Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros )
Narwhals (Monodon monoceros) are at the top of the Arctic food web and therefore might biomagnify high total mercury (Hg) concentrations in organs and tissues. The aim of this study was to determine histopathology and Hg concentrations in liver and kidneys from 15 North East Greenland narwhals (3 su...
Published in: | Journal of Toxicology and Environmental Health, Part A |
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2018
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Online Access: | https://curis.ku.dk/portal/da/publications/hepatic-and-renal-histology-and-mercury-concentrations-of-north-west-and-north-east-greenland-narwhals-monodon-monoceros(8b19f6d1-9560-40b9-ae0f-2aaef4c4a0ca).html https://doi.org/10.1080/15287394.2018.1435601 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/8b19f6d1-9560-40b9-ae0f-2aaef4c4a0ca 2024-05-19T07:36:43+00:00 Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) Sonne, Christian Leifsson, Pall S. Søndergaard, Jens Dietz, Rune 2018-04 https://curis.ku.dk/portal/da/publications/hepatic-and-renal-histology-and-mercury-concentrations-of-north-west-and-north-east-greenland-narwhals-monodon-monoceros(8b19f6d1-9560-40b9-ae0f-2aaef4c4a0ca).html https://doi.org/10.1080/15287394.2018.1435601 eng eng info:eu-repo/semantics/closedAccess Sonne , C , Leifsson , P S , Søndergaard , J & Dietz , R 2018 , ' Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) ' , Journal of Toxicology and Environmental Health - Part A: Current Issues , vol. 81 , no. 8 , pp. 202-211 . https://doi.org/10.1080/15287394.2018.1435601 article 2018 ftcopenhagenunip https://doi.org/10.1080/15287394.2018.1435601 2024-04-25T00:45:04Z Narwhals (Monodon monoceros) are at the top of the Arctic food web and therefore might biomagnify high total mercury (Hg) concentrations in organs and tissues. The aim of this study was to determine histopathology and Hg concentrations in liver and kidneys from 15 North East Greenland narwhals (3 subadult females, 8 adult females, 3 subadult males, and 1 adult male) and compare data with previous observations of 12 North West Greenland specimens (1 subadult female, 4 adult females, 1 subadult male, and 6 adult males). The zoological length was significantly larger and hepatic and renal concentrations significantly higher in adults compared to subadults. When comparing tissues, the Hg levels were significantly the highest in liver, while a correlation between metal levels in liver and kidneys was positive and significant. Histological examination of renal tissues presented four types of glomerular lesions (capillary dilatation [0–100%], membrane thickening [0–100%], dilatation of space [0–80%], and sclerosis [0–70%]) and two tubular lesions (atrophy/hyalinization [0–40%] and casts [0–60%]). Hepatic tissues exhibited three portal lesions (fibrosis [0–33%], cell infiltrates [0–40%], and bile duct proliferation [0–40%]) and two parenchymal lesions (steatosis [83–100%] and lipid-filled Ito cells [0–33%]). All 12 lesions were found in adult whales from North West Greenland while eight were present in adult whales from North East Greenland. Six lesions were detected in subadults from North East Greenland and four in subadults from North West Greenland. A significantly higher frequency of dilatation and hyalinization of Bowman’s space and capsule and glomerular capillary dilatation was found in adult narwhals from West Greenland. There was no marked difference in Hg concentrations in whales with and without histological lesions. In conclusion, the prevalence of histological changes and Hg levels were the highest in adults and therefore both age and metal are important factors to include when evaluating liver and kidney ... Article in Journal/Newspaper Arctic East Greenland Greenland Monodon monoceros narwhal* University of Copenhagen: Research Journal of Toxicology and Environmental Health, Part A 81 8 202 211 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Narwhals (Monodon monoceros) are at the top of the Arctic food web and therefore might biomagnify high total mercury (Hg) concentrations in organs and tissues. The aim of this study was to determine histopathology and Hg concentrations in liver and kidneys from 15 North East Greenland narwhals (3 subadult females, 8 adult females, 3 subadult males, and 1 adult male) and compare data with previous observations of 12 North West Greenland specimens (1 subadult female, 4 adult females, 1 subadult male, and 6 adult males). The zoological length was significantly larger and hepatic and renal concentrations significantly higher in adults compared to subadults. When comparing tissues, the Hg levels were significantly the highest in liver, while a correlation between metal levels in liver and kidneys was positive and significant. Histological examination of renal tissues presented four types of glomerular lesions (capillary dilatation [0–100%], membrane thickening [0–100%], dilatation of space [0–80%], and sclerosis [0–70%]) and two tubular lesions (atrophy/hyalinization [0–40%] and casts [0–60%]). Hepatic tissues exhibited three portal lesions (fibrosis [0–33%], cell infiltrates [0–40%], and bile duct proliferation [0–40%]) and two parenchymal lesions (steatosis [83–100%] and lipid-filled Ito cells [0–33%]). All 12 lesions were found in adult whales from North West Greenland while eight were present in adult whales from North East Greenland. Six lesions were detected in subadults from North East Greenland and four in subadults from North West Greenland. A significantly higher frequency of dilatation and hyalinization of Bowman’s space and capsule and glomerular capillary dilatation was found in adult narwhals from West Greenland. There was no marked difference in Hg concentrations in whales with and without histological lesions. In conclusion, the prevalence of histological changes and Hg levels were the highest in adults and therefore both age and metal are important factors to include when evaluating liver and kidney ... |
format |
Article in Journal/Newspaper |
author |
Sonne, Christian Leifsson, Pall S. Søndergaard, Jens Dietz, Rune |
spellingShingle |
Sonne, Christian Leifsson, Pall S. Søndergaard, Jens Dietz, Rune Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) |
author_facet |
Sonne, Christian Leifsson, Pall S. Søndergaard, Jens Dietz, Rune |
author_sort |
Sonne, Christian |
title |
Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) |
title_short |
Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) |
title_full |
Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) |
title_fullStr |
Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) |
title_full_unstemmed |
Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) |
title_sort |
hepatic and renal histology and mercury concentrations of north west and north east greenland narwhals ( monodon monoceros ) |
publishDate |
2018 |
url |
https://curis.ku.dk/portal/da/publications/hepatic-and-renal-histology-and-mercury-concentrations-of-north-west-and-north-east-greenland-narwhals-monodon-monoceros(8b19f6d1-9560-40b9-ae0f-2aaef4c4a0ca).html https://doi.org/10.1080/15287394.2018.1435601 |
genre |
Arctic East Greenland Greenland Monodon monoceros narwhal* |
genre_facet |
Arctic East Greenland Greenland Monodon monoceros narwhal* |
op_source |
Sonne , C , Leifsson , P S , Søndergaard , J & Dietz , R 2018 , ' Hepatic and renal histology and mercury concentrations of North West and North East Greenland narwhals ( Monodon monoceros ) ' , Journal of Toxicology and Environmental Health - Part A: Current Issues , vol. 81 , no. 8 , pp. 202-211 . https://doi.org/10.1080/15287394.2018.1435601 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1080/15287394.2018.1435601 |
container_title |
Journal of Toxicology and Environmental Health, Part A |
container_volume |
81 |
container_issue |
8 |
container_start_page |
202 |
op_container_end_page |
211 |
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1799475849459662848 |