Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia
The oxygen binding of whole blood from humans and two arctic mammals, reindeer and muskox, has been studied as a function of carbon dioxide and temperature. All bloods display a marked Bohr effect with Bohr coefficients in the range -0.44- -0.73. The Bohr effect is more pronounced at 20 degrees C. T...
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ftunivromatorver:oai:art.torvergata.it:2108/54798 2023-08-20T04:03:31+02:00 Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia Brix, O Bårdgard, A Mathisen, S Tyler, N Nuutinen, M Giardina, B. CONDO', SAVERIO GIOVANNI Brix, O Bårdgard, A Mathisen, S Tyler, N Nuutinen, M Condo', Sg Giardina, B 1990 http://hdl.handle.net/2108/54798 eng eng volume:159 issue:6 firstpage:655 lastpage:660 journal:JOURNAL OF COMPARATIVE PHYSIOLOGY. B, BIOCHEMICAL, SYSTEMIC, AND ENVIRONMENTAL PHYSIOLOGY http://hdl.handle.net/2108/54798 Oxygen Animal Hemoglobin Hydrogen-Ion Concentration Human Erythrocyte Acclimatization Temperature Biological Transport Ruminant Reindeer Arctic Regions Settore BIO/10 - BIOCHIMICA info:eu-repo/semantics/article 1990 ftunivromatorver 2023-08-01T23:07:37Z The oxygen binding of whole blood from humans and two arctic mammals, reindeer and muskox, has been studied as a function of carbon dioxide and temperature. All bloods display a marked Bohr effect with Bohr coefficients in the range -0.44- -0.73. The Bohr effect is more pronounced at 20 degrees C. The temperature sensitivity of reindeer and muskox blood expressed by the apparent heat of oxygenation, delta H, is almost three times lower than that of human HbA under the same experimental conditions. This thermodynamic difference gives special benefits to arctic mammals with large heterothermy by safeguarding oxygen unloading at very low ambient temperatures. Article in Journal/Newspaper Arctic muskox Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca Arctic |
institution |
Open Polar |
collection |
Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca |
op_collection_id |
ftunivromatorver |
language |
English |
topic |
Oxygen Animal Hemoglobin Hydrogen-Ion Concentration Human Erythrocyte Acclimatization Temperature Biological Transport Ruminant Reindeer Arctic Regions Settore BIO/10 - BIOCHIMICA |
spellingShingle |
Oxygen Animal Hemoglobin Hydrogen-Ion Concentration Human Erythrocyte Acclimatization Temperature Biological Transport Ruminant Reindeer Arctic Regions Settore BIO/10 - BIOCHIMICA Brix, O Bårdgard, A Mathisen, S Tyler, N Nuutinen, M Giardina, B. CONDO', SAVERIO GIOVANNI Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia |
topic_facet |
Oxygen Animal Hemoglobin Hydrogen-Ion Concentration Human Erythrocyte Acclimatization Temperature Biological Transport Ruminant Reindeer Arctic Regions Settore BIO/10 - BIOCHIMICA |
description |
The oxygen binding of whole blood from humans and two arctic mammals, reindeer and muskox, has been studied as a function of carbon dioxide and temperature. All bloods display a marked Bohr effect with Bohr coefficients in the range -0.44- -0.73. The Bohr effect is more pronounced at 20 degrees C. The temperature sensitivity of reindeer and muskox blood expressed by the apparent heat of oxygenation, delta H, is almost three times lower than that of human HbA under the same experimental conditions. This thermodynamic difference gives special benefits to arctic mammals with large heterothermy by safeguarding oxygen unloading at very low ambient temperatures. |
author2 |
Brix, O Bårdgard, A Mathisen, S Tyler, N Nuutinen, M Condo', Sg Giardina, B |
format |
Article in Journal/Newspaper |
author |
Brix, O Bårdgard, A Mathisen, S Tyler, N Nuutinen, M Giardina, B. CONDO', SAVERIO GIOVANNI |
author_facet |
Brix, O Bårdgard, A Mathisen, S Tyler, N Nuutinen, M Giardina, B. CONDO', SAVERIO GIOVANNI |
author_sort |
Brix, O |
title |
Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia |
title_short |
Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia |
title_full |
Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia |
title_fullStr |
Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia |
title_full_unstemmed |
Oxygen transport in the blood of arctic mammals: adaptation to local heterothermia |
title_sort |
oxygen transport in the blood of arctic mammals: adaptation to local heterothermia |
publishDate |
1990 |
url |
http://hdl.handle.net/2108/54798 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic muskox |
genre_facet |
Arctic muskox |
op_relation |
volume:159 issue:6 firstpage:655 lastpage:660 journal:JOURNAL OF COMPARATIVE PHYSIOLOGY. B, BIOCHEMICAL, SYSTEMIC, AND ENVIRONMENTAL PHYSIOLOGY http://hdl.handle.net/2108/54798 |
_version_ |
1774713901717389312 |