2024
Effect of empiric antibiotics against Pseudomonas aeruginosa on mortality in hospitalized patients: a systematic review and meta-analysis
Hunter C, Marhoffer E, Holleck J, Alshaeba S, Grimshaw A, Chou A, Carey G, Gunderson C. Effect of empiric antibiotics against Pseudomonas aeruginosa on mortality in hospitalized patients: a systematic review and meta-analysis. Journal Of Antimicrobial Chemotherapy 2024, 80: 322-333. PMID: 39656468, DOI: 10.1093/jac/dkae422.Peer-Reviewed Original ResearchPrevalence of P. aeruginosaEffects of empiric antibioticsEmpirical antibioticsUrinary tract infectionSoft tissue infectionsCommunity-acquired pneumoniaTract infectionsTissue infectionsP. aeruginosaMortality benefitHospitalized patientsPseudomonas aeruginosaPooled adjusted ORP. aeruginosa infectionType of infectionStudy of patientsAbsolute mortality benefitIntensive care settingSystematic literature searchNosocomial pneumoniaSeptic shockMeaningful benefitAdjusted ORWeb of ScienceCompare mortality ratesPilY1 regulates the dynamic architecture of the type IV pilus machine in Pseudomonas aeruginosa
Guo S, Chang Y, Brun Y, Howell P, Burrows L, Liu J. PilY1 regulates the dynamic architecture of the type IV pilus machine in Pseudomonas aeruginosa. Nature Communications 2024, 15: 9382. PMID: 39477930, PMCID: PMC11525922, DOI: 10.1038/s41467-024-53638-y.Peer-Reviewed Original ResearchConceptsPilus extensionCell envelopeType IV piliPathogen Pseudomonas aeruginosaBacterial cell envelopeP. aeruginosa cellsCryo-electron tomographyPilus dynamicsPilin subunitSecretin channelSurface motilityPriming complexOuter membraneBiofilm formationT4PPilY1P. aeruginosaPseudomonas aeruginosaCentral poreMolecular mechanismsSubtomogram averagingPotential therapeutic targetDynamic assemblyTherapeutic targetMolecular framework
2021
A Primed Subpopulation of Bacteria Enables Rapid Expression of the Type 3 Secretion System in Pseudomonas aeruginosa
Lin CK, Lee DSW, McKeithen-Mead S, Emonet T, Kazmierczak B. A Primed Subpopulation of Bacteria Enables Rapid Expression of the Type 3 Secretion System in Pseudomonas aeruginosa. MBio 2021, 12: 10.1128/mbio.00831-21. PMID: 34154400, PMCID: PMC8262847, DOI: 10.1128/mbio.00831-21.Peer-Reviewed Original ResearchConceptsType 3 secretion systemSecretion systemT3SS expressionVirulence traitsSpecific virulence traitsHuman disease severityComplex nanomachinesT3SS genesP. aeruginosa cellsReproductive fitnessIsogenic cellsHeterogeneous expressionCell envelopeT3SS effectorsMotility organellesReservoir of cellsCritical virulence traitsGene expressionRegulatory mechanismsSubpopulation of cellsGram-negative pathogensFluorescent reportersDivision timeP. aeruginosaPseudomonas aeruginosaCO 2 -Driven diffusiophoresis for maintaining a bacteria-free surface
Shim S, Khodaparast S, Lai CY, Yan J, Ault JT, Rallabandi B, Shardt O, Stone HA. CO 2 -Driven diffusiophoresis for maintaining a bacteria-free surface. Soft Matter 2021, 17: 2568-2576. PMID: 33514979, DOI: 10.1039/d0sm02023k.Peer-Reviewed Original ResearchConceptsWild-type V. choleraeCell shapeBacterial cellsDirectional migrationV. choleraeCO2 gradientNonzero surface chargeP. aeruginosaCellsCO2 sourcesFlagellaCO2 concentration gradientBacteriaCholeraeDirectional responseBacteria-free surfaceGram stainMotilityAnti-biofouling surfacesConcentration gradientGradientAeruginosa
2019
Modulation of flagellar rotation in surface-attached bacteria: A pathway for rapid surface-sensing after flagellar attachment
