Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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=S1517-83822014000100034 |
Resumo: | To evaluate the molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis (MH) clinical strains isolated from urogenital specimens. 15 MH clinical isolates with different phenotypes of resistance to fluoroquinolones antibiotics were screened for mutations in the quinolone resistance-determining regions (QRDRs) of DNA gyrase (gyrA and gyrB) and topoisomerase IV (parC and parE) in comparison with the reference strain PG21, which is susceptible to fluoroquinolones antibiotics. 15 MH isolates with three kinds of quinolone resistance phenotypes were obtained. Thirteen out of these quinolone-resistant isolates were found to carry nucleotide substitutions in either gyrA or parC. There were no alterations in gyrB and no mutations were found in the isolates with a phenotype of resistance to Ofloxacin (OFX), intermediate resistant to Levofloxacin (LVX) and Sparfloxacin (SFX), and those susceptible to all three tested antibiotics. The molecular mechanism of fluoroquinolone resistance in clinical isolates of MH was reported in this study. The single amino acid mutation in ParC of MH may relate to the resistance to OFX and LVX and the high-level resistance to fluoroquinolones for MH is likely associated with mutations in both DNA gyrase and the ParC subunit of topoisomerase IV. |
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Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolatesMycoplasma hominisquinolonesdrug resistancemutationTo evaluate the molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis (MH) clinical strains isolated from urogenital specimens. 15 MH clinical isolates with different phenotypes of resistance to fluoroquinolones antibiotics were screened for mutations in the quinolone resistance-determining regions (QRDRs) of DNA gyrase (gyrA and gyrB) and topoisomerase IV (parC and parE) in comparison with the reference strain PG21, which is susceptible to fluoroquinolones antibiotics. 15 MH isolates with three kinds of quinolone resistance phenotypes were obtained. Thirteen out of these quinolone-resistant isolates were found to carry nucleotide substitutions in either gyrA or parC. There were no alterations in gyrB and no mutations were found in the isolates with a phenotype of resistance to Ofloxacin (OFX), intermediate resistant to Levofloxacin (LVX) and Sparfloxacin (SFX), and those susceptible to all three tested antibiotics. The molecular mechanism of fluoroquinolone resistance in clinical isolates of MH was reported in this study. The single amino acid mutation in ParC of MH may relate to the resistance to OFX and LVX and the high-level resistance to fluoroquinolones for MH is likely associated with mutations in both DNA gyrase and the ParC subunit of topoisomerase IV.Sociedade Brasileira de Microbiologia2014-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100034Brazilian Journal of Microbiology v.45 n.1 2014reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S1517-83822014000100034info:eu-repo/semantics/openAccessDong-Ya,MengChang-Jian,SunJing-Bo,YuJun,MaWen-Cheng,Xueeng2014-05-29T00:00:00Zoai:scielo:S1517-83822014000100034Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2014-05-29T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false |
dc.title.none.fl_str_mv |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates |
title |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates |
spellingShingle |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates Dong-Ya,Meng Mycoplasma hominis quinolones drug resistance mutation |
title_short |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates |
title_full |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates |
title_fullStr |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates |
title_full_unstemmed |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates |
title_sort |
Molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis clinical isolates |
author |
Dong-Ya,Meng |
author_facet |
Dong-Ya,Meng Chang-Jian,Sun Jing-Bo,Yu Jun,Ma Wen-Cheng,Xue |
author_role |
author |
author2 |
Chang-Jian,Sun Jing-Bo,Yu Jun,Ma Wen-Cheng,Xue |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Dong-Ya,Meng Chang-Jian,Sun Jing-Bo,Yu Jun,Ma Wen-Cheng,Xue |
dc.subject.por.fl_str_mv |
Mycoplasma hominis quinolones drug resistance mutation |
topic |
Mycoplasma hominis quinolones drug resistance mutation |
description |
To evaluate the molecular mechanism of fluoroquinolones resistance in Mycoplasma hominis (MH) clinical strains isolated from urogenital specimens. 15 MH clinical isolates with different phenotypes of resistance to fluoroquinolones antibiotics were screened for mutations in the quinolone resistance-determining regions (QRDRs) of DNA gyrase (gyrA and gyrB) and topoisomerase IV (parC and parE) in comparison with the reference strain PG21, which is susceptible to fluoroquinolones antibiotics. 15 MH isolates with three kinds of quinolone resistance phenotypes were obtained. Thirteen out of these quinolone-resistant isolates were found to carry nucleotide substitutions in either gyrA or parC. There were no alterations in gyrB and no mutations were found in the isolates with a phenotype of resistance to Ofloxacin (OFX), intermediate resistant to Levofloxacin (LVX) and Sparfloxacin (SFX), and those susceptible to all three tested antibiotics. The molecular mechanism of fluoroquinolone resistance in clinical isolates of MH was reported in this study. The single amino acid mutation in ParC of MH may relate to the resistance to OFX and LVX and the high-level resistance to fluoroquinolones for MH is likely associated with mutations in both DNA gyrase and the ParC subunit of topoisomerase IV. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-01-01 |
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=S1517-83822014000100034 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100034 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1517-83822014000100034 |
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.45 n.1 2014 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_ |
1752122206164353024 |