2023
Pericytes are protective in experimental pneumococcal meningitis through regulating leukocyte infiltration and blood–brain barrier function
Teske N, Dyckhoff-Shen S, Beckenbauer P, Bewersdorf J, Engelen-Lee J, Hammerschmidt S, Kälin R, Pfister H, Brouwer M, Klein M, Glass R, van de Beek D, Koedel U. Pericytes are protective in experimental pneumococcal meningitis through regulating leukocyte infiltration and blood–brain barrier function. Journal Of Neuroinflammation 2023, 20: 267. PMID: 37978545, PMCID: PMC10655320, DOI: 10.1186/s12974-023-02938-z.Peer-Reviewed Original ResearchConceptsModel of pneumococcal meningitisPneumococcal meningitisLeukocyte infiltrationAnimal model of pneumococcal meningitisPrevented blood-brain barrierToll-like receptor inhibitorsDegree of leukocyte infiltrationSerotypes of Streptococcus pneumoniaeUnfavorable disease courseBlood-brain barrier disruptionHuman pericytesExperimental pneumococcal meningitisBlood-brain barrier integrityRegulating leukocyte infiltrationBlood-brain barrier functionRegulation of cerebral blood flowAdult mouse modelInfection in vivoUpregulation of chemokine expressionIncreased cerebral edemaMaintenance of blood-brain barrier integrityBlood-brain barrierCerebral blood flowMouse meningitis modelIn vitro studiesCSF-contacting neurons respond to Streptococcus pneumoniae and promote host survival during central nervous system infection
Prendergast A, Jim K, Marnas H, Desban L, Quan F, Djenoune L, Laghi V, Hocquemiller A, Lunsford E, Roussel J, Keiser L, Lejeune F, Dhanasekar M, Bardet P, Levraud J, van de Beek D, Vandenbroucke-Grauls C, Wyart C. CSF-contacting neurons respond to Streptococcus pneumoniae and promote host survival during central nervous system infection. Current Biology 2023, 33: 940-956.e10. PMID: 36791723, DOI: 10.1016/j.cub.2023.01.039.Peer-Reviewed Original ResearchConceptsCentral nervous systemCerebrospinal fluidSensory neuronsNervous systemStreptococcus pneumoniaeCentral nervous system infectionBlockade of neurotransmissionCentral sensory neuronsNervous system infectionHost survivalPeripheral nervous systemCell-specific ablationEpileptic-like seizuresCSF-contacting neuronsSupernatants of cellsPneumococcal meningitisSystem infectionBitter taste receptorsCSF infectionPneumoniae infectionNeurotropic virusesSpinal cordPathogenic bacteriaPostural controlMeningitis
2021
Serotype Distribution of Remaining Pneumococcal Meningitis in the Mature PCV10/13 Period: Findings from the PSERENADE Project
Quesada M, Yang Y, Bennett JC, Hayford K, Zeger SL, Feikin DR, Peterson ME, Cohen AL, Almeida SCG, Ampofo K, Ang M, Bar-Zeev N, Bruce MG, Camilli R, Chacón G, Ciruela P, Cohen C, Corcoran M, Dagan R, De Wals P, Desmet S, Diawara I, Gierke R, Guevara M, Hammitt LL, Hilty M, Ho PL, Jayasinghe S, Kleynhans J, Kristinsson KG, Ladhani SN, McGeer A, Mwenda JM, Nuorti JP, Oishi K, Ricketson LJ, Sanz JC, Savrasova L, Setchanova LP, Smith A, Valentiner-Branth P, Valenzuela MT, van der Linden M, van Sorge NM, Varon E, Winje BA, Yildirim I, Zintgraff J, Knoll MD. Serotype Distribution of Remaining Pneumococcal Meningitis in the Mature PCV10/13 Period: Findings from the PSERENADE Project. Microorganisms 2021, 9: 738. PMID: 33916227, PMCID: PMC8066874, DOI: 10.3390/microorganisms9040738.Peer-Reviewed Original ResearchHigher-valency PCVsPneumococcal meningitisSerotype distributionPneumococcal meningitis incidencePneumococcal serotype replacementAfrican meningitis beltPneumococcal meningitis casesYears of agePCV13 typesSerotype replacementMeningitis casesVaccine introductionMeningitis beltMeningitis incidenceVaccination programInvestigational productMeningitisSerotype 3SerotypesPCVRegression modelsAgeYearsPCV10/13PCV10