Schniederberend M, Williams JF, Shine E, Shen C, Jain R, Emonet T, Kazmierczak BI. Modulation of flagellar rotation in surface-attached bacteria: A pathway for rapid surface-sensing after flagellar attachment. PLOS Pathogens 2019, 15: e1008149. PMID: 31682637, PMCID: PMC6855561, DOI: 10.1371/journal.ppat.1008149.Peer-Reviewed Original ResearchConceptsFlagellar rotationSurface-attached bacteriaGram-negative opportunistic pathogen Pseudomonas aeruginosaOpportunistic pathogen Pseudomonas aeruginosaSwitch complex proteinsSingle polar flagellumBiofilm formationSurface-associated behaviorsSurface-associated structuresType IV piliPathogen Pseudomonas aeruginosaGenetic screenPolar flagellumTranscriptional programsBiofilm initiationComplex proteinsMutant bacteriaFlagellar attachmentSecond messengerP. aeruginosaFlhFBacteriaFlagellaPathwayAltered behavior
2018
Host suppression of quorum sensing during catheter-associated urinary tract infections
Cole SJ, Hall CL, Schniederberend M, Farrow III JM, Goodson JR, Pesci EC, Kazmierczak BI, Lee VT. Host suppression of quorum sensing during catheter-associated urinary tract infections. Nature Communications 2018, 9: 4436. PMID: 30361690, PMCID: PMC6202348, DOI: 10.1038/s41467-018-06882-y.Peer-Reviewed Original ResearchConceptsCatheter-associated urinary tract infectionsUrinary tract infectionTract infectionsChronic bacterial infectionP. aeruginosaAntibiotic therapyUrinary tractDevice-associated biofilmsMurine modelHost immunityClinical isolatesBacterial infectionsInfectionPseudomonas aeruginosaUrineAeruginosaTherapyRegulated genesImmunityTract
2017
Inflammation: A Double-Edged Sword in the Response to Pseudomonas aeruginosa Infection
Lin CK, Kazmierczak BI. Inflammation: A Double-Edged Sword in the Response to Pseudomonas aeruginosa Infection. Journal Of Innate Immunity 2017, 9: 250-261. PMID: 28222444, PMCID: PMC5469373, DOI: 10.1159/000455857.Peer-Reviewed Original ResearchConceptsP. aeruginosa pulmonary infectionInnate immune recognitionPseudomonas aeruginosa infectionInflamed airwaysPulmonary infectionAcute infectionAdjunct therapyChronic infectionBarrier defenseAeruginosa infectionAnatomic sitesPathogen clearanceBacterial productsImmune recognitionInnate immunityInfectionHost outcomesResistant pathogensP. aeruginosa adaptationInflammationP. aeruginosaPathogen persistenceDouble-edged swordPseudomonas aeruginosaDefense mechanisms
2016
Chitinase 3-Like 1 (Chil1) Regulates Survival and Macrophage-Mediated Interleukin-1β and Tumor Necrosis Factor Alpha during Pseudomonas aeruginosa Pneumonia
Marion CR, Wang J, Sharma L, Losier A, Lui W, Andrews N, Elias JA, Kazmierczak BI, Roy CR, Dela Cruz CS. Chitinase 3-Like 1 (Chil1) Regulates Survival and Macrophage-Mediated Interleukin-1β and Tumor Necrosis Factor Alpha during Pseudomonas aeruginosa Pneumonia. Infection And Immunity 2016, 84: 2094-2104. PMID: 27141083, PMCID: PMC4936356, DOI: 10.1128/iai.00055-16.Peer-Reviewed Original ResearchConceptsBone marrow-derived macrophagesTumor necrosis factor alphaExcessive IL-1β productionNecrosis factor alphaIL-1β productionWT miceAeruginosa pneumoniaFactor alphaChitinase 3Lung parenchymal damageHospital-acquired pneumoniaIL-13 receptor α2Pseudomonas aeruginosa pneumoniaP. aeruginosa pneumoniaDecreased survival timeStreptococcus pneumoniae infectionHost inflammatory responseP. aeruginosa infectionInterleukin-1β productionMarrow-derived macrophagesHost tissue damageP. aeruginosaHost tolerancePneumoniae infectionParenchymal damagePhage selection restores antibiotic sensitivity in MDR Pseudomonas aeruginosa
