Adhesive and invasive capacities of Edwardsiella tarda isolated from South American sea lion.
Edwarsiella tarda is a zoonotic bacterium that can be isolated from humans, animals and the environment. Although E. tarda is primarily considered a fish pathogen, it is the only species of its genus considered to be pathogenic for humans as well. A survey of zoonotic intestinal bacteria in fresh feces from South American sea lions (SASL) Otaria flavescens, reported E. tarda as the most frequently isolated species. In this study, we used HEp-2 cells to establish in vitro the adherence and invasive ability of 17 E. tarda strains isolated from SASL fecal material. All the strains were able to adhere and invade HEp-2 cells with adhesion and invasion percentages ranging from 56 to 100% and 21 to 74%, respectively. Despite the expression of these pathogenic factors, further investigation is needed to determine whether this bacterium could play a role as primary pathogen for this and other species of pinnipeds.
['Fernández|Araceli|A|', 'Villanueva|María Paz|MP|', 'González|Mario|M|', 'Fernández|Fabiola|F|', 'Latif|Fadua|F|', 'Flores|Sandra Nonier|SN|', 'Fernández|Heriberto|H|']
D000818:Animals D001422:Bacterial Adhesion D020609:Edwardsiella tarda D004705:Endocytosis D004756:Enterobacteriaceae Infections D056945:Hep G2 Cells D022781:Hepatocytes D006801:Humans D046070:Sea Lions D013020:South America
invasion Edwarsiella tarda Otaria flavescens adherence