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Association of virulence factors, phylogenetic groups and antimicrobial resistance markers in Escherichia coli from Badin city, Pakistan.
Journal of Chemotherapy 2017 Februrary
BACKGROUND: Escherichia coli, the most frequent cause of UTIs has extensive genetic substructure and can be assigned to eight phylogroups, A, B1, B2, C, D, E, F and Escherichia cryptic clade I. We investigated the distribution of virulence determinants and antimicrobial resistance genes in relation to phylogenetic groups.
METHODS: A total of 77 E. coli isolates were collected from Civil Hospital Badin, Pakistan. Isolates were assigned phylogroups using quadruplex PCR method, while virulence and antibiotic resistance genes, blaCTX-M and blaNDM-1 were also detected using PCR.
RESULTS: Thirty-four isolates were assigned to group B2, while 23, 2, 1, 7 and 10 isolates were assigned to F, B1, A/C, clade I/II and negative, respectively. Among virulence genes, prevalence of papC (83%) was highest followed by aer (57%), papGII (16%), papGIII (14%), cnf (9%), hly (5%) and sfa (6%). Of these isolates, 23% and 9% were positive for blaCTX-M and blaNDM-1, respectively.
METHODS: A total of 77 E. coli isolates were collected from Civil Hospital Badin, Pakistan. Isolates were assigned phylogroups using quadruplex PCR method, while virulence and antibiotic resistance genes, blaCTX-M and blaNDM-1 were also detected using PCR.
RESULTS: Thirty-four isolates were assigned to group B2, while 23, 2, 1, 7 and 10 isolates were assigned to F, B1, A/C, clade I/II and negative, respectively. Among virulence genes, prevalence of papC (83%) was highest followed by aer (57%), papGII (16%), papGIII (14%), cnf (9%), hly (5%) and sfa (6%). Of these isolates, 23% and 9% were positive for blaCTX-M and blaNDM-1, respectively.
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