Vitamin D Research Today is a free monthly online journal that collates and summarizes the latest research about Vitamin D, including details on sources, melanin, benefits, deficiency, supplements, calcium absorption.

A new active vitamin D, ED-71, increases bone mass in osteoporotic patients under vitamin D supplementation: a randomized, double-blind, placebo-controlled clinical trial.

Matsumoto T, Miki T, Hagino H, Sugimoto T, Okamoto S, Hirota T, Tanigawara Y, Hayashi Y, Fukunaga M, Shiraki M, Nakamura T

Department of Medicine and Bioregulatory Sciences, University of Tokushima Graduate School of Health Biosciences, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan. toshimat@clin.med.tokushima-u.ac.jp

CONTEXT: ED-71 has been shown to increase lumbar bone mineral density (BMD) in osteoporotic subjects. However, vitamin D insufficiency might have influenced the effect of ED-71 on BMD. OBJECTIVE: Our objective was to examine whether ED-71 can increase BMD in osteoporotic patients under vitamin D supplementation. DESIGN, SETTING, AND PATIENTS: We conducted a randomized, double-blind, placebo-controlled clinical trial of 219 osteoporotic patients (49-87 yr of age). Interventions: Subjects were randomly assigned to receive placebo or 0.5, 0.75, or 1.0 microg/d ED-71 for 12 months. All the subjects received 200 or 400 IU/d vitamin D(3). MAIN OUTCOME MEASURES: We assessed changes in lumbar and hip BMD and bone turnover markers from baseline. RESULTS: Lumbar BMD increased with ED-71 treatment for 12 months (2.2, 2.6, and 3.1% from baseline and 2.9, 3.4, and 3.8% vs. placebo group in subjects receiving 0.5, 0.75, and 1.0 microg ED-71, respectively). Total hip BMD also increased with 0.75 and 1.0 microg ED-71 (-0.8, 0.6, and 0.9% from baseline and 0.1, 1.5, and 1.8% vs. placebo group in the 0.5, 0.75, and 1.0 microg ED-71 groups, respectively). Bone formation and resorption markers were suppressed by approximately 20% after 12 months of 0.75 and 1.0 microg ED-71 treatment. Transient hypercalcemia over 2.6 mmol/liter occurred in 7, 5, and 23% of subjects in the 0.5, 0.75, and 1.0 microg ED-71 groups, respectively, but none of them developed sustained hypercalcemia. CONCLUSIONS: These results demonstrate that ED-71 treatment at around 0.75 microg/d can effectively and safely increase lumbar and hip BMD in osteoporotic patients with vitamin D supplementation.

Published 8 September 2005 in J Clin Endocrinol Metab, 90(9): 5031-6.
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