Extended‐spectrum beta‐lactamase‐producing Escherichia coli harbouring sul and mcr ‐ 1 genes isolates from fish gut contents in the Mekong Delta, Vietnam

Autor: Nguyen Thanh Phuong, Y. Yamamoto, Atsushi Hinenoya, H.M. Huyen, Tran Thi Tuyet Hoa, K. Harada, Tatsuya Nakayama
Rok vydání: 2019
Předmět:
Zdroj: Letters in Applied Microbiology. 71:78-85
ISSN: 1472-765X
0266-8254
Popis: This study investigated the existence of sulfonamides and colistin resistance genes among extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli recovered from fish gut in Vietnam and evaluated the susceptibility patterns of the ESBL-producing E. coli to relevant antimicrobials. A total of 88 ESBL-producing E. coli isolates were analysed for the presence of the ESBLs, sul (1, 2, 3) and mcr (1-3) genes by PCR. Antimicrobial resistance phenotypes of isolates were determined by disc diffusion. Results showed that: (i) A high prevalence of 94·3% of sulfonamide resistance was observed in 88 isolates. Moreover, the existence of 2·3% of ESBL-producing E. coli harbouring mcr-1 gene were detected; (ii) The phylogenetic types A and B1 were most frequent, and the blaCTX-M group1 and blaTEM genes encoding ESBL were detected in 47·7% of the isolates; (iii) ESBL-producing E. coli harbouring mcr-1 gene exhibited resistance to 11 antibiotics. The existence of mcr-1 and sul1,2,3 genes and the extremely high level of multiple drug resistance in all ESBL-producing E. coli isolates obtained from sampled fish in Vietnam is a major concern. Therefore, it is imperative to monitor ESBL-producing E. coli in the river waters of Vietnam.
Databáze: OpenAIRE
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