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  • Title: Effect of dietary fish oil (active EPA-30) on liver phospholipids in young and aged rats.
    Author: Kotkat HM, Rady AA, Nemcsok J.
    Journal: Comp Biochem Physiol A Mol Integr Physiol; 1999 Mar; 122(3):283-9. PubMed ID: 10356759.
    Abstract:
    We explored the uses of fish oil (active EPA-30) as a source of eicosapentaenate (EPA; 20:5 n-3), to young and old rats. We treated three subgroups of rats each comprising 20 young or old rats, respectively. The first group was kept on the basal ration (lab-pellet) as control diet, the second group was fed semi-purified diets contained 5% pig-fat (n-3 fatty acids deficient diet). The third group was fed a modified diet in which 50% of pig-fat was replaced by active EPA-30. Livers of young rats fed pig-fat had a drastic decrease in the amount of phosphatidylethanolamine (PE) and omega-3 polyunsaturated fatty acids (EPA, 20:5 n-3 and docosahexaenoic, DHA, 22:6 n-3) and compensatory increase of phosphatidylcholine, saturated fatty acids and n-6 polyunsaturated fatty acids in the liver phospholipids. In contrast, the liver of young rats fed active EPA-30 had large amounts of PE and concomitant enrichment in polyunsaturated fatty acids. The liver of old rats, fed on active EPA-30 supplemented diet had lower amounts of PE and there were no significant changes in the phospholipid fatty acid composition.
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