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Trevisan R, Flores-Nunes F, Dolores ES, Mattos JJ, Piazza CE, Sasaki ST, Taniguchi S, Montone RC, Bícego MC, Dos Reis IMM, Zacchi FL, Othero BNM, Bastolla CLV, Mello DF, Fraga APM, Wendt N, Toledo-Silva G, Razzera G, Dafre AL, de Melo CMR, Bianchini A, Marques MRF, Bainy ACD. Thiol oxidation of hemolymph proteins in oysters Crassostrea brasiliana as markers of oxidative damage induced by urban sewage exposure. Environ Toxicol Chem 2017; 36:1833-1845. [PMID: 27363828 DOI: 10.1002/etc.3543] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 02/22/2016] [Revised: 03/28/2016] [Accepted: 06/29/2016] [Indexed: 06/06/2023]
Abstract
Urban sewage is a concerning issue worldwide, threatening both wildlife and human health. The present study investigated protein oxidation in mangrove oysters (Crassostrea brasiliana) exposed to seawater from Balneário Camboriú, an important tourist destination in Brazil that is affected by urban sewage. Oysters were exposed for 24 h to seawater collected close to the Camboriú River (CAM1) or 1 km away (CAM2). Seawater from an aquaculture laboratory was used as a reference. Local sewage input was marked by higher levels of coliforms, nitrogen, and phosphorus in seawater, as well as polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), linear alkylbenzenes (LABs), and fecal steroid in sediments at CAM1. Exposure of oysters to CAM1 caused marked bioaccumulation of LABs and decreased PAH and PCB concentrations after exposure to both CAM1 and CAM2. Protein thiol oxidation in gills, digestive gland, and hemolymph was evaluated. Lower levels of reduced protein thiols were detected in hemolymph from CAM1, and actin, segon, and dominin were identified as targets of protein thiol oxidation. Dominin susceptibility to oxidation was confirmed in vitro by exposure to peroxides and hypochlorous acid, and 2 cysteine residues were identified as potential sites of oxidation. Overall, these data indicate that urban sewage contamination in local waters has a toxic potential and that protein thiol oxidation in hemolymph could be a useful biomarker of oxidative stress in bivalves exposed to contaminants. Environ Toxicol Chem 2017;36:1833-1845. © 2016 SETAC.
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Affiliation(s)
- Rafael Trevisan
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Fabrício Flores-Nunes
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Euler S Dolores
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Jacó J Mattos
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Clei E Piazza
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Sílvio T Sasaki
- Oceanographic Institute, University of São Paulo, São Paulo, Brazil
| | - Satie Taniguchi
- Oceanographic Institute, University of São Paulo, São Paulo, Brazil
| | | | - Márcia C Bícego
- Oceanographic Institute, University of São Paulo, São Paulo, Brazil
| | - Isis M M Dos Reis
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Flávia L Zacchi
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Bárbara N M Othero
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Camila L V Bastolla
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Danielle F Mello
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Ana Paula M Fraga
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Nestor Wendt
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | | | - Guilherme Razzera
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Alcir L Dafre
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Cláudio M R de Melo
- Department of Aquaculture, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Adalto Bianchini
- Department of Physiological Sciences, Federal University of Rio Grande Foundation, Rio Grande, Brazil
| | - Maria R F Marques
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Afonso C D Bainy
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Brazil
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Pessatti TB, Lüchmann KH, Flores-Nunes F, Mattos JJ, Sasaki ST, Taniguchi S, Bícego MC, Dias Bainy AC. Upregulation of biotransformation genes in gills of oyster Crassostrea brasiliana exposed in situ to urban effluents, Florianópolis Bay, Southern Brazil. Ecotoxicol Environ Saf 2016; 131:172-180. [PMID: 27085375 DOI: 10.1016/j.ecoenv.2016.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 11/27/2015] [Revised: 03/24/2016] [Accepted: 04/04/2016] [Indexed: 06/05/2023]
Abstract
