Abstract
The purpose of this study is to analyze the current knowledge about matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) identification of clinical yeasts comparing with the ribosomal DNA sequencing identification. We also review the lasts taxonomical and nomenclature changes of clinical yeasts. In most studies, the two main commercially available, MALDI Biotyper and VITEK MS, correctly identified more than 90% of yeasts isolates. Most drawbacks are due to low discrimination between closely related species or due to a lack of the reference main spectra (MSP) in the database. The addition of MSPs in the databases improves the performance. MALDI-TOF MS has proven to be good for the identification of clinical yeasts and to differentiate some closely related species or species undifferentiated by conventional techniques. However, some species remain difficult to differentiate by this technique and should be identified by ribosomal DNA sequencing. Accurate and rapid yeasts identification could improve the management of patients with yeasts infections.
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