| Texto completo | |
| Autor(es): |
Fujiwara, Gabriel Hiroshi
;
Utsunomiya, Heidi Samantha Moraes
;
Ferraz, Joao Victor Cassiel
;
Gutierres, Davi Marques
;
Fernandes, Isabela Ferreira
;
Carvalho, Cleoni dos Santos
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ECOTOXICOLOGY; v. 33, n. 6, p. 13-pg., 2024-04-22. |
| Resumo | |
Metal contamination of the environment poses a significant threat to human health and can cause significant damage to aquatic ecosystems. Danio rerio was exposed to Sorocaba River water for 96 h from two different sites in summer (S) and winter (W). Concentrations of Al, Cd, Cu, Mn and Zn were determined in the exposure water and in sediment. At the end of the exposure, the concentrations of Al, Cu and Mn at the Ibi & uacute;na point (P1) and Mn at the Itupararanga point (P2) decreased compared to the initial concentrations in the water. In summer and winter, the highest concentrations of Cu and Mn were found in the sediment. Exposure to the Sorocaba River water caused various responses both in summer and winter. For example, GPx decreased in winter, Glutathione S-Transferase (GST) increased in summer, and Nitric Oxide Synthase (NOS) decreased in both seasons in the viscera. In winter, SOD Superoxide Dismutase (SOD) increased, while GPx and GST (winter) decreased in muscle; regarding viscera carbonyl proteins, there was an increase in the summer at P2. Acetylcholinesterase activity decreased in the brain in winter at P2 and NOS decreased in the summer-exposed groups and increased in the winter P2-exposed group. Lactate dehydrogenase (LDH) and malate dehydrogenase (MDH) decreased in viscera (S, P1) and increased in muscle (S, P1 and P2). The glucose and triglycerides increased in muscle, both in summer and winter. Correlation analysis revealed associations between biomarkers from different organs. These alterations suggest that the fish experienced oxidative stress in response to exposure to the Sorocaba River, contaminated with metals, highlighting their vulnerability to environmental pollutants. (AU) | |
| Processo FAPESP: | 17/23781-9 - Avaliação ecotoxicológica da água do rio Sorocaba utilizando uma análise integrada de biomarcadores bioquímicos e morfológicos em girinos de rã-touro, Lithobates catesbeianus (Shaw, 1802). |
| Beneficiário: | Cleoni dos Santos Carvalho |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 20/06879-8 - Avaliação ecotoxicológica de metais potencialmente tóxicos das águas e solo do rio Pirajibú por análises de biomarcadores bioquímicos em girinos de rãs-touro. |
| Beneficiário: | João Victor Cassiel Ferraz |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |