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Methoxylated PBDEs (MeO-PBDEs), hydroxylated PBDEs (HO-PBDEs) and hydroxylated PCBs (HO-PCBs) in the liver of harbor seals from the northwest Atlantic

Overview of attention for article published in Science of the Total Environment, June 2014
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Title
Methoxylated PBDEs (MeO-PBDEs), hydroxylated PBDEs (HO-PBDEs) and hydroxylated PCBs (HO-PCBs) in the liver of harbor seals from the northwest Atlantic
Published in
Science of the Total Environment, June 2014
DOI 10.1016/j.scitotenv.2014.06.028
Pubmed ID
Authors

Liesbeth Weijs, Susan D. Shaw, Michelle L. Berger, Hugo Neels, Ronny Blust, Adrian Covaci

Abstract

Metabolites of PCBs and PBDEs are shown to influence the thyroid hormone homeostasis and therefore, could have an influence on the growth of newborn or young animals. We have investigated the occurrence of hydroxylated PCBs (HO-PCBs), hydroxylated PBDEs (HO-PBDEs), and methoxylated PBDEs (MeO-PBDEs) in the liver (48 pups; 6 adults) and blubber (4 pups; 1 adult) of harbor seals (Phoca vitulina concolor) from the northwest Atlantic. The sum of HO-PCBs in the liver ranged from 90 to 22,450pg/g wet weight (ww) for pups and from 410 to 5290pg/g ww for adults. Congener 4-HO-CB 107 was predominant in almost all samples regardless of age or gender, except in one adult male. Sum HO-PCB concentrations were highly correlated with the sum of precursor PCBs in the liver of harbor seals (r(2)=0.79; p<0.0001). Concentrations of sum HO-PBDEs in the liver ranged from 70 to 1850pg/g ww for pups and from 90 to 230pg/g ww for adults. HO-PBDEs were also correlated with PBDEs (r(2)=0.58; p<0.0001). Sum MeO-PBDE concentrations in the liver ranged from 20 to 1460pg/g ww in pups and from 10 to 270pg/g ww in adults. HO-PCBs and HO-PBDEs were not detected in the blubber. Levels of MeO-PBDEs in the blubber ranged from 1500 to 4400pg/g ww. In all blubber samples, 6-MeO-BDE 47 was the predominant MeO-PBDE congener, followed by 2'-MeO-BDE 68 and 5-MeO-BDE 47, respectively. The presence of HO-metabolites in pup liver suggests that young harbor seals may have some, yet limited, metabolic capacity for PCBs and PBDEs, which can lead to an excessive accumulation of these chemicals in the body. Moreover, the presence of HO-PCB and HO-PBDE metabolites may pose an additional stress for young harbor seals due to their influence on the thyroid hormone system and could have consequences for the entire population.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 48 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 2 4%
Germany 2 4%
Unknown 44 92%

Demographic breakdown

Readers by professional status Count As %
Researcher 14 29%
Student > Ph. D. Student 7 15%
Student > Master 6 13%
Other 4 8%
Student > Doctoral Student 3 6%
Other 9 19%
Unknown 5 10%
Readers by discipline Count As %
Agricultural and Biological Sciences 15 31%
Environmental Science 13 27%
Chemistry 3 6%
Arts and Humanities 2 4%
Pharmacology, Toxicology and Pharmaceutical Science 2 4%
Other 5 10%
Unknown 8 17%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 02 July 2014.
All research outputs
#17,236,655
of 25,374,917 outputs
Outputs from Science of the Total Environment
#19,099
of 29,625 outputs
Outputs of similar age
#145,558
of 242,656 outputs
Outputs of similar age from Science of the Total Environment
#116
of 179 outputs
Altmetric has tracked 25,374,917 research outputs across all sources so far. This one is in the 31st percentile – i.e., 31% of other outputs scored the same or lower than it.
So far Altmetric has tracked 29,625 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 10.6. This one is in the 35th percentile – i.e., 35% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 242,656 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 39th percentile – i.e., 39% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 179 others from the same source and published within six weeks on either side of this one. This one is in the 35th percentile – i.e., 35% of its contemporaries scored the same or lower than it.