Evaluation of the INNO-LiPA mycobacteria v2 assay for identification of aquatic mycobacteria

Fifty-seven isolates of mycobacteria comprising 10 reference strains, 47 field isolates and one non-Mycobacterium isolate were screened using commercial INNO-LiPA v2 assay kits. All mycobacteria isolates tested hybridized with the Mycobacterium genus probe on the LiPA strip. All M. marinum, M. fortu...

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Détails bibliographiques
Publié dans:Journal of fish diseases. - 1998. - 31(2008), 12 vom: 01. Dez., Seite 931-40
Auteur principal: Pourahmad, F (Auteur)
Autres auteurs: Thompson, K D, Taggart, J B, Adams, A, Richards, R H
Format: Article en ligne
Langue:English
Publié: 2008
Accès à la collection:Journal of fish diseases
Sujets:Evaluation Study Journal Article DNA, Ribosomal Spacer Reagent Kits, Diagnostic
Description
Résumé:Fifty-seven isolates of mycobacteria comprising 10 reference strains, 47 field isolates and one non-Mycobacterium isolate were screened using commercial INNO-LiPA v2 assay kits. All mycobacteria isolates tested hybridized with the Mycobacterium genus probe on the LiPA strip. All M. marinum, M. fortuitum and M. chelonae reference and field strains and three out of the four M. gordonae isolates hybridized to their corresponding species- or complex-specific probes. Two cultures (a type strain and a field isolate) yielded mixed growth of two mycobacterial species, i.e. M. chelonae and M. fortuitum. A Mycobacterium isolate from one of these cultures was subsequently purified and correctly identified with the kit. However, sequence analysis of the 16S-23S rRNA internal transcribed spacer (ITS) region of various mycobacteria isolates revealed a misidentification of M. shottsii and M. pseudoshottsii with the kit because these isolates reacted with the M. marinum/M. ulcerans probe. Moreover, nine of the 13 field isolates presumed to be M. fortuitum from the results of the kit had closer ITS sequence homology with M. conceptionense, a species which, to our knowledge, has never been reported in fish. These findings highlight the need to redesign the M. fortuitum-M. peregrinum probe included in the INNO-LiPA assay and to introduce additional complex-specific probes into the kit. Nevertheless, the kit proved to be a rapid and reliable method for identifying mycobacteria in the aquatic environment and would be particularly useful in laboratories without sequencing facilities
Description:Date Completed 11.12.2008
Date Revised 30.09.2020
published: Print
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Citation Status MEDLINE
ISSN:1365-2761
DOI:10.1111/j.1365-2761.2008.00968.x