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Journal of Clinical Microbiology, April 2001, p. 1436-1442, Vol. 39, No. 4
Department of Pathology, Bacteriology and
Poultry Diseases, Faculty of Veterinary Medicine, Ghent University,
B-9820 Merelbeke,1 and Laboratorium voor
Microbiologie (WE10V), Faculteit
Wetenschappen,2 and Department of
Clinical Chemistry, Microbiology and Immunology, Faculty of
Medicine,3 Ghent University, B-9000 Ghent,
Belgium
Received 24 October 2000/Returned for modification 13 December
2000/Accepted 31 January 2001
The discriminatory power, speed, and interlaboratory
reproducibility of tRNA intergenic length polymorphism analysis
(tDNA-PCR) combined with capillary electrophoresis was evaluated for
the identification of streptococci. This method was carried out in three different laboratories under highly standardized conditions for
54 strains belonging to 18 different species. It was concluded that
interlaboratory reproducibility of tDNA fingerprints produced by means
of capillary electrophoresis was sufficiently high to permit the
exchange between different laboratories and the construction of common
libraries which can be consulted for comparison with fingerprints
obtained independently in separate laboratories. In a second step, 17 other species were included in the study and examined in one of the
participating laboratories. All Streptococcus species
studied, except S. mitis, S. oralis, S. parasanguinis, S. pneumoniae, S. thermophilus, and S. vestibularis,
showed distinguishable tDNA fingerprints. A database of
well-characterized strains was constructed to enable computer-aided
identification of unknown streptococcal isolates.
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.4.1436-1442.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Application and Evaluation of the Interlaboratory
Reproducibility of tRNA Intergenic Length Polymorphism Analysis
(tDNA-PCR) for Identification of Streptococcus
Species
*
Corresponding author. Mailing address: Laboratory of
Bacteriology and Mycology, Faculty of Veterinary Medicine, Ghent
University, Salisburylaan 133, B-9820 Merelbeke, Belgium. Phone: 32 9 264 74 34. Fax: 32 9 264 74 94. E-mail:
Margo.Baele{at}rug.ac.be.
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