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Registro Completo |
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
13/03/2014 |
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Data da última atualização: |
20/03/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ASSIS, H. C. S. de; SILVA, C. A. da; OBA, E. T.; PAMPLONA, J. H.; MELA, M.; DORIA, H. B.; GUILOSKI, I. C.; RAMSDORF, W.; CESTARI, M. M. |
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Afiliação: |
ELIANE TIE OBA YOSHIOKA, CPAF-AP. |
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Título: |
Hematologic and hepatic responses of the freshwater fish Hoplias malabaricus after saxitoxin exposure. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Toxicon, Oxford, v. 66, p. 25-30, 2013. |
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DOI: |
10.1016/j.toxicon.2013.01.012. |
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Idioma: |
Inglês |
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Conteúdo: |
The bioaccumulation of saxitoxins (STX) in the trophic chain, mainly in freshwater, are not completely known. This work aimed to elucidate the effects of STX on Hoplias malabaricus through trophic bioassay. The fish were fed once every five days with Astyanax sp. before being subjected to an intraperitoneal inoculation with the lysate of Cylindrospermopsis raciborskii culture containing 97% STX and 3% by neosaxitoxin and gonyautoxin during 20 days. The animal?s liver was assessed using biomarkers as activities of superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and glutathione peroxidase (GPx), and concentrations of reduced glutathione (GSH) and lipoperoxidation (LPO) and protein carbonylation (PCO). In the blood was analyzed the genotoxic and hematological parameters. The hepatosomatic index and the relative condition factor did not show a significant difference between the exposed and control groups. The values of mean corpuscular hemoglobin concentration and mean corpuscular hemoglobin increased in the STX group. The hepatic tissue from both groups exhibited a typical pattern that have been already described for most teleost fish. The results suggested the generation of reactive oxygen species, with increased activity of GPx and concentrations of LPO and GSH; whereas the specific activity of SOD decreased. However, no changes were observed in the CAT, PCO, and DNA damage. Although the STX effects are known as neurotoxic, this cyanotoxin caused liver biochemical alterations that can be considered ecologically relevant. MenosThe bioaccumulation of saxitoxins (STX) in the trophic chain, mainly in freshwater, are not completely known. This work aimed to elucidate the effects of STX on Hoplias malabaricus through trophic bioassay. The fish were fed once every five days with Astyanax sp. before being subjected to an intraperitoneal inoculation with the lysate of Cylindrospermopsis raciborskii culture containing 97% STX and 3% by neosaxitoxin and gonyautoxin during 20 days. The animal?s liver was assessed using biomarkers as activities of superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and glutathione peroxidase (GPx), and concentrations of reduced glutathione (GSH) and lipoperoxidation (LPO) and protein carbonylation (PCO). In the blood was analyzed the genotoxic and hematological parameters. The hepatosomatic index and the relative condition factor did not show a significant difference between the exposed and control groups. The values of mean corpuscular hemoglobin concentration and mean corpuscular hemoglobin increased in the STX group. The hepatic tissue from both groups exhibited a typical pattern that have been already described for most teleost fish. The results suggested the generation of reactive oxygen species, with increased activity of GPx and concentrations of LPO and GSH; whereas the specific activity of SOD decreased. However, no changes were observed in the CAT, PCO, and DNA damage. Although the STX effects are known as neurotoxic, this cyanotoxin caused ... Mostrar Tudo |
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Palavras-Chave: |
Cianotoxina; Cyanotoxin; Eutroficação; Genotoxicidade; Paralytic shellfish poison. |
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Thesagro: |
Peixe de água doce. |
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Thesaurus Nal: |
eutrophication; freshwater fish; genotoxicity. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/99078/1/CPAF-AP-2013-Hematologic-and-hepatic.pdf
