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J Rehabil Res Dev. 2005 Sep-Oct;42(5):625-34.

Effect of a vitamin D analog on leg bone mineral density in patients with chronic spinal cord injury.

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  • 1Department of Veterans Affairs (VA) Rehabilitation Research and Development Center of Excellence, VA Medical Center, Bronx, NY 10468, USA. wabauman@earthlink.net

Abstract

A randomized, placebo-controlled trial was performed to determine the effect of a vitamin D analog (1-alpha-hydroxyvitamin D(2) [1-alpha D(2)]) on the bone mineral density (BMD) in patients with chronic spinal cord injury (SCI). Forty subjects with chronic complete motor SCI were enrolled. The mean plus or minus standard deviation age and duration of injury were 42 plus or minus 12 yr and 11 plus or minus 10 yr, respectively. Either 4 micrograms 1-alpha D(2) (n = 19) or placebo (n = 21) was administered daily for 24 mo. Metabolic markers of bone resorption and formation were obtained. Regional lower-limb dual-energy x-ray absorptiometry was performed at baseline and at 6, 12, 18, and 24 mo. Leg BMD and percent change from baseline significantly increased at 6 (percent change only), 12, 18, and 24 mo in the treatment group, but not in the placebo group. Urinary N-telopeptide, a marker of bone resorption, was significantly reduced during treatment with 1-alpha D(2), but markers of bone formation were not changed.

PMID:
16586188
[PubMed - indexed for MEDLINE]
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