2023
Adaptation of Nontypeable Haemophilus influenzae in Human Airways in COPD: Genome Rearrangements and Modulation of Expression of HMW1 and HMW2
Murphy T, Kirkham C, D’Mello A, Sethi S, Pettigrew M, Tettelin H. Adaptation of Nontypeable Haemophilus influenzae in Human Airways in COPD: Genome Rearrangements and Modulation of Expression of HMW1 and HMW2. MBio 2023, 14: e00140-23. PMID: 36927061, PMCID: PMC10127715, DOI: 10.1128/mbio.00140-23.Peer-Reviewed Original ResearchMeSH KeywordsAdhesins, BacterialAdultHaemophilus InfectionsHaemophilus influenzaeHumansInflammationPulmonary Disease, Chronic ObstructiveRespiratory SystemConceptsChronic obstructive pulmonary diseaseNontypeable Haemophilus influenzaeObstructive pulmonary diseaseRespiratory epithelial cellsHuman airwaysHaemophilus influenzaeAirway inflammationLung functionMechanisms of persistencePulmonary diseaseEpithelial cellsNovel interventionsChronic lower airway infectionsProgressive lossAirways of adultsLower airway infectionHuman respiratory epithelial cellsCommon debilitating disorderStrains of NTHiNTHi infectionAirway infectionLower airwaysCommon causeSequential isolatesSerial isolates
2018
Persistence of Moraxella catarrhalis in Chronic Obstructive Pulmonary Disease and Regulation of the Hag/MID Adhesin
Murphy TF, Brauer AL, Pettigrew MM, LaFontaine ER, Tettelin H. Persistence of Moraxella catarrhalis in Chronic Obstructive Pulmonary Disease and Regulation of the Hag/MID Adhesin. The Journal Of Infectious Diseases 2018, 219: 1448-1455. PMID: 30496439, PMCID: PMC6467191, DOI: 10.1093/infdis/jiy680.Peer-Reviewed Original ResearchConceptsChronic obstructive pulmonary diseaseObstructive pulmonary diseaseM. catarrhalisPulmonary diseaseMoraxella catarrhalisPersistent strainsDuration of persistenceHuman airwaysCatarrhalisCessation of expressionAirwayMajor pathogenPatientsBacterial pathogensDiseaseVirulence-associated phenotypesAdultsCollected strainsMost strainsExpressionHuman cellsPathogensPathogenesisPersistenceMonthsHaemophilus influenzae genome evolution during persistence in the human airways in chronic obstructive pulmonary disease
Pettigrew MM, Ahearn CP, Gent JF, Kong Y, Gallo MC, Munro JB, D’Mello A, Sethi S, Tettelin H, Murphy TF. Haemophilus influenzae genome evolution during persistence in the human airways in chronic obstructive pulmonary disease. Proceedings Of The National Academy Of Sciences Of The United States Of America 2018, 115: e3256-e3265. PMID: 29555745, PMCID: PMC5889651, DOI: 10.1073/pnas.1719654115.Peer-Reviewed Original ResearchConceptsChronic obstructive pulmonary diseaseObstructive pulmonary diseaseCandidate vaccine antigensHuman airwaysPulmonary diseaseVaccine antigensRespiratory tract pathogensHuman respiratory tractProspective studyTract pathogensNTHi isolatesRespiratory tractAnimal modelsVaccine developmentHuman infectionsAirwayNTHiSurface moleculesAmino acid sequence changesWhole-genome sequencingAntigenBacterial pathogensDiseaseSubset of strainsVirulence functionsAzithromycin Pharmacodynamics against Persistent Haemophilus influenzae in Chronic Obstructive Pulmonary Disease
Tsuji BT, Fisher J, Boadi-Yeboah R, Holden PN, Sethi S, Pettigrew MM, Murphy TF. Azithromycin Pharmacodynamics against Persistent Haemophilus influenzae in Chronic Obstructive Pulmonary Disease. Antimicrobial Agents And Chemotherapy 2018, 62: 10.1128/aac.01995-17. PMID: 29180527, PMCID: PMC5786777, DOI: 10.1128/aac.01995-17.Peer-Reviewed Original ResearchMeSH KeywordsAnti-Bacterial AgentsAzithromycinHaemophilus InfectionsHaemophilus influenzaeHumansPulmonary Disease, Chronic ObstructiveRespiratory SystemConceptsChronic obstructive pulmonary disease patientsObstructive pulmonary disease patientsChronic obstructive pulmonary diseaseHollow-fiber infection modelStrains of NTHiPulmonary disease patientsObstructive pulmonary diseasePulmonary diseaseConcentration-dependent activityDisease patientsPharmacodynamic profilePharmacodynamic responseSame patientHaemophilus influenzaeInfection modelPatientsAzithromycinPersistent strainsDaysAirwayNTHiPharmacodynamicsInfluenzaeDiseaseHaemophilus
2012
Upper Respiratory Tract Microbial Communities, Acute Otitis Media Pathogens, and Antibiotic Use in Healthy and Sick Children
Pettigrew MM, Laufer AS, Gent JF, Kong Y, Fennie KP, Metlay JP. Upper Respiratory Tract Microbial Communities, Acute Otitis Media Pathogens, and Antibiotic Use in Healthy and Sick Children. Applied And Environmental Microbiology 2012, 78: 6262-6270. PMID: 22752171, PMCID: PMC3416608, DOI: 10.1128/aem.01051-12.Peer-Reviewed Original ResearchConceptsAcute otitis mediaAntibiotic useS. pneumoniaeHealthy childrenM. catarrhalisH. influenzaeAcute otitis media pathogensConcurrent acute otitis mediaUpper respiratory tract infectionRespiratory tract infectionsOtitis media pathogensUpper respiratory tractCross-sectional studyYears of ageAOM pathogensTract infectionsOtitis mediaMoraxella catarrhalisRespiratory tractReal-time PCRNasal swabsSick childrenPrevention strategiesHaemophilus influenzaeStreptococcus pneumoniae