Virulence genes of Escherichia coli in diarrheic and healthy calves
| Autor: | María Laura Casaux, Déborah Ernst, Federico Giannitti, Martín Oliver, Magalí Fernández, Rubén D. Caffarena, Pablo Zunino, Ana Umpiérrez, Martín Fraga, Carlos Schild |
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| Rok vydání: | 2021 |
| Předmět: |
Diarrhea
Microbiology (medical) Virulence Factors Cattle Diseases Virulence Biology medicine.disease_cause Microbiology Feces 03 medical and health sciences Pathogenic Escherichia coli STX2 Escherichia coli medicine Animals Escherichia coli Infections 0303 health sciences 030306 microbiology Toxin Escherichia coli Proteins Zoonosis General Medicine medicine.disease biology.organism_classification Bacterial adhesin Cattle |
| Zdroj: | Revista Argentina de Microbiología. 53:34-38 |
| ISSN: | 0325-7541 |
| Popis: | Escherichia coli ETEC, EPEC, NTEC and STEC/EHEC pathotypes are often isolated from bovine feces. The objective of this study was to detect 21 E. coli virulence genes in feces from 252 dairy calves in Uruguay (149 with neonatal diarrhea - NCD - and 103 asymptomatic). Genes iucD, f17A, afa8E, papC, clpG and f17G(II) were the most prevalent (81.3%; 48.4%; 37.3%; 35.7%; 34.1%; 31.3%, respectively). Genes eae, stx1and stx2 were poorly represented; 13/252 animals harbored one or a combination of these genes. The prevalence of the cnf gene was 4.4%, while that of cdt-IV and cdt-III genes was 24.2% and 12.7% respectively. This study reports updated data about the virulence profiles of E. coli in dairy calves in Uruguay. A large number of adhesins and toxin genes were detected. Our results demonstrate that E. coli from bovine feces has diarrheagenic and extraintestinal profiles although other NCD risks factors may contribute to the disease outcome. |
| Databáze: | OpenAIRE |
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