El fenómeno suicida en cepas de Aeromonas mesófilas aisladas de muestras clínicas / The suicide phenomenon in mesophilic Aeromonas strain isolated from clinical samples

Se llevó a cabo este estudio para determinar la ocurrencia del fenómeno suicida en cepas de Aeromonas spp. aisladas de muestras clínicas, así como para relacionarlo con las características de la enfermedad diarreica. Se estudiaron 23 cepas: 10 Aeromonas sobria, 7 Aeromonas hydrophila y 6 Aeromonas caviae. Todas las cepas suicidas fueron aisladas de pacientes con enfermedad diarreica aguda, y 3 de 8, aisladas de heces no diarreicas, mostraron un perfil fenotípico intermedio. Se reportaron diferentes patrones de crecimiento asociados al fenómeno suicida

Production of enterotoxin and cytotoxin by aeromonas veronii

Fourteen strains of Aeromonas veronii were isolated from salt and fresh water in Rio de Janeiro and investigated for the presence of birulence factors. Eleven (79%) A. veronii strains were positive for enterotoxin by the suckling-mouse test and thirteen (93%) produced hemolysin. Of the 13 A. veronii strains that produced hemolysin, seven were investigated for cytotoxin production using Vero cells as indicator cells and all of them were positive