A study of the plasma lipoproteins and the tissue lipids of the migrating lamprey,Mordacia mordax |
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Authors: | Florence C I Fellows Robyn M Mclean |
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Affiliation: | (1) Russell Grimwade School of Biochemistry, University of Melbourne, 3052 Parkville, Victoria, Australia |
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Abstract: | Sea lampreys,Mordacia mordax, were collected in spring from the Yarra River, Victoria, during their upstream spawning migration, to study the lipid composition
in their tissues and plasma and their lipid transport system. Plasma lipoproteins were isolated by preparative ultracentrifugation
and their chemical compositions were analyzed. The major classes of lipoproteins were found to be similar to those of man
and higher animals. Lipids from the muscle and liver were analyzed for fatty acids. The striking feature of the lipids in
the migrating lamprey is the presence of very high levels of cholesterol in both plasma and muscle. The possible metabolic
roles of cholesterol have been discussed. |
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