Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701249 |
Resumo: | The study aimed to evaluate the antimicrobial susceptibility of 109 samples of Escherichia coli (E. coli) of environmental origin and to characterize these isolates according to the degree of pathogenicity in vivo, verifying a possible relationship between this variable and susceptibility to the active principles tested. The isolates were subjected to disc diffusion test to 14 antibiotics. From 16.5% to 90% of the samples were sensitive; 1 - 28.5% showed intermediate degree of susceptibility and between 9 to 78% of E. coli analyzed were resistant. The highest resistance percentages were seen in the class of quinolones and tetracyclines (>75%), and for sensitivity in the class of amphenicols (68.8%). By inoculating 1- day - old chicks, the isolates were classified as highly pathogenic (2.7%), intermediate (10.1%), low (42.2%) and apathogenic (45%). It was observed a wide variation in the susceptibility profile of isolates in relation to antimicrobials. It was also found that most of the samples had pathogenic potential (55%), thus being considered as APEC (avian pathogenic E. coli). No relationship between pathogenicity and antimicrobial susceptibility (P≤0.05) was observed. |
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Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental originEscherichia coliresistanceantimicrobialspathogenicitypoultry.The study aimed to evaluate the antimicrobial susceptibility of 109 samples of Escherichia coli (E. coli) of environmental origin and to characterize these isolates according to the degree of pathogenicity in vivo, verifying a possible relationship between this variable and susceptibility to the active principles tested. The isolates were subjected to disc diffusion test to 14 antibiotics. From 16.5% to 90% of the samples were sensitive; 1 - 28.5% showed intermediate degree of susceptibility and between 9 to 78% of E. coli analyzed were resistant. The highest resistance percentages were seen in the class of quinolones and tetracyclines (>75%), and for sensitivity in the class of amphenicols (68.8%). By inoculating 1- day - old chicks, the isolates were classified as highly pathogenic (2.7%), intermediate (10.1%), low (42.2%) and apathogenic (45%). It was observed a wide variation in the susceptibility profile of isolates in relation to antimicrobials. It was also found that most of the samples had pathogenic potential (55%), thus being considered as APEC (avian pathogenic E. coli). No relationship between pathogenicity and antimicrobial susceptibility (P≤0.05) was observed.Universidade Federal de Santa Maria2015-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701249Ciência Rural v.45 n.7 2015reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20141020info:eu-repo/semantics/openAccessCarvalho,DaianeFinkler,FabrineGrassotti,Tiela TrappKunert Filho,Hiran CastagninoLima,Francisco Esmaile de SalesSoares,Beatriz DugaichRossato,Juliana MarzariCunha,Augusto César daBrito,Kelly Cristina Tagliari deBrito,Benito Guimarães deeng2015-07-15T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin |
title |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin |
spellingShingle |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin Carvalho,Daiane Escherichia coli resistance antimicrobials pathogenicity poultry. |
title_short |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin |
title_full |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin |
title_fullStr |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin |
title_full_unstemmed |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin |
title_sort |
Antimicrobial susceptibility and pathogenicity of Escherichia coli strains of environmental origin |
author |
Carvalho,Daiane |
author_facet |
Carvalho,Daiane Finkler,Fabrine Grassotti,Tiela Trapp Kunert Filho,Hiran Castagnino Lima,Francisco Esmaile de Sales Soares,Beatriz Dugaich Rossato,Juliana Marzari Cunha,Augusto César da Brito,Kelly Cristina Tagliari de Brito,Benito Guimarães de |
author_role |
author |
author2 |
Finkler,Fabrine Grassotti,Tiela Trapp Kunert Filho,Hiran Castagnino Lima,Francisco Esmaile de Sales Soares,Beatriz Dugaich Rossato,Juliana Marzari Cunha,Augusto César da Brito,Kelly Cristina Tagliari de Brito,Benito Guimarães de |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Carvalho,Daiane Finkler,Fabrine Grassotti,Tiela Trapp Kunert Filho,Hiran Castagnino Lima,Francisco Esmaile de Sales Soares,Beatriz Dugaich Rossato,Juliana Marzari Cunha,Augusto César da Brito,Kelly Cristina Tagliari de Brito,Benito Guimarães de |
dc.subject.por.fl_str_mv |
Escherichia coli resistance antimicrobials pathogenicity poultry. |
topic |
Escherichia coli resistance antimicrobials pathogenicity poultry. |
description |
The study aimed to evaluate the antimicrobial susceptibility of 109 samples of Escherichia coli (E. coli) of environmental origin and to characterize these isolates according to the degree of pathogenicity in vivo, verifying a possible relationship between this variable and susceptibility to the active principles tested. The isolates were subjected to disc diffusion test to 14 antibiotics. From 16.5% to 90% of the samples were sensitive; 1 - 28.5% showed intermediate degree of susceptibility and between 9 to 78% of E. coli analyzed were resistant. The highest resistance percentages were seen in the class of quinolones and tetracyclines (>75%), and for sensitivity in the class of amphenicols (68.8%). By inoculating 1- day - old chicks, the isolates were classified as highly pathogenic (2.7%), intermediate (10.1%), low (42.2%) and apathogenic (45%). It was observed a wide variation in the susceptibility profile of isolates in relation to antimicrobials. It was also found that most of the samples had pathogenic potential (55%), thus being considered as APEC (avian pathogenic E. coli). No relationship between pathogenicity and antimicrobial susceptibility (P≤0.05) was observed. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-07-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701249 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000701249 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20141020 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Rural v.45 n.7 2015 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140548175790080 |