scholarly journals First Report of an Escherichia coli Strain Carrying the Colistin Resistance Determinant mcr-1 from a Dog in South Korea

Antibiotics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 768
Author(s):  
Dong Chan Moon ◽  
Abraham Fikru Mechesso ◽  
Hee Young Kang ◽  
Su-Jeong Kim ◽  
Ji-Hyun Choi ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
South Korea ◽  
Companion Animals ◽  
Coli Strain ◽  
Colistin Resistance ◽  
First Report ◽  
E Coli ◽  
Risk Gene ◽  
Additional Resistance ◽  
Third Generation Cephalosporins

We studied the presence of the mobile colistin resistance gene mcr-1 in Escherichia coli isolates recovered from fecal and urine samples of companion animals, that were collected from South Korea in 2018 and 2019. The mcr-1 gene was detected in one colistin-resistant E. coli isolated from a diarrheic dog. The isolate exhibited additional resistance to multiple antimicrobials, including fluoroquinolones and third-generation cephalosporins. The mcr-1 carrying isolate belonged to ST160. The pulsed-field gel electrophoresis pattern of our strain differed from those ST160 E. coli strains previously identified from chickens in Korea. The mcr-1 gene was identified in the IncI2 plasmid. It was also transferred to E. coli J53 recipient strain, with a conjugation efficiency of 2.8 × 10−4. Average nucleotide identity analysis demonstrated that the mcr-1-carrying plasmid in this study was closely related to those from patients in Korea. To the best of our knowledge, this is the first report of mcr-1 carrying E. coli from a companion animal in South Korea. Our findings support One Health approach is necessary to prevent the dissemination of this high-risk gene.

scholarly journals Molecular survey of mcr1 and mcr2 plasmid mediated colistin resistance genes in Escherichia coli isolates of animal origin in Iran

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Kayhan Ilbeigi ◽  
Mahdi Askari Badouei ◽  
Hossein Vaezi ◽  
Hassan Zaheri ◽  
Sina Aghasharif ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Resistance Genes ◽  
Companion Animals ◽  
Multidrug Resistant ◽  
Animal Origin ◽  
Colistin Resistance ◽  
E Coli ◽  
High Level ◽  
Farming Industry

Abstract Objectives The emergence of colistin-resistant Enterobacteriaceae from human and animal sources is one of the major public health concerns as colistin is the last-resort antibiotic for treating infections caused by multidrug-resistant Gram-negative bacteria. We aimed to determine the prevalence of the prototype widespread colistin resistance genes (mcr-1 and mcr-2) among commensal and pathogenic Escherichia coli strains isolated from food-producing and companion animals in Iran. Results A total of 607 E. coli isolates which were previously collected from different animal sources between 2008 and 2016 used to uncover the possible presence of plasmid-mediated colistin resistance genes (mcr-1 and mcr-2) by PCR. Overall, our results could not confirm the presence of any mcr-1 or mcr-2 positive E. coli among the studied isolates. It is concluded that despite the important role of food-producing animals in transferring the antibiotic resistance, they were not the main source for carriage of mcr-1 and mcr-2 in Iran until 2016. This study suggests that the other mcr variants (mcr-3 to mcr-9) might be responsible for conferring colistin resistance in animal isolates in Iran. The possible linkage between pig farming industry and high level of mcr carriage in some countries needs to be clarified in future prospective studies.

scholarly journals First Report of Plasmid-Mediated Quinolone Resistance Determinant qnrS1 in an Escherichia coli Strain of Animal Origin in Italy

2009 ◽  
Vol 53 (7) ◽  
pp. 3112-3114 ◽  
Author(s):  
Marina Cerquetti ◽  
Aurora García-Fernández ◽  
Maria Giufrè ◽  
Daniela Fortini ◽  
Marisa Accogli ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Salmonella Enterica ◽  
Coli Strain ◽  
Quinolone Resistance ◽  
Resistance Determinant ◽  
Animal Origin ◽  
Animal Reservoir ◽  
First Report ◽  
E Coli ◽  
Positive Strain

