Occurrence of non-O157 Shiga toxin-producing Escherichia coli in dogs with diarrhea

Ciência Rural

Cleber Jacob Silva De Paula²  José Moacir Marin¹ 

[1] ,Universidade Estadual de São Paulo Faculdade de Ciências Agrárias e VeterináriasSP ,Brasil

关键词: Escherichia coli;    STEC;    eae gene;    antimicrobial resistance;    Escherichia coli;    STEC;    gene eae;    resistência antimicrobiana;   

DOI  :  10.1590/S0103-84782008000600029

来源: SciELO

【 摘 要 】

Shiga toxigenic Escherichia coli (STEC) and Attaching and effacing E. coli (AEEC) have been associated with diarrhea illness in dogs. From January to December 2006, 92 E. coli isolates from 25 diarrheic dogs were analyzed, by screening for the presence of Shiga toxin-producing (stx 1 and stx 2) and intimin (eae) genes. Twelve isolates were detected by PCR to harbor the Shiga toxin genes (7 the stx 1 (7.6%); 5 the stx 2 (5.4%); and none both of them). Nine (9.8%) of the E. coli isolates studied were eae positive non Shiga toxin-producing. Thirteen (62.0%) isolates, carrying stx or eae gene, also showed a hemolysin production. The strains with virulence genes were also examined for resistance to 12 antimicrobial agents. Resistances to cephalothin (85.7%), streptomycin (81.0%), amoxicillin (71.4%) and gentamicin (71.4%) were predominantly observed.

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