Distribution of variants in multiple vitamin D-related loci (DHCR7/NADSYN1, GC, CYP2R1, CYP11A1, CYP24A1, VDR, RXRα and RXRγ) vary between European, East-Asian and Sub-Saharan African-ancestry populations.

Polymorphism Skin pigmentation UVB Vitamin D

Journal

Genes & nutrition
ISSN: 1555-8932
Titre abrégé: Genes Nutr
Pays: Germany
ID NLM: 101280108

Informations de publication

Date de publication:
13 Mar 2020
Historique:
received: 17 09 2019
accepted: 28 02 2020
entrez: 15 3 2020
pubmed: 15 3 2020
medline: 15 3 2020
Statut: epublish

Résumé

The frequency of vitamin D-associated gene variants appear to reflect changes in long-term ultraviolet B radiation (UVB) environment, indicating interactions exist between the primary determinant of vitamin D status, UVB exposure and genetic disposition. Such interactions could have health implications, where UVB could modulate the impact of vitamin D genetic variants identified as disease risk factors. However, the current understanding of how vitamin D variants differ between populations from disparate UVB environments is limited, with previous work examining a small pool of variants and restricted populations only. Genotypic data for 46 variants within multiple vitamin D-related loci (DHCR7/NADSYN1, GC, CYP2R1, CYP11A1, CYP27A1, CYP24A1, VDR, RXRα and RXRγ) was collated from 60 sample sets (2633 subjects) with European, East Asian and Sub-Saharan African origin via the NCBI 1000 Genomes Browser and ALFRED (Allele Frequency Database), with the aim to examine for patterns in the distribution of vitamin D-associated variants across these geographic areas. The frequency of all examined genetic variants differed between populations of European, East Asian and Sub-Saharan African ancestry. Changes in the distribution of variants in CYP2R1, CYP11A1, CYP24A1, RXRα and RXRγ genes between these populations are novel findings which have not been previously reported. The distribution of several variants reflected changes in the UVB environment of the population's ancestry. However, multiple variants displayed population-specific patterns in frequency that appears not to relate to UVB changes. The reported population differences in vitamin D-related variants provides insight into the extent by which activity of the vitamin D system can differ between cohorts due to genetic variance, with potential consequences for future dietary recommendations and disease outcomes.

Sections du résumé

BACKGROUND BACKGROUND
The frequency of vitamin D-associated gene variants appear to reflect changes in long-term ultraviolet B radiation (UVB) environment, indicating interactions exist between the primary determinant of vitamin D status, UVB exposure and genetic disposition. Such interactions could have health implications, where UVB could modulate the impact of vitamin D genetic variants identified as disease risk factors. However, the current understanding of how vitamin D variants differ between populations from disparate UVB environments is limited, with previous work examining a small pool of variants and restricted populations only.
METHODS METHODS
Genotypic data for 46 variants within multiple vitamin D-related loci (DHCR7/NADSYN1, GC, CYP2R1, CYP11A1, CYP27A1, CYP24A1, VDR, RXRα and RXRγ) was collated from 60 sample sets (2633 subjects) with European, East Asian and Sub-Saharan African origin via the NCBI 1000 Genomes Browser and ALFRED (Allele Frequency Database), with the aim to examine for patterns in the distribution of vitamin D-associated variants across these geographic areas.
RESULTS RESULTS
The frequency of all examined genetic variants differed between populations of European, East Asian and Sub-Saharan African ancestry. Changes in the distribution of variants in CYP2R1, CYP11A1, CYP24A1, RXRα and RXRγ genes between these populations are novel findings which have not been previously reported. The distribution of several variants reflected changes in the UVB environment of the population's ancestry. However, multiple variants displayed population-specific patterns in frequency that appears not to relate to UVB changes.
CONCLUSIONS CONCLUSIONS
The reported population differences in vitamin D-related variants provides insight into the extent by which activity of the vitamin D system can differ between cohorts due to genetic variance, with potential consequences for future dietary recommendations and disease outcomes.

Identifiants

pubmed: 32169032
doi: 10.1186/s12263-020-00663-3
pii: 10.1186/s12263-020-00663-3
pmc: PMC7071568
doi:

Types de publication

Journal Article

Langues

eng

Pagination

5

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Auteurs

Patrice Jones (P)

School of Environmental & Life Sciences, University of Newcastle, 10 Chittaway Rd, Ourimbah, NSW, 2258, Australia. Patrice.Jones@newcastle.edu.au.
Hunter Medical Research Institute, New Lambton Heights, NSW, Australia. Patrice.Jones@newcastle.edu.au.

Mark Lucock (M)

School of Environmental & Life Sciences, University of Newcastle, 10 Chittaway Rd, Ourimbah, NSW, 2258, Australia.

George Chaplin (G)

Anthropology Department, The Pennsylvania State University, State College, Pennsylvania, USA.

Nina G Jablonski (NG)

Anthropology Department, The Pennsylvania State University, State College, Pennsylvania, USA.

Martin Veysey (M)

Hull-York Medical School, University of Hull, HU6 7RX, Hull, UK.

Christopher Scarlett (C)

School of Environmental & Life Sciences, University of Newcastle, 10 Chittaway Rd, Ourimbah, NSW, 2258, Australia.

Emma Beckett (E)

School of Environmental & Life Sciences, University of Newcastle, 10 Chittaway Rd, Ourimbah, NSW, 2258, Australia.
Hunter Medical Research Institute, New Lambton Heights, NSW, Australia.

Classifications MeSH