ABSTRACT A qnrS1-positive strain of Escherichia coli was detected among 73 poultry isolates showing ciprofloxacin MICs of ≥0.125 μg/ml. The qnrS1 gene was associated with a Tn3-like transposon, as previously described to occur in a Salmonella enterica serovar Infantis strain of animal origin, but the plasmid scaffold carrying this element resembled that of a plasmid previously identified in Salmonella enterica serovar Dublin. These elements suggest genetic exchanges among Salmonella and E. coli and a potential animal reservoir for the qnr genes.

scholarly journals Characterization of Extended-Spectrum-β-Lactamases Produced by Escherichia coli Strains Isolated from Dogs in Poland

2015 ◽  
Vol 64 (3) ◽  
pp. 285-288 ◽  
Author(s):  
Magdalena Rzewuska ◽  
Ilona Stefańska ◽  
Magdalena Kizerwetter-Świda ◽  
Dorota Chrobak-Chmiel ◽  
Paulina Szczygielska ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Companion Animals ◽  
Small Animal ◽  
Common Cause ◽  
First Report ◽  
E Coli ◽  
Veterinary Practice ◽  
Extended Spectrum

Escherichia coli is a common cause of infections in companion animals. In recent years the increasing prevalence of resistance to β-lactams, including extended-spectrum cephalosporins, antimicrobials frequently used in small animal veterinary practice, was observed in canine isolates of E. coli. The aim of this study was to detect and to characterize extended-spectrum β-lactamases (ESBLs) produced by E. coli isolated from diseased dogs in Poland. Four isolates out of 119 studied (3.4%) were ESBL-positive. They harbored the blaSHV-12, blaCTX-M-15, and blaTEM-116 genes. This study provides the first report of the occurrence of ESBL-producing E. coli in dogs in Poland.

scholarly journals Genome Sequence of Avian Escherichia coli Strain IHIT25637, an Extraintestinal Pathogenic E. coli Strain of ST131 Encoding Colistin Resistance Determinant MCR-1

2016 ◽  
Vol 4 (5) ◽  
Author(s):  
Christa Ewers ◽  
Stephan Göttig ◽  
Maria Bülte ◽  
Sophie Fiedler ◽  
Manuela Tietgen ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Multidrug Resistance ◽  
Resistance Gene ◽  
Genome Sequence ◽  
Coli Strain ◽  
Sequence Type ◽  
Resistance Determinant ◽  
Colistin Resistance ◽  
E Coli ◽  
Expec Strain

Sequence type 131 (ST131) is one of the predominant Escherichia coli lineages among extraintestinal pathogenic E. coli (ExPEC) that causes a variety of diseases in humans and animals and frequently shows multidrug resistance. Here, we report the first genome sequence of an ST131-ExPEC strain from poultry carrying the plasmid-encoded colistin resistance gene mcr-1 .

scholarly journals Genomic Insights into a Colistin-Resistant Uropathogenic Escherichia coli Strain of O23:H4-ST641 Lineage Harboring mcr-1.1 on a Conjugative IncHI2 Plasmid from Egypt

2021 ◽  
Vol 9 (4) ◽  
pp. 799
Author(s):  
Azza S. Zakaria ◽  
Eva A. Edward ◽  
Nelly M. Mohamed
Keyword(s):  
Escherichia Coli ◽  
Multidrug Resistant ◽  
Coli Strain ◽  
Colistin Resistance ◽  
E Coli ◽  
Agriculture Sector ◽  
Potential Reservoir ◽  
Clinical Source ◽  
Tract Infections

