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Year 2014 - Volume 34, Number 11
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Evaluation of a MPB70-ELISA to differentiate Mycobacterium bovis- from M. avium-sensitized swine, 34(11):1069-1072
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ABSTRACT.- Marassi C.D., Oliveira F.C.S., Pinheiro S.R., Azevedo S.S., Soto F.R.M., Oelemann W., Lilenbaum W. & Vasconcellos S.A. 2014. Evaluation of a MPB70-ELISA to differentiate Mycobacterium bovis- from M. avium-sensitized swine. Pesquisa Veterinária Brasileira 34(11):1069-1072. Departamento de Microbiologia e Parasitologia, Universidade Federal Fluminense, Rua Professor Hernani Mello 101, Lab 309, Niterói, RJ 24210-130, Brazil. E-mail: mipwalt@vm.uff.br
Swine are susceptible to different mycobacteria species, being Mycobacterium bovis an agent of tuberculosis, with most significant zoonotic risks, while M. avium determines a granulomatous lymphadenitis with low zoonotic risk. Currently performed intradermal tests present some important limitations, such as the lack of ability to detect anergic animals or to differentiate among mycobacterial species. In order to improve the TB diagnosis, serological assays have been developed, with encouraging results. The purpose of this study was to evaluate the performance of a MPB70-ELISA in 82 piglets divided into four groups: sensitized by inactivated M. bovis, M. avium, inoculated with oil adjuvant, or with saline solution. The test was able to discriminate between an animal sensitized by M. bovis and animals of the three other groups, including M. avium-sensitized animals; for this reason, we suggest that MPB70-ELISA could be used as a complementary tool for discriminating the agent of the mycobacteriosis, and therefore to diagnose tuberculosis in a swine herd. |
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