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Characteristics of extended-spectrum β-lactamase-producing Escherichia coli isolated from fecal samples of piglets with diarrhea in central and southern Taiwan in 2015.

Abstract The production of extended-spectrum β-lactamases (ESBLs) confer resistance to the commonly used beta-lactam antimicrobials and ESBL-producing bacteria render treatment difficulty in human and veterinary medicine. ESBL-producing bacteria have emerged in livestock in recent years, which may raise concerns regarding possible transfer of such bacteria through the food chain. The swine industry is important in Taiwan, but investigations regarding the status of ESBL in swine are limited.
PMID
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Authors

Mayor MeshTerms
Keywords

Escherichia coli

Extended spectrum β-lactamase

Multilocus sequence typing

Journal Title bmc veterinary research
Publication Year Start




PMID- 28249582
OWN - NLM
STAT- MEDLINE
DA  - 20170302
DCOM- 20170308
LR  - 20170308
IS  - 1746-6148 (Electronic)
IS  - 1746-6148 (Linking)
VI  - 13
IP  - 1
DP  - 2017 Mar 01
TI  - Characteristics of extended-spectrum beta-lactamase-producing Escherichia coli
      isolated from fecal samples of piglets with diarrhea in central and southern
      Taiwan in 2015.
PG  - 66
LID - 10.1186/s12917-017-0986-7 [doi]
AB  - BACKGROUND: The production of extended-spectrum beta-lactamases (ESBLs) confer
      resistance to the commonly used beta-lactam antimicrobials and ESBL-producing
      bacteria render treatment difficulty in human and veterinary medicine.
      ESBL-producing bacteria have emerged in livestock in recent years, which may
      raise concerns regarding possible transfer of such bacteria through the food
      chain. The swine industry is important in Taiwan, but investigations regarding
      the status of ESBL in swine are limited. RESULTS: We collected 275 fecal swab
      samples from piglets with diarrhea in 16 swine farms located in central and
      southern Taiwan from January to December 2015 and screened them for
      ESBL-producing Escherichia coli. ESBL producers were confirmed phenotypically by 
      combination disc test and genotypically by polymerase chain reaction and DNA
      sequencing. The occurrence rate of ESBL-producing E. coli was 19.7% (54 of 275), 
      and all were obtained in swine farms located in southern Taiwan. bla
      CTX-M-1-group and bla CTX-M-9-group were the two bla CTX-M groups found. bla
      CTX-M-55 (34 of 54; 63.0%) and bla CTX-M-15 (16 of 54; 29.6%), which belong to
      the bla CTX-M-1-group, were the two major bla gene types, whereas bla CTX-M-65
      was the only type found in the bla CTX-M-9 group. Twenty-seven strains contained 
      bla TEM-1, and the other 27 strains contained bla TEM-116. One strain found in
      Pingtung harbored three bla genes: bla TEM-116, bla CTX-M-55, and bla CTX-M-65.
      ESBL-producing E. coli exhibited a multidrug-resistant phenotype, and multilocus 
      sequence typing revealed that the ST10 clonal complexes, including ST10, 167, 44,
      and 617 accounted for 35% (19 of 54) of these strains. CONCLUSIONS:
      ESBL-producing E. coli from piglets with diarrhea were isolated from swine farms 
      located in southern Taiwan. The most commonly detected bla were bla CTX-M-15 and 
      bla CTX-M-55. The ST10 clonal complexes comprised most of our ESBL-producing E.
      coli strains. Fecal shedding from swine may contaminate the environment,
      resulting in public health concerns; thus, continued surveillance of ESBL is
      essential in swine and in other food animals.
FAU - Lee, Wan-Chen
AU  - Lee WC
AD  - Department of Veterinary Medicine, School of Veterinary Medicine, College of
      Bio-Resources and Agriculture, National Taiwan University, Taipei, 106, Taiwan.
FAU - Yeh, Kuang-Sheng
AU  - Yeh KS
AD  - Department of Veterinary Medicine, School of Veterinary Medicine, College of
      Bio-Resources and Agriculture, National Taiwan University, Taipei, 106, Taiwan.
      [email protected]
AD  - National Taiwan University Veterinary Hospital, Taipei, 106, Taiwan.
      [email protected]
LA  - eng
PT  - Journal Article
DEP - 20170301
PL  - England
TA  - BMC Vet Res
JT  - BMC veterinary research
JID - 101249759
RN  - EC 3.5.2.6 (beta-Lactamases)
SB  - IM
MH  - Animals
MH  - Diarrhea/microbiology/*veterinary
MH  - Escherichia coli/enzymology/genetics/*isolation & purification
MH  - Escherichia coli Infections/microbiology/*veterinary
MH  - Feces/microbiology
MH  - Swine
MH  - Swine Diseases/*microbiology
MH  - Taiwan
MH  - beta-Lactamases/*biosynthesis
PMC - PMC5333440
OTO - NOTNLM
OT  - Escherichia coli
OT  - Extended spectrum beta-lactamase
OT  - Multilocus sequence typing
EDAT- 2017/03/03 06:00
MHDA- 2017/03/09 06:00
CRDT- 2017/03/03 06:00
PHST- 2016/09/27 [received]
PHST- 2017/02/23 [accepted]
AID - 10.1186/s12917-017-0986-7 [doi]
AID - 10.1186/s12917-017-0986-7 [pii]
PST - epublish
SO  - BMC Vet Res. 2017 Mar 1;13(1):66. doi: 10.1186/s12917-017-0986-7.

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