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Journal of Clinical Microbiology, Sep 1997, 2210-2214, Vol 35, No. 9
YO Goguet de la Salmoniere, HM Li, G Torrea, A Bunschoten, J van Embden and B Gicquel
Spoligotyping (for spacer oligotyping) is an easy, economical, and rapid
way of typing Mycobacterium tuberculosis complex strains with the DR spacer
markers (J. Kamerbeek et al., J. Clin. Microbiol. 35:907-914, 1997; D. van
Soolingen et al., 33:3234-3248, 1995). The stability of the markers was
demonstrated by showing that all the Mycobacterium bovis BCG strains tested
gave the same spoligotyping pattern. None of the 42 atypical mycobacterial
strains tested gave a spoligotyping signal, indicating the specificity of
the technique for M. tuberculosis complex. The utility of the spoligotyping
method was demonstrated by analyzing 106 isolates of M. tuberculosis
obtained over 1 year in three Paris hospitals. The results obtained by this
technique were compared to those obtained by Torrea et al. (G. Torrea et
al., J. Clin. Microbiol. 34:1043-1049, 1996) by IS6110-based restriction
fragment length polymorphism (RFLP) analysis. Strains from patients with
epidemiological relationships that were in the same IS6110-RFLP cluster
were also in the same spoligotyping group. Spoligotyping was more
discriminative than RFLP analysis for strains with one or two copies of
IS6110. RFLP analysis did not discriminate between the nine strains with
one or two IS6110 bands with no known epidemiological relation, whereas
spoligotyping distinguished between eight different types. IS6I10-RFLP
analysis split some of the spoligotyping clusters, particularly when the
IS6110 copy number was high. Therefore, we propose a strategy for typing M.
tuberculosis strains in which both markers are used.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Evaluation of spoligotyping in a study of the transmission of Mycobacterium tuberculosis
Unite de Genetique Mycobacterienne, Institut Pasteur, Paris, France. ygoguet@pasteur.fr
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