The release of untreated sanitary sewage, combined with unplanned urban growth, are major factors contributing to degradation of coastal ecosystems in developing countries, including Brazil. Sanitary sewage is a complex mixture of chemicals that can negatively affect aquatic organisms. The use of molecular biomarkers can help to understand and to monitor the biological effects elicited by contaminants. The aim of this study was to evaluate changes in transcript levels of genes related to xenobiotic biotransformation in the gills of oysters Crassostrea brasiliana transplanted and kept for 24h at three areas potentially contaminated by sanitary sewage (Bücheller river, BUC; Biguaçu river, BIG; and Ratones island, RAT), one farming area (Sambaqui beach, SAM) and at one reference site (Forte beach, FOR) in the North Bay of Santa Catarina Island (Florianópolis, Brazil). Transcript levels of four cytochrome P450 isoforms (CYP2AU1, CYP3A-like, CYP356A1-like and CYP20A1-like), three glutathione S-transferase (GST alpha-like, GST pi-like and GST microsomal 3-like) and one sulfotransferase gene (SULT-like) were evaluated by means of quantitative reverse transcription PCR (qRT-PCR). Chemical analysis of the sediment from each site were performed and revealed the presence of aliphatic and polycyclic aromatic hydrocarbons, linear alkylbenzenes and fecal sterols in the contaminated areas (BUC and BIG). Water quality analysis showed that these sites had the highest levels of fecal coliforms and other parameters evidencing the presence of urban sewage discharges. Among the results for gene transcription, CYP2AU1 and SULT-like levels were upregulated by 20 and 50-fold, respectively, in the oysters kept for 24h at the most contaminated site (BUC), suggesting a role of these genes in the detoxification of organic pollutants. These data reinforce that gills possibly have an important role in xenobiotic metabolism and highlight the use of C. brasiliana as a sentinel for monitoring environmental contamination in coastal regions.
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Affiliation(s)
- Tomás B Pessatti
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry - LABCAI, Federal University Santa Catarina, Florianópolis, Brazil
| | - Karim H Lüchmann
- Laboratory of Biochemistry and Molecular Biology - LBBM, Fishery Engineering Department, Santa Catarina State University, Laguna, Brazil
| | - Fabrício Flores-Nunes
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry - LABCAI, Federal University Santa Catarina, Florianópolis, Brazil
| | - Jacó J Mattos
- Aquaculture Pathology Research Center - NEPAQ, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Sílvio T Sasaki
- Laboratory of Marine Organic Chemistry, Oceanographic Institute, University of São Paulo, São Paulo 05508-120, Brazil
| | - Satie Taniguchi
- Laboratory of Marine Organic Chemistry, Oceanographic Institute, University of São Paulo, São Paulo 05508-120, Brazil
| | - Márcia C Bícego
- Laboratory of Marine Organic Chemistry, Oceanographic Institute, University of São Paulo, São Paulo 05508-120, Brazil
| | - Afonso Celso Dias Bainy
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry - LABCAI, Federal University Santa Catarina, Florianópolis, Brazil.
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dos Reis IMM, Mattos JJ, Garcez RC, Zacchi FL, Miguelão T, Flores-Nunes F, Toledo-Silva G, Sasaki ST, Taniguchi S, Bícego MC, Cargnin-Ferreira E, Bainy ACD. Histological responses and localization of the cytochrome P450 (CYP2AU1) in Crassostrea brasiliana exposed to phenanthrene. Aquat Toxicol 2015; 169:79-89. [PMID: 26519834 DOI: 10.1016/j.aquatox.2015.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 06/27/2015] [Revised: 10/15/2015] [Accepted: 10/16/2015] [Indexed: 06/05/2023]
Abstract
Phenanthrene (PHE) is an abundant polycyclic aromatic hydrocarbon (PAH), widely distributed in aquatic environment. The aim of this study was to evaluate the histological and molecular effects in the native oyster Crassostrea brasiliana(Lamarck, 1819) exposed to 100 and 1000 μg L(-1) PHE for 1, 5 and 10 days. Histological and chemical analyses were performed to evaluate, respectively, alterations in oyster tissues and bioaccumulation. In situ hybridization (ISH) was used to assess tissue distribution of CYP2AU1, a gene formerly identified as activated by PHE exposure in this species.Quantitative polymerase chain reaction (qPCR) in mantle was carried out to validate ISH data. Oysters bioaccumulated PHE increasingly along the exposure period in both exposure concentrations. Histologic changes, like tubular atrophy in digestive diverticula (digestive gland) and increased number of mucous cells in the mantle were observed in animals exposed to PHE for 10 days. ISH showed the presence of CYP2AU1transcripts in gills, digestive diverticula, mantle, intestine and gonads, but significant differences in transcript detection by ISH between treatments occurred only in gills, mantle and intestine. A positive and significant correlation between tubular atrophy and CYP2AU1hybridization signal was observed in digestive diverticula, suggesting that this gene product might be involved in energetic metabolism in C. brasiliana. Increased mucous cells and CYP2AU1transcript levels were observed in the mantle, where the inner and middle lobes showed higher intensity of hybridization signal. Mantle should be considered as a target organ for CYP2AU1 transcript evaluation and histological alterations in biomonitoring studies. CYP2AU1 signal in female gonads was observed in all follicular cells from different gonadic stages, while in male only the spermatic follicle cells of the wall in the pre-spawning stage showed this signal. ISH was an effective technique to evaluate the effects of PHE exposure and to locate CYP2AU1 transcripts in different tissues of oyster C. brasiliana.
