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Identification of animal Pasteurellaceae by MALDI-TOF mass spectrometry

Peter Kuhnert1, Magne Bisgaard, Bożena M Korczak

  • 1Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland. peter.kuhnert@vetsuisse.unibe.ch

Journal of Microbiological Methods
|February 21, 2012
PubMed

Insights

Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) offers a rapid and precise method for identifying animal-associated Pasteurellaceae bacteria. This technique provides a promising alternative to traditional, time-consuming diagnostic assays in veterinary laboratories.

Area of Science:

  • Veterinary Microbiology
  • Bacterial Identification
  • Mass Spectrometry Applications

Background:

  • Pasteurellaceae species are significant animal pathogens, necessitating accurate identification in veterinary diagnostics.
  • Current identification methods, primarily phenotypic assays, are often cumbersome and time-consuming.
  • Genetic identification is typically reserved for research or critical diagnostic cases.

Purpose of the Study:

  • To evaluate the diagnostic potential of MALDI-TOF MS for animal-associated Pasteurellaceae.
  • To assess MALDI-TOF MS as an alternative to conventional diagnostic methods in veterinary settings.

Main Methods:

  • Expanded the Bruker Biotyper 3.0 database with reference spectra from animal Pasteurellaceae species.
  • Tested the diagnostic performance using approximately 250 strains from 15 genera and over 40 species/subspecies.
  • Included clinically relevant, commensal, and field isolates for comprehensive evaluation.

Main Results:

  • Achieved high discrimination at both genus and species levels for the majority of Pasteurellaceae tested.
  • Identified minor challenges in differentiating some closely related species and subspecies.
  • Demonstrated MALDI-TOF MS's capability to accurately identify a broad range of animal-associated Pasteurellaceae.

Conclusions:

  • MALDI-TOF MS is a highly effective method for the rapid and precise diagnosis of animal-associated Pasteurellaceae.
  • The technique offers significant advantages in speed, accuracy, and cost-effectiveness for veterinary diagnostics.
  • MALDI-TOF MS represents a valuable advancement over traditional phenotypic identification methods.

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