Characterisation of AmpC Hyper-Producing Escherichia coli from Humans and Dairy Farms Collected in Parallel in the Same Geographical Region
Characterisation of AmpC Hyper-Producing Escherichia coli from Humans and Dairy Farms Collected in Parallel in the Same Geographical Region
复制标题
从同一地理区域平行收集的人类和奶牛场中 AmpC 高产大肠杆菌的特征
DOI:
10.1101/784694
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Alzayn M
中科院分区:
文献类型:
--
作者:
Alzayn M
ObjectivesTo characterize putative AmpC-hyperproducing third-generation cephalosporin-resistantE. colifrom dairy farms and their phylogenetic relationships; to identify risk factors for their presence; and to assess evidence for their zoonotic transmission into the local human population.MethodsProteomics was used to explain differences in antimicrobial susceptibility. WGS allowed phylogenetic analysis. Multilevel, multivariable logistic regression modelling was used to identify risk factors.ResultsIncreased use of amoxicillin/clavulanate was associated with an increased risk of finding AmpC hyperproducers on farms. Expansion of cephalosporin resistance in AmpC hyperproducers was seen in farm isolates withmarRmutations (conferring cefoperazone resistance) or when AmpC was mutated (conferring fourth-generation cephalosporin and cefoperazone resistance). Phylogenetic analysis confirmed the dominance of ST88 amongst farm AmpC hyperproducers but there was no evidence for acquisition of farm isolates by members of the local human population.ConclusionsClear evidence was found for recent farm-to-farm transmission of AmpC-hyperproducingE. coliand of adaptive mutations to expand resistance. Whilst there was no evidence of isolates entering the local human population, efforts to reduce third-generation cephalosporin resistance on dairy farms must address the high prevalence of AmpC hyperproducers. The finding that amoxicillin/clavulanate use was associated with an increased risk of finding AmpC hyperproducers is important because this is not currently categorized as a highest-priority critically important antimicrobial and so is not currently targeted for specific usage restrictions in the UK.
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影响因子:
4.9
作者:
Ismah, Wan Ahmad Kamil Wan Nur;Takebayashi, Yuiko;Avison, Matthew B.
通讯作者:
Avison, Matthew B.
影响因子:
3.9
作者:
Argimón S;Abudahab K;Goater RJE;Fedosejev A;Bhai J;Glasner C;Feil EJ;Holden MTG;Yeats CA;Grundmann H;Spratt BG;Aanensen DM
通讯作者:
Aanensen DM
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
TorresEva;López;Rodríguez;PascualÁlvaro
通讯作者:
PascualÁlvaro
影响因子:
5.2
作者:
A. Guillouzouic;N. Caroff;S. Dauvergne;D. Lepelletier;A. Perrin Guyomard;I. Kempf;A. Reynaud;S. Corvec
通讯作者:
S. Corvec
DOI:
--
发表时间:
2019
期刊:
bioRxiv
影响因子:
--
作者:
Hannah Schubert;J. Findlay;Katy Morley;E. Puddy;Robert E. Arbon;V. Gould;O. Mounsey;Madeleine H. R. Evans;G. Rees;D. Barrett;K. Turner;T. Cogan;M. Avison;K. Reyher
通讯作者:
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