IBIMOL   23987
INSTITUTO DE BIOQUIMICA Y MEDICINA MOLECULAR PROFESOR ALBERTO BOVERIS
Unidad Ejecutora - UE
artículos
Título:
Redox profile in liver of Leporinus macrocephalus exposed to different dissolved oxygen levels.
Autor/es:
RIFFEL AP; GARCIA LO; FINAMOR IA; SACCOL EM; MEIRA M; KOLBERG C; HORST A; PARTATA W; LLESUY S; BALDISSEROTTO B; PAVANATO MA
Revista:
FISH PHYSIOLOGY AND BIOCHEMISTRY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2011 p. 10 - 19
ISSN:
0920-1742
Resumen:
Aquatic organisms are continuously exposed to environmental variations, which can lead to physiological and biochemical alterations. Leporinus macrocephalus, known as piavuçu, is a migratory species that may be exposed to variations in dissolved oxygen levels. Studies evaluating oxidative changes undergone by this species in these conditions are scarce. Therefore, this investigation aimed at evaluating oxidative alterations in L. macrocephalus exposed to different oxygen levels for 96 h: 6.12 ± 0.18, 3.99 ± 0.17, 3.22 ± 0.17, 2.47 ± 0.30 and 0.710 ± 0.07 mg L(-1). At the end of the experimental period, fish were euthanized and livers used to determine lipid hydroperoxides, thiobarbituric acid reactive substances, catalase, glutathione-S-transferase, superoxide dismutase and thiol groups, which are an indirect measure of reduced glutathione. Results indicated a decrease in the studied parameters in hypoxic situations, suggesting a possible metabolic depression.