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KMID : 0359320200600030173
Korean Journal of Veterinary Research
2020 Volume.60 No. 3 p.173 ~ p.177
Genotypic characterization of fluoroquinolone-resistant Escherichia coli isolates from edible offal
Son Se-Hyun

Seo Kwang-Won
Kim Yeong-Bin
Noh Eun-Bi
Lee Keun-Woo
Oh Tae-Ho
Kim Seung-Joon
Song Jae-Chan
Kim Tae-Wan
Lee Young-Ju
Abstract
Edible offal is easily contaminated by Escherichia coli (E. coli) and fluoroquinolone (FQ)-resistant E. coli is considered a serious public health problem, thus, this study investigated the genetic characteristics of FQ-resistant E. coli from edible offal. A total of 22 FQ-resistant E. coli isolates were tested. A double mutation in each gyrA and parC led the highest MIC. Four (18.2%) isolates carried plasmid-mediated quinolone resistance genes. The fimH, eaeA, escV, astA, and iucC genes were confirmed. Seventeen isolates (77.3%) were positive for plasmid replicons. The isolates showed high genetic heterogeneity based on pulsed-field gel electrophoresis patterns.
KEYWORD
Escherichia coli, edible offal, fluoroquinolones, quinolone resistance-determining region, molecular typing
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