Valérie Monnin

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MOTIVATION Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry has been broadly adopted by routine clinical microbiology laboratories for bacterial species identification. An isolated colony of the targeted microorganism is the single prerequisite. Currently, MS-based microbial identification directly from clinical specimens can not(More)
The objective of this research was to extend the Vitek MS fungal knowledge base version 2.0.0 to allow the robust identification of clinically relevant dermatophytes, using a variety of strains, incubation times, and growth conditions. First, we established a quick and reliable method for sample preparation to obtain a reliable and reproducible(More)
We describe a simple protocol to inactivate the biosafety level 3 (BSL3) pathogens Brucella prior to their analysis by matrix-assisted laser desorption ionization-time of flight mass spectrometry. This method is also effective for several other bacterial pathogens and allows storage, and eventually shipping, of inactivated samples; therefore, it might be(More)
Laboratory of Applied Microbiology, University of Applied Sciences and Arts of Southern 12 Switzerland, Bellinzona, Switzerland; bioMérieux SA, Unit Microbiology, R&D 13 Microbiology, La Balme Les Grottes, France; Department of Dermatology, University 14 Hospital of Zurich, Zurich, Switzerland; Microbiology and Virology Unit, Papa Giovanni 15 XXIII(More)
Laboratory of Applied Microbiology, University of Applied Sciences and Arts of Southern 12 Switzerland, Bellinzona, Switzerland; bioMérieux SA, Unit Microbiology, R&D 13 Microbiology, La Balme Les Grottes, France; Department of Dermatology, University 14 Hospital of Zurich, Zurich, Switzerland; Microbiology and Virology Unit, Papa Giovanni 15 XXIII(More)
In 2005, a new sibling species of Aspergillus fumigatus was discovered: Aspergillus lentulus. Both species can cause invasive fungal disease in immune-compromised patients. The species are morphologically very similar. Current techniques for identification are PCR-based or morphology-based. These techniques are labour-intense and not sufficiently(More)
We here show adequate species identification for bacterial isolates of the genus Nocardia spp. through VITEK mass spectrometry. Application of a specific sample preparation method in combination with a robust matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) database leads to 94% accurate identification to the(More)
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