Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Microbiology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300753 |
Resumo: | Quinolones and fluoroquinolones are widely used to treat uropathogenic Escherichia coli infections. Bacterial resistance to these antimicrobials primarily involves mutations in gyrA and parC genes. To date, no studies have examined the potential relationship between biochemical characteristics and quinolone resistance in uropathogenic E. coli strains. The present work analyzed the quinolone sensitivity and biochemical activities of fifty-eight lactose-negative uropathogenic E. coli strains. A high percentage of the isolates (48.3%) was found to be resistant to at least one of the tested quinolones, and DNA sequencing revealed quinolone resistant determining region gyrA and parC mutations in the multi-resistant isolates. Statistical analyses suggested that the lack of ornithine decarboxylase (ODC) activity is correlated with quinolone resistance. Despite the low number of isolates examined, this is the first study correlating these characteristics in lactose-negative E. coli isolates. |
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Brazilian Journal of Microbiology |
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Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coliODCgyrAparCuropathogenicQuinolones and fluoroquinolones are widely used to treat uropathogenic Escherichia coli infections. Bacterial resistance to these antimicrobials primarily involves mutations in gyrA and parC genes. To date, no studies have examined the potential relationship between biochemical characteristics and quinolone resistance in uropathogenic E. coli strains. The present work analyzed the quinolone sensitivity and biochemical activities of fifty-eight lactose-negative uropathogenic E. coli strains. A high percentage of the isolates (48.3%) was found to be resistant to at least one of the tested quinolones, and DNA sequencing revealed quinolone resistant determining region gyrA and parC mutations in the multi-resistant isolates. Statistical analyses suggested that the lack of ornithine decarboxylase (ODC) activity is correlated with quinolone resistance. Despite the low number of isolates examined, this is the first study correlating these characteristics in lactose-negative E. coli isolates.Sociedade Brasileira de Microbiologia2015-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300753Brazilian Journal of Microbiology v.46 n.3 2015reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S1517-838246320131291info:eu-repo/semantics/openAccessGomig,FrancianeGalvão,Carolina WeigertFreitas,Denis Leandro deLabas,LarissaEtto,Rafael MazerEsmerino,Luiz AntonioLima,Marcelo Andrade deAppel,Marcia HelenaZanata,Silvio MarquesSteffens,Maria Berenice ReynaudNader,Helena BoncianiSilveira,Rafael Bertoni daeng2015-08-31T00:00:00Zoai:scielo:S1517-83822015000300753Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2015-08-31T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false |
dc.title.none.fl_str_mv |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli |
title |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli |
spellingShingle |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli Gomig,Franciane ODC gyrA parC uropathogenic |
title_short |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli |
title_full |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli |
title_fullStr |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli |
title_full_unstemmed |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli |
title_sort |
Quinolone resistance and ornithine decarboxylation activity in lactose-negative Escherichia coli |
author |
Gomig,Franciane |
author_facet |
Gomig,Franciane Galvão,Carolina Weigert Freitas,Denis Leandro de Labas,Larissa Etto,Rafael Mazer Esmerino,Luiz Antonio Lima,Marcelo Andrade de Appel,Marcia Helena Zanata,Silvio Marques Steffens,Maria Berenice Reynaud Nader,Helena Bonciani Silveira,Rafael Bertoni da |
author_role |
author |
author2 |
Galvão,Carolina Weigert Freitas,Denis Leandro de Labas,Larissa Etto,Rafael Mazer Esmerino,Luiz Antonio Lima,Marcelo Andrade de Appel,Marcia Helena Zanata,Silvio Marques Steffens,Maria Berenice Reynaud Nader,Helena Bonciani Silveira,Rafael Bertoni da |
author2_role |
author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Gomig,Franciane Galvão,Carolina Weigert Freitas,Denis Leandro de Labas,Larissa Etto,Rafael Mazer Esmerino,Luiz Antonio Lima,Marcelo Andrade de Appel,Marcia Helena Zanata,Silvio Marques Steffens,Maria Berenice Reynaud Nader,Helena Bonciani Silveira,Rafael Bertoni da |
dc.subject.por.fl_str_mv |
ODC gyrA parC uropathogenic |
topic |
ODC gyrA parC uropathogenic |
description |
Quinolones and fluoroquinolones are widely used to treat uropathogenic Escherichia coli infections. Bacterial resistance to these antimicrobials primarily involves mutations in gyrA and parC genes. To date, no studies have examined the potential relationship between biochemical characteristics and quinolone resistance in uropathogenic E. coli strains. The present work analyzed the quinolone sensitivity and biochemical activities of fifty-eight lactose-negative uropathogenic E. coli strains. A high percentage of the isolates (48.3%) was found to be resistant to at least one of the tested quinolones, and DNA sequencing revealed quinolone resistant determining region gyrA and parC mutations in the multi-resistant isolates. Statistical analyses suggested that the lack of ornithine decarboxylase (ODC) activity is correlated with quinolone resistance. Despite the low number of isolates examined, this is the first study correlating these characteristics in lactose-negative E. coli isolates. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-01 |
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=S1517-83822015000300753 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300753 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1517-838246320131291 |
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 |
Sociedade Brasileira de Microbiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Microbiologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Microbiology v.46 n.3 2015 reponame:Brazilian Journal of Microbiology instname:Sociedade Brasileira de Microbiologia (SBM) instacron:SBM |
instname_str |
Sociedade Brasileira de Microbiologia (SBM) |
instacron_str |
SBM |
institution |
SBM |
reponame_str |
Brazilian Journal of Microbiology |
collection |
Brazilian Journal of Microbiology |
repository.name.fl_str_mv |
Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM) |
repository.mail.fl_str_mv |
bjm@sbmicrobiologia.org.br||mbmartin@usp.br |
_version_ |
1752122207928057856 |