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Vitamin D receptor gene polymorphisms are associated with adiposity phenotypes.

ABSTRACT: Emerging data suggest a role for the vitamin D receptor (VDR) in lipogenesis and adipocyte differentiation.Our objective was to evaluate the association of VDR gene variants and adiposity phenotypes in an epidemiologic study.In a sample of 1773 healthy female adults recruited from western New York, we tested for the association of 14 VDR single nucleotide polymorphisms (SNPs) with the following 3 adiposity phenotypes: body mass index (in kg/m²), waist circumference (in cm), and abdominal height (in cm). We examined age, education, total energy intake, smoking status, alcohol intake, and menopausal status as potential covariates.One SNP, rs3782905, remained associated with all 3 adiposity phenotypes after multiple-testing correction (Bonferroni-adjusted P = 0.004). The mean waist circumference for women with the rs3782905 homozygous rare genotype was 4.4 cm larger than for women with the common homozygous genotype. Two other VDR SNPs were associated with waist circumference and abdominal height, but the associations did not survive multiple-testing correction. Adjustment for covariates did not influence the results.The study results and the biological activity of VDR in adipocyte differentiation suggest that 3' VDR variants may play a role in adiposity phenotypes.

SUBMITTER: Ochs-Balcom HM

PROVIDER: S-EPMC3001595 | biostudies-literature | 2011 Jan

REPOSITORIES: biostudies-literature

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Vitamin D receptor gene polymorphisms are associated with adiposity phenotypes.

Ochs-Balcom Heather M HM Chennamaneni Raj R Millen Amy E AE Shields Peter G PG Marian Catalin C Trevisan Maurizio M Freudenheim Jo L JL

The American journal of clinical nutrition 20101103 1

<h4>Background</h4>Emerging data suggest a role for the vitamin D receptor (VDR) in lipogenesis and adipocyte differentiation.<h4>Objective</h4>Our objective was to evaluate the association of VDR gene variants and adiposity phenotypes in an epidemiologic study.<h4>Design</h4>In a sample of 1773 healthy female adults recruited from western New York, we tested for the association of 14 VDR single nucleotide polymorphisms (SNPs) with the following 3 adiposity phenotypes: body mass index (in kg/m²) ...[more]

PMID: 21048058

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Project description:We examined longitudinal associations of vitamin D receptor (VDR) and megalin (LRP2; LDL receptor-related protein-2) gene polymorphisms with central adiposity. We used data from the Baltimore Longitudinal Study of Aging (BLSA), an ongoing prospective open cohort study. Study participants consisted of non-Hispanic white adults residing in Baltimore city, with one or more visits at age ≥50 years, and complete data (n 609-617). Repeated assessments on waist circumference (WC) and waist:hip ratio (WHR) were available. Multiple linear mixed models were used to estimate mid-follow-up age central adiposity level and annual rate of change with cut-points set at the sex-specific 80th percentile. The four binary outcomes were: 'elevated central adiposity' (ECA-WC and ECA-WHR) and 'significant increase in central adiposity' (SICA-WC and SICA-WHR). SNP for VDR (four SNP: (1) rs11568820 (CdX-2:T/C); (2) rs1544410 (BsmI:G/A); (3) rs7975232 (ApaI:A/C); (4) rs731236 (TaqI:G/A)) and Megalin (three SNP: (1) rs3755166:G/A; (2) rs2075252:C/T; (3) rs4668123:C/T) genes were selected. SNP latent classes (SNPLC) and SNP haplotypes (SNPHAP) were created. Multiple logistic regression analyses indicated that, in men, higher ECA-WHR odds were associated with SNPLC Megalin2:rs3755166[-]/rs2075252[TT]/rs4668123[T-] (v. Megalin1:rs3755166[-]/rs2075252[CC]/rs4668123[-]) (OR 2·87; 95 % CI 1·15, 7·12; P = 0·023) and that SNPLC Megalin3:rs3755166[-]/rs2075252[CT]/rs4668123[-] (v. Megalin1) was linked to lower SICA-WC odds (OR 0·48; 95 % CI 0·26, 0·88; P = 0·019) (P > 0·05 for sex × SNPLC). In women, VDR3 SNPHAP (GAA:bAT) was related to lower odds of ECA-WC (OR 0·37; 95 % CI 0·16, 0·87; P = 0·023) (P < 0·05 for sex × SNPHAP), VDR1 SNPHAP (GCA:baT) was associated with greater odds and VDR3 SNPHAP (GAA:bAT) with lower odds of SICA-WC (P > 0·05 for sex × SNPHAP). Vitamin D-related gene polymorphisms were associated with central adiposity status and change. Future mechanistic studies are needed to confirm those polymorphisms' biological significance to central adiposity.

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Vitamin D receptor gene polymorphisms are associated with adiposity phenotypes.

Publications

Vitamin D receptor gene polymorphisms are associated with adiposity phenotypes.

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