Matrix Assisted Laser Desorption Ionization-Time-of-Flight mass spectrometry identification of Mycobacterium bovis in Bovinae.

In this study, Matrix Assisted Laser Desorption Ionization-Time-of-Flight (MALDITOF) mass spectrometry was used to identify Mycobacterium bovis from cattle and buffalo tissue isolates from the North and South regions of Brazil, grown in solid medium and previously identified by Polymerase Chain Reaction (PCR) based on Region of Difference 4 (RD4), sequencing and spoligotyping. For this purpose, the protein extraction protocol and the mass spectra reference database were optimized for the identification of 80 clinical isolates of mycobacteria. As a result of this optimization, it was possible to identify and differentiate M. bovis from other members of the Mycobacterium tuberculosis complex with 100% specificity, 90.91% sensitivity and 91.25% reliability. MALDI-TOF MS methodology described herein provides successful identification of M. bovis within bovine/bubaline clinical samples, demonstrating its usefulness for bovine tuberculosis diagnosis in the future.

Bibliographic Details

Main Authors:	BACANELLI, G., OLARTE, L. C., SILVA, M. R., RODRIGUES, R. A., CARNEIRO, P. A. M., KANEENE, J. B., PASQUATTI, T. N., TAKATANI, H., ZUMÁRRAGA, M. J., ETGES, R. N., ARAUJO, F. R., VERBISCK, N. V.
Other Authors:	GISELE BACANELLI, Universidade Federal de Mato Grosso do Sul - UFMS/Programa de Pós-Graduação em Biotecnologia e Biodiversidade da Região Centro-Oeste
Format:	Artigo de periódico biblioteca
Language:	English eng
Published:	2019-12-30
Subjects:	Matrix Assisted Laser Desorption Ionization-Time-of-Flight (MALDI-TOF) mass spectrometry, Bovine tuberculosis, Mycobacterium bovis BCG, Mycobacterium tuberculosis complex,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1117863
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