Effect of calcitonin and vitamin D in osteoporosis

Calcified Tissue International
G M PalmieriL J Roen

Abstract

Vitamin D has complex effects in bone: it stimulates matrix formation and bone maturation but also enhances osteoclastic activity and may influence differentiation of bone cell precursors. Calcitonin inhibits the function of osteoclasts, reducing bone resorption, thus, the combination of vitamin D and calcitonin could result in a positive bone balance. We tested the hypothesis that chronic treatment with high doses of vitamin D (150,000 U/week), moderate doses of salmon calcitonin (120 MRC U/week), and adequate Ca supplementation (1 g/day) could be beneficial in osteoporosis. Thirteen women with postmenopausal osteoporosis received this treatment for 2-6 years (mean 3.5 years). No side effects, hypercalcemia, or hypercalciuria occurred. There was marked reduction in bone pain. The fracture rate in 11 patients with vertebral compression fracture was 240/1,000 patient years, threefold lower than the reported 834 fractures for untreated patients of similar age. Single photon bone densitometry of the radius did not change. Iliac crest bone biopsies obtained at the initiation and conclusion of the study showed a 43% increment in trabecular bone volume (P = 0.0003), without changes of the normal osteoid thickness, surface, and volume...Continue Reading

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Citations

Apr 1, 1996·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·M C Monier-FaugereH H Malluche
May 1, 1993·Calcified Tissue International·S WallachL Brenner-Gati
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