Prima segnalazione della presenza di integroni di classe 1 e 2 in E. coli isolati da tacchini da carne
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Data di Pubblicazione:
2011
Citazione:
Prima segnalazione della presenza di integroni di classe 1 e 2 in E. coli isolati da tacchini da carne / G. Dotto, D. Giovanardi, M. Giacomelli, G. Grilli, A. Piccirillo. ((Intervento presentato al 50. convegno Convegno della Società italiana di patologia aviare tenutosi a Forlì nel 2011.
Abstract:
The aim of this study was to determine the presence of class 1 and class 2 integrons in multi-drug resistant Avian Pathogenic E. coli (APEC) isolates from diseased turkeys. Notoriously, class 1 and class 2 integrons play an important role in the selection of multi-resistant bacteria by facilitating the diffusion of antimicrobial resistance genes. Forty-eight multi-resistant strains were collected from commercial turkeys affected by colibacillosis and screened for the presence of integrons and associated gene cassettes. Eight isolates harbored class 1 integrons and 9 strains class 2 integrons. The gene cassettes combination most commonly found was dfrA1-aadA1 and dfrA1-sat2-aadA1 in class 1 and class 2 integrons, coding for aminoglycoside and trimethoprim resistance. One class 1 integron positive isolate carried a rare type of gene cassette arrangement (estX-aadA1). This study reports for the first time the presence of class 1 and 2 integrons in Avian Pathogenic E. coli (APEC) isolates from commercial turkeys.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Keywords:
avian pathogenic E. coli (APEC) ; Integrons 1 and 2 ; gene cassettes ; turkey
Elenco autori:
G. Dotto, D. Giovanardi, M. Giacomelli, G. Grilli, A. Piccirillo
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