2020
Recognition and Outcomes of Pneumococcal Meningitis in 2 Tertiary Pediatric Hospitals Since the Introduction of the 13-Valent Pneumococcal Conjugate Vaccine
Stevens JP, Lively A, Jerris R, Yildirim I, Lantis P. Recognition and Outcomes of Pneumococcal Meningitis in 2 Tertiary Pediatric Hospitals Since the Introduction of the 13-Valent Pneumococcal Conjugate Vaccine. Pediatric Emergency Care 2020, 38: e354-e359. PMID: 33181795, DOI: 10.1097/pec.0000000000002288.Peer-Reviewed Original ResearchConceptsPneumococcal conjugate vaccineLumbar puncturePneumococcal meningitisConjugate vaccineMeningeal signsLow suspicionMental statusPositive cerebrospinal fluid culturesLonger hospital lengthStreptococcus pneumoniae meningitisCerebrospinal fluid culturesCranial nerve palsyHours of admissionTertiary pediatric hospitalPoor clinical outcomeTertiary healthcare systemPneumococcal meningitis casesPneumococcal immunizationPneumoniae meningitisHospital lengthNerve palsyPrimary outcomeAntibiotic administrationClinical outcomesPediatric hospital
2018
Mast Cells Are Activated by Streptococcus pneumoniae In Vitro but Dispensable for the Host Defense Against Pneumococcal Central Nervous System Infection In Vivo
Fritscher J, Amberger D, Dyckhoff S, Bewersdorf J, Masouris I, Voelk S, Hammerschmidt S, Schmetzer H, Klein M, Pfister H, Koedel U. Mast Cells Are Activated by Streptococcus pneumoniae In Vitro but Dispensable for the Host Defense Against Pneumococcal Central Nervous System Infection In Vivo. Frontiers In Immunology 2018, 9: 550. PMID: 29616039, PMCID: PMC5867309, DOI: 10.3389/fimmu.2018.00550.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBacterial ProteinsCell DegranulationCells, CulturedCentral Nervous SystemCromolyn SodiumHumansImmunity, InnateMaleMast CellsMeningitis, PneumococcalMiceMice, Inbred C57BLMice, TransgenicMutationPneumococcal InfectionsProto-Oncogene Proteins c-kitStreptococcus pneumoniaeStreptolysinsConceptsBone marrow-derived mast cellsCentral nervous systemSystemic infection in vivoMast cellsBone-marrow-derived mast cell degranulationMast cell engraftmentMouse bone marrow-derived mast cellsBacterial infectionsMarrow-derived mast cellsCerebrospinal fluidMutant mouse strainsMast cell-deficientExperimental pneumococcal meningitisMast cell stabilizerSystemic bacterial infectionInfection in vivoDisease phenotypeCell deficiencyCSF pleocytosisPneumococcal serotypesC-kitCell engraftmentPneumococcal meningitisMouse strainsNervous systemNovel and preclinical treatment strategies in pneumococcal meningitis
Bewersdorf J, Grandgirard D, Koedel U, Leib S. Novel and preclinical treatment strategies in pneumococcal meningitis. Current Opinion In Infectious Diseases 2018, 31: 85-92. PMID: 29095719, DOI: 10.1097/qco.0000000000000416.Peer-Reviewed Original ResearchConceptsAdjuvant therapyPneumococcal meningitisNew adjuvant therapiesSystematic clinical testingProtein-based pneumococcal vaccinesPreclinical treatment strategiesPneumococcal conjugate vaccineAnti-inflammatory therapyImprove disease outcomesToxic bacterial productsMatrix metalloproteinase inhibitorsNonbacteriolytic antibioticsAdjuvant dexamethasoneLife-threatening diseaseMeningeal inflammationBacterial meningitisSerotype replacementTreatment optionsConjugate vaccinePneumococcal vaccineMorbidity rateComplement inhibitorsTreatment strategiesSuppress inflammationMeningitis
2016
Genetic profiles and antimicrobial resistance of Streptococcus pneumoniae non-PCV10 serotype isolates recovered from meningitis cases in Salvador, Brazil
