelitisBone infectionS. agalactiaeAnimal modelsS. aureus bone infectionImplant looseningSoft tissueImplant-associated osteomyelitisQuantitative animal modelCortical boneAdjacent soft tissuesGroup B streptococciS. aureusSeptic implant looseningS. agalactiae infectionAssessment of miceS. aureus virulenceGreater body weightDevastating complicationClinical featuresAbscess formationLocal inflammationAggressive osteolysisLess osteolysisPreclinical modelsClinical utilization of species‐specific immunoassays for identification of Staphylococcus aureus and Streptococcus agalactiae in orthopedic infections
Sulovari A, Ninomiya MJ, Beck CA, Ricciardi BF, Ketonis C, Mesfin A, Kaplan NB, Soin SP, McDowell SM, Mahmood B, Daiss JL, Schwarz EM, Oh I. Clinical utilization of species‐specific immunoassays for identification of Staphylococcus aureus and Streptococcus agalactiae in orthopedic infections. Journal Of Orthopaedic Research® 2020, 39: 2141-2150. PMID: 33274775, PMCID: PMC8175449, DOI: 10.1002/jor.24935.Peer-Reviewed Original ResearchMeSH KeywordsAntibodies, BacterialArthritis, InfectiousHumansImmunoassayLeukocytes, MononuclearStaphylococcal InfectionsStaphylococcus aureusStreptococcus agalactiaeConceptsPeripheral blood mononuclear cellsFracture-related infectionMusculoskeletal infectionsOrthopedic infectionsHigh diagnostic potentialCultured peripheral blood mononuclear cellsDiagnostic potentialDeep musculoskeletal infectionSignificant patient morbidityBlood mononuclear cellsDiabetic foot ulcersAntigen-specific IgGPeriprosthetic joint infectionStaphylococcus aureusInfection patientsSeptic arthritisSurgical treatmentCurrent diagnostic methodsFoot ulcersJoint infectionAntibody titersMononuclear cellsPatient morbidityPolymicrobial infectionsAntibiotic useSpecies-Specific Immunoassay Aids Identification of Pathogen and Tracks Infectivity in Foot Infection
Hao SP, Masters EA, Ninomiya MJ, Beck CA, Schwarz EM, Daiss JL, Oh I. Species-Specific Immunoassay Aids Identification of Pathogen and Tracks Infectivity in Foot Infection. Foot & Ankle International 2020, 42: 363-372. PMID: 33161780, PMCID: PMC7946706, DOI: 10.1177/1071100720965136.Peer-Reviewed Original ResearchMeSH KeywordsAmputation, SurgicalBacterial InfectionsDiabetic FootFootHumansImmunoassayProspective StudiesStaphylococcal InfectionsStaphylococcus aureusConceptsFoot infectionsHost immune responseWound healing statusImmune responseHealing statusFoot ulcer patientsProspective comparative studyCulture-positive patientsCulture-negative patientsSpecific serum antibodiesDominant pathogenAnalysis of serumConventional bacterial cultureUlcer patientsMusculoskeletal infectionsSurgical interventionAntibody titersSerum antibodiesTherapeutic responseInfection diagnosisSpecies-specific immunoassaySurgeon's decisionCulture resultsInfectionLevel II
2018
Tracking Anti-Staphylococcus aureus Antibodies Produced In Vivo and Ex Vivo during Foot Salvage Therapy for Diabetic Foot Infections Reveals Prognostic Insights and Evidence of Diversified Humoral Immunity
Oh I, Muthukrishnan G, Ninomiya MJ, Brodell JD, Smith BL, Lee CC, Gill SR, Beck CA, Schwarz EM, Daiss JL. Tracking Anti-Staphylococcus aureus Antibodies Produced In Vivo and Ex Vivo during Foot Salvage Therapy for Diabetic Foot Infections Reveals Prognostic Insights and Evidence of Diversified Humoral Immunity. Infection And Immunity 2018, 86: 10.1128/iai.00629-18. PMID: 30275008, PMCID: PMC6246899, DOI: 10.1128/iai.00629-18.Peer-Reviewed Original ResearchConceptsDiabetic foot infectionsIgG levelsDFI patientsSalvage therapyFoot infectionsCultured peripheral blood mononuclear cellsPeripheral blood mononuclear cellsBlood mononuclear cellsSimilar diagnostic potentialAggressive treatmentAntibody titersHumoral immunityMononuclear cellsPrognostic insightsPrognostic potentialCommon pathogensEtiologic agentMultivariate analysisClinical decisionEx vivoMultiplex immunoassayWound samplesInfectionSerumAureus antibodyChronic Osteomyelitis with Staphylococcus aureus Deformation in Submicron Canaliculi of Osteocytes
de Mesy Bentley KL, MacDonald A, Schwarz EM, Oh I. Chronic Osteomyelitis with Staphylococcus aureus Deformation in Submicron Canaliculi of Osteocytes. JBJS Case Connector 2018, 8: e8. PMID: 29443819, PMCID: PMC6681818, DOI: 10.2106/jbjs.cc.17.00154.Peer-Reviewed Original ResearchMeSH KeywordsAgedDiabetic FootFoot BonesHost-Pathogen InteractionsHumansMaleOsteocytesOsteomyelitisStaphylococcal InfectionsStaphylococcus aureus