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Sachi ITDC, Bonomo MM, Sakuragui MM, Modena PZ, Paulino MG, Carlos RM, Fernandes JB, Fernandes MN. Biochemical and morphological biomarker responses in the gills of a Neotropical fish exposed to a new flavonoid metal-insecticide. Ecotoxicol Environ Saf 2021; 208:111459. [PMID: 33069948 DOI: 10.1016/j.ecoenv.2020.111459] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/30/2020] [Accepted: 10/02/2020] [Indexed: 06/11/2023]
Abstract
The flavonoid metal-insecticide [Mg(hesp)2(phen)], denominated MgHP, has high potential for controlling agricultural pests. If applied in large scale, it may reach aquatic ecosystems and be harmful to the biota. This study evaluated the effects of MgHP in the gills of the Neotropical fish, Prochilodus lineatus by determining the activity of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and glutathione s-transferase (GST), and the levels of glutathione (GSH) and lipid peroxidation (LPO) after 24 and 96 h exposure to 0, 1, 10, 100 and 1000 μg L-1. The histopathological changes with emphases to mitochondria-rich cells (MRC) were evaluated as well. After 24 h exposure the enzyme activities and the GSH and LPO levels were unchanged however, after 96 h exposure to high MgHP concentration (1000 μg L-1), the GST activity and GSH levels increased. Oxidative stress measured as LPO levels did not occur after MgHP exposure in both periods. Gill tissue alterations increased after MgHP exposure to 10, 100 and 1000 μg L-1. Cellular atrophy, pillar cells changes, filament epithelium hyperplasia and hypertrophy, lamellar epithelium hyperplasia were the most frequent histopathology. MRC in the filament epithelium decreased after exposure to 24 h and increased after 96 h indicating possible transitory osmo-ionic disruption. P. lineatus exhibited high tolerance to MgHP. The increased GST activity and GSH levels after 96 h exposure suggested possible MgHP accumulation and concentration- and time-dependent response. Histopathology in the gills of exposed fish occurred at high MgHP concentrations. These results suggested that the MgHP into water, at high concentrations, affect the gills by changing GST activity, GSH levels and histology being useful biomarkers for MgHP water contamination.
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Affiliation(s)
- Ivelise Teresa de Castro Sachi
- Postgraduate Program in Ecology and Natural Resources, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, 13563-905 São Carlos, SP, Brazil; Department of Physiological Sciences, Federal University of São Carlos, Rodovia Washington, Luiz Km 235, 13563-905 São Carlos, SP, Brazil
| | - Marina Marques Bonomo
- Postgraduate Program in Ecology and Natural Resources, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, 13563-905 São Carlos, SP, Brazil; Department of Physiological Sciences, Federal University of São Carlos, Rodovia Washington, Luiz Km 235, 13563-905 São Carlos, SP, Brazil
| | - Marise Margareth Sakuragui
- Postgraduate Program in Ecology and Natural Resources, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, 13563-905 São Carlos, SP, Brazil; Department of Physiological Sciences, Federal University of São Carlos, Rodovia Washington, Luiz Km 235, 13563-905 São Carlos, SP, Brazil
| | - Pamela Zaganin Modena
- Department of Physiological Sciences, Federal University of São Carlos, Rodovia Washington, Luiz Km 235, 13563-905 São Carlos, SP, Brazil
| | - Marcelo Gustavo Paulino
- Federal University of Tocantins, Campus Araguaína, Avenida Paraguai, s/n°, Setor Cimba, 77824-838 Araguaína, TO, Brazil
| | - Rose Maria Carlos
- Chemistry Department, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, 13565-905 São Carlos, SP, Brazil
| | - João Batista Fernandes
- Chemistry Department, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, 13565-905 São Carlos, SP, Brazil
| | - Marisa Narciso Fernandes
- Postgraduate Program in Ecology and Natural Resources, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, 13563-905 São Carlos, SP, Brazil; Department of Physiological Sciences, Federal University of São Carlos, Rodovia Washington, Luiz Km 235, 13563-905 São Carlos, SP, Brazil.
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