Mercury and selenium concentrations in skeletal muscle, liver, and regions of the heart and kidney in bearded seals from Alaska, USA
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 m...
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| Veröffentlicht in: | Environmental toxicology and chemistry 2015-10, Vol.34 (10), p.2403-2408 |
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| description | 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). Environ Toxicol Chem 2015;34:2403–2408. © 2015 SETAC |
| doi_str_mv | 10.1002/etc.3079 |
| format | Article |
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Margaret ; Quakenbush, Lori T. ; O'Hara, Todd M.</creator><creatorcontrib>Correa, Lucero ; Castellini, J. Margaret ; Quakenbush, Lori T. ; O'Hara, Todd M.</creatorcontrib><description>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). 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Margaret</creatorcontrib><creatorcontrib>Quakenbush, Lori T.</creatorcontrib><creatorcontrib>O'Hara, Todd M.</creatorcontrib><title>Mercury and selenium concentrations in skeletal muscle, liver, and regions of the heart and kidney in bearded seals from Alaska, USA</title><title>Environmental toxicology and chemistry</title><addtitle>Environ Toxicol Chem</addtitle><description>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). Environ Toxicol Chem 2015;34:2403–2408. © 2015 SETAC</description><subject>Age Factors</subject><subject>Alaska</subject><subject>Animals</subject><subject>Antioxidants</subject><subject>Bearded seal</subject><subject>Biomonitoring</subject><subject>Cortexes</subject><subject>Environmental Monitoring</subject><subject>Erignathus barbatus</subject><subject>Female</subject><subject>Hair - chemistry</subject><subject>Heart</subject><subject>Kidney - metabolism</subject><subject>Kidneys</subject><subject>Liver</subject><subject>Liver - metabolism</subject><subject>Male</subject><subject>Marine mammals</subject><subject>Mercury</subject><subject>Mercury (metal)</subject><subject>Mercury - analysis</subject><subject>Molar ratio</subject><subject>Muscle, Skeletal - metabolism</subject><subject>Muscles</subject><subject>Musculoskeletal system</subject><subject>Myocardium - metabolism</subject><subject>Seals</subject><subject>Seals, Earless - metabolism</subject><subject>Selenium</subject><subject>Selenium - analysis</subject><subject>Tissues</subject><subject>Water Pollutants, Chemical - analysis</subject><issn>0730-7268</issn><issn>1552-8618</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqN0UGL1DAUB_Agijuugp9AAl48TNeXpkma47DqKuworCOCl5CmL2532nQ3adW5-8FtZ8cVBMFT4OX3_iH8CXnK4IQB5C9xcCcclL5HFkyIPCslK--TBSgOmcpleUQepXQFwKTW-iE5yiUwXii1ID_XGN0Yd9SGmiZsMTRjR10fHIYh2qHpQ6JNoGk73Q22pd2YXItL2jbfMC73axG_7lnv6XCJ9BJtHPYX26YOuJvXq2lW4_yCbRP1se_oqrVpa5f008fVY_LAT3N8cjiPyebN683p2-z8w9m709V55oQEnclSeAsSShTaMlZ577ktKi5q8E4WgFxyJ7T2UOd1VaB0zPPSipJpXjjPj8mL29jr2N-MmAbTNclh29qA_ZgMU4ILAVzL_6B5zmRRgpjo87_oVT_GMP1jVkxKrnj5J9DFPqWI3lzHprNxZxiYuUMzdWjmDif67BA4Vh3Wd_B3aRPIbsH3psXdP4PMZA6BB9-kAX_ceRu3RiquhPn8_sxsvry6YOu1MBf8Fz2ns-Q</recordid><startdate>201510</startdate><enddate>201510</enddate><creator>Correa, Lucero</creator><creator>Castellini, J. 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Margaret</au><au>Quakenbush, Lori T.</au><au>O'Hara, Todd M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mercury and selenium concentrations in skeletal muscle, liver, and regions of the heart and kidney in bearded seals from Alaska, USA</atitle><jtitle>Environmental toxicology and chemistry</jtitle><addtitle>Environ Toxicol Chem</addtitle><date>2015-10</date><risdate>2015</risdate><volume>34</volume><issue>10</issue><spage>2403</spage><epage>2408</epage><pages>2403-2408</pages><issn>0730-7268</issn><eissn>1552-8618</eissn><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). Environ Toxicol Chem 2015;34:2403–2408. © 2015 SETAC</abstract><cop>United States</cop><pub>Blackwell Publishing Ltd</pub><pmid>26013477</pmid><doi>10.1002/etc.3079</doi><tpages>6</tpages></addata></record> |
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| source | MEDLINE; Wiley Online Library Journals Frontfile Complete |
| subjects | Age Factors Alaska Animals Antioxidants Bearded seal Biomonitoring Cortexes Environmental Monitoring Erignathus barbatus Female Hair - chemistry Heart Kidney - metabolism Kidneys Liver Liver - metabolism Male Marine mammals Mercury Mercury (metal) Mercury - analysis Molar ratio Muscle, Skeletal - metabolism Muscles Musculoskeletal system Myocardium - metabolism Seals Seals, Earless - metabolism Selenium Selenium - analysis Tissues Water Pollutants, Chemical - analysis |
| title | 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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