Chan BK, Sistrom M, Wertz JE, Kortright KE, Narayan D, Turner PE. Phage selection restores antibiotic sensitivity in MDR Pseudomonas aeruginosa. Scientific Reports 2016, 6: 26717. PMID: 27225966, PMCID: PMC4880932, DOI: 10.1038/srep26717.Peer-Reviewed Original ResearchConceptsMDR P. aeruginosaMDR Pseudomonas aeruginosaEfflux pump mechanismAntibiotic-resistant infectionsResistant bacterial infectionsPseudomonas aeruginosaReceptor-binding siteMDR bacteriaTherapeutic interventionsResistant infectionsBacterial infectionsReduced pathogenesisAntibiotic sensitivityAntibiotic classesPhage therapyCurrent antibioticsNovel antibacterial strategiesTherapyP. aeruginosaInfectionBacterial pathogensBacterial resistanceLytic bacteriophagesAntibioticsTraditional antibioticsThe fermentation product 2,3-butanediol alters P. aeruginosa clearance, cytokine response and the lung microbiome
Nguyen M, Sharma A, Wu W, Gomi R, Sung B, Hospodsky D, Angenent LT, Worgall S. The fermentation product 2,3-butanediol alters P. aeruginosa clearance, cytokine response and the lung microbiome. The ISME Journal: Multidisciplinary Journal Of Microbial Ecology 2016, 10: 2978-2983. PMID: 27177192, PMCID: PMC5148197, DOI: 10.1038/ismej.2016.76.Peer-Reviewed Original ResearchConceptsEnvironmental microbesFermentation productsP. aeruginosa persistenceP. aeruginosa virulenceRespiratory tractLung microbiotaBacterial fermentation productsLung microbiomeP. aeruginosa respiratory tract infectionsP. aeruginosaP. aeruginosa clearanceRespiratory tract infectionsBiofilm formationMurine respiratory tractIL-6 responseDisease susceptibilityVirulenceMicrobiomeMicrobesColonizationTract infectionsAirway microbiomeCytokine responsesInflammatory responseMicrobiota diversityPseudomonas aeruginosa Colonization in the Intensive Care Unit: Prevalence, Risk Factors, and Clinical Outcomes
Harris AD, Jackson SS, Robinson G, Pineles L, Leekha S, Thom KA, Wang Y, Doll M, Pettigrew MM, Johnson JK. Pseudomonas aeruginosa Colonization in the Intensive Care Unit: Prevalence, Risk Factors, and Clinical Outcomes. Infection Control And Hospital Epidemiology 2016, 37: 544-548. PMID: 26832307, PMCID: PMC4833506, DOI: 10.1017/ice.2015.346.Peer-Reviewed Original ResearchConceptsIntensive care unitPseudomonas aeruginosa colonizationRisk factorsICU admissionClinical culturesCurrent hospitalizationAeruginosa colonizationCare unitIntensive care unit admissionP. aeruginosaSurgical intensive care unitPositive clinical cultureCare unit admissionEmpirical antibiotic therapyTertiary care hospitalType of ICUSignificant risk factorsP. aeruginosa colonizationRapid diagnostic testingPerirectal surveillance culturesUnit admissionCohort studyAntibiotic therapyCare hospitalClinical outcomes
2013
Flagellar Motility Is a Key Determinant of the Magnitude of the Inflammasome Response to Pseudomonas aeruginosa
Patankar YR, Lovewell RR, Poynter ME, Jyot J, Kazmierczak BI, Berwin B. Flagellar Motility Is a Key Determinant of the Magnitude of the Inflammasome Response to Pseudomonas aeruginosa. Infection And Immunity 2013, 81: 2043-2052. PMID: 23529619, PMCID: PMC3676033, DOI: 10.1128/iai.00054-13.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsApoptosis Regulatory ProteinsCARD Signaling Adaptor ProteinsCaspase 1Cell DeathCytoskeletal ProteinsDendritic CellsFlagellaGene Expression RegulationInflammasomesInterleukin-1betaMacrophages, PeritonealMiceMice, Inbred C57BLMice, KnockoutMovementPhagocytosisPseudomonas aeruginosaPseudomonas InfectionsConceptsBacterial motilityFlagellar motilityBacterial flagellar motilityInnate immune systemWild-type P. aeruginosaInflammasome activationP. aeruginosaFlagellar expressionIngest bacteriaBone marrow-derived dendritic cellsImmune systemNLRC4 inflammasome activationBacterial associationsCaspase-1 activationBacterial interactionsMarrow-derived dendritic cellsChronic Pseudomonas aeruginosa infectionIL-1β levelsCell surfacePseudomonas aeruginosa infectionIL-1β productionInflammasome responseMotilityDendritic cellsAeruginosa infection
