Oxidative stress indicators and trace elements in the blue shark (Prionace glauca) off the east coast of the Mexican Pacific Ocean

Trace element concentrations and oxidative stress indicators (including production of reactive oxygen species (ROS), antioxidant enzyme activities and oxidative damage) were measured in muscle of blue sharks collected along the west coast of Baja California Sur to determine potential differences by...

Full description

Saved in:
Bibliographic Details
Published in:Comparative biochemistry and physiology. Toxicology & pharmacology 2012-08, Vol.156 (2), p.59-66
Main Authors: Barrera-García, Angélica, O'Hara, Todd, Galván-Magaña, Felipe, Méndez-Rodríguez, Lía C., Castellini, J. Margaret, Zenteno-Savín, Tania
Format: Article
Language:English
Subjects:
Age Factors
Animals
Antioxidants - metabolism
Blue shark
Cadmium - metabolism
Environmental Monitoring - methods
Enzyme Activation
Female
Male
Maturity status
Mercury - metabolism
Mexico
Muscle, Skeletal - metabolism
Oxidative Stress
Pacific Ocean
Principal Component Analysis
Protein Carbonylation
Reactive Oxygen Species - metabolism
Sex differences
Sex Factors
Sharks - metabolism
Trace elements
Trace Elements - metabolism
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Trace element concentrations and oxidative stress indicators (including production of reactive oxygen species (ROS), antioxidant enzyme activities and oxidative damage) were measured in muscle of blue sharks collected along the west coast of Baja California Sur to determine potential differences by sex and maturity cohorts. Mercury (Hg) concentration in muscle samples from larger sharks (>200cm LT) exceeded the permissible limit (>1ppm wet weight) for human consumption set by numerous international agencies. Significant differences were found in Hg concentrations (mature>immature; males>females), and in protein carbonyl concentrations (male>female); however, except for carbonyl protein levels, no significant differences by sex or maturity stage were found in the oxidative stress indicators. Differences between sexes and maturity stages in trace element concentration and carbonyl protein levels in blue shark muscle may be related to variations in diet within different cohorts.
ISSN:1532-0456
1878-1659
DOI:10.1016/j.cbpc.2012.04.003