Journal
PROSTAGLANDINS LEUKOTRIENES AND ESSENTIAL FATTY ACIDS
Volume 79, Issue 3-5, Pages 177-181Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.plefa.2008.09.007
Keywords
Linoleic acid; Arachidonic acid; Eicosanoid biosynthesis; Liquid formula diets; Diet
Funding
- Governmental Minister of Research and Technology of Germany [01ZU88052]
- Karl-Thiemig Stiftung zur Forderung von Kunst und Wissenschaft in Bayern, Munich
- Hflhnlein-Kurscheid Stiftung, Koln
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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. (c) 2008 Elsevier Ltd. All rights reserved.
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