The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study
All Arctic visitors have to deal with extreme conditions, including a constant high light intensity during the summer season or constant darkness during winter. The light/dark cycle serves as the most potent synchronizing signal for the biological clock, and any Arctic visitor attending those region...
Published in: | Journal of Circadian Rhythms |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Ubiquity Press
2019
|
Subjects: | |
Online Access: | https://www.jcircadianrhythms.com/jms/article/view/186 https://doi.org/10.5334/jcr.186 |
id |
ftjcr:oai:ojs.www.jcircadianrhythms.com:article/186 |
---|---|
record_format |
openpolar |
spelling |
ftjcr:oai:ojs.www.jcircadianrhythms.com:article/186 2023-05-15T14:54:42+02:00 The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study Weissová, Kamila Škrabalová, Jitka Skálová, Kateřina Bendová, Zdeňka Kopřivová, Jana 2019-10-09 application/pdf application/xml https://www.jcircadianrhythms.com/jms/article/view/186 https://doi.org/10.5334/jcr.186 eng eng Ubiquity Press https://www.jcircadianrhythms.com/jms/article/view/186/320 https://www.jcircadianrhythms.com/jms/article/view/186/321 10.5334/jcr.186 https://www.jcircadianrhythms.com/jms/article/view/186 doi:10.5334/jcr.186 Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). CC-BY Journal of Circadian Rhythms; Vol 17 (2019); 9 1740-3391 circadian system arctic polar day social cues human chronobiology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftjcr https://doi.org/10.5334/jcr.186 2022-04-24T05:04:45Z All Arctic visitors have to deal with extreme conditions, including a constant high light intensity during the summer season or constant darkness during winter. The light/dark cycle serves as the most potent synchronizing signal for the biological clock, and any Arctic visitor attending those regions during winter or summer would struggle with the absence of those entraining signals. However, the inner clock can be synchronized by other zeitgebers such as physical activity, food intake, or social interactions. Here, we investigated the effect of the polar day on the circadian clock of 10 researchers attending the polar base station in the Svalbard region during the summer season. The data collected in Svalbard was compared with data obtained just before leaving for the expedition (in the Czech Republic 49.8175°N, 15.4730°E). To determine the circadian functions, we monitored activity/rest rhythm with wrist actigraphy followed by sleep diaries, melatonin rhythm in saliva, and clock gene expression (Per1, Bmal1, and Nr1D1) in buccal mucosa samples. Our data shows that the two-week stay in Svalbard delayed melatonin onset but did not affect its rhythmic secretion, and delayed the activity/rest rhythm. Furthermore, the clock gene expression displayed a higher amplitude in Svalbard compared to the amplitude detected in the Czech Republic. We hypothesize that the common daily schedule at the Svalbard expedition strengthens circadian rhythmicity even in conditions of compromised light/dark cycles. To our knowledge, this is the first study to demonstrate peripheral clock gene expression during a polar expedition. Article in Journal/Newspaper Arctic Svalbard Journal of Circadian Rhythms Arctic Svalbard Journal of Circadian Rhythms 17 1 |
institution |
Open Polar |
collection |
Journal of Circadian Rhythms |
op_collection_id |
ftjcr |
language |
English |
topic |
circadian system arctic polar day social cues human chronobiology |
spellingShingle |
circadian system arctic polar day social cues human chronobiology Weissová, Kamila Škrabalová, Jitka Skálová, Kateřina Bendová, Zdeňka Kopřivová, Jana The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study |
topic_facet |
circadian system arctic polar day social cues human chronobiology |
description |
All Arctic visitors have to deal with extreme conditions, including a constant high light intensity during the summer season or constant darkness during winter. The light/dark cycle serves as the most potent synchronizing signal for the biological clock, and any Arctic visitor attending those regions during winter or summer would struggle with the absence of those entraining signals. However, the inner clock can be synchronized by other zeitgebers such as physical activity, food intake, or social interactions. Here, we investigated the effect of the polar day on the circadian clock of 10 researchers attending the polar base station in the Svalbard region during the summer season. The data collected in Svalbard was compared with data obtained just before leaving for the expedition (in the Czech Republic 49.8175°N, 15.4730°E). To determine the circadian functions, we monitored activity/rest rhythm with wrist actigraphy followed by sleep diaries, melatonin rhythm in saliva, and clock gene expression (Per1, Bmal1, and Nr1D1) in buccal mucosa samples. Our data shows that the two-week stay in Svalbard delayed melatonin onset but did not affect its rhythmic secretion, and delayed the activity/rest rhythm. Furthermore, the clock gene expression displayed a higher amplitude in Svalbard compared to the amplitude detected in the Czech Republic. We hypothesize that the common daily schedule at the Svalbard expedition strengthens circadian rhythmicity even in conditions of compromised light/dark cycles. To our knowledge, this is the first study to demonstrate peripheral clock gene expression during a polar expedition. |
format |
Article in Journal/Newspaper |
author |
Weissová, Kamila Škrabalová, Jitka Skálová, Kateřina Bendová, Zdeňka Kopřivová, Jana |
author_facet |
Weissová, Kamila Škrabalová, Jitka Skálová, Kateřina Bendová, Zdeňka Kopřivová, Jana |
author_sort |
Weissová, Kamila |
title |
The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study |
title_short |
The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study |
title_full |
The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study |
title_fullStr |
The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study |
title_full_unstemmed |
The Effect of a Common Daily Schedule on Human Circadian Rhythms During the Polar Day in Svalbard: A Field Study |
title_sort |
effect of a common daily schedule on human circadian rhythms during the polar day in svalbard: a field study |
publisher |
Ubiquity Press |
publishDate |
2019 |
url |
https://www.jcircadianrhythms.com/jms/article/view/186 https://doi.org/10.5334/jcr.186 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_source |
Journal of Circadian Rhythms; Vol 17 (2019); 9 1740-3391 |
op_relation |
https://www.jcircadianrhythms.com/jms/article/view/186/320 https://www.jcircadianrhythms.com/jms/article/view/186/321 10.5334/jcr.186 https://www.jcircadianrhythms.com/jms/article/view/186 doi:10.5334/jcr.186 |
op_rights |
Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5334/jcr.186 |
container_title |
Journal of Circadian Rhythms |
container_volume |
17 |
container_issue |
1 |
_version_ |
1766326452472512512 |