Matrix-assisted laser desorption ionisation-time of flight mass spectrometry for rapid identification of Laribacter hongkongensis.

Abstract:

:Laribacter hongkongensis is a Gram-negative, facultative anaerobic, motile, S-shaped, urease-positive bacillus associated with invasive infections in liver cirrhosis patients and community-acquired gastroenteritis. Most cases of L hongkongensis infections occur in eastern countries. Information is lacking on the usefulness of matrix-assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI-TOF MS) for the identification of bacteria important in eastern countries. Using the Bruker database extended with 21 L hongkongensis reference strains, all 240 L hongkongensis isolates recovered from patients, fish, frogs and water were correctly identified, with 224 (93.3%) strains having top match scores ≥2.0. Notably, the strain of Chromobacterium violaceum was not reliably identified although it is included in the database. MALDI-TOF MS is useful for the accurate routine identification of L hongkongensis after adding reference L hongkongensis main spectra to the database. The number of strains for each species in MALDI-TOF MS databases should be expanded to cover intraspecies variability.

journal_name

J Clin Pathol

authors

Tang BS,Lau SK,Teng JL,Chan TM,Chan WS,Wong TY,Tong YT,Fan RY,Yuen KY,Woo PC

doi

10.1136/jclinpath-2013-201651

subject

Has Abstract

pub_date

2013-12-01 00:00:00

pages

1081-3

issue

12

eissn

0021-9746

issn

1472-4146

pii

jclinpath-2013-201651

journal_volume

66

pub_type

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