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Karger Publishers, Lifestyle Genomics, 5-6(10), p. 172-180, 2017

DOI: 10.1159/000486160

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Interaction of Vitamin E Intake and Pro12Ala Polymorphism of <b><i>PPARG</i></b> with Adiponectin Levels

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

<b><i>Background/Aim:</i></b> One of the beneficial effects associated with vitamin E intake is the enhancement of peroxisome proliferator-activated receptor gamma (PPARγ) activity and the consequent upregulation of adiponectin expression. The aim of this study was to analyze the adiponectin levels in subjects with the Pro12Ala polymorphism of <i>PPARG</i> according to vitamin E intake. <b><i>Methods:</i></b> A total of 283 subjects were enrolled. Total vitamin E intake was estimated based on a validated 3-day food consumption record and analyzed using Nutritionist Pro<sup>TM</sup> software. The Pro12Ala polymorphism (rs1801282) was determined by allelic discrimination. The adiponectin levels were measured by an ELISA assay. <b><i>Results:</i></b> Vitamin E intake was deficient in all subjects (1.50 ± 1.78 mg/day). Subjects with higher vitamin E intake levels and the Pro12Ala/Ala12Ala genotype had statistically significant higher levels of serum adiponectin than subjects with the Pro12Pro genotype (4.4 [3.2–5.7] vs. 2.7 [2.0–3.5] μg/mL; <i>p</i> = 0.024). <b><i>Conclusions:</i></b> Our results suggest that increased consumption of vitamin E should be encouraged since it has been reported that vitamin E promotes adiponectin expression via PPARγ activation. Subjects with Pro12Pro genotype had lower serum adiponectin levels than subjects with Pro12Ala/Ala12Ala genotype; therefore, they might be at higher risk of developing metabolic complications.