Open AccessIncidence of toxic Aeromonas isolated from food and human infection
Author(s) -
Martins Luciano Moura,
Marquez Rosabel Falcón,
Yano Tomomasa
Publication year - 2002
Publication title -
fems immunology & medical microbiology
Language(s) - English
Resource type - Journals
eISSN - 1574-695X
pISSN - 0928-8244
DOI - 10.1111/j.1574-695x.2002.tb00559.x
Subject(s) - aeromonas , microbiology and biotechnology , aeromonas salmonicida , biology , aeromonas veronii , hemolysin , enterotoxin , vibrionaceae , vero cell , toxin , bacteria , virology , virulence , escherichia coli , biochemistry , virus , genetics , gene
One hundred and ninety four Aeromonas isolates (99 from food and 95 from clinical sources) were analyzed as to the species involved and the toxins produced. Of the clinical isolates of Aeromonas , 29.4% were enterotoxigenic, 43.1% were hemolytic and 89% were cytotoxigenic. Among the food isolates, 18.2% were enterotoxigenic, 17.1% were hemolytic and 72.7% were cytotoxigenic. Aeromonas sobria and Aeromonas veronii produced more enterotoxin and cytotoxin than the other isolates, whereas A. veronii and Aeromonas salmonicida produced cell‐free hemolysin. Most of the isolates produced cytotoxins (81%) active on Vero (green monkey kidney) and Chinese hamster ovary cells, but only the culture supernatant of A. sobria produced vacuolation in these cell lines.