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A multicentre study investigating parameters which influence direct bacterial identification from urine

dc.contributor.authorZboromyrska, Yuliya
dc.contributor.authorBosch Mestres, Jordi
dc.contributor.authorAramburu, Jesus
dc.contributor.authorCuadros, Juan
dc.contributor.authorGarcía-Riestra, Carlos
dc.contributor.authorLiébana Martos, Carmen
dc.contributor.authorLoza, Elena
dc.contributor.authorMuñoz-Algarra, María
dc.contributor.authorRuiz de Alegría, Carlos
dc.contributor.authorSánchez-Hellín, Victoria
dc.contributor.authorVila, Jordi
dc.date.accessioned2019-02-18T08:53:11Z
dc.date.available2019-02-18T08:53:11Z
dc.date.issued2018
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/10459.1/65746
dc.description.abstractRapid diagnosis is one of the best ways to improve patient management and prognosis as well as to combat the development of bacterial resistance. The aim of this study was to study parameters that impact the achievement of reliable identification using a combination of flow cytometry and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-ToF-MS).The study was carried out in nine hospitals in Spain and included 1,050 urine samples with bacterial counts of 5x106 bacteria/ml. MALDI-ToF-MS-based identification was performed according to a previously described protocol. Valid identification by direct MALDI-ToF-MS was obtained in 72.8% of samples, in 80.3% of samples found to be positive by culture, 32.2% of contaminated samples, and 19.7% of negative samples. Among the positives samples with a valid identification the concordance at the species level was 97.2%. The parameters related to success of direct identification were: high bacterial count, the presence of Escherichia coli as a pathogen and rod-bacteria morphology provided by flow cytometry. The parameters related to failure were a high epithelial cell (EC) count, a high white blood cell (WBC) count and urine samples obtained from in-patients. In summary, this multicentre study confirms previously published data on the usefulness and accuracy of direct MALDI-ToF-MS-based identification of bacteria from urine samples. It seems important to evaluate not only the bacterial count, but also other parameters, such as EC and WBC counts, bacterial species and morphology, and the health care setting, to decide whether the sample is suitable for direct identification.ca_ES
dc.description.sponsorshipSysmex España S.L. financially supported the study, providingreagents and equipment. Additionally, Yuliya Zboromyrska receivedtravel grants from Sysmex España S.L. The funder had no role in data analysis and interpretation, decision to publish, or preparation of the manuscript.ca_ES
dc.language.isoengca_ES
dc.publisherPublic Library of Scienceca_ES
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1371/journal.pone.0207822ca_ES
dc.relation.ispartofPLoS ONE, 2018, vol. 13, núm. 12, e0207822ca_ES
dc.rightscc-by (c) Yuliya Zhoromyrska et al., 2018ca_ES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleA multicentre study investigating parameters which influence direct bacterial identification from urineca_ES
dc.typeinfo:eu-repo/semantics/articleca_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0207822


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cc-by (c) Yuliya Zhoromyrska et al., 2018
Except where otherwise noted, this item's license is described as cc-by (c) Yuliya Zhoromyrska et al., 2018