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Updated: Aug 20, 2026

Multiplex Detection of Bacteria in Complex Clinical and Environmental Samples using Oligonucleotide-coupled Fluorescent Microspheres
11:09

Multiplex Detection of Bacteria in Complex Clinical and Environmental Samples using Oligonucleotide-coupled Fluorescent Microspheres

Published on: October 23, 2011

[The use of Multiplex PCR-RFLP method (multilocus RFLP) in identification and differentiation of enterococci]

Tomasz Jarzembowski1

  • 1Katedra i Zakład Mikrobiologii Lekarskiej AM w Gdańsku.

Medycyna Doswiadczalna I Mikrobiologia
|November 17, 2004
PubMed

Insights

This study introduces a modified multilocus sequence typing (MLST) method for differentiating Enterococcus faecalis subspecies. The approach successfully identified 23 distinct types among 32 isolates, showing its potential for microbial analysis.

Area of Science:

  • Microbiology
  • Molecular Biology
  • Genetics

Background:

  • Enterococcus faecalis is a significant pathogen.
  • Accurate subspecies differentiation is crucial for understanding its epidemiology and pathogenesis.
  • Existing methods may lack sufficient discriminatory power.

Purpose of the Study:

  • To propose and evaluate a modified multilocus sequence typing (MLST) approach for subspecies differentiation of Enterococcus faecalis.
  • To assess the discriminatory potential of analyzing specific antigen-encoding and housekeeping genes.

Main Methods:

  • A modified multilocus sequence typing (MLST) approach was employed.
  • Amplification and analysis of four genes (ace, efaA, salA, pyrC) were performed using SspI endonuclease.
  • Multilocus Restriction Analysis (MLRA) was conducted on polymorphic regions of these genes.

Main Results:

  • The modified MLST method successfully differentiated 32 Enterococcus faecalis isolates.
  • Analysis identified 23 distinct types with varying levels of genetic identity (21.4% to 100%).
  • The approach demonstrated significant discriminatory power for E. faecalis subspecies.

Conclusions:

  • The proposed modified multilocus sequence typing (MLST) method shows promise for Enterococcus faecalis subspecies differentiation.
  • Further research is warranted to fully validate the clinical and epidemiological utility of this technique.

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