The Role of VDR Gene Polymorphisms in Vitamin D Supplementation

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The vitamin D receptor (VDR) is a nuclear transcriptional regulator that activates by binding to 1a,25-dihydroxycholecalciferol (1a,25(OH)2D), known as calcitriol, which forms a heterodimer with the retinoid X receptor (RXR). Calcitriol signalling plays a role in many biological effects that include the metabolism of calcium and phosphorous and www.oldetowntimes.net/sims-4-debug-cheat-codes-get-the-most-out-of-your-game/ parathormone release. It also plays a role in cell expansion and control of innate and adaptive immunity.

A T > C base shift in the promoter region of VDR variant rs11568820 obliterates the binding site for the transcription factor Cdx2 upstream of exon 1e. This causes to the production of a less sized protein with decreased transcriptional activity. The F allele of this variant is observed at a high frequency in Asians and Europeans and at a lower frequency in Sub-Saharan Africa.

The findings of this study enhance our understanding of the role VDR gene polymorphisms could influence the response to diet supplementation with calcium calcitriol. Carriers of the TaqI and FF genotypes of the FokI polymorphisms show higher transcriptional activation and are associated with better calcium absorption, increased bone mineral density, and a reduced risk of breaking. To increase our understanding of the role these genetic variants have in vitamin D supplementation We must conduct more research with an homogeneous design.

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