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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Meio Ambiente; Embrapa Pesca e Aquicultura. |
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Data corrente: |
13/09/2012 |
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Data da última atualização: |
11/03/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SAMPAIO, F. G.; BOIJINK, C. de L.; SANTOS, L. R. B. dos; OBA, E. T.; KALININ, A. L.; LUIZ, A. J. B.; RANTIN, F. T. |
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Afiliação: |
FERNANDA GARCIA SAMPAIO, CNPASA; CHEILA DE LIMA BOIJINK, CPAA; Laila Romagueira Bichara dos Santos, USP; ELIANE TIE OBA YOSHIOKA, CPAF-AP; Ana Lúcia Kalinin, FAPESP; ALFREDO JOSE BARRETO LUIZ, CNPMA; Francisco Tadeu Rantin, FAPESP. |
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Título: |
Antioxidant defenses and biochemical changes in the neotropical fish pacu, Piaractus mesopotamicus: responses to single and combined copper and hypercarbia exposure. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Comparative Biochemistry and Physiology, Part C, New York, v. 156, n. 3-4, p. 178-186, 2012. |
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DOI: |
10.1016/j.cbpc.2012.07.002 |
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Idioma: |
Inglês |
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Conteúdo: |
This study investigated the potentially detrimental effects of copper and elevated aquatic CO2 (hypercarbia), alone or in combination, on pacu, Piaractus mesopotamicus. Fish were exposed for 48 h to control (no copper 2+ ?1addition in normocarbia), to 400 ?g Cu L , to hypercarbic (1% CO2; PCO2 = 6.9 mm Hg) water and to 400 ?g Cu2+L?1 +hypercarbia. In liver the single factors caused an increase in lipid hydroperoxide concen- tration that was not observed when the factors were combined. Copper exposure elicited increased hepatic superoxide dismutase activity, irrespective of aquatic CO2 level. On the other hand, the effects of copper on hepatic glutathione peroxidase activity were dependent on water CO2 levels. The two stressors combined did not affect hepatic catalase activity. Hypercarbic water caused a decline in plasma glucose concentration, but this was not observed when hypercarbia was combined with copper exposure. Copper caused a decrease in branchial Na+/K+-ATPase activity that was independent of water CO2 level. Copper caused an increase in branchial metallothionein concentration that was independent of water CO2 level. Thus, branchial metallothionein and Na+/K+ -ATPase were effective biomarkers of copper exposure that were not af- fected by water CO2 level. |
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Palavras-Chave: |
Antioxidantes. |
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Thesagro: |
Cobre; Dióxido de carbono; Pacu; Toxidez. |
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Thesaurus NAL: |
Antioxidant activity; Carbon dioxide; Copper; Ecotoxicology; Fish; Resistance mechanisms. |
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Categoria do assunto: |
--
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02342naa a2200337 a 4500
001 1952678
005 2013-03-11
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1016/j.cbpc.2012.07.002$2DOI
100 1 $aSAMPAIO, F. G.
245 $aAntioxidant defenses and biochemical changes in the neotropical fish pacu, Piaractus mesopotamicus$bresponses to single and combined copper and hypercarbia exposure.$h[electronic resource]
260 $c2012
520 $aThis study investigated the potentially detrimental effects of copper and elevated aquatic CO2 (hypercarbia), alone or in combination, on pacu, Piaractus mesopotamicus. Fish were exposed for 48 h to control (no copper 2+ ?1addition in normocarbia), to 400 ?g Cu L , to hypercarbic (1% CO2; PCO2 = 6.9 mm Hg) water and to 400 ?g Cu2+L?1 +hypercarbia. In liver the single factors caused an increase in lipid hydroperoxide concen- tration that was not observed when the factors were combined. Copper exposure elicited increased hepatic superoxide dismutase activity, irrespective of aquatic CO2 level. On the other hand, the effects of copper on hepatic glutathione peroxidase activity were dependent on water CO2 levels. The two stressors combined did not affect hepatic catalase activity. Hypercarbic water caused a decline in plasma glucose concentration, but this was not observed when hypercarbia was combined with copper exposure. Copper caused a decrease in branchial Na+/K+-ATPase activity that was independent of water CO2 level. Copper caused an increase in branchial metallothionein concentration that was independent of water CO2 level. Thus, branchial metallothionein and Na+/K+ -ATPase were effective biomarkers of copper exposure that were not af- fected by water CO2 level.
650 $aAntioxidant activity
650 $aCarbon dioxide
650 $aCopper
650 $aEcotoxicology
650 $aFish
650 $aResistance mechanisms
650 $aCobre
650 $aDióxido de carbono
650 $aPacu
650 $aToxidez
653 $aAntioxidantes
700 1 $aBOIJINK, C. de L.
700 1 $aSANTOS, L. R. B. dos
700 1 $aOBA, E. T.
700 1 $aKALININ, A. L.
700 1 $aLUIZ, A. J. B.
700 1 $aRANTIN, F. T.
773 $tComparative Biochemistry and Physiology, Part C, New York$gv. 156, n. 3-4, p. 178-186, 2012.
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Embrapa Pesca e Aquicultura (CNPASA) |
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