Adam O, Tesche A, Wolfram G. Impact of linoleic acid intake on arachidonic acid formation and eicosanoid biosynthesis in humans.
Prostaglandins Leukot Essent Fatty Acids 2008;
79:177-81. [PMID:
18973995 DOI:
10.1016/j.plefa.2008.09.007]
[Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
UNLABELLED
Long-chain conversion of linoleic acid (LA) and eicosanoid formation was followed in 6 healthy females who were given for 6 weeks liquid formula diets which contained no arachidonic acid but, for 2 weeks each, a LA supply of 0 energy% (en%), 4 en%, and 20 en%, respectively.
RESULTS
higher LA intake resulted in higher LA percentages in investigated lipids, but not in higher amounts of LA present in plasma cholesterol esters or phosphatidylcholine of LDL and HDL comparing liquid formula diet (LFD) 4 and LFD 20. A higher intake of LA resulted in a decrease of arachidonic acid, which was most prominent in HDL phosphatidycholine. Eicosanoids derived from cyclo-oxygenase activity were unchanged by LA intake, while an increase of cytochrome P450-dependent tetranorprostanedioic acid formation was observed with LFD 20.
CONCLUSION
LA intake of 4 en% appears to be a recommendable intake, without signs of stimulated eicosanoid biosynthesis or oxidation.
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