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Leão MB, da Rosa PCC, Wagner C, Lugokenski TH, Dalla Corte CL. Methylmercury and diphenyl diselenide interactions in Drosophila melanogaster: effects on development, behavior, and Hg levels. Environ Sci Pollut Res Int 2018; 25:21568-21576. [PMID: 29785592 DOI: 10.1007/s11356-018-2293-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 10/31/2017] [Accepted: 05/09/2018] [Indexed: 06/08/2023]
Abstract
Methylmercury (MeHg) is a highly toxic environmental pollutant which binds with a high affinity to selenol groups. In view of this, seleno-compounds have been investigated as MeHg antidotes. In the present study, we evaluated the effects of the co-exposure to MeHg and the seleno-compound diphenyl diselenide (PhSe)2 on Drosophila melanogaster. We measured the survival rate, developmental survival, locomotor ability, reactive oxygen species (ROS) production, and Hg levels in D. melanogaster exposed to MeHg and/or (PhSe)2 in the food. Exposure to MeHg caused a reduction in the survival rate, developmental survival, and locomotion in D. melanogaster. In addition, MeHg increased the ROS production and mercury levels in flies. The co-exposure to MeHg and (PhSe)2 did not prevent the toxic effects of MeHg in D. melanogaster. On the contrary, the co-exposure enhanced the toxic effects on the locomotor ability and developmental survival. This effect may be explained by the fact that the co-exposure increased the Hg levels in body when compared to flies exposed only to MeHg, suggesting that MeHg and (PhSe)2 interaction may increase Hg body burden in D. melanogaster which could contribute for the increased toxicity observed in the co-exposure.
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Affiliation(s)
- Mayara B Leão
- Universidade Federal do Pampa, Campus Caçapava do Sul, Caçapava do Sul, RS, 96570-000, Brazil
| | - Paulo C C da Rosa
- Universidade Federal do Pampa, Campus Caçapava do Sul, Caçapava do Sul, RS, 96570-000, Brazil
| | - Caroline Wagner
- Universidade Federal do Pampa, Campus Caçapava do Sul, Caçapava do Sul, RS, 96570-000, Brazil
| | - Thiago H Lugokenski
- Universidade Federal do Pampa, Campus Caçapava do Sul, Caçapava do Sul, RS, 96570-000, Brazil
| | - Cristiane L Dalla Corte
- Universidade Federal do Pampa, Campus Caçapava do Sul, Caçapava do Sul, RS, 96570-000, Brazil.
- Centro de Ciências Naturais e Exatas, Departamento de Bioquímica e Biologia Molecular, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Camobi, Universidade Federal de Santa Maria, Santa Maria, RS, 97105-900, Brazil.
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Abolaji AO, Kamdem JP, Lugokenski TH, Farombi EO, Souza DO, da Silva Loreto ÉL, Rocha JBT. Ovotoxicants 4-vinylcyclohexene 1,2-monoepoxide and 4-vinylcyclohexene diepoxide disrupt redox status and modify different electrophile sensitive target enzymes and genes in Drosophila melanogaster. Redox Biol 2015; 5:328-339. [PMID: 26117601 PMCID: PMC4491645 DOI: 10.1016/j.redox.2015.06.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 05/29/2015] [Accepted: 06/01/2015] [Indexed: 02/06/2023] Open
Abstract
The compounds 4-vinylcyclohexene 1,2-monoepoxide (VCM) and 4-Vinylcyclohexene diepoxide (VCD) are the two downstream metabolites of 4-vinylcyclohexene (VCH), an ovotoxic agent in mammals. In addition, VCM and VCD may be found as by-products of VCH oxidation in the environment. Recently, we reported the involvement of oxidative stress in the toxicity of VCH in Drosophila melanogaster. However, it was not possible to determine the individual contributions of VCM and VCD in VCH toxicity. Hence, we investigated the toxicity of VCM and VCD (10–1000 µM) in flies after 5 days of exposure via the diet. Our results indicated impairments in climbing behaviour and disruptions in antioxidant balance and redox status evidenced by an increase in DCFH oxidation, decreases in total thiol content and glutathione-S-transferase (GST) activity in the flies exposed to VCM and VCD (p<0.05). These effects were accompanied by disruptions in the transcription of the genes encoding the proteins superoxide dismutase (SOD1), kelch-like erythroid-derived cap-n-collar (CNC) homology (ECH)-associated protein 1 (Keap-1), mitogen activated protein kinase 2 (MAPK-2), catalase, Cyp18a1, JAFRAC 1 (thioredoxin peroxidase 1) and thioredoxin reductase 1 (TrxR-1) (p<0.05). VCM and VCD inhibited acetylcholinesterase (AChE) and delta aminolevulinic acid dehydratase (δ-ALA D) activities in the flies (p<0.05). Indeed, here, we demonstrated that different target enzymes and genes were modified by the electrophiles VCM and VCD in the flies. Thus, D. melanogaster has provided further lessons on the toxicity of VCM and VCD which suggest that the reported toxicity of VCH may be mediated by its transformation to VCM and VCD.
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Affiliation(s)
- Amos O Abolaji
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria; Departamento de Bioquimica e Biologia Molecular, Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.
| | - Jean P Kamdem
- Departamento de Bioquimica e Biologia Molecular, Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil; Departamento de Bioquímica, Instituto de Ciências Básica da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS CEP 90035-003, Brazil
| | | | - Ebenezer O Farombi
- Drug Metabolism and Molecular Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Diogo O Souza
- Departamento de Bioquímica, Instituto de Ciências Básica da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS CEP 90035-003, Brazil
| | - Élgion L da Silva Loreto
- Laboratório de Biologia Molecular-LabDros, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - João B T Rocha
- Departamento de Bioquimica e Biologia Molecular, Bioquímica Toxicológica, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.
