| Changes in arterial PO(2), physiological blood parameters and intracellular antioxidants in free-swimming Atlantic cod (Gadus morhua) exposed to varying levels of hyperoxia. | |
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MedLine Citation:
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PMID: 20878467 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Free-swimming Atlantic cod (Gadus morhua) were exposed to water oxygen pressures (P (w)O(2)) ranging from 18.1 to 41.5 kPa and sampled for blood using an indwelling caudal artery cannula. Arterial blood oxygen pressure (P (a)O(2)) increased with increasing P (w)O(2), from 12.0 kPa in normoxia (18.1 kPa) to 34.2 kPa in the highest hyperoxic level tested (41.5 kPa). Blood CO(2) pressure and plasma bicarbonate concentration increased with P (w)O(2), indicating reduced ventilation with increased P (w)O(2). Plasma glucose, sodium and potassium were not affected by water oxygen level. Blood oxidative stress biomarkers, reduced glutathione, oxidized glutathione and the oxidative stress index (ratio between oxidized and total glutathione) differed intermittently between normoxia and hyperoxia. The oxidative stress index was higher in the blood of exposed compared to unexposed control cod. Together with elevated P (a)O(2), these findings suggest increased production of reactive oxygen species and increased oxidative stress in Atlantic cod exposed to hyperoxia. |
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Authors:
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Anders Karlsson; Lene Sørlie Heier; Bjørn Olav Rosseland; Brit Salbu; Anders Kiessling |
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Publication Detail:
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Type: Journal Article Date: 2010-09-29 |
Journal Detail:
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Title: Fish physiology and biochemistry Volume: 37 ISSN: 1573-5168 ISO Abbreviation: Fish Physiol. Biochem. Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-03-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100955049 Medline TA: Fish Physiol Biochem Country: Netherlands |
Other Details:
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Languages: eng Pagination: 249-58 Citation Subset: IM |
Affiliation:
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Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432, Ås, Norway, anders.karlsson@umb.no. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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