2012
The GTPase Activity of FlhF Is Dispensable for Flagellar Localization, but Not Motility, in Pseudomonas aeruginosa
Schniederberend M, Abdurachim K, Murray TS, Kazmierczak BI. The GTPase Activity of FlhF Is Dispensable for Flagellar Localization, but Not Motility, in Pseudomonas aeruginosa. Journal Of Bacteriology 2012, 195: 1051-1060. PMID: 23264582, PMCID: PMC3571332, DOI: 10.1128/jb.02013-12.Peer-Reviewed Original ResearchConceptsFlagellar functionGTPase activityOpportunistic human pathogen Pseudomonas aeruginosaHuman pathogen Pseudomonas aeruginosaSignal recognition particlePathogen Pseudomonas aeruginosaSingle-cell assaysFlhF proteinFlagellar localizationFlagellar assemblyRecognition particleAbiotic environmentProtein dimerizationFlagellar rotationNucleotide bindingFlhFPoint mutantsSurface organellesSwimming motilityBacterial motilityP. aeruginosaBacillus subtilisPseudomonas aeruginosaEnzymatic activityHydrolytic activityChronic versus Acute Pseudomonas aeruginosa Infection States
Kazmierczak B, Murray T. Chronic versus Acute Pseudomonas aeruginosa Infection States. 2012, 21-39. DOI: 10.1128/9781555818524.ch2.Peer-Reviewed Original ResearchVirulence factorsChronic Pseudomonas aeruginosa infectionFactor expressionPseudomonas aeruginosa infectionVirulence factor expressionP. aeruginosaAcute infectionChronic infectionAeruginosa infectionAnimal modelsMost bacterial pathogensAMP expressionInfectionInfection stateMucoid strainsBacterial pathogensHost-pathogen interactionsHost cellsExpressionEctopic expressionAeruginosaFactorsThe Ability of Virulence Factor Expression by Pseudomonas aeruginosa to Predict Clinical Disease in Hospitalized Patients
Ledizet M, Murray TS, Puttagunta S, Slade MD, Quagliarello VJ, Kazmierczak BI. The Ability of Virulence Factor Expression by Pseudomonas aeruginosa to Predict Clinical Disease in Hospitalized Patients. PLOS ONE 2012, 7: e49578. PMID: 23152923, PMCID: PMC3495863, DOI: 10.1371/journal.pone.0049578.Peer-Reviewed Original ResearchConceptsP. aeruginosa infectionAeruginosa infectionBacterial factorsHospitalized patientsUrinary tractPositive P. aeruginosa culturesP. aeruginosaUrinary tract cathetersP. aeruginosa isolatesLogistic regression modelsPseudomonas aeruginosaProspective cohortDiabetes mellitusSubgroup analysisClinical dataTreatment decisionsClinical diseaseAeruginosa isolatesAnimal modelsPatientsClinical sitesFactor expressionInfectionHost factorsP. aeruginosa culturesPseudomonas aeruginosa serology and risk for re-isolation in the EPIC trial
Anstead M, Heltshe SL, Khan U, Barbieri JT, Langkamp M, Döring G, Dharia S, Gibson RL, Treggiari MM, Lymp J, Rosenfeld M, Ramsey B. Pseudomonas aeruginosa serology and risk for re-isolation in the EPIC trial. Journal Of Cystic Fibrosis 2012, 12: 147-153. PMID: 22944725, PMCID: PMC3696392, DOI: 10.1016/j.jcf.2012.08.001.Peer-Reviewed Original ResearchConceptsPulmonary exacerbationsCF patientsP. aeruginosa eradicationP. aeruginosa isolationCystic fibrosis patientsEarly P. aeruginosaBaseline seropositivityEPIC trialPositive serologyAntibiotic therapyChild TrialTreatment failurePrognostic valuePseudomonas infectionWeek 10Fibrosis patientsSerologyCulture resultsPatientsClinicians' effortsExacerbationSeropositivityP. aeruginosaRiskTrialsAntimicrobial susceptibility patterns of multidrug-resistant Pseudomonas aeruginosa and Acinetobacter baumannii against carbapenems, colistin, and tigecycline.
