Phenotypic identification ofAeromonasgenomospecies from clinical and environmental sources

Abstract

A collection of 983 Aeromonas isolates from environmental and clinical sources have been identified to the genomospecies level. A phenotypic method identified 93% of the strains. The use of citrate and the production of acid from sorbitol enabled the members of the Aeromonas hydrophila complex to be separated. The most common genomospecies from intestinal sources were Aeromonas veronii biotype sobria and Aeromonas caviae. The former, together with A. hydrophila, was the most frequently isolated species of extraintestinal origin. Most pathogenic species were very prevalent in environmental samples, with A. veronii biotype sobria being the most common in lakes and reservoirs (41.5%) and in treated drinking water (25.0%), and A. caviae was the most common in sea water (26.0%) and milk products (35.5%). Aeromonas hydrophila (18.1%) was the second most prevalent species isolated in untreated drinking water. Since Aeromonas infections are generally regarded as a water- and food-borne diseases, the high environmental prevalence of these pathogenic genomospecies should be regarded as an important threat to public health.

Changes in abundance and community structure of bacteria associated with buoyantMicrocystiscolonies during the decline of cyanobacterial bloom (autumn–winter transition)

“…Both micro-organisms were not observed to inhabit Microcystis colonies in summer during the bloom (Shi et al, 2010). Aeromonas has been found in wastewater, chlorinated water supplies, surface water and ground water, as well as estuarine and marine environments (Borrell et al, 1998;Pettibone, 1998;Bianucci et al, 2001). Some bacterial strains of these species are cold-adapted (Singh et al, 2000).…”

Mechanistic Studies on the Mononuclear ZnII-Containing Metallo-β-lactamase ImiS from Aeromonas sobria

“…Aeromonads are enteric, anaerobic, Gram-negative pathogens that cause a range of symptoms from mild diarrhea to acute gastroenteritis in humans (8), and Aeromonas species have been found in wound infections (9). One alarming characteristic of Aeromonads is that they are water-borne and typically are present in purified, drinking water (10). To date there is no crystal structure available for ImiS, but the crystal structure of another subclass B2 enzyme, CphA from Aeromonas hydrophila, has been recently reported (11).…”

Aislamiento e identificación de especies pertenecientes a los géneros Aeromonas, Vibrio y Plesiomonas procedentes de muestras extra-intestinales en Cuba

“…Similares resultados han sido publicados por Brenden RA y cols, Howard RJ y cols y por Borrell N y cols, quienes en sus investigaciones demostraron el amplio espectro de circulación de estos microorganismos en muestras clí-nicas extra-intestinales [16][17][18] .…”