Stress-induced changes of plasma antioxidants in aquacultured sea bass, Dicentrarchus labrax

Antioxidant plasma activities of ascorbate, α-tocopherol and glutathione peroxidase were analysed in adult male sea bass, Dicentrarchus labrax, in normal conditions and after hypoxia-recovery. In addition, tank measurements of temperature, pH, salinity and chlorine changes were carried out. Ascorbat...

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Bibliographic Details
Published in:Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Molecular & integrative physiology, 2002-05, Vol.132 (1), p.205-211
Main Authors: Guerriero, Giulia, Di Finizio, Alessandra, Ciarcia, Gaetano
Format: Article
Language:English
Subjects:
alpha-Tocopherol - blood
Animals
Antioxidants - analysis
Aquaculture
Ascorbate
Ascorbic Acid - blood
Bass - blood
Body mass
Body Weight
Chlorine
Chlorine - analysis
Chromatography, High Pressure Liquid
Dicentrarchus labrax
Glutathione peroxidase
Glutathione Peroxidase - blood
HPLC
Hydrogen-Ion Concentration
Hypoxia
Hypoxia - blood
Male
Marine
Osmolar Concentration
Salinity
Seawater - chemistry
Stress, Physiological - blood
Stress, Physiological - physiopathology
Temperature
α-Tocopherol
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Summary:Antioxidant plasma activities of ascorbate, α-tocopherol and glutathione peroxidase were analysed in adult male sea bass, Dicentrarchus labrax, in normal conditions and after hypoxia-recovery. In addition, tank measurements of temperature, pH, salinity and chlorine changes were carried out. Ascorbate and α-tocopherol were measured using a high-pressure liquid chromatography method and glutathione peroxidase activity enzymatically. Ascorbate and α-tocopherol showed a relationship with the velocity of body growing in normal and hypoxia-recovery conditions. In sea bass exposed to hypoxia, only ascorbate and α-tocopherol levels were significantly lower compared with the control group. Slope study and expression percent of antioxidants reduction after stress conditions revealed a predominant role of plasma α-tocopherol. Sea bass subjected to variations of salinity and chlorine showed a significant decrease in plasma α-tocopherol. A relationship could be suggested between antioxidant defence and fish response in aquaculture.
ISSN:1095-6433
1531-4332
DOI:10.1016/S1095-6433(01)00549-9