Comparative study using phenotypic, genotypic, and proteomics methods for identification of coagulase-negative staphylococci

J Clin Microbiol. 2012 Apr;50(4):1437-9. doi: 10.1128/JCM.06746-11. Epub 2012 Jan 11.

Abstract

Five methods were compared to determine the most accurate method for identification of coagulase-negative staphylococci (CoNS) (n = 142 strains). Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) showed the best results for rapid and accurate CoNS differentiation (99.3% of strains correctly identified). An alternative to this approach could be Vitek2 combined with partial tuf gene sequencing (100% of strains correctly identified when both methods are performed simultaneously).

Publication types

  • Comparative Study

MeSH terms

  • Coagulase / genetics*
  • Genotype
  • Molecular Typing*
  • Phenotype
  • Proteomics
  • RNA, Bacterial / genetics
  • RNA, Ribosomal, 16S / genetics
  • Reference Standards
  • Sequence Analysis, DNA / standards
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / standards
  • Staphylococcus / classification*
  • Staphylococcus / enzymology
  • Staphylococcus / genetics

Substances

  • Coagulase
  • RNA, Bacterial
  • RNA, Ribosomal, 16S