Cortisol levels in hair of East Greenland polar bears
To demonstrate the ability to assess long-term hypothalamic-pituitary-adrenocortical (HPA) axis activity in polar bears (Ursus maritimus), a pilot study was conducted in which cortisol concentrations was analyzed in hair from 7 female (3–19 years) and 10 male (6-19 years) East Greenland polar bears...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019279 http://www.ncbi.nlm.nih.gov/pubmed/21144554 https://doi.org/10.1016/j.scitotenv.2010.10.047 |
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ftpubmed:oai:pubmedcentral.nih.gov:3019279 2023-05-15T16:03:38+02:00 Cortisol levels in hair of East Greenland polar bears Bechshøft, TØ Sonne, C Dietz, R Born, EW Novak, MA Henchey, E Meyer, JS 2010-12-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019279 http://www.ncbi.nlm.nih.gov/pubmed/21144554 https://doi.org/10.1016/j.scitotenv.2010.10.047 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019279 http://www.ncbi.nlm.nih.gov/pubmed/21144554 http://dx.doi.org/10.1016/j.scitotenv.2010.10.047 Article Text 2010 ftpubmed https://doi.org/10.1016/j.scitotenv.2010.10.047 2013-09-03T09:51:12Z To demonstrate the ability to assess long-term hypothalamic-pituitary-adrenocortical (HPA) axis activity in polar bears (Ursus maritimus), a pilot study was conducted in which cortisol concentrations was analyzed in hair from 7 female (3–19 years) and 10 male (6-19 years) East Greenland polar bears sampled 1994–2006. Hair was chosen as matrix as it is non-invasive, seasonally harmonized, and has been validated as an index of long-term changes in cortisol levels. Samples were categorized according to contamination: Eight were clean (2 females, 6 males), 5 had been contaminated with bear blood (2 F, 3 M), and 4 with bear fat (3 F, 1 M). There was no significant difference in cortisol concentration between the three categories after external contamination was removed. However, contaminated hair samples should be cleaned before cortisol determination. Average hair cortisol concentration was 8.90 pg/mg (range: 5.5 to 16.4 pg/mg). There was no significant correlation between cortisol concentration and age (p = 0.81) or sampling year (p = 0.11). However, females had higher mean cortisol concentration than males (females mean: 11.0 pg/mg, males: 7.3 pg/mg; p = 0.01). The study showed that polar bear hair contains measurable amounts of cortisol and that cortisol in hair may be used in studies of long-term stress in polar bears. Text East Greenland Greenland Ursus maritimus PubMed Central (PMC) Greenland Science of The Total Environment 409 4 831 834 |
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Article Bechshøft, TØ Sonne, C Dietz, R Born, EW Novak, MA Henchey, E Meyer, JS Cortisol levels in hair of East Greenland polar bears |
topic_facet |
Article |
description |
To demonstrate the ability to assess long-term hypothalamic-pituitary-adrenocortical (HPA) axis activity in polar bears (Ursus maritimus), a pilot study was conducted in which cortisol concentrations was analyzed in hair from 7 female (3–19 years) and 10 male (6-19 years) East Greenland polar bears sampled 1994–2006. Hair was chosen as matrix as it is non-invasive, seasonally harmonized, and has been validated as an index of long-term changes in cortisol levels. Samples were categorized according to contamination: Eight were clean (2 females, 6 males), 5 had been contaminated with bear blood (2 F, 3 M), and 4 with bear fat (3 F, 1 M). There was no significant difference in cortisol concentration between the three categories after external contamination was removed. However, contaminated hair samples should be cleaned before cortisol determination. Average hair cortisol concentration was 8.90 pg/mg (range: 5.5 to 16.4 pg/mg). There was no significant correlation between cortisol concentration and age (p = 0.81) or sampling year (p = 0.11). However, females had higher mean cortisol concentration than males (females mean: 11.0 pg/mg, males: 7.3 pg/mg; p = 0.01). The study showed that polar bear hair contains measurable amounts of cortisol and that cortisol in hair may be used in studies of long-term stress in polar bears. |
format |
Text |
author |
Bechshøft, TØ Sonne, C Dietz, R Born, EW Novak, MA Henchey, E Meyer, JS |
author_facet |
Bechshøft, TØ Sonne, C Dietz, R Born, EW Novak, MA Henchey, E Meyer, JS |
author_sort |
Bechshøft, TØ |
title |
Cortisol levels in hair of East Greenland polar bears |
title_short |
Cortisol levels in hair of East Greenland polar bears |
title_full |
Cortisol levels in hair of East Greenland polar bears |
title_fullStr |
Cortisol levels in hair of East Greenland polar bears |
title_full_unstemmed |
Cortisol levels in hair of East Greenland polar bears |
title_sort |
cortisol levels in hair of east greenland polar bears |
publishDate |
2010 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019279 http://www.ncbi.nlm.nih.gov/pubmed/21144554 https://doi.org/10.1016/j.scitotenv.2010.10.047 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Ursus maritimus |
genre_facet |
East Greenland Greenland Ursus maritimus |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019279 http://www.ncbi.nlm.nih.gov/pubmed/21144554 http://dx.doi.org/10.1016/j.scitotenv.2010.10.047 |
op_doi |
https://doi.org/10.1016/j.scitotenv.2010.10.047 |
container_title |
Science of The Total Environment |
container_volume |
409 |
container_issue |
4 |
container_start_page |
831 |
op_container_end_page |
834 |
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1766399330940354560 |