Somily AM, Absar MM, Arshad MZ, Al Aska AI, Shakoor ZA, Fatani AJ, Siddiqui YM, Murray TS. Antimicrobial susceptibility patterns of multidrug-resistant Pseudomonas aeruginosa and Acinetobacter baumannii against carbapenems, colistin, and tigecycline. Saudi Medical Journal 2012, 33: 750-5. PMID: 22821309.Peer-Reviewed Original ResearchConceptsA. baumannii strainsA. baumanniiTherapeutic optionsBaumannii strainsMinimum inhibitory concentrationAcinetobacter baumanniiP. aeruginosaMultidrug-resistant Pseudomonas aeruginosaBest therapeutic optionAlternative therapeutic optionMDR A. baumanniiAntimicrobial susceptibility patternsNon-fermenting Gram-negative bacteriaNon-duplicate samplesAntimicrobial agentsPseudomonas aeruginosaSusceptibility patternsE-testBaumanniiColistinTigecyclineAlternative antimicrobial agentsDoripenemCarbapenemsInhibitory concentrationType IV Pilus Assembly in Pseudomonas aeruginosa over a Broad Range of Cyclic di-GMP Concentrations
Jain R, Behrens AJ, Kaever V, Kazmierczak BI. Type IV Pilus Assembly in Pseudomonas aeruginosa over a Broad Range of Cyclic di-GMP Concentrations. Journal Of Bacteriology 2012, 194: 4285-4294. PMID: 22685276, PMCID: PMC3416225, DOI: 10.1128/jb.00803-12.Peer-Reviewed Original ResearchConceptsType IV piliPilus assemblyDiguanylate cyclasesSurface organellesGGDEF/EAL domain proteinsType IV pilus assemblyPolar type IV piliEAL domain proteinsAssembly of piliGMP concentrationSuppressor screenCaulobacter crescentusDiguanylate cyclaseDomain proteinsSuppressor mutationsAdditional regulatorsSuppressor strainsRobust biofilmsDifferent environmental conditionsAssembly defectsNegative regulatorMicrocolony formationSurface piliFimXP. aeruginosaThe Carbon Monoxide Releasing Molecule CORM-2 Attenuates Pseudomonas aeruginosa Biofilm Formation
Murray TS, Okegbe C, Gao Y, Kazmierczak BI, Motterlini R, Dietrich LE, Bruscia EM. The Carbon Monoxide Releasing Molecule CORM-2 Attenuates Pseudomonas aeruginosa Biofilm Formation. PLOS ONE 2012, 7: e35499. PMID: 22563385, PMCID: PMC3338523, DOI: 10.1371/journal.pone.0035499.Peer-Reviewed Original ResearchConceptsCORM-2 treatmentP. aeruginosa lung infectionP. aeruginosaAeruginosa lung infectionCORM-2Clinical P. aeruginosaMolecule CORM-2Current antimicrobial agentsChronic infectionLung infectionNew therapiesRelated infectionsNon-mucoid strainsReactive oxygen speciesInfectionNovel therapeutic propertiesTherapeutic propertiesAntimicrobial agentsAdditive effectPseudomonas aeruginosaBiofilm formationOxygen speciesTreatmentAeruginosa
2011
Innate immune responses to Pseudomonas aeruginosa infection
Lavoie EG, Wangdi T, Kazmierczak BI. Innate immune responses to Pseudomonas aeruginosa infection. Microbes And Infection 2011, 13: 1133-1145. PMID: 21839853, PMCID: PMC3221798, DOI: 10.1016/j.micinf.2011.07.011.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBacterial ProteinsComplement System ProteinsCytokinesDendritic CellsHumansImmunity, InnateInflammasomesLipopolysaccharidesLungLymphocytesMacrophages, AlveolarMiceMice, KnockoutNeutrophilsPneumoniaPseudomonas aeruginosaPseudomonas InfectionsReceptors, Pattern RecognitionSignal Transduction
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