Escherichia coli as Commensal and Pathogenic Bacteria Among Food-Producing Animals: Health Implications of Extended Spectrum β-lactamase (ESBL) Production.
Sónia Ramos,Vanessa Silva,Maria de Lurdes Enes Dapkevicius,Manuela Caniça,María Teresa Tejedor-Junco,Gilberto Igrejas,Patrícia Poeta +6 more
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TLDR
The prevalence of antimicrobial resistance in these commensal bacteria (or others, such as enterococci) can be a good indicator for the selective pressure caused by the use of antimacterial agents, providing an early warning of the emergence of antim antibiotic resistance in pathogens.Abstract:
Escherichia coli are facultative, anaerobic Gram-negative rods with many facets. Within resistant bacterial populations, they play an important ecological role and can be used as a bioindicator of antimicrobial resistance. All animal species used for food production, as well as humans, carry E. coli in their intestinal tracts; plus, the genetic flexibility and adaptability of this bacteria to constantly changing environments allows it to acquire a great number of antimicrobial resistance mechanisms. Thus, the prevalence of antimicrobial resistance in these commensal bacteria (or others, such as enterococci) can be a good indicator for the selective pressure caused by the use of antimicrobial agents, providing an early warning of the emergence of antimicrobial resistance in pathogens. As many as 90% of E. coli strains are commensals inhabiting the intestinal tracts of humans and warm-blooded animals. As a commensal, it lives in a mutually beneficial association with its hosts and rarely causes diseases. However, E. coli also remains as one of the most frequent causes of several common bacterial infections in humans and animals. In humans, it is the prominent cause of enteritis, community- and hospital-acquired urinary tract infection (UTI), septicemia, postsurgical peritonitis, and other clinical infections, such as neonatal meningitis, while, in farm animals, it is more prominently associated with diarrhea. On a global scale, E. coli can be considered the most important human pathogen, causing severe infection along with other major bacterial foodborne agents, such as Salmonella spp. and Campylobacter. Thus, the importance of resistance in E. coli, typically considered a benign commensal, should not be underestimated.read more
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An overview on mastitis-associated Escherichia coli: Pathogenicity, host immunity and the use of alternative therapies
TL;DR: In this paper , the authors highlight the pathogenicity of E. coli in the mammary gland, discuss the presence of the new putative pathotype, mammary pathogenic E coli (MPEC), and study the host's immune response, and the alternative treatments that are used against mastitis-associated E coli.
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Prevalence and characterisation of antimicrobial resistance genes and class 1 and 2 integrons in multiresistant Escherichia coli isolated from poultry production
Przemysław Racewicz,Michał Majewski,Hannah Biesiada,Sebastian Nowaczewski,Jarosław Wilczyński,Danuta Wystalska,M Kubiak,Marcin Pszczola,Zofia E. Madeja +8 more
TL;DR: In this article , the authors focused on the assessment of resistance determinants in relation to phenotypic resistance of the 74 commensal E. coli isolates present in different ecological environments.
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Genomic Analysis of ESBL-Producing E. coli in Wildlife from North-Eastern Germany
Timo Homeier-Bachmann,A.-K. Schütz,Sylvia Dreyer,Julien Glanz,Katharina Schaufler,Franz Josef Conraths +5 more
TL;DR: In this article , an estimated prevalence of 1.2% ESBL-producing E. coli in wild boar and 1.1% in wild ruminants was found, probably due to the secluded location of the search area.
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Multiresistant Bacteria Isolated from Intestinal Faeces of Farm Animals in Austria.
Herbert Galler,Josefa Luxner,Christian Petternel,Franz F. Reinthaler,Juliana Habib,Doris Haas,Clemens Kittinger,Peter Pless,Gebhard Feierl,Gernot Zarfel +9 more
TL;DR: In this paper, faeces samples were taken directly from the intestines of swine and broiler during the slaughter process, and analyzed for the presence of ESBL-producing Enterobacteriaceae, MRSA, MRCoNS and VRE.
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Occurrence, Antimicrobial Resistance Profile, and Characterization of Extended-Spectrum β-Lactamase–Producing <i>Escherichia coli</i> Isolates from Minced Meat at Local Markets in Thailand
TL;DR: In this article , the authors examined the occurrence, antimicrobial susceptibility, and molecular genetic features of ESBL-producing E. coli isolates from three commonly consumed minced meat varieties, namely pork, chicken, and beef.
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