Genetic and non-genetic correlates of vitamins K and D

M. K. Shea, E. J. Benjamin, J. Dupuis, J. M. Massaro, P. F. Jacques, R. B. D'Agostino, J. M. Ordovas, C. J. O'Donnell, B. Dawson-Hughes, R. S. Vasan, S. L. Booth

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190 Citas (Scopus)

Resumen

Objective: To assess the genetic and nongenetic correlates of circulating measures of vitamins K and D status in a community-based sample of men and women. Subjects/Methods: A cross-sectional study of 1762 participants of the Framingham Offspring Study (919 women; mean age 59 years). Vitamin K status was measured as plasma phylloquinone and serum percent undercarboxylated osteocalcin (ucOC), and vitamin D was measured using plasma 25-hydroxyvitamin D (25(OH)D). Associations between vitamin K status and vitamin D status with biologically plausible nongenetic factors were assessed using stepwise regression. Heritability and linkage were determined using Sequential Oligogenic Linkage Analysis Routines (SOLAR). Results: Nongenetic factors accounted for 20.1 and 12.3% of the variability in plasma phylloquinone in men and women respectively, with triglycerides and phylloquinone intake being the primary correlates. In men 12.2% and in women 14.6% of the variability in %ucOC was explained by nongenetic factors in our models. Heritability estimates for these vitamin K status biomarkers were nonsignificant. Season, vitamin D intake, high-density lipoprotein (HDL) cholesterol and waist circumference explained 24.7% (men) and 24.2% (women) of the variability in plasma 25(OH)D. Of the three vitamins examined, only 25(OH)D was significantly heritable (heritability estimate=28.8%, P<0.01), but linkage analysis of 25(OH)D did not achieve genome-wide significance. Conclusions: Variability in biomarkers of vitamin K status was attributed to nongenetic factors, whereas plasma 25(OH)D was found to be significantly heritable. Further studies are warranted to investigate genetic loci influencing vitamin D status.

Idioma originalEnglish (US)
Páginas (desde-hasta)458-464
Número de páginas7
PublicaciónEuropean Journal of Clinical Nutrition
Volumen63
N.º4
DOI
EstadoPublished - 2009
Publicado de forma externa

ASJC Scopus subject areas

  • Nutrition and Dietetics
  • Medicine (miscellaneous)

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