Identificação de Mycobacterium bovis e Mycobacterium tuberculosis por PCR

Abstract

Mycobacterium bovis and Mycobacterium tuberculosis are the causative agents of bovine and human tuberculosis, respectively. The standard diagnosis is based on the isolation and identification of bacterial colonies through biochemical methods. These methodologies in addition to being costly, require an environment with high level of biosecurity and a great time of cultivation and tests to obtain the results. The molecular tests based on the principles of real-time PCR using the fluorophore Eva Green were efficient in the identification of M. bovis and M. tuberculosis. In addition, analyses were performed with primers and molecular markers, described in the literature, able to differentiate the M. bovis of M. tuberculosis by PCR. The results showed that some of the molecular markers are found in both microorganisms. The work of this dissertation has enabled the development of real-time PCR techniques able to identify colonies of M. bovis and M. tuberculosis.