Antimicrobial resistance and genetic diversity of Salmonella Infantis isolated from foods and human samples in Morocco

Journal of Global Antimicrobial Resistance
Abdelaziz Ed-DraBrahim Bouchrif

Abstract

Genotyping of Salmonella strains is an important molecular tool to discriminate isolates and to improve epidemiological studies when an outbreak occurs. Among the DNA-based genotyping methods, pulsed-field gel electrophoresis (PFGE) is currently used to subtype Salmonella isolates. In this study, the feasibility of genotyping Salmonella enterica serotype Infantis strains using XbaI restriction enzyme was evaluated. Separation of restricted fragments was performed by PFGE. To test the possibility of applying this methodology to epidemiological investigation, a collection of 26 Salmonella Infantis strains were tested for their susceptibility to 14 antimicrobial agents and were analysed by XbaI macrorestriction followed by PFGE. Detection of class 1 integrons as well as intI1 and blaTEM genes in resistant strains was also studied. Antimicrobial susceptibility testing showed that 84.6% (22/26) of Salmonella Infantis isolates were susceptible to all of the antimicrobials tested, whereas 7.7% (2/26) had low-level resistance to β-lactams and harboured the blaTEM gene. A class 1 integron (0.8kb) and the intI1 gene (898bp) were detected in one Salmonella Infantis strain. However, five different PFGE profiles were defined by XbaI macrore...Continue Reading

Citations

May 16, 2020·Microbial Drug Resistance : MDR : Mechanisms, Epidemiology, and Disease·Grazielle Lima RodriguesCarlos Adam Conte-Junior
Aug 18, 2020·Veterinary World·M Asif HebbalJolly Deepa
Jun 22, 2019·European Journal of Microbiology & Immunology·Abdelaziz Ed-DraMohieddine Moumni
Sep 25, 2021·International Microbiology : the Official Journal of the Spanish Society for Microbiology·Sahin Namli, Yesim Soyer

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