Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques
Through their diet, herbivores inhabiting contaminated sites may be chronically exposed to a variety of aryl hydrocarbons (e.g., dioxins and polycyclic aromatic hydrocarbons [PAHs]). However, little is known about how differences in morphology and physiology among plant species alter the environment...
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ftunivgent:oai:archive.ugent.be:445166 2023-06-11T04:08:56+02:00 Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques Armstrong, Sarah A Van de Wiele, Tom Germida, James J Siciliano, Steven 2007 application/pdf https://biblio.ugent.be/publication/445166 http://hdl.handle.net/1854/LU-445166 https://doi.org/10.1897/06-226R1.1 https://biblio.ugent.be/publication/445166/file/8205797 eng eng https://biblio.ugent.be/publication/445166 http://hdl.handle.net/1854/LU-445166 http://dx.doi.org/10.1897/06-226R1.1 https://biblio.ugent.be/publication/445166/file/8205797 No license (in copyright) info:eu-repo/semantics/restrictedAccess ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY ISSN: 0730-7268 Earth and Environmental Sciences polycyclic aromatic hydrocarbons CONTAMINANTS bioaccessibility digestion simulation aryl hydrocarbon assay Arctic vegetation POLYCYCLIC AROMATIC-HYDROCARBONS INTESTINAL MICROBIAL ECOSYSTEM VEGETATION RECEPTOR INDUCTION NEEDLES REACTOR LIPIDS journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2007 ftunivgent https://doi.org/10.1897/06-226R1.1 2023-05-10T22:30:12Z Through their diet, herbivores inhabiting contaminated sites may be chronically exposed to a variety of aryl hydrocarbons (e.g., dioxins and polycyclic aromatic hydrocarbons [PAHs]). However, little is known about how differences in morphology and physiology among plant species alter the environmental accumulation of aryl hydrocarbons or their release and subsequent activity in the gastrointestinal tract of herbivores after ingestion. In the present study, the activity of aryl hydrocarbons during digestion was examined using six Arctic plant species growing in impacted and reference sites near Inuvik, Northwest Territories, Canada. The plant species studied were black spruce (Picea mariana), labrador tea (Ledum groenlandicum), bog birch (Betula glandulosa), green alder (Alnus crispa), water sedge (Carex aquatilis), and little-tree willow (Salix arbusculoides). Plants were digested using a simulator of the upper digestive tract, and aryl hydrocarbon release was evaluated using an aryl hydrocarbon-receptor assay. Bioaccessible aryl hydrocarbon activity varied among the plant species tested. The species with the greatest activity was green alder, and the species with the least activity was black spruce. Further investigation revealed that digested plant extracts may antagonize the aryl hydrocarbon receptor and prevent bioactivation of the aryl compound benzo[a]pyrene. Thus, PAH risk from the ingestion of vegetation varies among plant species and may depend on antagonists present in the vegetation. Article in Journal/Newspaper Arctic Carex aquatilis Inuvik Northwest Territories Ghent University Academic Bibliography Arctic Northwest Territories Canada Inuvik ENVELOPE(-133.610,-133.610,68.341,68.341) Environmental Toxicology and Chemistry 26 3 491 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences polycyclic aromatic hydrocarbons CONTAMINANTS bioaccessibility digestion simulation aryl hydrocarbon assay Arctic vegetation POLYCYCLIC AROMATIC-HYDROCARBONS INTESTINAL MICROBIAL ECOSYSTEM VEGETATION RECEPTOR INDUCTION NEEDLES REACTOR LIPIDS |
spellingShingle |
Earth and Environmental Sciences polycyclic aromatic hydrocarbons CONTAMINANTS bioaccessibility digestion simulation aryl hydrocarbon assay Arctic vegetation POLYCYCLIC AROMATIC-HYDROCARBONS INTESTINAL MICROBIAL ECOSYSTEM VEGETATION RECEPTOR INDUCTION NEEDLES REACTOR LIPIDS Armstrong, Sarah A Van de Wiele, Tom Germida, James J Siciliano, Steven Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques |
topic_facet |
Earth and Environmental Sciences polycyclic aromatic hydrocarbons CONTAMINANTS bioaccessibility digestion simulation aryl hydrocarbon assay Arctic vegetation POLYCYCLIC AROMATIC-HYDROCARBONS INTESTINAL MICROBIAL ECOSYSTEM VEGETATION RECEPTOR INDUCTION NEEDLES REACTOR LIPIDS |
description |
Through their diet, herbivores inhabiting contaminated sites may be chronically exposed to a variety of aryl hydrocarbons (e.g., dioxins and polycyclic aromatic hydrocarbons [PAHs]). However, little is known about how differences in morphology and physiology among plant species alter the environmental accumulation of aryl hydrocarbons or their release and subsequent activity in the gastrointestinal tract of herbivores after ingestion. In the present study, the activity of aryl hydrocarbons during digestion was examined using six Arctic plant species growing in impacted and reference sites near Inuvik, Northwest Territories, Canada. The plant species studied were black spruce (Picea mariana), labrador tea (Ledum groenlandicum), bog birch (Betula glandulosa), green alder (Alnus crispa), water sedge (Carex aquatilis), and little-tree willow (Salix arbusculoides). Plants were digested using a simulator of the upper digestive tract, and aryl hydrocarbon release was evaluated using an aryl hydrocarbon-receptor assay. Bioaccessible aryl hydrocarbon activity varied among the plant species tested. The species with the greatest activity was green alder, and the species with the least activity was black spruce. Further investigation revealed that digested plant extracts may antagonize the aryl hydrocarbon receptor and prevent bioactivation of the aryl compound benzo[a]pyrene. Thus, PAH risk from the ingestion of vegetation varies among plant species and may depend on antagonists present in the vegetation. |
format |
Article in Journal/Newspaper |
author |
Armstrong, Sarah A Van de Wiele, Tom Germida, James J Siciliano, Steven |
author_facet |
Armstrong, Sarah A Van de Wiele, Tom Germida, James J Siciliano, Steven |
author_sort |
Armstrong, Sarah A |
title |
Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques |
title_short |
Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques |
title_full |
Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques |
title_fullStr |
Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques |
title_full_unstemmed |
Aryl hydrocarbon bioaccessibility to small mammals from Arctic plants using in vitro techniques |
title_sort |
aryl hydrocarbon bioaccessibility to small mammals from arctic plants using in vitro techniques |
publishDate |
2007 |
url |
https://biblio.ugent.be/publication/445166 http://hdl.handle.net/1854/LU-445166 https://doi.org/10.1897/06-226R1.1 https://biblio.ugent.be/publication/445166/file/8205797 |
long_lat |
ENVELOPE(-133.610,-133.610,68.341,68.341) |
geographic |
Arctic Northwest Territories Canada Inuvik |
geographic_facet |
Arctic Northwest Territories Canada Inuvik |
genre |
Arctic Carex aquatilis Inuvik Northwest Territories |
genre_facet |
Arctic Carex aquatilis Inuvik Northwest Territories |
op_source |
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY ISSN: 0730-7268 |
op_relation |
https://biblio.ugent.be/publication/445166 http://hdl.handle.net/1854/LU-445166 http://dx.doi.org/10.1897/06-226R1.1 https://biblio.ugent.be/publication/445166/file/8205797 |
op_rights |
No license (in copyright) info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1897/06-226R1.1 |
container_title |
Environmental Toxicology and Chemistry |
container_volume |
26 |
container_issue |
3 |
container_start_page |
491 |
_version_ |
1768382580975992832 |