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Association of Plasma Vitamin D Metabolites With Incident Type 2 Diabetes: EPIC-InterAct Case-Cohort Study.


ABSTRACT: BACKGROUND:Existing evidence for the prospective association of vitamin D status with type 2 diabetes (T2D) is focused almost exclusively on circulating total 25-hydroxyvitamin D [25(OH)D] without distinction between its subtypes: nonepimeric and epimeric 25(OH)D3 stereoisomers, and 25(OH)D2, the minor component of 25(OH)D. We aimed to investigate the prospective associations of circulating levels of the sum and each of these three metabolites with incident T2D. METHODS:This analysis in the European Prospective Investigation into Cancer and Nutrition (EPIC)-InterAct case-cohort study for T2D included 9671 incident T2D cases and 13,562 subcohort members. Plasma vitamin D metabolites were quantified by liquid chromatography-mass spectrometry. We used a multivariable Prentice-weighted Cox regression to estimate hazard ratios (HRs) of T2D for each metabolite. Analyses were performed separately within country, and estimates were combined across countries using random-effects meta-analysis. RESULTS:The mean concentrations (SD) of total 25(OH)D, nonepimeric 25(OH)D3, epimeric 25(OH)D3, and 25(OH)D2 were 41.1 (17.2), 40.7 (17.3), 2.13 (1.31), and 8.16 (6.52) nmol/L, respectively. Plasma total 25(OH)D and nonepimeric 25(OH)D3 were inversely associated with incident T2D [multivariable-adjusted HR per 1 SD = 0.81 (95% CI, 0.77, 0.86) for both variables], whereas epimeric 25(OH)D3 was positively associated [per 1 SD HR = 1.16 (1.09, 1.25)]. There was no statistically significant association with T2D for 25(OH)D2 [per 1 SD HR = 0.94 (0.76, 1.18)]. CONCLUSIONS:Plasma nonepimeric 25(OH)D3 was inversely associated with incident T2D, consistent with it being the major metabolite contributing to total 25(OH)D. The positive association of the epimeric form of 25(OH)D3 with incident T2D provides novel information to assess the biological relevance of vitamin D epimerization and vitamin D subtypes in diabetes etiology.

SUBMITTER: Zheng JS 

PROVIDER: S-EPMC6397435 | biostudies-other | 2019 Apr

REPOSITORIES: biostudies-other

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Association of Plasma Vitamin D Metabolites With Incident Type 2 Diabetes: EPIC-InterAct Case-Cohort Study.

Zheng Ju-Sheng JS   Imamura Fumiaki F   Sharp Stephen J SJ   van der Schouw Yvonne T YT   Sluijs Ivonne I   Gundersen Thomas E TE   Ardanaz Eva E   Boeing Heiner H   Bonet Catalina C   Gómez Jesus Humberto JH   Dow Courtney C   Fagherazzi Guy G   Franks Paul W PW   Jenab Mazda M   Kühn Tilman T   Kaaks Rudolf R   Key Timothy J TJ   Khaw Kay-Tee KT   Lasheras Cristina C   Mokoroa Olatz O   Mancini Francesca Romana FR   Nilsson Peter M PM   Overvad Kim K   Panico Salvatore S   Palli Domenico D   Rolandsson Olov O   Sieri Sabina S   Salamanca-Fernández Elena E   Sacerdote Carlotta C   Spijkerman Annemieke M W AMW   Stepien Magdalena M   Tjonneland Anne A   Tumino Rosario R   Butterworth Adam S AS   Riboli Elio E   Danesh John J   Langenberg Claudia C   Forouhi Nita G NG   Wareham Nicholas J NJ  

The Journal of clinical endocrinology and metabolism 20190401 4


<h4>Background</h4>Existing evidence for the prospective association of vitamin D status with type 2 diabetes (T2D) is focused almost exclusively on circulating total 25-hydroxyvitamin D [25(OH)D] without distinction between its subtypes: nonepimeric and epimeric 25(OH)D3 stereoisomers, and 25(OH)D2, the minor component of 25(OH)D. We aimed to investigate the prospective associations of circulating levels of the sum and each of these three metabolites with incident T2D.<h4>Methods</h4>This analy  ...[more]

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