The impact of vitamin D supplementation on VDR gene expression and body composition in monozygotic twins: randomized controlled trial

Jeane Franco Pires Medeiros, Michelle Vasconcelos de Oliveira Borges, Aline Alves Soares, Jessica Cavalcante Dos Santos, Ana Beatriz Bezerra de Oliveira, Conceição Horrana Belo da Costa, Marina Sampaio Cruz, Raul Hernandes Bortolin, Renata Caroline Costa de Freitas, Paulo Moreira Silva Dantas, Mario Hiroyuki Hirata, Vivian Nogueira Silbiger, André Ducati Luchessi
Scientific Reports 2020 July 20, 10 (1): 11943
Vitamin D supplementation is widely used. However, there is no consensus on the use and dosage of this supplement and the existing recommendations arise from studies based on the benefits that this nutrient can facilitate in bones. In addition, individual genetics can influence the response to supplementation, therefore, research involving monozygotic twins aims to reduce these differences in phenotypic responses. The objective of this randomised controlled study is to examine the effect of vitamin D supplementation on body composition and the expression of the vitamin D receptor (VDR) mRNA. An intervention was performed through supplementation with cholecalciferol at the concentration of 2000 IU in 90 healthy adult monozygotic twins (male or female pairs) for 2 months. The findings showed that serum vitamin D concentration increased by 65% and VDR gene expression sixty times (p = 0.001). Changes in body composition parameters were observed regarding body fat and lean mass. Our results indicate that an increase in serum vitamin D concentration may have potential therapeutic implications.

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