Azevedo J, Dos Anjos ES, Cordeiro S, Dos Santos M, Escobar E, Lobo P, Carvalho MD, Reis M, Reis J, Campos L. Genetic profiles and antimicrobial resistance of Streptococcus pneumoniae non-PCV10 serotype isolates recovered from meningitis cases in Salvador, Brazil. Journal Of Medical Microbiology 2016, 65: 1164-1170. PMID: 27599851, DOI: 10.1099/jmm.0.000346.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedBrazilChildChild, PreschoolDrug Resistance, BacterialElectrophoresis, Gel, Pulsed-FieldFemaleGenetic VariationGenotypeHospitalsHumansInfantMaleMeningitis, PneumococcalMicrobial Sensitivity TestsMiddle AgedMolecular EpidemiologyMultilocus Sequence TypingMultiplex Polymerase Chain ReactionPneumococcal VaccinesSerogroupSerotypingStreptococcus pneumoniaeYoung AdultConceptsPost-vaccine periodMulti-locus sequence typing resultsIntroduction of PCV10Non-vaccine serotypesCases of meningitisPneumococcal conjugate vaccineBenefits of vaccinationChildhood vaccination programsAntimicrobial susceptibility testingMulti-locus sequence typingPCV10 introductionPneumococcal meningitisConjugate vaccineReference hospitalSerotype 19AMeningitis casesSerotype 12FVaccination programMore antibioticsSerotype isolatesQuellung reactionE-testStreptococcus pneumoniaeMeningitisSusceptibility testing
2015
Pneumococcal meningitis and vaccine effects in the era of conjugate vaccination: results of 20 years of nationwide surveillance in Germany
Imöhl M, Möller J, Reinert R, Perniciaro S, van der Linden M, Aktas O. Pneumococcal meningitis and vaccine effects in the era of conjugate vaccination: results of 20 years of nationwide surveillance in Germany. BMC Infectious Diseases 2015, 15: 61. PMID: 25885764, PMCID: PMC4335684, DOI: 10.1186/s12879-015-0787-1.Peer-Reviewed Original ResearchConceptsInvasive pneumococcal diseaseMeningitis casesPneumococcal meningitisQuellung reactionGerman National Reference CenterNeufeld Quellung reactionPre-PCV7 periodPneumococcal conjugate vaccinePost-vaccination periodCase mortality rateNational Reference CenterAntibiotic nonsusceptibilityIPD isolatesPneumococcal diseaseVaccination recommendationsVaccine recommendationsConjugate vaccineVaccine serotypesBroth microdilution methodVaccine effectsNationwide surveillancePneumococcal isolatesSerotype prevalenceReference centerMortality rate
2001
New Perspectives on Pneumococcal Meningitis
Aronin S, Quagliarello V. New Perspectives on Pneumococcal Meningitis. Hospital Practice 2001, 36: 43-51. PMID: 11220360, DOI: 10.3810/hp.2001.02.228.Peer-Reviewed Original Research
2000
Clonally Related Penicillin-Nonsusceptible Streptococcus pneumoniae Serotype 14 from Cases of Meningitis in Salvador, Brazil
Ko A, Reis J, Coppola S, Gouveia E, Cordeiro S, Lôbo T, Pinheiro R, Salgado K, Dourado C, Tavares-Neto J, Rocha H, Reis M, Johnson W, Riley L. Clonally Related Penicillin-Nonsusceptible Streptococcus pneumoniae Serotype 14 from Cases of Meningitis in Salvador, Brazil. Clinical Infectious Diseases 2000, 30: 78-86. PMID: 10619737, DOI: 10.1086/313619.Peer-Reviewed Original ResearchConceptsPenicillin-nonsusceptible isolatesSerotype 14 isolatesSerotype 14Pneumococcal meningitisActive hospital-based surveillanceCases of meningitisHospital-based surveillancePrevious antibiotic useIntermediate-level resistanceSerotype 14 strainsPolymerase chain reaction analysisAntibiotic useChain reaction analysisPrevalent serotypesMeningitisUnrelated patternsPCR patternsCity of SalvadorPatientsStreptococcus pneumoniae serotype 14Reaction analysisIsolatesLarge proportionGeographic areasInfection
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