Characterization of the Aeromonas hydrophila group isolated from retail foods of animal origin.
AUTOR(ES)
Palumbo, S A
RESUMO
During a recent survey of retail fresh foods of animal origin (fish and seafood, raw milk, poultry, and red meats) for organisms of the Aeromonas hydrophila group, we isolated representative strains from the various foods. In this study, we sought to characterize these isolates for biochemical properties and virulence-associated factors and to compare the food isolates with clinical isolates. We identified all food and clinical isolates as A. hydrophila and found that all isolates were typical in their biochemical reactions. Examination of the isolates for various virulence-associated factors indicated that most food and clinical isolates were serum resistant, beta-hemolytic, cytotoxin positive (against Y1 adrenal cells), hemagglutinin positive, Congo red positive, elastase positive, and staphylolysin positive. Mouse 50% lethal doses were log10 8 to 9 CFU for most isolates. All isolates had biotypes identical to those of enterotoxin-positive strains. The public health significance of these organisms in foods is not known at present, although their widespread occurrence and ability to grow competitively in foods kept at 5 degrees C represents a potential hazard.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=267443Documentos Relacionados
- Enumeration and characterization of Aeromonas hydrophila and Aeromonas caviae isolated from grocery store produce.
- Characterization of antimicrobial resistance in enterococci of animal origin.
- Inducible Oxacillin-Hydrolyzing Penicillinase in Aeromonas hydrophila Isolated from Fish
- Partial Characterization of Aerolysin, a Lytic Exotoxin from Aeromonas hydrophila
- Characterization, distribution, and microbiological associations of Fusobacterium spp. in clinical specimens of animal origin.