RESUMO
Detection of tuberculosis in cattle relies on the intradermal tuberculin test (ITT), but a definitive diagnosis requires identification of the pathogen after the animal is slaughtered. DNA in nasal swabs from 50 cows was analyzed by m-PCR, targeting for the RvD1-Rv2031c and IS6110 sequences. M. bovis was identified in two of 34 tuberculous cows (5.9 percent). The use of mPCR of nasal swabs as an in vivo diagnostic tool for bovine tuberculosis is suggested.
Assuntos
Animais , Bovinos , DNA , Técnicas In Vitro , Infecções por Mycobacterium , Mycobacterium bovis/genética , Mycobacterium bovis/patogenicidade , Reação em Cadeia da Polimerase , Tuberculose Bovina/genética , Técnicas e Procedimentos Diagnósticos , Métodos , Métodos , VirulênciaRESUMO
Detection of tuberculosis in cattle relies on the intradermal tuberculin test (ITT), but a definitive diagnosis requires identification of the pathogen after the animal is slaughtered. DNA in nasal swabs from 50 cows was analyzed by m-PCR, targeting for the RvD1-Rv2031c and IS6110 sequences. M. bovis was identified in two of 34 tuberculous cows (5.9%). The use of mPCR of nasal swabs as an in vivo diagnostic tool for bovine tuberculosis is suggested.
RESUMO
Isolates from suggestive bovine tuberculosis lesions were tested by a multiplex polymerase chain reaction (m-PCR) targeting for RvD1Rv2031c and IS6110 sequences, specific for M. bovis and Mycobacterium tuberculosis complex respectively. The m-PCR successfully identified as M. bovis 88.24% of the isolates.
Colônias isoladas a partir de lesões sugestivas de tuberculose bovina foram testadas pela reação múltipla em cadeia da polimerase, usando oligonucleotídeos direcionados para as seqüências genômicas RvD1Rv2031c e IS6110, específicas para M. bovis e para o complexo Mycobacterium tuberculosis, respectivamente. A m-PCR identificou, com sucesso, 88,24% das colônias isoladas como M. bovis.
Assuntos
Animais , Bovinos , Sequência de Bases , Técnicas In Vitro , Mycobacterium bovis/isolamento & purificação , Oligonucleotídeos/análise , Reação em Cadeia da Polimerase , Tuberculose Bovina , Métodos , MétodosRESUMO
Isolates from suggestive bovine tuberculosis lesions were tested by a multiplex polymerase chain reaction (m-PCR) targeting for RvD1Rv2031c and IS6110 sequences, specific for M. bovis and Mycobacterium tuberculosis complex respectively. The m-PCR successfully identified as M. bovis 88.24% of the isolates.
