Isolation, susceptibility profiles and genomic analysis of a colistin-resistant Salmonella enterica serovar Kentucky strain COL-R.

Autor: Rose TFA; Department of Veterinary Public Health and Epidemiology, Madras Veterinary College, TANUVAS, Chennai, 600007 India., Kannan P; Department of Veterinary Public Health and Epidemiology, Madras Veterinary College, TANUVAS, Chennai, 600007 India., Ruban SW; Department of Livestock Products Technology, Veterinary College, KVAFSU, Hebbal, Bangalore, 560024 India., Srinivas K; Division of Veterinary Public Health, ICAR-Indian Veterinary Research Institute, Izatnagar, 243122 India.; Division of Animal and Fisheries Sciences, ICAR Research Complex for NEH Region, Umiam, 793103 India., Milton AAP; Division of Animal and Fisheries Sciences, ICAR Research Complex for NEH Region, Umiam, 793103 India., Ghatak S; Division of Animal and Fisheries Sciences, ICAR Research Complex for NEH Region, Umiam, 793103 India., Elango A; Veterinary College and Research Institute, TANUVAS, Salem, 636112 India., Rajalakshmi S; Department of Veterinary Microbiology, Madras Veterinary College, TANUVAS, Chennai, 600007 India., Sundaram S; Department of Veterinary Public Health and Epidemiology, Madras Veterinary College, TANUVAS, Chennai, 600007 India.
Jazyk: angličtina
Zdroj: 3 Biotech [3 Biotech] 2023 May; Vol. 13 (5), pp. 140. Date of Electronic Publication: 2023 Apr 26.
DOI: 10.1007/s13205-023-03559-2
Abstrakt: Salmonella enterica serovar Kentucky is a frequent cause for clinical infections in human patients. They are isolated and reported with multidrug resistance from the foods of animal origin from various countries. However, studies inferring the colistin resistance are limited. Hence, the current study reports the genetic factors and genomic analysis of the colistin-resistant Salmonella enterica serovar Kentucky strain COL-R for better understanding of its pathogenic potential and phylogenetic relatedness. The S. Kentucky strain COL-R was successfully isolated from chicken meat during ongoing surveillance of food of animal origin. Antimicrobial susceptibility testing revealed resistance to cefoxitin, erythromycin, gentamicin, tetracycline, and most disturbingly to ciprofloxacin and colistin (broth microdilution method). Whole-genome sequence of the COL-R strain was subjected to various in silico analysis to identify the virulence factors, antimicrobial resistance genes, pathogenicity islands and sequence type. The S . Kentucky COL-R strain belonged to sequence type (ST) 198 with a high probability (0.943) of being a human pathogen. Besides presence of integrated phage in the S . Kentucky COL-R genome, 38 genes conferring resistance to various antimicrobials and disinfectants were also identified. Nucleotide Polymorphism analysis indicated triple mutations in gyr A and par C genes conferring fluoroquinolone resistance. Phylogenomic analysis with 31 other S. Kentucky genomes revealed discernible clusters with S . Kentucky COL-R strain latching onto a cluster of high diversity (geographic location and isolation sources). Taken together, our results document the first occurrence of colistin resistance in a fluoroquinolone resistant S . Kentucky COL-R strain isolated from retail chicken and provide crucial information on the genomic features of the strain.
Supplementary Information: The online version contains supplementary material available at 10.1007/s13205-023-03559-2.
Competing Interests: Conflict of interestThe authors declare that there is no conflict of interests regarding the publication of this paper.
(© King Abdulaziz City for Science and Technology 2023.)
Databáze: MEDLINE
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