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Effect of Vitamin D Supplementation on Bone Mineral Density in Rheumatoid Arthritis Patients With Osteoporosis.


ABSTRACT: Objectives: To assess the effect of vitamin D supplementation on bone mineral density (BMD) in rheumatoid arthritis (RA) patients with osteoporosis and determine whether supplementation of more than 800 IU/day, which is the currently recommended dose, is beneficial. Methods: RA patients with osteoporosis who received bisphosphonate were included. Patients were classified into four groups according to the dose of vitamin D supplementation (0, 400, 800, and ?1,000 IU/day). Multivariable linear regression models were performed to evaluate the effect of each dose of vitamin D supplementation on 1-year% change of BMD. Results: In total, 187 RA patients with osteoporosis were included. In the multivariate model adjusted for potential confounders, patients receiving vitamin D supplementation had a significantly higher increase in 1-year % change in lumbar spine BMD (400 IU/day: ? = 2.51 [95% CI: 0.04-4.99], 800 IU/day: ? = 2.90 [95% CI: 0.47-5.33], and ?1,000 IU/day: ? = 6.01 [95% CI: 3.71-8.32]) and femoral neck BMD (400 IU/day: ? = 3.88 [95% CI: 1.83-5.94], 800 IU/day: ? =4.30 [95% CI: 2.25-6.35], and ?1,000 IU/day: ? = 6.79 [95% CI: 4.87-8.71]) than those not receiving the supplementation. Notably, the ?1,000-IU/day group had a significantly higher increase in 1-year % change in lumbar spine BMD (? = 3.11 [95% CI: 0.86-5.37]) and femoral neck BMD (? = 2.50 [95% CI: 0.63-4.36]) than the 800-IU/day group. Conclusion: In RA patients with osteoporosis receiving bisphosphonates, vitamin D supplementation was associated with a higher increase in BMD. This effect was higher in the vitamin D supplementation dose of ?1,000 IU/day than in 800 IU/day.

SUBMITTER: Kwon OC 

PROVIDER: S-EPMC7473387 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Effect of Vitamin D Supplementation on Bone Mineral Density in Rheumatoid Arthritis Patients With Osteoporosis.

Kwon Oh Chan OC   Oh Ji Seon JS   Park Min-Chan MC   Kim Yong-Gil YG  

Frontiers in medicine 20200821


<b>Objectives:</b> To assess the effect of vitamin D supplementation on bone mineral density (BMD) in rheumatoid arthritis (RA) patients with osteoporosis and determine whether supplementation of more than 800 IU/day, which is the currently recommended dose, is beneficial. <b>Methods:</b> RA patients with osteoporosis who received bisphosphonate were included. Patients were classified into four groups according to the dose of vitamin D supplementation (0, 400, 800, and ≥1,000 IU/day). Multivaria  ...[more]

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