Measurements of the Vitamin D Metabolome in the Calgary Vitamin D Study : Relationship of Vitamin D Metabolites to Bone Loss

© 2023 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR)..

In a 36-month randomized controlled trial examining the effect of high-dose vitamin D3 on radial and tibial total bone mineral density (TtBMD), measured by high-resolution peripheral quantitative tomography (HR-pQCT), participants (311 healthy males and females aged 55-70 years with dual-energy X-ray absorptiometry T-scores > -2.5 without vitamin D deficiency) were randomized to receive 400 IU (N = 109), 4000 IU (N = 100), or 10,000 IU (N = 102) daily. Participants had HR-pQCT radius and tibia scans and blood sampling at baseline, 6, 12, 24, and 36 months. This secondary analysis examined the effect of vitamin D dose on plasma measurements of the vitamin D metabolome by liquid chromatography-tandem mass spectrometry (LC-MS/MS), exploring whether the observed decline in TtBMD was associated with changes in four key metabolites [25-(OH)D3 ; 24,25-(OH)2 D3 ; 1,25-(OH)2 D3 ; and 1,24,25-(OH)3 D3 ]. The relationship between peak values in vitamin D metabolites and changes in TtBMD over 36 months was assessed using linear regression, controlling for sex. Increasing vitamin D dose was associated with a marked increase in 25-(OH)D3 , 24,25-(OH)2 D3 and 1,24,25-(OH)3 D3 , but no dose-related change in plasma 1,25-(OH)2 D3 was observed. There was a significant negative slope for radius TtBMD and 1,24,25-(OH)3 D3 (-0.05, 95% confidence interval [CI] -0.08, -0.03, p < 0.001) after controlling for sex. A significant interaction between TtBMD and sex was seen for 25-(OH)D3 (female: -0.01, 95% CI -0.12, -0.07; male: -0.04, 95% CI -0.06, -0.01, p = 0.001) and 24,25-(OH)2 D3 (female: -0.75, 95% CI -0.98, -0.52; male: -0.35, 95% CI -0.59, -0.11, p < 0.001). For the tibia there was a significant negative slope for 25-(OH)D3 (-0.03, 95% CI -0.05, -0.01, p < 0.001), 24,25-(OH)2 D3 (-0.30, 95% CI -0.44, -0.16, p < 0.001), and 1,24,25-(OH)3 D3 (-0.03, 95% CI -0.05, -0.01, p = 0.01) after controlling for sex. These results suggest vitamin D metabolites other than 1,25-(OH)2 D3 may be responsible for the bone loss seen in the Calgary Vitamin D Study. Although plasma 1,25-(OH)2 D3 did not change with vitamin D dose, it is possible rapid catabolism to 1,24,25-(OH)3 D3 prevented the detection of a dose-related rise in plasma 1,25-(OH)2 D3 . © 2023 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).

Errataetall:

CommentIn: J Bone Miner Res. 2024 Mar 4;39(1):1-2. - PMID 38630885

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:38

Enthalten in:

Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research - 38(2023), 9 vom: 12. Sept., Seite 1312-1321

Sprache:

Englisch

Beteiligte Personen:

Burt, Lauren A [VerfasserIn]
Kaufmann, Martin [VerfasserIn]
Rose, Marianne S [VerfasserIn]
Jones, Glenville [VerfasserIn]
Billington, Emma O [VerfasserIn]
Boyd, Steven K [VerfasserIn]
Hanley, David A [VerfasserIn]

Links:

Volltext

Themen:

1406-16-2
1C6V77QF41
BONE DENSITY
Cholecalciferol
Ergocalciferols
Journal Article
LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
VITAMIN D
Vitamin D

Anmerkungen:

Date Completed 25.09.2023

Date Revised 17.04.2024

published: Print-Electronic

CommentIn: J Bone Miner Res. 2024 Mar 4;39(1):1-2. - PMID 38630885

Citation Status MEDLINE

doi:

10.1002/jbmr.4876

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM359109403