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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Investigation of a Brazilian tannery effluent by means of zebra fish (Danio rerio) embryo acute toxicity (FET) test

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Autor(es):
Rocha, Otavio Pelegrino [1] ; De Oliveira, Danielle Palma [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Sch Pharmaceut Sci Ribeirao Preto, Lab Environm Toxicol, Ribeirao Preto, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A-CURRENT ISSUES; v. 80, n. 19-21, SI, p. 1078-1085, 2017.
Citações Web of Science: 6
Resumo

Tannery effluents consist of a complex chemical composition not only limited to primary pollutants, which also require biological detection as these compounds may produce adverse effects. The fish embryo toxicity (FET) test with Danio rerio is an alternative method in hazard and risk assessment for determination of chemical-mediated effects. The aim of this investigation was to use the FET test to detect compounds and consequent effects in Brazilian tannery effluents. Samples were collected from the inlet and outlet of the effluent treatment plant at a tannery located in Restinga, Sao Paulo, Brazil. The toxicological effects were assessed using FET assay for a period of 144 hr using indices such as (1) coagulation of fertilized eggs, (2) lack of detachment of tail-bud from yolk sac, (3) absence of spontaneous movement, (4) yolk sack edema, (5) malformation of the tail, (6) scoliosis, and (7) deformation of swim bladder in the embryos. Data showed that effluent treatment plant exposure produced acute toxicity in D. rerio embryos as evidenced by coagulation of fertilized eggs in up to 5% of all diluted samples 24 hr post fertilization for inlet effluent samples compared to 100% coagulation for outlet samples. Results demonstrated that these effects may not be attributed to metals, but to other non-detected components, such as dyes, pigments, biocides, carriers, surfactants, or other organic compounds that might be present in these complex mixtures. The use of D. rerio embryos was found to be useful as an additional tool for ecotoxicity testing to assess the potential environmental acute toxicity influence of tannery effluents. (AU)

Processo FAPESP: 08/10449-7 - Avaliação da ocorrência, toxicidade/genotoxicidade e processos para degradação de corantes em efluentes e águas superficiais
Beneficiário:Maria Valnice Boldrin
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 13/09317-7 - Avaliação do risco ecogenotoxicológico da utilização de corantes têxteis
Beneficiário:Otávio Pelegrino Rocha
Linha de fomento: Bolsas no Brasil - Doutorado