Detection of qnr genes among Escherichia coli isolates of animal origin and complete sequence of the conjugative qnrB19-carrying plasmid pQNR2078

Detection of qnr genes among Escherichia coli isolates of animal origin and complete sequence of the conjugative qnrB19-carrying plasmid pQNR2078.

OBJECTIVES The aims of this study were to identify qnr genes among quinolone-resistant Escherichia coli isolates from defined disease conditions of companion and farm animals obtained in the BfT-GermVet study, and to gain insight into their localization and the organization of the qnr gene regions. METHODS The qnr genes were detected by PCR and confirmed by sequencing. qnr-positive isolates w...

Detection of plasmid-mediated qnr genes among the quinolone-resistant Escherichia coli isolates in Iran.

INTRODUCTION Plasmid-mediated quinolone resistance, which complicates treatment, has been increasingly identified in Escherichia coli isolates worldwide. The purpose of this study was to identify the plasmid-mediated qnrA and qnrB genes among the quinolone-resistant Escherichia coli isolated from urinary tract infections in Iran. METHODOLOGY A total of 140 Escherichia coli isolates were colle...

PCR Detection of Plasmid Mediated TEM, SHV and AmpC β-Lactamases in Community and Nosocomial Urinary Isolates of Escherichia coli

Complete nucleotide sequence of cfr-carrying IncX4 plasmid pSD11 from Escherichia coli.

We report the complete nucleotide sequence of a plasmid carrying the multiresistance gene cfr. This plasmid was isolated from an Escherichia coli strain of swine origin in 2011. This 37,672-bp plasmid, pSD11, had an IncX4 backbone similar to those of the IncX4 plasmids obtained from the United States and Australia, in which the cfr gene was flanked by two copies of IS26 and a truncated Tn1331 w...

Extra intestinal pathogenic Escherichia coli from human and avian origin: Detection of the most common virulence-encoding genes

Pathogenic Escherichia coli strains cause a wide range of extra intestinal infections including urinary tract infection in humans and colibacillosis in poultry. They are classified into uropathogenic E. coli (UPEC) and avian pathogenic E. coli (APEC) with genetic similarities and variations. Their pathogenicity is related to the virulence-encoding genes like sfa</...