NDLI: Mercury and selenium concentrations in skeletal muscle, liver, and regions of the heart and kidney in bearded seals from Alaska, USA.

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Mercury and selenium concentrations in skeletal muscle, liver, and regions of the heart and kidney in bearded seals from Alaska, USA.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Correa, Lucero Castellini, J. Margaret Quakenbush, Lori T. O'Hara, Todd M.
Spatial Coverage	Alaska
Description	Country affiliation: United States Author Affiliation: Correa L ( Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, Alaska, USA.); Castellini JM ( School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, Alaska, USA.); Quakenbush LT ( Alaska Department of Fish and Game, Fairbanks, Alaska, USA.); O'Hara TM ( Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, Alaska, USA.)
Abstract	Mean concentrations of total mercury ([THg]) and selenium ([TSe]) (mass and molar-based) were determined for 5 regions of the heart and 2 regions of the kidney of bearded seals (Erignathus barbatus) harvested in Alaska, USA, in 2010 and 2011. Mean [THg] and [TSe] of bearded seal liver and skeletal muscle tissues were used for intertissular comparison. The Se:Hg molar ratios were used to investigate elemental associations and potential antioxidant protection against Hg toxicosis. Age was an important factor in [THg] and Se:Hg molar ratios in heart and kidney. Small but statistically significant differences in mean [THg] occurred among some of the 5 heart regions (p < 0.05). Mean [THg] was highest in liver, 3.057 µg/g, and lowest in heart left ventricle, 0.017 µg/g. Mean [THg] ranked: liver > kidney cortex > kidney medulla > skeletal muscle > heart left ventricle (p < 0.001). Mean [TSe] was highest in liver, 3.848 µg/g, and lowest in heart left ventricle, 0.632 µg/g. Mean [TSe] ranked: liver > kidney cortex > kidney medulla > skeletal muscle > heart left ventricle (p < 0.001). The Se:Hg molar ratios were significantly greater than 1.0 in all tissues (p < 0.001) and represented baselines for normal [TSe] under relatively low [THg]. Mean Se:Hg molar ratios ranked: heart left ventricle > kidney medulla > kidney cortex (p < 0.001).
File Format	HTM / HTML
ISSN	07307268
Issue Number	10
Volume Number	34
e-ISSN	15528618
Journal	Environmental Toxicology and Chemistry
Language	English
Publisher	Wiley
Publisher Date	2015-10-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hair Water Pollutants, Chemical Research Support, Non-u.s. Gov't Environmental Monitoring Age Factors Discipline Environmental Health Liver Discipline Toxicology Male Metabolism Kidney Journal Article Chemistry Animals Analysis Myocardium Discipline Chemistry Alaska Female Muscle, Skeletal Selenium Mercury Seals, Earless
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis

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