Dietary fatty acid intake is associated with paraoxonase 1 activity in a cohort-based analysis of 1,548 subjects

Lipids in Health and Disease

Research

Amber A Burt¹  Jane E Ranchalis¹  Sean K Maden¹  Gail P Jarvik²  Clement E Furlong²  Daniel Seung Kim² 

[1] Department of Medicine, Division of Medical Genetics, University of Washington School of Medicine, Box 357720, 98195-7720, Seattle, WA, USA;Department of Medicine, Division of Medical Genetics, University of Washington School of Medicine, Box 357720, 98195-7720, Seattle, WA, USA;Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA, USA;

关键词: Paraoxonase 1;    Dietary fatty acid intake;    Saturated fats;    Monounsaturated fats;    Polyunsaturated fats;    ω-3 fatty acids;    Cardiovascular disease;   

DOI  :  10.1186/1476-511X-12-183

 received in 2013-09-23, accepted in 2013-12-07,  发布年份 2013

来源: Springer

【 摘 要 】

BackgroundParaoxonase 1 (PON1) is a cardioprotective, HDL-associated glycoprotein enzyme with broad substrate specificity. Our previous work found associations between dietary cholesterol and vitamin C with PON1 activity. The goal of this study was to determine the effect of specific dietary fatty acid (DFA) intake on PON1 activity.Methods1,548 participants with paraoxonase activity measures completed the Harvard Standardized Food Frequency Questionnaire to determine their daily nutrient intake over the past year. Eight saturated, 3 monounsaturated, and 6 polyunsaturated DFAs were measured by the questionnaire. To reduce the number of observations tested, only specific fatty acids that were not highly correlated (r < 0.8) with other DFAs or that were representative of other DFAs through high correlation within each respective group (saturated, monounsaturated, or polyunsaturated) were retained for analysis. Six specific DFA intakes – myristic acid (14 carbon atoms, no double bonds – 14:0), oleic acid (18:1), gadoleic acid (20:1), α-linolenic acid (18:3), arachidonic acid (20:4), and eicosapentaenoic acid (20:5) – were carried forward to stepwise linear regression, which evaluated the effect of each specific DFA on covariate-adjusted PON1 enzyme activity.ResultsFour of the 6 tested DFA intakes – myristic acid (p = 0.038), gadoleic acid (p = 6.68 × 10-7), arachidonic acid (p = 0.0007), and eicosapentaenoic acid (p = 0.013) - were independently associated with covariate-adjusted PON1 enzyme activity. Myristic acid, a saturated fat, and gadoleic acid, a monounsaturated fat, were both positively associated with PON1 activity. Both of the tested polyunsaturated fats, arachidonic acid and eicosapentaenoic acid, were negatively associated with PON1 activity.ConclusionsThis study presents the largest cohort-based analysis of the relationship between dietary lipids and PON1 enzyme activity. Further research is necessary to elucidate and understand the specific biological mechanisms, whether direct or regulatory, through which DFAs affect PON1 activity.

【 授权许可】

Unknown   
© Kim et al.; licensee BioMed Central Ltd. 2013. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.