Distribution and homology of foodborne-associated extended-spectrumβ-lactamases-producing Escherichia coli
10.3969/j.issn.1671-9638.2016.12.003
- VernacularTitle:食源性产超广谱β-内酰胺酶大肠埃希菌的分布及其同源性研究
- Author:
Yulin BIN
;
Meng WANG
- Keywords:
foodborne;
extended-spectrumβ-lactamase;
ESBLs;
Escherichiacoli;
pulsed-field gel electrophoresis;
PF-GE;
clustering
- From:
Chinese Journal of Infection Control
2016;15(12):907-912
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the distribution and homology of foodborne-associated extended-spectrumβ-lacta-mases (ESBLs)-producing Escherichiacoli (E. coli).Methods ESBLs-producing E. coli were isolated from differ-ent food specimens in Shaoguan from 2014 to 2015,strains were typed with pulsed-field gel electrophoresis (PFGE) and BioNumerics software.Results 1 1 strains of diarrhea-causing E. coli and 29 strains of ESBLs-producing E. co-li were isolated from 347 different sources of food specimens. PFGE analysis showed that 29 strains could be divided into 21 cluster groups,group A was predominant pattern,which included 7 strains(J2,J3,J4,J7,J9,B4,S3), group B included 2 strains (J6,J8),the other strains were sporadic clones. Similarity coefficient (SC)of 3 strains (J2,J7,J9)from health practitioners was 100% ,SC of strains from drinking water and patients with diarrhea (B4) was 97. 1% ,SC of S3 strain and 4 strains (J2,J3,J7,J9 )from health practitioners were all>90. 0% . Conclusion Foodborne-associated ESBLs-producing E. coli are widely distributed in food,water,animal,and pop-ulations,and can be transmitted through food chain,surveillance should enhanced to avoid further spread.
