The Effect of Genistein Supplementation on Vitamin D Levels and Bone Turnover Markers during the Summer in Healthy Postmenopausal Women: Role of Genotypes of Isoflavone Metabolism.
María Pérez-Alonso, Laisa-Socorro Briongos, Marta Ruiz-Mambrilla, Eladio A Velasco, Lidia Linares, Luis Cuellar, José-Manuel Olmos, Daniel De Luis, Antonio Dueñas-Laita, José-Luis Pérez-Castrillón
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引用次数: 8
Abstract
Aims: The objective of this study was to determine whether vitamin D and genistein supplementation had an additive beneficial effect on levels of vitamin D and bone markers and whether this effect was mediated by genes regulating isoflavone metabolism.
Materials and methods: We carried out a prospective study in postmenopausal women randomized to calcium and vitamin D supplementation or calcium, vitamin D, and genistein supplementation. Vitamin D, parathyroid hormone (PTH), cross-linked C-telopeptide (CTX), and procollagen 1 N-terminal (P1NP) were determined by electrochemiluminescence. Three SNPs - rs2231142 (ABCG2), rs358231 (cytosolic β-glucosidase [CBG]), and rs2273697 (ABCC2) - were determined.
Results: We included 102 women. The effects on bone remodeling were similar: rises in vitamin D were significantly associated with reductions in PTH, CTX, and P1NP. Pharmacogenomic analysis of the genotypes showed that, in AT heterozygotes of the CBG1368T>A polymorphism, CTX and P1NP were not reduced.
Conclusion: Genistein added to calcium and vitamin D supplementation had no additional effect. The supplementation of individual AT heterozygotes of the CBG1368T>A polymorphism had no effect on markers of bone remodeling.
期刊介绍:
The emerging field of nutrigenetics and nutrigenomics is rapidly gaining importance, and this new international journal has been established to meet the needs of the investigators for a high-quality platform for their research. Endorsed by the recently founded "International Society of Nutrigenetics/Nutrigenomics", the ‘Journal of Nutrigenetics and Nutrigenomics’ welcomes contributions not only investigating the role of genetic variation in response to diet and that of nutrients in the regulation of gene expression, but is also open for articles covering all aspects of gene-environment interactions in the determination of health and disease.