The Salmonella mutagenicity assay in a surface water quality monitoring program based on a 20-year survey

Umbuzeiro, Gisela de Aragão; Roubicek, Deborah A.; Sanchez, Petra Sanchez; Sato, Maria Inês Z.

doi:10.1016/s1383-5718(01)00139-5

Cited by 54 publications

(33 citation statements)

References 27 publications

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“…According to classification described in Umbuzeiro, Roubicek, Sanchez, and Sato (2001), this effluent had a moderate mutagenic potential during the summer.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Dioxide Chloride on Water Quality of Balneário Camboriú Beach, Brazil

Kuroshima

Barreiros

Lacava

et al. 2006

Environ Monit Assess

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Since February 1999, the Municipal Wastewater Treatment Plant (MWTP) of Balneário Camboriú, Brazil, started a complementary treatment with ClO(2) application on its effluent. It was realized to minimize its impacts caused by increase of the population during summer. This study was realized in order to verify the influence of this compound in the water quality and the environmental evaluations. Samples of surface water were collected in this environment between January 1997 and June 2001 for chemical and microbiological surveys. The results had shown that after application of ClO(2), fecal coliforms were decreased about six times in the beach (2.3 x 10(3) to 3.5 x 10(2) MPN/100 ml) and three times in the river (3.3 x 10(4) to 1.0 x 10(4) MPN/100 ml), during summer time. NH(4) (+) showed an increase of about four times and 1.5 times, respectively, to beach and river. These results are showing the influence of ClO(2) on chemical and microbiological parameters.

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“…According to classification described in Umbuzeiro, Roubicek, Sanchez, and Sato (2001), this effluent had a moderate mutagenic potential during the summer.…”

Section: Discussionmentioning

confidence: 99%

The Influence of Dioxide Chloride on Water Quality of Balneário Camboriú Beach, Brazil

Kuroshima

Barreiros

Lacava

et al. 2006

Environ Monit Assess

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“…The contamination of water resources by genotoxic compounds is a worldwide problem (Claxton et al, 1998;Kong, 1998;Vargas et al, 2001;Ohe et al, 2003;Buschini et al, 2004). Because of the importance of water quality to health, many toxicity and genotoxicity tests have been used in combination with physical and chemical analysis in order to evaluate both water and environmental quality (Smaka-Kincl et al, 1996;Claxton et al, 1998;Umbuzeiro et al, 2001;Vargas et al, 2001;Ohe et al, 2003;Isidori et al, 2004). Water quality is an important risk factor in cancer and relative risk has been estimated in areas supplied with mutagenic drinking water.…”

Section: Introductionmentioning

confidence: 99%

Cytotoxic and genotoxic potential of surface water from the Pitimbu river, northeastern/RN Brazil

Egito

Medeiros

et al. 2007

Genet. Mol. Biol.

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In this study, the onion (Allium cepa) root test was used to evaluate the genotoxicity of the Pitimbu River (Natal city, Brazil) surface water. The water was collected at five sampling sites along the river and one sample was obtained after the treatment (flocculation, chlorination and pH correction) of the river water for human consumption. All raw river water samples increased the frequency of chromosomal abnormalities and/or micronuclei and two of the water samples produced alterations in the mitotic index of the root cells. Two of the water samples also altered root growth and two produced morphological modifications in the A. cepa roots. Water collected from a site near an industrial area was the most consistently toxic and genotoxic of the samples. Although the water chlorinated for human consumption was not genotoxic, the data indicate that surface water from the Pitimbu River contains toxic and genotoxic compounds that potentially may impact this aquatic ecosystem.

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“…For mutagenicity events, the estimated potential of the sample results in 10,900 to 331,400 revertants per sample liter equivalent. According to Umbuzeiro et al (2001) classification, the revertants per milliliter values of the samples correspond to extreme mutagenicity (more than 5,000 revertants per liter). The responses in winter correspond to 11,000 and 59,200 revertants per liter equivalent, which also correspond to extreme mutagenicity.…”

Section: Resultsmentioning

confidence: 99%

Ecotoxicological Evaluation in an Effluent and Petrochemical Waste Disposal Area

Terra

Feiden

Lemos

et al. 2009

Water Air Soil Pollut

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Water and sediment were studied to assess the impact of wastes from an area used for a disposal area of treated petrochemical effluents in Rio Grande do Sul, Brazil. The study was performed using the Daphnia magna (Straus 1820) for chronical evaluations, mutagenesis in Salmonella/microsome assays, and micronuclei induction in cultures of V79 cell to assess genotoxicity. Six sites were defined for chronic and genotoxic tests by micronuclei induction with liquid and sediment samples. Long-term tests were planned in semi-static flow, with microcrustaceans 2 to 26 h old in the beginning of assays. The minimum level of reproduction required to maintain the species was not reached. There are delays for the beginning of the reproductive process. Survival was also affected in some samples. The reproductive responses were more sensitive on identifying environmental quality than the survival rate. The study of mutagenicity by Salmonella/microsome assay made it possible to define the seasonality of the components showing greater frequency in winter. The predominant event was the frameshift mutation in assays with the presence of metabolism. However, the cytotoxic activity, although present in all seasons, was less frequent in winter. The genotoxicity analysis in V79 cells exposed to liquid samples from the area also showed that cytotoxicity was the most frequent event. This may have interfered in the detection of a potential micronuclei induction. The results showed that, even after treatment, effluents disposed on the soil continue with active pollutants interfering in cladoceran's quality of life, cellular physiology, and DNA integrity.

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The Salmonella mutagenicity assay in a surface water quality monitoring program based on a 20-year survey

Cited by 54 publications

References 27 publications

The Influence of Dioxide Chloride on Water Quality of Balneário Camboriú Beach, Brazil

The Influence of Dioxide Chloride on Water Quality of Balneário Camboriú Beach, Brazil

Cytotoxic and genotoxic potential of surface water from the Pitimbu river, northeastern/RN Brazil

Ecotoxicological Evaluation in an Effluent and Petrochemical Waste Disposal Area

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