Adiposity associated plasma linoleic acid is related to demographic, metabolic health and haplotypes of FADS1/2 genes in Irish adults

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dc.contributor.authorLi, Kaifeng
dc.contributor.authorBrennan, Lorraine
dc.contributor.authorBloomfield, Jack F.
dc.contributor.authorDuff, Dan J.
dc.contributor.authorMcNulty, Breige A.
dc.contributor.authorFlynn, Albert
dc.contributor.authorWalton, Janette
dc.contributor.authorGibney, Michael J.
dc.contributor.authorNugent, Anne P.
dc.contributor.funderDepartment of Agriculture, Food and the Marineen
dc.contributor.funderHealth Research Boarden
dc.contributor.funderChina Scholarship Councilen
dc.date.accessioned2018-02-13T10:08:12Z
dc.date.available2018-02-13T10:08:12Z
dc.date.issued2018-02-01
dc.date.updated2018-02-09T10:06:03Z
dc.description.abstractScope: This study examined to what extent plasma linoleic acid (LA) is modified by adiposity, and explored any association between plasma LA, demographics, dietary intakes, markers of metabolic health and haplotypes of the fatty acid desaturase (FADS) 1/2 genes. Methods and results: 820 participants with fasting blood samples from Irish National Adult Nutrition Survey were studied. Plasma fatty acids were determined using GC-MS. 15 SNPs of FADS 1/2 genes were genotyped. Plasma LA decreased while γ-linoleic acid and dihomo-γ-linoleic acid increased in overweight/obese participants (P ≤ 0.002). Participants in the highest quartile of plasma LA showed decreased plasma markers of de novo lipogenesis, insulin resistance and of inflammation (TNF-α, PAI-1) (P ≤ 0.005). Adiposity (waist circumference and body fat) was strongly inversely associated with plasma LA accounting for 11.8% of variance observed, which was followed by FADS1/2 haplotypes (3.9 %), quantity and quality of carbohydrate intakes (3.8 %), dietary PUFA intakes (3.7 %), systolic blood pressure (3.6 %) and age (3.2 %). Conclusion: Plasma LA was inversely associated with adiposity, followed by haplotypes of FADS1/2 genes, carbohydrate intakes and dietary PUFA intakes. The association observed between plasma LA and adiposity may be linked to decreased de novo lipogenesis, insulin resistance and inflammation.en
dc.description.sponsorshipDepartment of Agriculture, Food and the Marine / Health Research Board (Food for Health Research Initiative: Grant Number FHRIUCC2); China Scholarship Council (PhD studentship)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid1700785
dc.identifier.citationLi, K., Brennan, L., Bloomfield, J. F., Duff, D. J., McNulty, B. A., Flynn, A., Walton, J., Gibney, M. J. and Nugent, A. P. (2018) 'Adiposity associated plasma linoleic acid is related to demographic, metabolic health and haplotypes of FADS1/2 genes in Irish adults', Molecular Nutrition and Food Research, 62(7), 1700785 (10pp). doi:10.1002/mnfr.201700785en
dc.identifier.doi10.1002/mnfr.201700785
dc.identifier.endpage10
dc.identifier.issn1613-4133
dc.identifier.issued7
dc.identifier.journaltitleMolecular Nutrition and Food Researchen
dc.identifier.startpage1
dc.identifier.urihttps://hdl.handle.net/10468/5446
dc.identifier.volume62
dc.language.isoenen
dc.publisherJohn Wiley & Sons, Inc.en
dc.rights© 2018, John Wiley & Sons, Inc. All rights reserved. This is the peer reviewed version of the following article: Li, K., Brennan, L., Bloomfield, J. F., Duff, D. J., McNulty, B. A., Flynn, A., Walton, J., Gibney, M. J. and Nugent, A. P. (2018) 'Adiposity associated plasma linoleic acid is related to demographic, metabolic health and haplotypes of FADS1/2 genes in Irish adults', Molecular Nutrition and Food Research, which has been published in final form at https://doi.org/10.1002/mnfr.201700785. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.en
dc.subjectFADS1en
dc.subjectFADS2en
dc.subjectGenotypeen
dc.subjectLinoleic aciden
dc.titleAdiposity associated plasma linoleic acid is related to demographic, metabolic health and haplotypes of FADS1/2 genes in Irish adultsen
dc.typeArticle (peer-reviewed)en
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