Streptococcus pneumoniae Isolates of among Fluoroquinolone-Resistant Clinical Prevalence of a Putative Efflux Mechanism

نویسندگان

  • Nigel P. Brenwald
  • Martin J. Gill
  • Richard Wise
  • NIGEL P. BRENWALD
  • MARTIN J. GILL
چکیده

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منابع مشابه

Overexpression of patA and patB, which encode ABC transporters, is associated with fluoroquinolone resistance in clinical isolates of Streptococcus pneumoniae.

Fifty-seven clinical isolates of Streptococcus pneumoniae were divided into four groups based on their susceptibilities to the fluoroquinolones ciprofloxacin and norfloxacin and the dyes ethidium bromide and acriflavine. Comparative reverse transcription-PCR was used to determine the level of expression of the genes patA and patB, which encode putative ABC transporters. Overexpression was obser...

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Detection of Efflux Pumps Genes in Fluoroquinolones Resistant and Sensitive strains of Escherichia coli isolated from Patients with Urinary Tract Infection in Qom

Abstract Background and Objectives: Efflux pumps are one of the main mechanisms for antibiotic resistance in Escherichia coli strains. The aim of this study was to investigate the relationship between 5 different efflux pump genes; acrA, acrB, emrA, emrB and mdtk and fluoroquinolone resistance in E.coli Isolated from patients with urinary tract infections in Qom. Methods: In this descriptive cr...

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Are fluoroquinolone-susceptible isolates of Streptococcus pneumoniae really susceptible? A comparison of resistance mechanisms in Canadian isolates from 1997 and 2003.

OBJECTIVES To assess the prevalence of efflux and amino acid substitutions in ParC and GyrA in Canadian clinical isolates of fluoroquinolone-susceptible Streptococcus pneumoniae with levofloxacin MICs of 1 mg/L collected before the introduction of the respiratory fluoroquinolones (1995-1997) and after 7 years of use (2003). METHODS Quinolone resistance determining regions of parC and gyrA wer...

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The impact of Grammosciadium platycarpum Boiss. & Hausskn. extract on oqxA efflux pump gene expression in antibiotic resistant clinical isolates of Klebsiella pneumoniae using real time PCR

Background: Klebsiella pneumoniae is one of the most important causes of nosocomial infections, especially wound infection after surgery. One of the mechanisms of antibiotic resistance in K. pneumoniae strains, especially ciprofloxacin, is the presence of efflux pump. Objective: The aim of this study was to evaluate the anti-efflux activity of Grammosciadium platycarpum Boiss. & Hausskn. extrac...

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تاریخ انتشار 1998