Artículo
Humic acid and moderate hypoxia alter oxidative and physiological parameters in different tissues of silver catfish (Rhamdia quelen)
Riffel, Ana P. K.; Saccol, Etiane M. H.; Finamor, Isabela A.; Ourique, Giovana M.; Gressler, Luciane T.; Parodi, Thaylise V.; Goulart, Luis O. R.
; Llesuy, Susana Francisca
; Baldisserotto, Bernardo; Pavanato, María A.
Fecha de publicación:
02/2014
Editorial:
Springer Heidelberg
Revista:
Journal of Comparative Physiology B: Biochemical, Systems and Environmental Physiology
ISSN:
0174-1578
e-ISSN:
1432-136X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Aquatic animals are naturally exposed simultaneously to environments with different concentrations of humic acid (HA) and seasonal or daily variations of dissolved oxygen (DO) levels. This study investigated the effects of simultaneous exposure to different HA and DO levels on plasma ion levels and some hematological and oxidative parameters in different tissues of silver catfish (Rhamdia quelen). The fish were exposed to 0, 2.5 or 5 mg L(-1) HA for 120 h. After this period, each group was divided into two groups: normoxia and hypoxia. Exposure to the different DO levels lasted 96 h, totaling 216 h of experimentation. At the end of the experimental period, blood sampling was performed, and the fish were euthanized prior to the excision of the gills and the brain to evaluate hematological and oxidative parameters. To verify the antioxidant capacity of HA, total phenolic compounds were measured. In general, all tissues of silver catfish exposed simultaneously to hypoxia and different HA concentrations showed a reduction in lipid peroxidation levels, as well as a modulation of the antioxidant system. These effects occurred in an HA concentration-dependent manner. Thus, HA is beneficial to silver catfish exposed to hypoxia. These beneficial effects can be attributed, most likely, to the action of the different HA constituents and functional groups, including phenolic compounds, which have antioxidant properties.
Palabras clave:
Fish
,
Humic Acid
,
Oxidative Parameters
,
Oxygen Levels
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Identificadores
Colecciones
Articulos(IBIMOL)
Articulos de INSTITUTO DE BIOQUIMICA Y MEDICINA MOLECULAR
Articulos de INSTITUTO DE BIOQUIMICA Y MEDICINA MOLECULAR
Citación
Riffel, Ana P. K.; Saccol, Etiane M. H.; Finamor, Isabela A.; Ourique, Giovana M.; Gressler, Luciane T.; et al.; Humic acid and moderate hypoxia alter oxidative and physiological parameters in different tissues of silver catfish (Rhamdia quelen); Springer Heidelberg; Journal of Comparative Physiology B: Biochemical, Systems and Environmental Physiology; 184; 4; 2-2014; 469-482
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