Aeromonas detection and their toxins from drinking water from reservoirs and drinking fountains


Autoria(s): RAZZOLINI, Maria Tereza Pepe; BARI, Marisa Di; SANCHEZ, Petra Sanchez; SATO, Maria Ines Zanoli
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

19/10/2012

19/10/2012

2008

Resumo

Aeromonads are inhabitants of aquatic ecosystems and are described as being involved in intestinal disturbances and other infections. A total of 200 drinking water samples from domestic and public reservoirs and drinking fountains located in Sao Paulo (Brazil), were analyzed for the presence of Aeromonas. Samples were concentrated by membrane filtration and enriched in APW. ADA medium was used for Aeromonas isolation and colonies were confirmed by biochemical characterization. Strains isolated were tested for hemolysin and toxin production. Aeromonas was detected in 12 samples (6.0%). Aeromonas strains (96) were isolated and identified as: A. caviae (41.7%), A. hydrophila (15.7%), A. allosacharophila (10.4%), A. schubertii (1.0%) and Aeromonas spp. (31.2%). The results revealed that 70% of A. caviare, 66.7% of A. hydrophila, 80% of A. allosacharophila and 46.6% of Aeromonas spp. were hemolytic. The assay for checking production of toxins showed that 17.5% of A. caviae, 73.3% of A. hydrophila, 60% of A. allosacharophila, 100% of A. schubertii, and 33.3% of Aeromonas spp. were able to produce toxins. The results demonstrated the pathogenic potential of Aeromonas, indicating that the presence of this emerging pathogen in water systems is a public health concern.

Identificador

JOURNAL OF WATER AND HEALTH, v.6, n.1, p.117-123, 2008

1477-8920

http://producao.usp.br/handle/BDPI/26658

10.2166/wh.2007.018

http://dx.doi.org/10.2166/wh.2007.018

Idioma(s)

eng

Publicador

I W A PUBLISHING

Relação

Journal of Water and Health

Direitos

restrictedAccess

Copyright I W A PUBLISHING

Palavras-Chave #aeromonas #drinking water #enterotoxin production #hemolytic activity #SUCKLING MOUSE MODEL #VIRULENCE FACTORS #HYDROPHILA #INFECTION #STRAINS #SOBRIA #HEMOLYSIN #DIARRHEA #CELLS #FOOD #Environmental Sciences #Public, Environmental & Occupational Health #Microbiology #Water Resources
Tipo

article

original article

publishedVersion