The reintroduction of colistin, a last-resort antibiotic for multidrug-resistant pathogens, resulted in the global spread of plasmid-mediated mobile colistin resistance (mcr) genes. Our study investigated the occurrence of colistin resistance among Escherichia coli isolated from patients with urinary tract infections admitted to a teaching hospital in Egypt. Out of 67 isolates, three isolates were colistin-resistant, having a minimum inhibitory concentration of 4 µg/mL and possessing the mcr-1 gene. A double mechanism of colistin resistance was detected; production of mcr-1 along with amino acid substitution in PmrB (E123D and Y358N) and PmrA (G144S). Broth mating experiments inferred that mcr-1 was positioned on conjugative plasmids. Whole-genome sequencing of EC13049 indicated that the isolate belonged to O23:H4-ST641 lineage and to phylogroup D. The mcr-1-bearing plasmid corresponded to IncHI2 type with a notable similarity to other E. coli plasmids previously recovered from Egypt. The unbanned use of colistin in the Egyptian agriculture sector might have created a potential reservoir for the mcr-1 gene in food-producing animals that spread to humans. More proactive regulations must be implemented to prevent further dissemination of this resistance. This is the first characterization of mcr-1-carrying IncHI2:ST4 plasmid recovered from E. coli of a clinical source in Egypt.

Antimicrobial Resistance and Virulence Profiles of mcr-1–Positive Escherichia coli Isolated from Swine Farms in Heilongjiang Province of China

2020 ◽  
Vol 83 (12) ◽  
pp. 2209-2215 ◽  
Author(s):  
PING CHENG ◽  
YUQI YANG ◽  
JUNCHUAN ZHANG ◽  
FULEI LI ◽  
XIAOTING LI ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Resistance ◽  
Group Analysis ◽  
Heilongjiang Province ◽  
Colistin Resistance ◽  
Republic Of China ◽  
E Coli ◽  
Swine Farms ◽  
Additional Resistance ◽  
Food Animals

ABSTRACT The emergence and global distribution of the mcr-1 gene for colistin resistance have become a public concern because of threats to the role of colistin as the last line of defense against some bacteria. Because of the prevalence of mcr-1–positive Escherichia coli isolates in food animals, production of these animals has been regarded as one of the major sources of amplification and spread of mcr-1. In this study, 249 E. coli isolates were recovered from 300 fecal samples collected from swine farms in Heilongjiang Province, People's Republic of China. Susceptibility testing revealed that 186 (74.70%) of these isolates were colistin resistant, and 86 were positive for mcr-1. The mcr-1–positive isolates had extensive antimicrobial resistance profiles and additional resistance genes, including blaTEM, blaCTX-M, aac3-IV, tet(A), floR, sul1, sul2, sul3, and oqxAB. No mutations in genes pmrAB and mgrB were associated with colistin resistance. Phylogenetic group analysis revealed that the mcr-1–positive E. coli isolates belonged to groups A (52.33% of isolates), B1 (33.72%), B2 (5.81%), and D (8.14%). The prevalence of the virulence-associated genes iutA, iroN, fimH, vat, ompA, and traT was moderate. Seven mcr-1–positive isolates were identified as extraintestinal pathogenic. Among 20 mcr-1–positive E. coli isolates, multilocus sequence typing revealed that sequence type 10 was the most common (five isolates). The conjugation assays revealed that the majority of mcr-1 genes were transferable at frequencies of 7.05 × 10−7 to 7.57 × 10−4. The results of this study indicate the need for monitoring and minimizing the further dissemination of mcr-1 among E. coli isolates in food animals, particularly swine. HIGHLIGHTS

scholarly journals ISKpn40-Mediated Mobilization of the Colistin Resistance Gene mcr-3.11 in Escherichia coli

2020 ◽  
Vol 64 (10) ◽  
Author(s):  
Yu-Zhang He ◽  
Teng-Fei Long ◽  
Cai-Ping Chen ◽  
Bing He ◽  
Xing-Ping Li ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Resistance Gene ◽  
Wild Type ◽  
Colistin Resistance ◽  
Content Type ◽  
First Report ◽  
E Coli ◽  
Target Sites

