期刊
ANTIBIOTICS-BASEL
卷 10, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/antibiotics10010028
关键词
Escherichia coli; antimicrobials; multidrug resistance; colistin; PFGE profile; veterinary
资金
- projet Studio sulla correlazione tra le principali malattie aziendali e il benessere animale la biosicurezza e il management nelle aziende di bovine da latte [RC IZSSI 12/15]
This study focused on the biodiversity, pathogenicity, and antibiotic resistance profile of 104 E. coli strains isolated from domestic animals in Eastern Sicily. The strains showed multi-resistance against at least three antibiotic classes, with high levels of resistance observed against amoxicillin, tylosin, sulfamethoxazole, and erythromycin. The study also identified two EPEC strains and highlighted a wide variety of genotyping profiles through PFGE analysis.
The emergence of multidrug resistance among Enterobacteriaceae in livestock poses a serious public health threat. Escherichia coli, a usual host of intestinal microbiota, is recognized also as etiological agent of numerous infections widespread in both humans and animals. The colibacillosis is one of the most reported zoonoses worldwide, typically treated with antibiotics in the primary stages. This strategy has promoted the onset of antibiotic-resistant serotypes of E. coli, reducing the effectiveness of therapeutic treatments and contributing to antibiotic resistance spread. The current study focused on biodiversity, pathogenicity, and antibiotic resistance profile of 104 E. coli strains isolated from domestic animals in Eastern Sicily. The strains were isolated from sick animals and carcasses of six different animal species and screened for resistance against 16 antibiotic molecules, as recommended by WHO and OIE. The antibiotic resistance patterns highlighted that all strains were multi-resistant, showing resistance to at least three antibiotic classes. The highest incidence of resistance was observed against amoxicillin (100%), tylosin (97%), sulfamethoxazole (98%), and erythromycin (92%), while the lowest for colistin (8%). The pathotype characterization identified two EPEC strains and the study of genetic linkage (PFGE) showed a wide variety of profiles. The current study emphasized the wide range of multidrug resistance and genotyping profiles in E. coli isolated in Easter Sicily.
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