Diarrheagenic Escherichia coli isolates from neonatal alpacas mainly display F17 fimbriae adhesion gene

Juan Siuce, Lenin Maturrano, Jane C. Wheeler, Raul Rosadio

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

Neonatal domestic South American Camelid llamas and alpacas suffer from an enteric disease complex characterized by abdominal distention, lethargy, dehydration, and eventual fatal septicemia. Analysis of rectal swabs from neonatal alpacas suffering clinical diarrheas has constantly isolated Escherichia coli, mainly the EPEC and EHEC pathotypes. The present communication reports the results of molecular analysis of 226 E. coli strains from neonatal alpaca rectal swabs. The isolates were initially tested by multiple PCR, to identify E. coli virulence genes eae, bfp, Lt, Stx1, Stx2, sta, stab, and lt genes and a similar test to detect F4, F5, F6, F17, and F41fimbriae adhesin genes. Forty-two of the 226 (18.5%) isolates tested positive for at least one pathogenic gene, 25 of the 42 were classified as EPEC (3 positives for only eae and 22 for both eae and bfp) and the remaining 17 were classified as EHEC. Twenty-four (57%) of the 42 isolates tested positive to F17 adhesin while one was positive for both F6 and F17.

Idioma originalInglés
Páginas (desde-hasta)3917-3921
Número de páginas5
PublicaciónTropical Animal Health and Production
Volumen52
N.º6
DOI
EstadoPublicada - 1 nov 2020
Publicado de forma externa

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