Registro Completo |
Biblioteca(s): |
Embrapa Amapá. |
Data corrente: |
27/01/2022 |
Data da última atualização: |
28/01/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
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. |
Título: |
Antioxidant defenses and biochemical changes in the neotropical fish pacu, Piaractus mesopotamicus: responses to single and combined copper and hypercarbia exposure. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Comparative Biochemistry and Physiology, Part C, New York, v. 156, n. 3-4, p. 178-186, 2012. |
DOI: |
10.1016/j.cbpc.2012.07.002 |
Idioma: |
Inglês |
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 concentration 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 affected by water CO2 level. |
Palavras-Chave: |
Antioxidantes. |
Thesagro: |
Cobre; Dióxido de carbono; Pacu; Toxidez. |
Thesaurus Nal: |
Antioxidant activity; Carbon dioxide; Copper; Ecotoxicology; Fish; Resistance mechanisms. |
Categoria do assunto: |
S Ciências Biológicas |
Marc: |
LEADER 02338naa a2200337 a 4500 001 2139391 005 2022-01-28 008 2012 bl --- 0-- 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 concentration 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 affected 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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Registro original: |
Embrapa Amapá (CPAF-AP) |
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