Distribution of
            <i>Aeromonas hydrophila</i>
            hybridization groups and their virulence properties in Australasian clinical and environmental strains

Kirov, SM; Hudson, John; Hayward, Laura J.; Mott, S.J.

doi:10.1111/j.1472-765x.1994.tb00806.x

Cited by 18 publications

(16 citation statements)

References 10 publications

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“…Kirov, Hudson, Hayward, and Mott (1994) assigned 182 A. hydrophila strains isolated from the environmental (food and water), clinical (stool) and other sources to one of three HGs on the basis of biochemical characteristics, and tested them with regard to their ability to produce virulence factors. Strains HG1 (nine, common isolates from clinical sources) were more likely to produce virulence factors, while HG3 strains formed the majority of environmental isolates.…”

Section: Characteristics Of a Hydrophilamentioning

confidence: 99%

The importance of Aeromonas hydrophila in food safety

2006

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Section: Characteristics Of a Hydrophilamentioning

confidence: 99%

The importance of Aeromonas hydrophila in food safety

2006

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“…Enterotoxic activity in two of three mice is considered as indicative of virulence potential (Kirov et al . 1994).…”

Section: Enterotoxic Activitymentioning

confidence: 99%

Virulence markers in Aeromonas hydrophila and Aeromonas veronii biovar sobria isolates from freshwater fish and from a diarrhoea case

et al. 2002

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Aims: To evaluate the public health significance of representative strains of two Aeromonas spp., mainly from freshwater fish, on the basis of production of virulence-associated factors and presence of the haemolytic genes aerA and hlyA. Methods and Results: Eleven strains of Aer. hydrophila, three strains of Aer. veronii biovar sobria (all from freshwater fish) and one strain of Aer. hydrophila from human diarrhoea were tested for potential virulence traits and for the presence of the haemolytic genes aerA and hlyA. Ten Aer. hydrophila isolates were aerA + hlyA + and two aerA + hlyA -. Aeromonas veronii biovar sobria isolates were aerA -hlyA -. Strains from the three genotypes showed enterotoxic activity in the suckling mouse assay. At 28°C, four Aer. hydrophila fish strains could be considered as potentially virulent (possessing at least two of these characteristics: haemolytic, cytotoxic and enterotoxic). One Aer. veronii biovar sobria strain and the clinical isolate were cytotoxic on Vero cells. When grown at 4°C, these six isolates fulfilled virulence criterion, but at 37°C, only one fish strain, an Aer. hydrophila, did. Conclusions: The potential health risk derived from the presence of Aer. hydrophila and Aer. veronii biovar sobria in ice-stored freshwater fish should not be underestimated. Significance and Impact of the Study: Expression of virulence factors is affected by temperature incubation and not always related to the presence of haemolytic genes.

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“…However, some studies showed only certain species have displayed clinical importance for aquatic animals and are recognized as potential pathogens causing diseases (10). In recent years, some new aquatic pathogens belong to the genus Aeromonas have been reported (18,24).…”

Section: Introductionmentioning

confidence: 99%

Characterization of pathogenic Aeromonas veronii bv. veronii associated with ulcerative syndrome from Chinese longsnout catfish (Leiocassis longirostris Günther)

Cai¹,

Wu²,

Jian³

et al. 2012

Braz. J. Microbiol.

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ABSTRACT273 bacterial strains were isolated from 20 Chinese longsnout catfish samples. The biochemical characteristics of all strains conformed to the species description of Aeromonas veronii bv. veronii on the basis of Vitek GNI+ card. Furthermore, 16S rDNA, gyrB and rpoD sequences of the representative strain PY50 were sequenced and showed high similarity with A. veronii bv. veronii in Genbank. Antibioticresistance of the representative strain PY50 was assessed by the Kirby-Bauer disk diffusion method, and the results showed it was susceptible and moderately susceptible to 13 and 4 of the 21 antimicrobial agents tested. Extracellular products of strain PY50 contained gelatinase, lecithinase, elastase, most of lipase and lipopolysaccharide. Virulence of strain PY50 and extracellular products to Chinese longsnout catfish were also tested, and LD 50 were about 3.47×10 4 CFU per fish and 11.22 g per fish in intraperitoneal injection respectively. This is the first report that A. veronii bv. veronii was the pathogenic agent of ulcerative syndrome in Chinese longsnout catfish.

show abstract

Distribution of Aeromonas hydrophila hybridization groups and their virulence properties in Australasian clinical and environmental strains

Cited by 18 publications

References 10 publications

The importance of Aeromonas hydrophila in food safety

The importance of Aeromonas hydrophila in food safety

Virulence markers in Aeromonas hydrophila and Aeromonas veronii biovar sobria isolates from freshwater fish and from a diarrhoea case

Characterization of pathogenic Aeromonas veronii bv. veronii associated with ulcerative syndrome from Chinese longsnout catfish (Leiocassis longirostris Günther)

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