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Osteoporosis International

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01.04.2010 | Original Article

In osteoporotic women treated with strontium ranelate, strontium is located in bone formed during treatment with a maintained degree of mineralization

verfasst von: G. Boivin, D. Farlay, M. T. Khebbab, X. Jaurand, P. D. Delmas, P. J. Meunier

Erschienen in: Osteoporosis International | Ausgabe 4/2010

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Abstract

Summary

In postmenopausal osteoporotic women and up to 3 years of treatment with strontium ranelate, strontium was present only in recently deposited bone tissue resulting from formation activity during the period of treatment. Strontium was shown to be dose-dependently deposited into this newly formed bone with preservation of the mineralization.

Introduction

Interactions between strontium (Sr) and bone mineral and its effects on mineralization were investigated in women treated with strontium ranelate.

Methods

Bone biopsies from osteoporotic women were obtained over 5-year strontium ranelate treatment from phases II and III studies. Bone samples obtained over 3-year treatment were investigated by X-ray microanalysis for bone Sr uptake and focal distribution, and by quantitative microradiography for degree of mineralization. On some samples, Sr distribution (X-ray cartography) was analyzed on whole sample surfaces and the percentage of bone surface containing Sr was calculated. Bone Sr content was chemically measured on whole samples.

Results

In treated women, Sr was exclusively present in bone formed during treatment; Sr deposition depended on the dose with higher focal content in new bone structural units than in old ones constantly devoid of Sr, even after 3-year treatment. A plateau in global bone Sr content was reached after 3 years of treatment. Cartography illustrated the extent of surfaces containing Sr, and formation activity during strontium ranelate treatment was higher in cancellous than in cortical bone. Mineralization was maintained during treatment.

Conclusion

The quality of bone mineral was preserved after treatment with strontium ranelate, supporting the safety of this agent at the bone tissue level.

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Titel: In osteoporotic women treated with strontium ranelate, strontium is located in bone formed during treatment with a maintained degree of mineralization
verfasst von: G. Boivin
D. Farlay
M. T. Khebbab
X. Jaurand
P. D. Delmas
P. J. Meunier
Publikationsdatum: 01.04.2010
Verlag: Springer-Verlag
Erschienen in: Osteoporosis International / Ausgabe 4/2010
Print ISSN: 0937-941X
Elektronische ISSN: 1433-2965
DOI: https://doi.org/10.1007/s00198-009-1005-z

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Springer Medizin

In osteoporotic women treated with strontium ranelate, strontium is located in bone formed during treatment with a maintained degree of mineralization

Abstract

Summary

Introduction

Methods

Results

Conclusion

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Results

Conclusion

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