Oxidative stress indicators and trace element concentrations in tissues of mako shark (Isurus oxyrinchus)
Article
-
- Overview
-
- Research
-
- Identity
-
- Additional Document Info
-
- View All
-
Overview
abstract
-
Liver, kidney and muscle from juvenile mako sharks (Isurus oxyrinchus) were collected in Baja California Sur. Lead (Pb), cadmium (Cd), mercury (Hg) and arsenic (As) concentrations were determined by atomic absorption spectrophotometry. The production of superoxide radical (O2•-) was measured as an indicator of reactive oxygen species production; lipid peroxidation (TBARS) and protein carbonyl levels were quantified as indicators of oxidative damage, and the activity of the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione-S-transferase (GST) was assessed as indicator of antioxidant defenses. Two discriminant functions separated muscle from liver and kidney samples. Cd concentration was lower in muscle than in kidney (p<0.05) and Hg concentration was higher in muscle than in liver and kidney (p<0.05). Although GR and SOD activities were higher, oxidative damage (TBARS and carbonyl protein levels) was also higher in kidney (p<0.05). SOD activity, TBARS levels, and Cd and Hg concentration were the set of predictors with significant relevance during tissue discrimination. Tissue metabolism, physiology of the organisms and environmental factors may be related to the differences in trace elements and oxidative stress indicators found in muscle, liver and kidney of the mako shark. © 2013 Elsevier Inc.
publication date
funding provided via
published in
Research
keywords
-
Antioxidants; Ecotoxicology; Mako shark; Metals; Oxidative damage arsenic; cadmium; catalase; glutathione reductase; glutathione transferase; lead; mercury; protein; reactive oxygen metabolite; superoxide; superoxide dismutase; thiobarbituric acid reactive substance; antioxidant; arsenic; catalase; superoxide dismutase; trace element; water pollutant; arsenic; trace element; animal tissue; article; atomic absorption spectrometry; enzyme activity; female; kidney parenchyma; lipid peroxidation; liver; male; muscle tissue; nonhuman; oxidative stress; protein carbonylation; protein content; shark; tissue metabolism; animal; drug effects; environmental monitoring; enzymology; kidney; metabolism; oxidative stress; shark; toxicity; water pollutant; drug effect; water pollutant; Chondrichthyes; Isurus oxyrinchus; Animals; Antioxidants; Arsenic; Catalase; Environmental Monitoring; Kidney; Lipid Peroxidation; Liver; Oxidative Stress; Sharks; Superoxide Dismutase; Thiobarbituric Acid Reactive Substances; Trace Elements; Water Pollutants, Chemical; Animals; Antioxidants; Arsenic; Catalase; Environmental Monitoring; Kidney; Lipid Peroxidation; Liver; Oxidative Stress; Sharks; Superoxide Dismutase; Thiobarbituric Acid Reactive Substances; Trace Elements; Water Pollutants, Chemical
Identity
Digital Object Identifier (DOI)
PubMed ID
Additional Document Info
start page
end page
volume
issue