Abstract
In this manuscript, we review the literature on the nutrigenetics and pharmacogenetics of vitamin D pathways, with a focus on genes involved in the pharmacokinetic and pharmacodynamic pathways of vitamin D as they have been major research targets. These include: VDR, CYP2R1, CYP27B1, DHCR7/NADSYN1, GC and CYP24A1. So far only 2 genome wide associations studies evaluated the potential role of genetic polymorphisms in the variability in 25 hydroxy vitamin D (25(OH)D) levels. Most of the evidence is based on the candidate gene approach with some conflicting results when it comes to effect size and associating disease outcome with 25(OH)D levels and genetic polymorphisms. Moreover, very little has been done to look at the effect of significant polymorphisms on the response to vitamin D supplementation. Further research is needed on larger population samples of different ethnicities to resolve some of the controversies. In addition, emerging technologies such as next generation sequencing may be a better genotyping alternative in order to detect rare but potentially important genetic variants. Functional studies are also needed to better understand the association results. This includes coupling genotyping data with gene expression studies as well as epigenetic evaluations.
Keywords: Cytochrome P450, epigenetics, nutrigenetics, pharmacogenetics, vitamin D - 25(OH)D.
Current Pharmacogenomics and Personalized Medicine
Title:The Nutrigenetics and Pharmacogenetics of Vitamin D Pathways
Volume: 12 Issue: 2
Author(s): Zainab Awada, Safaa Ossaily and Nathalie K. Zgheib
Affiliation:
Keywords: Cytochrome P450, epigenetics, nutrigenetics, pharmacogenetics, vitamin D - 25(OH)D.
Abstract: In this manuscript, we review the literature on the nutrigenetics and pharmacogenetics of vitamin D pathways, with a focus on genes involved in the pharmacokinetic and pharmacodynamic pathways of vitamin D as they have been major research targets. These include: VDR, CYP2R1, CYP27B1, DHCR7/NADSYN1, GC and CYP24A1. So far only 2 genome wide associations studies evaluated the potential role of genetic polymorphisms in the variability in 25 hydroxy vitamin D (25(OH)D) levels. Most of the evidence is based on the candidate gene approach with some conflicting results when it comes to effect size and associating disease outcome with 25(OH)D levels and genetic polymorphisms. Moreover, very little has been done to look at the effect of significant polymorphisms on the response to vitamin D supplementation. Further research is needed on larger population samples of different ethnicities to resolve some of the controversies. In addition, emerging technologies such as next generation sequencing may be a better genotyping alternative in order to detect rare but potentially important genetic variants. Functional studies are also needed to better understand the association results. This includes coupling genotyping data with gene expression studies as well as epigenetic evaluations.
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Cite this article as:
Awada Zainab, Ossaily Safaa and Zgheib K. Nathalie, The Nutrigenetics and Pharmacogenetics of Vitamin D Pathways, Current Pharmacogenomics and Personalized Medicine 2014; 12 (2) . https://dx.doi.org/10.2174/1875692112666140529002223
DOI https://dx.doi.org/10.2174/1875692112666140529002223 |
Print ISSN 1875-6921 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6913 |
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