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Marc: |
LEADER 02544naa a2200337 a 4500
001 1982178
005 2017-03-20
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1016/j.toxicon.2013.01.012.$2DOI
100 1 $aASSIS, H. C. S. de
245 $aHematologic and hepatic responses of the freshwater fish Hoplias malabaricus after saxitoxin exposure.$h[electronic resource]
260 $c2013
520 $aThe bioaccumulation of saxitoxins (STX) in the trophic chain, mainly in freshwater, are not completely known. This work aimed to elucidate the effects of STX on Hoplias malabaricus through trophic bioassay. The fish were fed once every five days with Astyanax sp. before being subjected to an intraperitoneal inoculation with the lysate of Cylindrospermopsis raciborskii culture containing 97% STX and 3% by neosaxitoxin and gonyautoxin during 20 days. The animal?s liver was assessed using biomarkers as activities of superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST), and glutathione peroxidase (GPx), and concentrations of reduced glutathione (GSH) and lipoperoxidation (LPO) and protein carbonylation (PCO). In the blood was analyzed the genotoxic and hematological parameters. The hepatosomatic index and the relative condition factor did not show a significant difference between the exposed and control groups. The values of mean corpuscular hemoglobin concentration and mean corpuscular hemoglobin increased in the STX group. The hepatic tissue from both groups exhibited a typical pattern that have been already described for most teleost fish. The results suggested the generation of reactive oxygen species, with increased activity of GPx and concentrations of LPO and GSH; whereas the specific activity of SOD decreased. However, no changes were observed in the CAT, PCO, and DNA damage. Although the STX effects are known as neurotoxic, this cyanotoxin caused liver biochemical alterations that can be considered ecologically relevant.
650 $aeutrophication
650 $afreshwater fish
650 $agenotoxicity
650 $aPeixe de água doce
653 $aCianotoxina
653 $aCyanotoxin
653 $aEutroficação
653 $aGenotoxicidade
653 $aParalytic shellfish poison
700 1 $aSILVA, C. A. da
700 1 $aOBA, E. T.
700 1 $aPAMPLONA, J. H.
700 1 $aMELA, M.
700 1 $aDORIA, H. B.
700 1 $aGUILOSKI, I. C.
700 1 $aRAMSDORF, W.
700 1 $aCESTARI, M. M.
773 $tToxicon, Oxford$gv. 66, p. 25-30, 2013.
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Registro original: |
Embrapa Amapá (CPAF-AP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
26/01/2015 |
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Data da última atualização: |
14/03/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
FREITAS, E. C.; AMARAL, D. S. S. L.; HARWOOD, J. D.; SUJII, E. R.; VENZON, M. |
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Afiliação: |
ERICKSON C. FREITAS, UFV; DANY S. S. L. AMARAL, UFV; JAMES D. HARWOOD, UNIVERSITY OF KENTUCKY; EDISON RYOITI SUJII, CENARGEN; MADELAINE VENZON, EPAMIG/URZM. |
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Título: |
A abundância e distribuição espaço-temporal de artrópodes predadores em pimenta-malagueta são afetadas pelo manejo de plantas espontâneas. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 25., 2014, Goiânia. Entomologia integrada à sociedade para o desenvolvimento sustentável: anais. Goiânia: Sociedade Entomológica do Brasil, 2014. Resumo 0134 |
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Idioma: |
Português |
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Palavras-Chave: |
Controle biológico conservativo; Padrões espaciais; SADIE. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/116435/1/resumo-0134.pdf
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Marc: |
LEADER 00793nam a2200181 a 4500
001 2006615
005 2023-03-14
008 2014 bl uuuu u00u1 u #d
100 1 $aFREITAS, E. C.
245 $aA abundância e distribuição espaço-temporal de artrópodes predadores em pimenta-malagueta são afetadas pelo manejo de plantas espontâneas.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 25., 2014, Goiânia. Entomologia integrada à sociedade para o desenvolvimento sustentável: anais. Goiânia: Sociedade Entomológica do Brasil, 2014. Resumo 0134$c2014
653 $aControle biológico conservativo
653 $aPadrões espaciais
653 $aSADIE
700 1 $aAMARAL, D. S. S. L.
700 1 $aHARWOOD, J. D.
700 1 $aSUJII, E. R.
700 1 $aVENZON, M.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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