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Affiliation(s)
- Isis M M dos Reis
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil
| | - Jacó J Mattos
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil; Aquaculture Pathology Research Center-NEPAQ, Federal University of Santa Catarina, UFSC, Florianópolis, Brazil
| | - Ricardo C Garcez
- Laboratory of Stem Cells and Tissue Regeneration, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil
| | - Flávia L Zacchi
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil
| | - Talita Miguelão
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil
| | - Fabrício Flores-Nunes
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil
| | - Guilherme Toledo-Silva
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil
| | - Sílvio T Sasaki
- Laboratory of Marine Organic Chemistry-LABQOM, Oceanographic Institute, University of São Paulo, USP, São Paulo, São Paulo, Brazil
| | - Satie Taniguchi
- Laboratory of Marine Organic Chemistry-LABQOM, Oceanographic Institute, University of São Paulo, USP, São Paulo, São Paulo, Brazil
| | - Márcia C Bícego
- Laboratory of Marine Organic Chemistry-LABQOM, Oceanographic Institute, University of São Paulo, USP, São Paulo, São Paulo, Brazil
| | - Eduardo Cargnin-Ferreira
- Laboratory of Histological Markers, Federal Institute of Education Science and Technology of Santa Catarina, IFSC, Garopaba, Santa Catarina, Brazil
| | - Afonso C D Bainy
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, Santa Catarina, Brazil.
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Di Mascio P, Briviba K, Sasaki ST, Catalani LH, Medeiros MH, Bechara EJ, Sies H. The reaction of peroxynitrite with tert-butyl hydroperoxide produces singlet molecular oxygen. Biol Chem 1997; 378:1071-4. [PMID: 9348119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Peroxynitrite, a biological oxidant, can induce lipid peroxidation in biological membranes which leads to the formation of various hydroperoxides. Here, we report the formation of singlet oxygen (1O2) in the reaction of peroxynitrite with tert-butyl hydroperoxide (t-BOOH) used as a model compound for organic hydroperoxides. The formation of singlet oxygen was observed by (i) dimol emission in the red spectral region, (ii) monomol emission in the infrared region at 1270 nm and by (iii) chemical trapping of singlet oxygen with anthracene-9,10-diyldiethyl disulfate (EAS). The emission signal was increased when H2O was replaced by deuterium oxide and was quenched by sodium azide. When singlet oxygen was generated in the reaction of peroxynitrite with t-BOOH, the 1O2 quenching rate constant for sodium azide was estimated from a Stern-Volmer plot as 1.3 x 10(8) M(-1) S(-1) which is in line with known values. The 1O2 generation in the peroxynitrite/t-BOOH reaction was also detected by the formation of the endoperoxide of EAS. These data establish the generation of 1O2 in the reaction of peroxynitrite with t-BOOH and suggest a potential involvement of 1O2 in peroxynitrite-mediated reactions in biological systems.
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Affiliation(s)
- P Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, SP, Brazil
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