Regulation of cerebrospinal fluid [K +] in the spiny dogfish, squalus acanthias

1. 1. Mean normal potassium concentrations of dogfish ( Squalus acanthias) plasma and cerebrospinal fluid (CSF) were 4·5 mequiv./kg H 2O, respectively. 2. 2. Following periods of 3–8 hr of hyperkalemia, CSF [K +] increased only slightly, from the normal value of 3·5 to 3·8 mequiv./kg H 2O. This demo...

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Bibliographic Details
Published inComparative biochemistry and physiology Vol. 21; no. 2; pp. 431 - 434
Main Authors Cserr, Helen, Rall, D.P.
Format Journal Article
LanguageEnglish
Published England Elsevier B.V 01.05.1967
Subjects
Animals
Potassium - blood
Potassium - cerebrospinal fluid
Sharks - metabolism
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Summary:1. 1. Mean normal potassium concentrations of dogfish ( Squalus acanthias) plasma and cerebrospinal fluid (CSF) were 4·5 mequiv./kg H 2O, respectively. 2. 2. Following periods of 3–8 hr of hyperkalemia, CSF [K +] increased only slightly, from the normal value of 3·5 to 3·8 mequiv./kg H 2O. This demonstrates regulation of CSF [K +]. 3. 3. Potassium concentrations of plasma and CSF from fish sampled after 5–15 min out of water were elevated significantly. This observation may explain high values reported recently for these concentrations.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0010-406X
DOI:10.1016/0010-406X(67)90805-5