Results 141 to 150 of about 1,220 (156)

Characterization of ethoxyresorufin O-deethylase activity (EROD) in oyster Crassostrea brasiliana

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2017
Cytochrome P450 family 1 (CYP1) is involved in polycyclic aromatic hydrocarbons (PAHs) biotransformation. PAHs can induce CYP1 protein expression and enzyme activity, the latter being usually quantified as 7-ethoxyresorufin O-deethylase activity (EROD).
Marilia N, Siebert, Jacó J, Mattos, Clei E, Piazza, Daína, de Lima, Carlos Henrique A M, Gomes, Cláudio M R, de Melo, Afonso C D, Bainy   +6 more
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Transcriptional changes in oysters Crassostrea brasiliana exposed to phenanthrene at different salinities

Aquatic Toxicology, 2017
Euryhaline animals from estuaries, such as the oyster Crassostrea brasiliana, show physiological mechanisms of adaptation to tolerate salinity changes. These ecosystems receive constant input of xenobiotics from urban areas, including polycyclic aromatic hydrocarbons (PAHs), such as phenanthrene (PHE).
Flávia Lucena, Zacchi, Daína, de Lima, Fabrício, Flores-Nunes, Jacó Joaquim, Mattos, Karim Hahn, Lüchmann, Carlos Henrique Araújo, de Miranda Gomes, Márcia Caruso, Bícego, Satie, Taniguchi, Silvio Tarou, Sasaki, Afonso Celso, Dias Bainy   +9 more
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Condition index, meat yield and biochemical composition of Crassostrea brasiliana and Crassostrea gigas grown in Cabo Frio, Brazil

Aquaculture, 1986
Abstract Samples of tray-grown Crassostrea gigas from imported seed and of the closely related Crassostrea brasiliana from a local natural population in tropical waters of Brazil were examined monthly during a 4-year period. Parameters of condition, including the condition index, wet meat yield and gross biochemical composition, were determined ...
Elizabeth Costa Muniz, Salvador Abdalla Jacob, M.M. Helm   +2 more
openaire   +1 more source

Analysis of transcriptional responses of normalizing genes on Crassostrea brasiliana under different experimental conditions

Environmental Toxicology and Chemistry, 2017
Abstract   Bivalves show remarkable plasticity to environmental changes and have been proposed as sentinel organisms in biomonitoring. Studies related to transcriptional analysis using quantitative real-time polymerase chain reaction (qRT-PCR) in these organisms have notably increased, imposing a need
Gabrielle do Amaral E Silva, Müller, Daína, de Lima, Flávia Lucena, Zacchi, Rômi Sharon, Piazza, Karim Hahn, Lüchmann, Jacó Joaquim, Mattos, Daniel, Schlenk, Afonso Celso Dias, Bainy   +7 more
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Histological responses and localization of the cytochrome P450 (CYP2AU1) in Crassostrea brasiliana exposed to phenanthrene

Aquatic Toxicology, 2015
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.
Isis M.M. dos Reis, Jacó J. Mattos, Ricardo C. Garcez, Flávia L. Zacchi, Talita Miguelão, Fabrício Flores-Nunes, Guilherme Toledo-Silva, Sílvio T. Sasaki, Satie Taniguchi, Márcia C. Bícego, Eduardo Cargnin-Ferreira, Afonso C.D. Bainy   +11 more
openaire   +2 more sources

Biochemical and molecular responses in oysters Crassostrea brasiliana collected from estuarine aquaculture areas in Southern Brazil

Marine Pollution Bulletin, 2018
Biochemical and molecular responses were evaluated in oysters Crassostrea brasiliana collected from three oyster farms, at Guaratuba Bay, southern Brazil, forming a pollutant gradient: Farm 1 (reference site - farther from the urban area), Farm 2 (intermediate site) and Farm 3 (nearest to the urban area).
Flávia Lucena Zacchi, Fabrício Flores-Nunes, Jacó Joaquim Mattos, Daína Lima, Karim Hahn Lüchmann, Silvio Tarou Sasaki, Márcia Caruso Bícego, Satie Taniguchi, Rosalinda Carmela Montone, Eduardo Alves de Almeida, Afonso Celso Dias Bainy   +10 more
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Pathogenic bacteria associated with oysters (Crassostrea brasiliana) and estuarine water along the south coast of Brazil

International Journal of Environmental Health Research, 2007
Oysters and estuarine water samples were collected monthly, from June 1998 to March 1999, in the Cananéia estuary, on the south coast of São Paulo, Brazil, and analyzed for bacterial hazards with and without depuration in filtered estuarine water.
Christiane A, Ristori, Sebastião T, Iaria, Dilma S, Gelli, Irma N G, Rivera   +3 more
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Concentration of polycyclic aromatic hydrocarbons (PAHs) and histological changes in Anomalocardia brasiliana and Crassostrea rhizophorae from Pernambuco, Brazil after the 2019 oil spill

Marine Pollution Bulletin, 2023
The present study aimed to analyze the concentrations of polycyclic aromatic hydrocarbons (PAHs) in populations of the shellfish Anomalocardia brasiliana and oysters Crassostrea rhizophorae three years after the 2019 oil spill, as well as evaluate histopathological changes on the gill tissues of the bivalves. Individuals of both species were sampled at
Gisely Karla de Almeida, Costa, Scarlatt Paloma Alves, da Silva, Maria Raissa Coelho Marchetti, Trindade, Fernando Leandro Dos, Santos, Renato S, Carreira, Carlos G, Massone, Otoniel D, Sant'Ana, Suzianny Maria Bezerra Cabral, da Silva   +7 more
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Biochemical biomarkers and hydrocarbons concentrations in the mangrove oyster Crassostrea brasiliana following exposure to diesel fuel water-accommodated fraction

Aquatic Toxicology, 2011
Understanding the toxic mechanisms by which organisms cope to environmental stressful conditions is a fundamental question for ecotoxicology. In this study, we evaluated biochemical responses and hydrocarbons bioaccumulation of the mangrove oyster Crassostrea brasiliana exposed for 96 h to four sublethal concentrations of diesel fuel water-accommodated
Karim H, Lüchmann, Jacó J, Mattos, Marília N, Siebert, Ninna, Granucci, Tarquin S, Dorrington, Márcia C, Bícego, Satie, Taniguchi, Silvio T, Sasaki, Fábio G, Daura-Jorge, Afonso C D, Bainy   +9 more
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Thiol oxidation of hemolymph proteins in oysters Crassostrea brasiliana as markers of oxidative damage induced by urban sewage exposure

Environmental Toxicology and Chemistry, 2016
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
Rafael, Trevisan, Fabrício, Flores-Nunes, Euler S, Dolores, Jacó J, Mattos, Clei E, Piazza, Sílvio T, Sasaki, Satie, Taniguchi, Rosalinda C, Montone, Márcia C, Bícego, Isis M M, Dos Reis, Flávia L, Zacchi, Bárbara N M, Othero, Camila L V, Bastolla, Danielle F, Mello, Ana Paula M, Fraga, Nestor, Wendt, Guilherme, Toledo-Silva, Guilherme, Razzera, Alcir L, Dafre, Cláudio M R, de Melo, Adalto, Bianchini, Maria R F, Marques, Afonso C D, Bainy   +22 more
openaire   +2 more sources