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Open Access Green as soon as Postprint is submitted to ZB.
Association between erythrocyte membrane fatty acids and biomarkers of dyslipidemia in the EPIC-Potsdam study.
Eur. J. Clin. Nutr. 68, 517-525 (2014)
Background/objective:Blood proportions of fatty acids (FAs) and FA-ratios reflecting desaturase activity are associated with the risk of chronic diseases like type 2 diabetes mellitus or cardiovascular diseases. Biomarkers of dyslipidemia are considered as potential mediators of this association. We evaluated associations of erythrocyte membrane proportions of individual disease-related polyunsaturated fatty acids (PUFAs), trans-FAs, dairy-derived saturated FAs (SFAs) (15:0, 17:0) and FA-ratios with biomarkers of dyslipidemia (high-density lipoprotein (HDL)-cholesterol, low-density lipoprotein (LDL)-cholesterol, non-HDL-cholesterol, triglycerides).Subjects/methods:We conducted a cross-sectional analysis of a subsample (n=1759) of the European Prospective Investigation into Cancer and Nutrition (EPIC)-Potsdam study. Associations of individual FAs and FA-ratios with plasma biomarkers of dyslipidemia were evaluated by linear multivariable regression.Results:Most notably, FA-ratios reflecting activity of Δ6-desaturase (D6D) and stearoyl-coenzyme A-desaturase (SCD) were positively associated with triglyceride and LDL-cholesterol concentrations (adjusted means (95% confidence interval (CI)) of triglycerides (mg/dl) across D6D tertiles: men-102 (94.7-110), 111 (104-120), 144 (134-156) and women-73.5 (70.0-77.2), 82.9 (79.0-86.9), 94.2 (89.7-98.9)); across SCD tertiles: men-99.0 (91.8-107), 115 (107-124), 144 (134-156) and women-72.4 (69.0-76.0), 81.5 (77.8-85.5), 97.2 (92.6-102)), whereas inverse associations with triglycerides were observed for the estimated Δ5-desaturase (D5D) activity (adjusted means (95% CI) of triglycerides (mg/dl) across D5D tertiles: men-128 (119-138), 121 (113-131), 106 (97.9-114) and women-92.0 (87.6-96.6), 82.8 (78.9-86.9), 75.3 (71.6-79.1), P-values for trend at least 0.0006). Furthermore, we observed generally weaker and less consistent associations of dairy-derived SFAs (mainly 17:0) with triglycerides and HDL-cholesterol. Individual PUFAs and trans-FAs were, if at all, only weakly associated with dyslipidemia markers.Conclusions:Our findings suggest that triglyceride and LDL-cholesterol concentrations may be mediators that link intake and metabolism of FAs to metabolic risk.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Coronary-heart-disease; Density-lipoprotein Cholesterol; Cardiovascular Risk-factors; Trans-palmitoleic Acid; Adipose-tissue; Milk-fat; Myocardial-infarction; Desaturase Activity; Diabetes-mellitus; Blood-pressure
ISSN (print) / ISBN
0954-3007
e-ISSN
1476-5640
Quellenangaben
Volume: 68,
Issue: 4,
Pages: 517-525
Publisher
Nature Publishing Group
Publishing Place
London
Non-patent literature
Publications
Reviewing status
Peer reviewed