Revista médica de Chile
versión impresa ISSN 0034-9887
CAMPUSANO M, Claudia et al. Effects of low calcitonin doses on bone remodeling in postmenopausal women with high bone turnover rate. Rev. méd. Chile [online]. 2000, vol.128, n.4, pp. 387-391. ISSN 0034-9887. http://dx.doi.org/10.4067/S0034-98872000000400004.
Background: Calcitonin is specially indicated for the treatment of osteoporosis in women that cannot receive estrogen replacement therapy or that have a high bone turnover rate. Aim: To study the effects of low intranasal calcitonin doses on bone remodeling in postmenopausal women with a high bone turnover. Patients and methods: Forty one healthy women aged 56 ± 6 years old, with a mean lapse after menopause of 7.6 ± 6.5 years and with a high bone turnover rate, evidenced by an urinary hydroxyproline (mg/dl)/creatinine (g/dl) ratio of 52.4 ± 7.2, were studied. They were randomly assigned to receive 100 or 50 U/calcitonin thrice a week during 3 months or to a control group that received placebo. All received 500 mg/day calcium carbonate. Urinary hydroxyproline/creatinine ratio was measured a 0, 15, 30, 60 and 90 days. Plasma bone fraction of alkanine phosphatases was measured at 0, 30 and 90 days. Results: Initial urinary hydroxyproline/creatinine ratio and plasma bone fraction of alkanine phosphatases were similar in all study groups and there was no change in these parameters during the study period. Conclusions: Intranasal calcitonin in doses of 100 U thrice a week or less, does not modify accelerated bone turnover in postmenopausal women. (Rev Méd Chile 2000; 128: 387-91)
Palabras clave : Bone diseases, endocrine; Calcitonin; Hydroxyproline; Osteoporosis age-related.