Evaluation of two different cell lysis methods for releasing mycobacterial nucleic acids in the INNO-LiPA mycobacteria test

Diagn Microbiol Infect Dis. 2003 May;46(1):19-23. doi: 10.1016/s0732-8893(03)00010-5.

Abstract

The INNO-LiPA Mycobacteria Test (Innogenetics, N.V., Belgium) is a PCR-based reverse hybridization assay for the simultaneous identification of several mycobacterial species. We evaluated two simplified lysis methods for mycobacterial DNA release for application in the INNO-LiPA Mycobacteria Test. The two methods were based on either (i) heat treatment or (ii) sonication. Both methods were performed directly on 45 positive liquid cultures (MB-BacT, BioMérieux, Marcy l'Etoile, France) containing 17 different mycobacterial species. These two simple lysis procedures demonstrated similar effectiveness (100%) to that recommended by the manufacturer. They also significantly shortened the time required for mycobacterial DNA release.

Publication types

  • Comparative Study
  • Evaluation Study

MeSH terms

  • Bacterial Typing Techniques / methods*
  • Cell Physiological Phenomena
  • Culture Media
  • DNA, Bacterial / analysis
  • Humans
  • Mycobacterium / classification*
  • Mycobacterium / isolation & purification
  • Nucleic Acid Amplification Techniques
  • Nucleic Acids / analysis
  • Nucleic Acids / metabolism
  • Polymerase Chain Reaction / methods
  • Reagent Kits, Diagnostic
  • Sensitivity and Specificity

Substances

  • Culture Media
  • DNA, Bacterial
  • Nucleic Acids
  • Reagent Kits, Diagnostic