Oxidants and antioxidants in aquatic animals |
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| Affiliation: | 1. SLRC-Sea Lice Research Centre, Department of Biology, University of Bergen, Thormøhlensgt. 55, 5008, Bergen, Norway;2. Leibniz Institute for Farm Animal Biology (FBN), Institute of Genome Biology, Wilhelm-Stahl-Allee 2, 18196, Dummerstorf, Germany;1. SLCR-Sea Lice Research Center, Institute of Marine Research, 5817 Bergen, Norway;2. SLCR-Sea Lice Research Center, Department of Biology, University of Bergen, Thormøhlensgt. 55, 5008 Bergen, Norway;1. Centre for the Research and Technology of Agro-Environmental and Biological Sciences — CITAB, University of Trás-os-Montes and Alto Douro — UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal;2. Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Rua dos Bragas 289, 4050-123 Porto, Portugal |
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| Abstract: | ![]()
- 1.1. Oxidative stress, potentially, is experienced by all aerobic life when antioxidant defenses are overcome by prooxidant forces, and is the basis of many physiological abberations.
- 2.2. Environmental contaminants may enhance oxidative stress in aquatic organisms, e.g. highly elevated rates of ideopathic lesions and neoplasia among fish inhabiting polluted environments is increasingly related to oxidative stress associated with environmental pollution.
- 3.3. Metabolism of redox cycling xenobiotics in aquatic organisms is very similar to that of mammals suggesting similarities in the health consequences of exposure to such compounds.
- 4.4. The expression of specific lesions known to arise specifically from oxidative stress, e.g. lipid peroxidation, oxidized bases in DNA and accumulation of lipofuscin pigments are present in many aquatic animals exposed to contaminants.
- 5.5. Aquatic organisms contain the major antioxidant enzymes SOD, catalase and glutathione peroxidase, albeit there are marked quantitative differences among the various species reported.
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