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Ferreira JLR, Lonné MN, França TA, Maximilla NR, Lugokenski TH, Costa PG, Fillmann G, Antunes Soares FA, de la Torre FR, Monserrat JM. Co-exposure of the organic nanomaterial fullerene C₆₀ with benzo[a]pyrene in Danio rerio (zebrafish) hepatocytes: evidence of toxicological interactions. Aquat Toxicol 2014; 147:76-83. [PMID: 24374850 DOI: 10.1016/j.aquatox.2013.12.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [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: 05/31/2013] [Revised: 12/04/2013] [Accepted: 12/07/2013] [Indexed: 06/03/2023]
Abstract
Compounds from the nanotechnology industry, such as carbon-based nanomaterials, are strong candidates to contaminate aquatic environments because their production and disposal have exponentially grown in a few years. Previous evidence shows that fullerene C60, a carbon nanomaterial, can facilitate the intake of metals or PAHs both in vivo and in vitro, potentially amplifying the deleterious effects of these toxicants in organisms. The present work aimed to investigate the effects of fullerene C60 in a Danio rerio (zebrafish) hepatocyte cell lineage exposed to benzo[a]pyrene (BaP) in terms of cell viability, oxidative stress parameters and BaP intracellular accumulation. Additionally, a computational docking was performed to investigate the interaction of the fullerene C60 molecule with the detoxificatory and antioxidant enzyme πGST. Fullerene C60 provoked a significant (p<0.05) loss in cellular viability when co-exposed with BaP at 0.01, 0.1 and 1.0 μg/L, and induced an increase (p<0.05) in BaP accumulation in the cells after 3 and 4h of exposure. The levels of reactive oxygen species (ROS) in the cells exposed to BaP were diminished (p<0.05) by the fullerene addition, and the increase of the GST activity observed in the BaP-only treated cells was reduced to the basal levels by co-exposure to fullerene. However, despite the potential of the fullerene molecule to inhibit π GST activity, demonstrated by the computational docking, the nanomaterial did not significantly (p>0.05) alter the enzyme activity when added to GST purified extracts from the zebrafish hepatocyte cells. These results show that fullerene C60 can increase the intake of BaP into the cells, decreasing cell viability and impairing the detoxificatory response by phase II enzymes, such as GST, and this latter effect should be occurring at the transcriptional level.
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Affiliation(s)
- Josencler L Ribas Ferreira
- Universidade Federal do Rio Grande-FURG, Instituto de Ciências Biológicas (ICB), Campus Carreiros, Av. Itália km 8 s/n (96200-970), Rio Grande, RS, Brazil; Programa de Pós Graduação em Ciências Fisiológicas, Fisiologia Animal Comparada, Instituto de Ciências Biológicas (ICB), FURG, Brazil; Rede de Nanotoxicologia (MCTI/CNPq), Nanotoxicologia ocupacional e ambiental: subsídios científicos para estabelecer marcos regulatórios e avaliação de riscos, Rio Grande, RS, Brazil.
| | - María Noelia Lonné
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Buenos Aires, Argentina
| | - Thiago A França
- Universidade Federal do Rio Grande-FURG, Instituto de Ciências Biológicas (ICB), Campus Carreiros, Av. Itália km 8 s/n (96200-970), Rio Grande, RS, Brazil
| | - Naiana R Maximilla
- Universidade Federal do Rio Grande-FURG, Instituto de Ciências Biológicas (ICB), Campus Carreiros, Av. Itália km 8 s/n (96200-970), Rio Grande, RS, Brazil
| | - Thiago H Lugokenski
- Universidade Federal de Santa Maria (UFSM), Departamento de Química, Santa Maria, RS, Brazil
| | - Patrícia G Costa
- Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática (CONECO), Instituto de Oceanografia (IO), FURG, Brazil
| | - Gilberto Fillmann
- Laboratório de Microcontaminantes Orgânicos e Ecotoxicologia Aquática (CONECO), Instituto de Oceanografia (IO), FURG, Brazil
| | - Félix A Antunes Soares
- Universidade Federal de Santa Maria (UFSM), Departamento de Química, Santa Maria, RS, Brazil
| | - Fernando R de la Torre
- Universidad Nacional de Luján, Departamento de Ciencias Básicas, Buenos Aires, Argentina
| | - José María Monserrat
- Universidade Federal do Rio Grande-FURG, Instituto de Ciências Biológicas (ICB), Campus Carreiros, Av. Itália km 8 s/n (96200-970), Rio Grande, RS, Brazil; Programa de Pós Graduação em Ciências Fisiológicas, Fisiologia Animal Comparada, Instituto de Ciências Biológicas (ICB), FURG, Brazil; Rede de Nanotoxicologia (MCTI/CNPq), Nanotoxicologia ocupacional e ambiental: subsídios científicos para estabelecer marcos regulatórios e avaliação de riscos, Rio Grande, RS, Brazil; Instituto Nacional de Ciência e Tecnologia de Nanomateriais de Carbono (CNPq), Brazil
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Lugokenski TH, Müller LG, Taube PS, Rocha JB, Pereira ME. Inhibitory effect of ebselen on lactate dehydrogenase activity from mammals: a comparative study with diphenyl diselenide and diphenyl ditelluride. Drug Chem Toxicol 2010; 34:66-76. [DOI: 10.3109/01480541003782294] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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