Differentiation of Mycobacterium tuberculosis Complex and Nontuberculous Mycobacterial Liquid Cultures by Using Peptide Nucleic Acid-Fluorescence In Situ Hybridization Probes

Author:

Drobniewski F. A.1,More P. G.1,Harris G. S.1

Affiliation:

1. PHLS Mycobacterium Reference Unit, Department of Microbiology, Dulwich Public Health Laboratory, Guy's King's and St Thomas' Medical School, Dulwich Hospital, London SE22 8QF, United Kingdom

Abstract

ABSTRACT A blinded comparison of peptide nucleic acid-fluorescence in situ hybridization (PNA-FISH) with routine identification methods was performed on 74 consecutively positive mycobacterial liquid cultures. All Mycobacterium tuberculosis cultures (48 of 48) and 22 of 27 (81.5%) nontuberculous cultures were correctly identified (including one mixed culture). Five isolates yielded no reaction with either probe and were identified as Mycobacterium xenopi , Mycobacterium fortuitum , or Mycobacterium flavescens .

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

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