Identification of Burkholderia pseudomallei by Use of the Vitek Mass Spectrometer.

Abstract:

:Burkholderia pseudomallei is the causative agent of melioidosis. This condition most often presents as pneumonia and bacteremia, with mortality rates of 9% to 70%. Therefore, early identification of this organism may aid in directing appropriate management. This study aimed to use the Vitek matrix-assisted laser desorption ionization-time of flight mass spectrometer to create a spectrum for the rapid identification of B. pseudomallei Spectra from 85 isolate cultures were acquired using the Vitek mass spectrometer research mode. A SuperSpectrum was created using peak matching and subsequently activated for analysis of organism identification. All 85 isolates were correctly identified as B. pseudomallei A total of 899 spectra were analyzed and demonstrated a specificity of 99.8%. Eighty-one clinical isolates were used, of which 10 were neuromelioidosis, and no discernible spectrum difference was appreciated. Spectrum acquisition from a single spot was only successful in 374/899 (41%) of isolates. This increased to 100% when 3 spots of the same extract were analyzed. The Vitek mass spectrometer can be used for the rapid identification of B. pseudomallei with a high level of specificity.

journal_name

J Clin Microbiol

authors

Gassiep I,Armstrong M,Norton RE

doi

10.1128/JCM.00081-19

subject

Has Abstract

pub_date

2019-04-26 00:00:00

issue

5

eissn

0095-1137

issn

1098-660X

pii

JCM.00081-19

journal_volume

57

pub_type

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