Search results for "DNA Topoisomerase IV"

showing 2 items of 2 documents

Mechanisms of quinolone resistance in Aeromonas species isolated from humans, water and eels.

2009

Mechanisms of resistance were determined in 33 quinolone-resistant isolates of the species Aeromonas hydrophila, Aeromonas caviae, Aeromonas media, Aeromonas salmonicida, Aeromonas popoffii and Aeromonas veronii, recovered from humans, freshwater and eels. The quinolone resistance-determining regions (QRDRs) of gyrA and parC genes were sequenced in these resistant strains, as well as in 8 quinolone-sensitive Aeromonas used as controls. All quinolone-resistant Aeromonas carried point mutations in the gyrA QRDR at codon 83, respectively giving rise to substitutions Ser(83)-->Ile (32 strains) or Ser(83)-->Val (1 strain). Almost half of these isolates (48%) carried additional point mutations in…

DNA Topoisomerase IVDNA BacterialAeromonas caviaemedicine.drug_classDNA Mutational AnalysisMutation MissenseDrug resistanceMicrobial Sensitivity TestsQuinolonesMicrobiologyMicrobiologyBacterial ProteinsDrug Resistance BacterialmedicineAnimalsHumansPoint MutationMolecular BiologyEelsbiologyGeneral MedicineSequence Analysis DNAbiochemical phenomena metabolism and nutritionQuinolonebiology.organism_classificationAnti-Bacterial AgentsAeromonas hydrophilaAeromonas salmonicidaAeromonasAmino Acid SubstitutionDNA GyraseAeromonas mediaAeromonasGram-Negative Bacterial InfectionsWater MicrobiologyAeromonas veroniiResearch in microbiology
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Spontaneous Quinolone Resistance in the Zoonotic Serovar of Vibrio vulnificus

2009

ABSTRACT This work demonstrates that Vibrio vulnificus biotype 2, serovar E, an eel pathogen able to infect humans, can become resistant to quinolone by specific mutations in gyrA (substitution of isoleucine for serine at position 83) and to some fluoroquinolones by additional mutations in parC (substitution of lysine for serine at position 85). Thus, to avoid the selection of resistant strains that are potentially pathogenic for humans, antibiotics other than quinolones must be used to treat vibriosis on farms.

DNA Topoisomerase IVDNA BacterialSerotypeBiologiamedicine.drug_classMolecular Sequence DataAntibioticsMutation MissenseMicrobiologiaPublic Health MicrobiologyVibrio vulnificusQuinolonesApplied Microbiology and BiotechnologyDNA gyraseMicrobiologyBacterial ProteinsVibrionaceaeDrug Resistance BacterialmedicineAnimalsVibrio vulnificusPathogenEelsEcologybiologySequence Analysis DNAbiology.organism_classificationQuinoloneVirologyAnti-Bacterial AgentsDNA GyrasebacteriaBacteriaFood ScienceBiotechnologyApplied and Environmental Microbiology
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