Resistência antimicrobiana em cepas de Escherichia coli isoladas de pescado marinho comercializado na feira livre do Mucuripe - Fortaleza-CE, Brasil

Abstract

The microrganisms present in the fishing area and in the food chain entail risk of disease transmission and the transfer of antimicrobial resistance genes among bacteria. The objective of this study was to characterize the antimicrobial resistance of 79 strains of Escherichia coli isolated from 12 marine fish samples, namely (6) snapper Lutjanus purpureus and (6) cavala Scomberomorus cavala), sold at the fair of Mucuripe, in the city of Fortaleza, CE. Strains of E. coli were analyzed for susceptibility (20 antimicrobials) and the plasmid “cure” was performed. The results suggest that the species mackerel and snapper sold in street markets of the Mucuripe in city of Fortaleza can act as reservoirs of E. coli resistant to penicillins and tetracyclines. The species showed strain of E. coli with multidrug resistance profiles, indicating that the mackerel samples exhibit bacteria resistant to quinolones and fluochinolones (32.8%) while the others indicate high resistance to chloramphenicol (19.0%) and the sulphunamids (23.0%). There was resistance to inhibitors of beta-lactamases used, except for amoxicillin/clavulanic acid. Furthermore, there was prevalence of potentially multiple chromosomal resistance in the majority of tested antibiotics. The fish species studied can be disseminators of that enterobacteria, and it is important therefore continuous monitoring of fish sold at the fair of Mucuripe (Fortaleza).