Rapid diagnosis and strain differentiation of Mycobacterium bovis in radiometric culture by spoligotyping

Veterinary Microbiology
S RoringS D Neill

Abstract

An assessment of spoligotyping for rapid detection and strain typing of Mycobacterium bovis isolates in radiometric culture was made. Spoligotyping was applied to BACTEC 12B broth cultures of 54 lesioned bovine lymph node specimens from 44 herds in Northern Ireland. A nucleic acid sequence capture technique was performed on BACTEC cultures at growth index points of approximately (approximately) 60, approximately 200, and 999. Definitive spoligotype patterns were obtained for 90.4% and 94.2% of all 52 BACTEC culture-positives at growth indexes approximately 60 and approximately 200, respectively. Within 10 days, definitive spoligotype patterns were obtained for 84.6% of the culture-positives. This technique, therefore, allowed earlier and more accurate diagnosis of M. bovis than traditional methodologies, as well as simultaneous strain differentiation. Application of this molecular tool to BACTEC cultures would be a significant advance in bovine tuberculosis eradication programmes. Seven distinct spoligotype patterns were identified in this study, 2 of which (ST21 and ST25), had not been identified previously in cattle from Northern Ireland. Two spoligotype patterns (ST1 and ST2) accounted for 80.7% of the culture-positives. The...Continue Reading

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Citations

Nov 4, 2000·The Veterinary Journal·J F Griffin, C G Mackintosh
Sep 8, 2005·Molecular and Cellular Probes·Jane E BurtonNigel J Silman
May 7, 2013·Annual Review of Phytopathology·Matteo Garbelotto, Paolo Gonthier

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