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Journal of Veterinary Science ; : 241-248, 2014.
Artigo em Inglês | WPRIM | ID: wpr-191844

RESUMO

Amplification of the 16S rRNA gene from a blood sample obtained from a dog in southeastern Brazil was used to confirm a naturally acquired Ehrlichia (E.) canis infection. Following isolation and culturing of the new bacterial strain called Uberlandia, partial sequences of the dsb and p28 genes were obtained. The dsb partial sequence of the novel strain was 100% similar to dsb gene sequences of E. canis obtained from different geographic areas around the world. Conversely, the p28 partial sequence for the E. canis Uberlandia strain differed at several nucleotides from other sequences available in GenBank. To confirm the antigenic profile of the Uberlandia strain, an indirect immunofluorescence assay against E. canis antigens was performed using dog sera collected from two different areas in Brazil (Uberlandia and Sao Paulo). The results suggest that both antigens were able to identify animals seropositive for E. canis in Brazil since these Brazilian strains appear to be highly conserved.


Assuntos
Animais , Cães , Masculino , Antígenos de Bactérias/sangue , Proteínas da Membrana Bacteriana Externa/genética , Proteínas de Bactérias/genética , Sequência de Bases , Brasil , Doenças do Cão/diagnóstico , Ehrlichia canis/genética , Ehrlichiose/diagnóstico , Técnica Indireta de Fluorescência para Anticorpo/veterinária , Dados de Sequência Molecular , Reação em Cadeia da Polimerase/veterinária , RNA Ribossômico 16S/genética , Alinhamento de Sequência/veterinária
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