Antibiotic susceptibilities and genetic characteristics of extended-spectrum beta-lactamase-producing Escherichia coli isolates from stools of pediatric diarrhea patients in Surabaya, Indonesia

Eddy Bagus Wasito, Katsumi Shigemura, Kayo Osawa, Alpha Fardah, Akiho Kanaida, Dadik Raharjo, K. Kuntaman, Usman Hadi, Sugeng Harijono, Subijanto Marto Sudarmo, Tatsuya Nakamura, Keigo Shibayama, Masato Fujisawa, Toshiro Shirakawa

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

SUMMARY: The purpose of this study was to investigate extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli isolates from pediatric (aged 0 to 3 years) diarrhea patients in Surabaya, Indonesia, where this kind of survey is rare; our study included assessment of their antibiotic susceptibilities, as well as ESBL typing, multilocus sequence typing (MLST), and diarrheagenic E. coli (DEC)-typing. ESBL-producing E. coli were detected in 18.8% of all the samples. Many ESBL-producing E. coli had significantly lower susceptibility to gentamicin (p < 0.0001) and the quinolones nalidixic acid (p=0.004) and ciprofloxacin (p < 0.0001) than non-producers. In ESBL-producing E. coli, 84.0% of strains expressed CTX-M-15 alone or in combination with other ESBL types. MLST revealed that 24.0% of ESBL-producers had sequence type 617, all of which expressed the CTX-M-15 gene; we also detected expression of 3 DEC-related genes: 2 enteroaggregative E. coli genes and 1 enteropathogenic E. coli gene. In conclusion, CTX-M-15-type ESBL-producing E. coli ST617 appear to have spread to Indonesia.

Original languageEnglish
Pages (from-to)378-382
Number of pages5
JournalJapanese Journal of Infectious Diseases
Volume70
Issue number4
DOIs
Publication statusPublished - 2017

Keywords

  • CTX-M-15
  • Diarrheagenic Escherichia coli
  • Extended-spectrum beta-lactamase (ESBL)
  • ST617

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