2015
The contribution of extended-spectrum &bgr;-lactamases to multidrug-resistant infections in children
Murray TS, Peaper DR. The contribution of extended-spectrum &bgr;-lactamases to multidrug-resistant infections in children. Current Opinion In Pediatrics 2015, 27: 124-131. PMID: 25565574, DOI: 10.1097/mop.0000000000000182.Peer-Reviewed Original ResearchMeSH KeywordsAnti-Bacterial AgentsBeta-Lactam ResistanceBeta-LactamasesChildChild, PreschoolCommunity-Acquired InfectionsCross InfectionDrug Resistance, MultipleEscherichia coliEscherichia coli InfectionsGram-Negative Bacterial InfectionsHumansInfantKlebsiella InfectionsKlebsiella pneumoniaeMicrobial Sensitivity TestsPrevalenceConceptsMultidrug-resistant infectionsGram-negative rodsProlonged fecal carriageAntibiotic prescribing practicesPrevious antibiotic useExtended-spectrum β-lactamasesCommon risk factorsThird-generation cephalosporinsDiagnostic toolAppropriate therapyChallenging infectionsPrescribing practicesNeonatal ICULaboratory criteriaNew diagnostic toolsRisk factorsAntibiotic useFecal carriageCommunity transmissionClinical implicationsInfectionCephalosporin resistanceKlebsiella pneumoniaeReporting criteriaΒ-lactamases
2013
Rapid detection of carbapenemase activity through monitoring ertapenem hydrolysis in Enterobacteriaceae with LCMS/MS
Peaper DR, Kulkarni MV, Tichy AN, Jarvis M, Murray TS, Hodsdon ME. Rapid detection of carbapenemase activity through monitoring ertapenem hydrolysis in Enterobacteriaceae with LCMS/MS. Bioanalysis 2013, 5: 147-157. PMID: 23330558, PMCID: PMC5753620, DOI: 10.4155/bio.12.310.Peer-Reviewed Original ResearchConceptsLife-threatening infectionsIll patientsGram-negative rodsDiagnostic testsExpression of carbapenemasesAvailable diagnostic testsRapid diagnostic testsRatios of metabolitesLC-MS/MSCarbapenemase activityHodge testCarbapenem resistanceCarbapenemase productionCarbapenem antibioticsΒ-lactam antibioticsThreshold cutoffDA increaseErtapenem hydrolysisLC-MS/MS methodPatientsClinical laboratoriesAntibioticsLCMS/MSInfectionPhysiological levels