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. 1989 Dec 15;264(3):909–915. doi: 10.1042/bj2640909

Molecular species composition of the major phospholipids in brain and retina from rainbow trout (Salmo gairdneri). Occurrence of high levels of di-(n-3)polyunsaturated fatty acid species.

M V Bell 1, D R Tocher 1
PMCID: PMC1133671  PMID: 2619717

Abstract

The molecular-species compositions of the diacyl classes of the major phospholipids from the brain and retina of rainbow trout (Salmo gairdneri) were determined. A total of 46 possible species was identified. Didocosahexaenoyl species were major components of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylserine (PS) from retina, comprising 14.1, 41.3 and 28.3% of the respective totals. This species was also abundant in PE and PS from brain, accounting for 14.9 and 19.9% of the totals respectively. Small amounts of di-polyunsaturated fatty acid species [C22:6(n-3) with C20:5(n-3), and C22:6(n-3) with C22:5(n-3)] were also found in these phospholipids. Phosphatidylinositol (PI) from both tissues contained no di-polyunsaturated fatty acid species. Retinal PI contained 40.1% C18:0-C20:4(n-6) with 14.9% of C18:0-C20:5(n-3); brain PI contained 42.3% of C18:0-C20:5 and 10.4% of C18:0-C20:4 species. Brain PC contained a substantial amount of nervonic acid-containing species with the pair C18:1-C24:1/C24:1-C18:1 comprising 8.9% of the total.

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Selected References

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