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Preventing postmenopausal bone loss with ossein-hydroxyapatite compounds. Results of a two-year, prospective trial
C Castelo-Branco1, F Pons, J J Vicente
1Department of Gynecology and Obstetrics, Hospital Clínic i Provincial, School of Medicine, University of Barcelona, Spain. castelo@medicina.ub.es
Objective:
To evaluate, in postmenopausal women who refuse hormone replacement therapy (HRT), whether continuous administration of an osseinhydroxyapatite compound (OHC) reduces bone loss and protects from osteoporosis.
Study Design:
Sixty postmenopausal women were included in an open study and were allocated to three groups. The first group (n = 19) received treatment consisting in 3.32 g/d of OHC per day, the second group (n = 21) received 2.5 g of calcium carbonate per day, and the third group (n = 20) was a treatment-free control group. Bone mineral density (BMD), assessed by dual x-ray absorptiometry, was measured prior to and at 12 and 24 months of treatment.
Results:
Subjects on OHC therapy did not show significant changes related to baseline on bone mass across the study, whereas a significant decrease was detected in the calcium carbonate group during the second year (-3.7%, P < .05) and in the control group at the first and second BMD measurement (-3.5%, P < .05; -5.6%, P < .01).
Conclusion:
Continuous administration of OHC prevents bone loss in postmenopausal women, suggesting that this drug may be useful in the management of postmenopausal bone loss.