ABSTRACT The mobile colistin resistance gene mcr-3 has globally disseminated since it was first reported in 2017 in Escherichia coli. In vitro mobilization assays in this study demonstrate the functionality of the composite transposon structure ISKpn40-mcr-3.11-dgkA-ISKpn40 in wild-type and recA− E. coli strains. These transpositions generated 4-bp duplications at the target sites. This is the first report demonstrating the mobility of the mcr-3.11 gene by transposition.

scholarly journals Antimicrobial resistance and mcr-1 gene in Escherichia coli isolated from poultry samples submitted to a bacteriology laboratory in South Africa

2021 ◽  
pp. 2662-2669
Author(s):  
Ibrahim Z. Hassan ◽  
Buks Wandrag ◽  
Johan J. Gouws ◽  
Daniel N. Qekwana ◽  
Vinny Naidoo
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Resistance ◽  
Coli Strain ◽  
Mitigation Strategies ◽  
Multiple Drug ◽  
Colistin Resistance ◽  
Antimicrobial Drugs ◽  
E Coli ◽  
Multiple Drug Resistant ◽  
Location Type

Background and Aim: Antimicrobial resistance (AMR) and recently mobilized colistin resistance (mcr-1) associated colistin resistance among Escherichia coli isolates have been attributed to the overuse of antimicrobials in livestock production. E. coli remains an important pathogen, often associated with mortality and low carcass weight in poultry medicine; therefore, the need to use antimicrobials is common. The study aimed to determine the AMR profile and presence of mcr-1 and mcr-2 genes in avian pathogenic E. coli from poultry samples tested at a bacteriology laboratory for routine diagnosis. This is a first step in understanding the effectiveness of mitigation strategies. Materials and Methods: Fifty E. coli strains were assessed for resistance against ten antimicrobial drugs using broth microdilution. All isolates with a colistin minimum inhibitory concentration (MIC) of 2 μg/mL were analyzed for the presence of mcr-1 and mcr-2 genes by employing the polymerase chain reaction. For each isolate, the following farm information was obtained: farm location, type of farm, and on-farm use of colistin. Results: Sixty-eight percent of the strains were resistant to at least one antimicrobial; 44% were multiple drug-resistant (MDR). Most E. coli isolates were resistant to doxycycline (44%), trimethoprim-sulfamethoxazole (38%), ampicillin (32%), and enrofloxacin (32%). None of the E. coli strains was resistant to colistin sulfate (MIC90 of 2 μg/mL). Only one E. coli isolate held the mcr-1 gene; none carried the mcr-2 gene. Conclusion: Resistance among E. coli isolates in this study was fairly high. Resistance to commonly used antimicrobials was observed, such as doxycycline, trimethoprim-sulfamethoxazole, and enrofloxacin. Only a single E. coli strain carried the mcr-1 gene, suggesting that mcr-1 and mcr-2 genes are common among isolates in this study. The prevalence of AMR, however, suggests that farmers must implement standard biosecurity measures to reduce E. coli burden, and antimicrobial use to prolong the efficacy life span of some of these drugs.

scholarly journals Presence of the Extended-Spectrum-β-Lactamase and Plasmid-Mediated AmpC-Encoding Genes in Escherichia coli from Companion Animals—A Study from a University-Based Veterinary Hospital in Taipei, Taiwan

Antibiotics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1536
Author(s):  
Fang-Ling Liu ◽  
Nan-Ling Kuan ◽  
Kuang-Sheng Yeh
Keyword(s):  
Escherichia Coli ◽  
Companion Animals ◽  
Third Generation ◽  
E Coli ◽  
Extended Spectrum ◽  
Encoding Genes ◽  
Veterinary Hospital ◽  
Third Generation Cephalosporins ◽  
Sequence Types ◽  
Highly Virulent

