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dc.contributor.authorCouce, Alejandro-
dc.contributor.authorAlonso-Rodríguez, N.-
dc.contributor.authorCostas, Coloma-
dc.contributor.authorOliver, Antonio-
dc.contributor.authorBlázquez Gómez, Jesús-
dc.date.accessioned2020-02-10T07:55:39Z-
dc.date.available2020-02-10T07:55:39Z-
dc.date.issued2016-06-
dc.identifierdoi: 10.1016/j.cmi.2016.03.008-
dc.identifiere-issn: 1469-0691-
dc.identifierissn: 1198-743X-
dc.identifier.citationClinical Microbiology and Infection 22(6): 566.e1-566.e7 (2016)-
dc.identifier.urihttp://hdl.handle.net/10261/200044-
dc.description.abstractBacteria with elevated mutation rates represent a risk factor for treatment failure and are often found with high frequency in clinical isolates from different sources. How this frequency reflects the among-population and within-population proportion of hypermutators is unknown, despite its importance to the choice of antibiotic therapies that minimize the likelihood of resistance development. Here we screened for hypermutators among the urine of 80 patients with urinary tract infections, at an unprecedented resolution of 24 isolates per sample. We found hypermutators in four patients (5%), at frequencies ranging from 4.2% to 62.5%. Molecular characterization revealed alterations in the oxidized guanine (GO) and methly-directed mistmatch repair (MMR) systems as the genetic basis of hypermutability. These observations suggest that mutators may be present in more patients than previously anticipated, at frequencies that are difficult to detect but still sufficient to impact on adaptation to antibiotics or the host environment.-
dc.description.sponsorshipThis work was supported by grants FIS PI13/00063 and REIPI RD12/0015 to JB from Instituto de Salud Carlos III (www.isciii.es), Plan Nacional de I+D+i, Ministerio de Economía y Competitividad, Spanish Network for Research in Infectious Diseases and co-financed by European Development Regional Fund A way to achieve Europe ERDF.-
dc.languageeng-
dc.publisherElsevier-
dc.rightsclosedAccess-
dc.subjectAntibiotic resistance-
dc.subjectHypermutability-
dc.subjectMutator-
dc.subjectmutL-
dc.subjectmutY-
dc.titleIntrapopulation variability in mutator prevalence among urinary tract infection isolates of Escherichia coli-
dc.typeartículo-
dc.identifier.doihttp://dx.doi.org/10.1016/j.cmi.2016.03.008-
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.cmi.2016.03.008-
dc.date.updated2020-02-10T07:55:40Z-
dc.contributor.funderInstituto de Salud Carlos III-
dc.contributor.funderRed Española de Investigación en Patología Infecciosa-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderEuropean Commission-
dc.relation.csic-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100004587es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
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