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Nutrients 2017, 9(7), 649; doi:10.3390/nu9070649

Genome-Wide Association Study of Dietary Pattern Scores

Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Laval University, Québec, QC G1V 0A6, Canada
Endocrinology and Nephrology Unit, Centre de recherche du CHU de Québec, Laval University, Québec, QC G1V 4G2, Canada
Institute of Nutrition and Functional Foods (INAF), Endocrinology and Nephrology Unit, Centre de recherche du CHU de Québec, Laval University, Québec, QC G1V 4G2, Canada
Author to whom correspondence should be addressed.
Received: 13 April 2017 / Revised: 7 June 2017 / Accepted: 21 June 2017 / Published: 23 June 2017
(This article belongs to the Special Issue Nutrigenetics)
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Dietary patterns, representing global food supplies rather than specific nutrients or food intakes, have been associated with cardiovascular disease (CVD) incidence and mortality. The contribution of genetic factors in the determination of food intakes, preferences and dietary patterns has been previously established. The current study aimed to identify novel genetic factors associated with reported dietary pattern scores. Reported dietary patterns scores were derived from reported dietary intakes for the preceding month and were obtained through a food frequency questionnaire and genome-wide association study (GWAS) conducted in a study sample of 141 individuals. Reported Prudent and Western dietary patterns demonstrated nominal associations (p < 1 × 10−5) with 78 and 27 single nucleotide polymorphisms (SNPs), respectively. Among these, SNPs annotated to genes previously associated with neurological disorders, CVD risk factors and obesity were identified. Further assessment of SNPs demonstrated an impact on gene expression levels in blood for SNPs located within/near BCKDHB (p = 0.02) and the hypothalamic glucosensor PFKFB3 (p = 0.0004) genes, potentially mediated through an impact on the binding of transcription factors (TFs). Overrepresentations of glucose/energy homeostasis and hormone response TFs were also observed from SNP-surrounding sequences. Results from the current GWAS study suggest an interplay of genes involved in the metabolic response to dietary patterns on obesity, glucose metabolism and food-induced response in the brain in the adoption of dietary patterns. View Full-Text
Keywords: association study; dietary patterns; food preferences; Prudent; Western association study; dietary patterns; food preferences; Prudent; Western

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Guénard, F.; Bouchard-Mercier, A.; Rudkowska, I.; Lemieux, S.; Couture, P.; Vohl, M.-C. Genome-Wide Association Study of Dietary Pattern Scores. Nutrients 2017, 9, 649.

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