Document Detail


Fatty acid and lipid class composition in eyes and brain from teleosts and elasmobranchs.
MedLine Citation:
PMID:  15193274     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The fatty acid and lipid class composition of the eyes and brain were determined for the following species: Atlantic cod (Gadus morhua), saithe (Pollachius virens), redfish (Sebastes marinus), Atlantic salmon (Salmo salar), rainbow trout (Oncorhynchus mykiss), Portuguese dogfish (Centroscymnus coelolepis), black dogfish (Centroscyllium fabricii), and leafscale gulper shark (Centrophorus squamosus). Fatty acid analyses of eyes from teleosts in the present study indicated that the lean species contained high ratios of docosahexaenoic acid (DHA) versus eicosapentaenoic acid (EPA), and high ratios of n-3 fatty acids versus n-6 fatty acids, while these ratios were significantly lower for the fatty fish species. The lipid class analyses revealed that among both elasmobranchs and teleosts, phospholipid was the dominant class of lipids in the eyes of lean species, while triacylglycerol was the dominant class of lipids in fatty species. Analyses of the fatty acid composition of brains revealed that the deep-sea elasmobranchs, Portuguese dogfish, black dogfish, and leafscale gulper shark, contained a level of arachidonic acid (AA) that was higher than their level of EPA and about fivefold higher than what was found in the brains of teleosts. Such high levels of AA are not normally observed in fish brains; rather, they are generally observed in brains of higher vertebrates.
Authors:
Iren S Stoknes; Hege M W Økland; Eva Falch; Marianne Synnes
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology     Volume:  138     ISSN:  1096-4959     ISO Abbreviation:  Comp. Biochem. Physiol. B, Biochem. Mol. Biol.     Publication Date:  2004 Jun 
Date Detail:
Created Date:  2004-06-14     Completed Date:  2005-01-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9516061     Medline TA:  Comp Biochem Physiol B Biochem Mol Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  183-91     Citation Subset:  IM    
Affiliation:
Moereforsking, Moereforsking Aalesund, Møre Research, Box 5075, Aalesund N-6021, Norway.
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MeSH Terms
Descriptor/Qualifier:
Animals
Brain Chemistry*
Docosahexaenoic Acids / analysis
Eicosapentaenoic Acid / analysis
Elasmobranchii / physiology
Eye / chemistry*
Fatty Acids / analysis*,  chemistry
Fishes / physiology*
Lipids / analysis*,  chemistry
Species Specificity
Water
Chemical
Reg. No./Substance:
0/Fatty Acids; 0/Lipids; 1553-41-9/Eicosapentaenoic Acid; 25167-62-8/Docosahexaenoic Acids; 7732-18-5/Water

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