Extended-spectrum-β-lactamase (ESBL) and AmpC β-lactamase are two enzymes commonly found in Enterobacteriaceae that confer resistance to major antibiotics, such as third-generation cephalosporins that are widely prescribed for both human and animals. We screened for Escherichia coli producing ESBL and plasmid-mediated AmpC β-lactamase (pAmpC) from dogs and cats brought to National Taiwan University Veterinary Hospital, Taipei, Taiwan from 29 June 2020, to 31 December 2020. The genotypes and phylogenetic relatedness of these E. coli were also analyzed. Fifty samples of E. coli obtained from 249 bacterial isolates were included in this study. Among them, eight isolates had ESBL, seven had pAmpC, and one had both. Thirty-two percent (16/50) of E. coli isolates were resistant to third-generation cephalosporins. The detected ESBL genes included the blaCTX-M-1 and blaCTX-M-9 groups, and the blaCMY-2 group was the only gene type found in pAmpC. ESBL-producing E. coli belonged to the pathogenic phylogroup B2, and the sequence types (STs) were ST131 and ST1193. Three isolates were determined to be ST131-O25b, a highly virulent epidemic clone. The pAmpC-producing E. coli were distributed in multiple phylogroups, primarily the commensal phylogroup B1. The STs of the pAmpC-producing E. coli included ST155, ST315, ST617, ST457, ST767, ST372, and ST93; all of these have been reported in humans and animals. Imipenem was active against all the ESBL/pAmpC-producing E. coli; however, since in humans it is a last-resort antimicrobial, its use in companion animals should be restricted.

scholarly journals Molecular Characterization of Extended-Spectrum-β-Lactamase-Producing and Plasmid-Mediated AmpC β-Lactamase-Producing Escherichia coli Isolated from Stray Dogs in South Korea

2012 ◽  
Vol 56 (5) ◽  
pp. 2705-2712 ◽  
Author(s):  
Migma Dorji Tamang ◽  
Hyang-Mi Nam ◽  
Geum-Chan Jang ◽  
Su-Ran Kim ◽  
Myung Hwa Chae ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Companion Animals ◽  
Republic Of Korea ◽  
Stray Dogs ◽  
Content Type ◽  
First Report ◽  
E Coli ◽  
Extended Spectrum ◽  
The Republic ◽  
Clonal Spread

ABSTRACTA total of 47 extended-spectrum-cephalosporin-resistantEscherichia colistrains isolated from stray dogs in 2006 and 2007 in the Republic of Korea were investigated using molecular methods. Extended-spectrum β-lactamase (ESBL) and AmpC β-lactamase phenotypes were identified in 12 and 23E. coliisolates, respectively. All 12 ESBL-producing isolates carriedblaCTX-Mgenes. The most common CTX-M types were CTX-M-14 (n= 5) and CTX-M-24 (n= 3). Isolates producing CTX-M-3, CTX-M-55, CTX-M-27, and CTX-M-65 were also identified. Twenty-one of 23 AmpC β-lactamase-producing isolates were found to carryblaCMY-2genes. TEM-1 was associated with CTX-M and CMY-2 β-lactamases in 4 and 15 isolates, respectively. In addition toblaTEM-1, two isolates carriedblaDHA-1, and one of them cocarriedblaCMY-2. Both CTX-M and CMY-2 genes were located on large (40 to 170 kb) conjugative plasmids that contained the insertion sequence ISEcp1upstream of theblagenes. Only in the case of CTX-M genes was there an IS903sequence downstream of the gene. The spread of ESBLs and AmpC β-lactamases occurred via both horizontal gene transfer, accounting for much of the CTX-M gene dissemination, and clonal spread, accounting for CMY-2 gene dissemination. The horizontal dissemination ofblaCTX-MandblaCMY-2genes was mediated by IncF and IncI1-Iγ plasmids, respectively. The clonal spread ofblaCMY-2was driven mainly byE. colistrains of virulent phylogroup D lineage ST648. To our knowledge, this is the first report ofblaDHA-1inE. colistrains isolated from companion animals. This study also represents the first report of CMY-2 β-lactamase-producingE. coliisolates from dogs in the Republic of Korea.

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