Isolation, identification, molecular typing, and drug resistance of Escherichia coli from infected cattle and sheep in Xinjiang, China.
Vet Med Sci
; 9(3): 1359-1368, 2023 05.
Article
em En
| MEDLINE
| ID: mdl-36977209
ABSTRACT
BACKGROUND:
Escherichia coli infections are common in Xinjiang, a major region of cattle and sheep breeding in China. Therefore, strategies are required to control E. coli. The aim of this study was to investigate the phylogenetic groups, virulence genes, and antibiotic resistance characteristics of E. coli isolates.METHODS:
In this study, 116 tissue samples were collected from the organs of cattle and sheep that were suspected of having E. coli infections between 2015 and 2019. Bacteria in the samples were identified using a biochemical identification system and amplification of 16S rRNA, and the phylogenetic groupings of E. coli isolates were determined by multiplex polymerase chain reactions. In addition, PCR detection and analysis of virulence factors, antibiotic resistance genes, and drug-resistant phenotypes of E. coli isolates were performed.RESULTS:
A total of 116 pathogenic E. coli strains belonging to seven phylogenetic groups were isolated, with the majority of isolates in groups A and B1. Among the virulence genes, curli-encoding crl had the highest detection rate of 97.4%, followed by hemolysin-encoding hlyE with the detection rate of 94.82%. Antimicrobial susceptibility test results indicated that the isolates had the highest rates of resistance against streptomycin (81.9%).CONCLUSION:
These characteristics complicate the prevention and treatment of E. coli-related diseases in Xinjiang.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Doenças dos Ovinos
/
Doenças dos Bovinos
/
Infecções por Escherichia coli
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Animals
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article