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Int. J. Mol. Sci. 2018, 19(1), 180; doi:10.3390/ijms19010180

Effect of Omega-3 Fatty Acid Supplementation on Oxylipins in a Routine Clinical Setting

1
Medical Department, Division of Gastroenterology, Oncology, Hematology, Rheumatology and Diabetes, Ruppiner Kliniken, Brandenburg Medical School, 16816 Neuruppin, Germany
2
Department of Gastroenterology, Sana Klinikum Lichtenberg, 10365 Berlin, Germany
3
Medical Department, Division of Gastroenterology and Nephrology, Campus Virchow-Klinikum, Charité University Medicine, 13353 Berlin, Germany
4
Faculty of Mathematics and Natural Sciences, University of Wuppertal, 42119 Wuppertal, Germany
5
Institute for Food Toxicology, University for Veterinary Medicine Hannover, 30559 Hannover, Germany
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 3 January 2018 / Accepted: 4 January 2018 / Published: 8 January 2018
(This article belongs to the Special Issue Omega-3 Fatty Acids in Health and Disease: New Knowledge)
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Abstract

Omega-6 polyunsaturated fatty acid (n-6 PUFA) is the predominant polyunsaturated fatty acid (PUFA), especially in Western diet. A high omega-6/omega-3 ratio in Western diets is implicated in the development of cardiovascular diseases and inflammatory processes. Studies in animal models and in humans have demonstrated beneficial effects of omega-3 PUFA (n-3 PUFA) in a variety of diseases, including cardiac arrhythmias and inflammatory diseases, as well as breast and colon cancer. The molecular mechanisms underlying the effects of n-3 PUFA are still not well understood. Possible mechanisms include competition between n-3 and n-6 PUFAs at the cyclooxygenase (COX) and lipoxygenase (LOX) and cytochrome P450 levels, and subsequent formation of oxylipins with specific anti-inflammatory or anti-arrhythmic effects. In this study, we report the impact of routine long-term treatment with prescription-grade n-3 PUFA (either 840 mg or 1680 mg per day) on blood cell membrane fatty acid composition, as well as plasma oxylipin patterns, in a patient population with severe hyperlipidemia and cardiovascular disease who are on standard lipid-lowering and cardioprotective medications. Lipidomics analyses were performed by LC/ESI-MS/MS. Supplementation led to a dose-dependent increase in n-3 PUFA eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in the blood cell fraction. We also observed a dose-dependent increase in EPA- and DHA-derived epoxy metabolites, whereas the effect of n-3 PUFA supplementation on LOX-dependent EPA- and DHA-derived hydroxy metabolites was less pronounced, with a tendency towards lower metabolites in subjects with higher n-3 PUFA levels. These data thus generally confirm effects of n-3 PUFA supplementation observed previously in healthy individuals. Additionally, they indicate a suppressive effect of high n-3 PUFA supplementation on the formation of LOX metabolites in the context of concomitant aspirin medication. View Full-Text
Keywords: omega-3 fatty acids; oxylipins; lipidomics; lipid clinic; hyperlipidemia omega-3 fatty acids; oxylipins; lipidomics; lipid clinic; hyperlipidemia
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MDPI and ACS Style

Schmöcker, C.; Zhang, I.W.; Kiesler, S.; Kassner, U.; Ostermann, A.I.; Steinhagen-Thiessen, E.; Schebb, N.H.; Weylandt, K.-H. Effect of Omega-3 Fatty Acid Supplementation on Oxylipins in a Routine Clinical Setting. Int. J. Mol. Sci. 2018, 19, 180.

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