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Journal of Clinical Microbiology, Nov 1996, 2734-2740, Vol 34, No. 11
A Aranaz, E Liebana, A Mateos, L Dominguez, D Vidal, M Domingo, O Gonzolez, EF Rodriguez-Ferri, AE Bunschoten, JD Van Embden and D Cousins
The spacer oligonucleotide typing (spoligotyping) method was evaluated for
its ability to differentiate Mycobacterium bovis strains. This method
detects the presence or absence of spacers of the direct repeat locus of
the M. bovis genome. The spacers in the direct repeat locus are amplified
by PCR and are detected by hybridization of the biotin- labelled PCR
product with a membrane containing oligonucleotides derived from spacer
sequences that have previously been bound to a membrane. One hundred
eighty-two M. bovis isolates from domestic animals (cattle, goat, sheep,
and cats) and wild animals (deer and wild boar) were spoligotyped, and the
results were compared with those obtained by IS6110 restriction fragment
length polymorphism analysis. Two rather homogeneous clusters of isolates
containing 20 and 4 types, respectively, were identified by spoligotyping.
The first cluster included isolates from cattle, cats, and feral animals.
By spoligotyping, isolates from the Spanish wild boar and deer had the same
pattern as some bovine isolates, suggesting transmission between these
animals and cattle and highlighting the importance of the study of these
reservoirs. The second cluster included all the caprine and ovine isolates.
Within each cluster, the patterns of the different strains differed only
slightly, suggesting that the spoligotypes may be characteristic of strains
from particular animal species. Spoligotyping proved to be useful for
studying the epidemiology of bovine M. bovis isolates, especially of those
isolates containing only a single copy of IS6110. In view of our results,
we suggest fingerprinting all M. bovis strains by the spoligotyping method
initially and then by IS6110 restriction fragment length polymorphism
typing of the strains belonging to the most common spoligotypes.
Copyright © 1996 by the American Society for Microbiology. All rights reserved.
Spacer oligonucleotide typing of Mycobacterium bovis strains from cattle and other animals: a tool for studying epidemiology of tuberculosis
Departamento de Patologia Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense de Madrid, Spain.
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