Proteomics

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Peptide signature for the fast detection of bacterial species in Urinary Tract infections using LC-MS


ABSTRACT: The fast identification of microbial species in clinical samples is essential to provide an appropriated antiobiotherapy to the patient and to reduce the prescription of broad spectrum antimicrobials leading to antibioresistances. We have developed a new strategy for the fast identification of bacterial species in urine using a specific peptide signature designed by combination of proteomics data and machine learning approaches. Thereby, we have developed a 82 peptides signature which, we monitored by targeted proteomics, is able to distinguish between the 15 species the most frequently found in Urinary Tract Infections (UTIs). Our method allows the bacterial identification in less than 4 hours without culturing.

ORGANISM(S): Streptococcus Agalactiae 2603v/r Enterococcus Faecalis V583 Klebsiella Pneumoniae Subsp. Pneumoniae Mgh 78578 Escherichia Coli K-12

SUBMITTER: Clarisse Gotti  

PROVIDER: PXD014970 | panorama | Wed Oct 09 00:00:00 BST 2019

REPOSITORIES: PanoramaPublic

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Publications

Fast and Accurate Bacterial Species Identification in Urine Specimens Using LC-MS/MS Mass Spectrometry and Machine Learning.

Roux-Dalvai Florence F   Gotti Clarisse C   Leclercq Mickaël M   Hélie Marie-Claude MC   Boissinot Maurice M   Arrey Tabiwang N TN   Dauly Claire C   Fournier Frédéric F   Kelly Isabelle I   Marcoux Judith J   Bestman-Smith Julie J   Bergeron Michel G MG   Droit Arnaud A  

Molecular & cellular proteomics : MCP 20191004 12


Fast identification of microbial species in clinical samples is essential to provide an appropriate antibiotherapy to the patient and reduce the prescription of broad-spectrum antimicrobials leading to antibioresistances. MALDI-TOF-MS technology has become a tool of choice for microbial identification but has several drawbacks: it requires a long step of bacterial culture before analysis (≥24 h), has a low specificity and is not quantitative. We developed a new strategy for identifying bacterial  ...[more]

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