Biofilm-forming ability, antibiotic resistance and phylogeny of Escherichia coli isolated from extra intestinal infections of humans, dogs, and chickens

This study determined the biofilm-forming ability of E. coli isolated from extraintestinal infections of humans, chickens, and dogs in relation to the phylogroup, type of infection, and antibiotic resistance. Isolates from chickens showed significantly higher biofilm-forming ability compared to those causing urinary tract infections in humans (p = 0.0001). Further, isolates belonging to phylogroup B1 displayed a higher likelihood to form biofilms. Resistance to ciprofloxacin and trimethoprim-sulfamethoxazole was positively correlated with biofilm-forming ability. Harbouring plasmid-mediated quinolone resistance gene, qnrS was also positively correlated with biofilm formation. This study provides insight into factors such as phylogroup and the type of infections that could enhance biofilm formation, as well as genotypic and phenotypic antibiotic resistance that could correlate with the ability to form biofilms.PMID:38217950 | DOI:10.1016/j.cimid.2023.102123

Source: Comparative immunology, microbiology and infectious diseases. - January 13, 2024 Category: Allergy & Immunology Authors: G A D K K Gunathilaka W A P M Dewasmika U M Sandaruwan N G D A K Neelawala G E D Madhumali B N Dissanayake M A R Priyantha D V P Prasada D R A Dissanayake Source Type: research