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Erschienen in: Osteoporosis International 1/2008

01.01.2008 | Original Article

Effect of raloxifene after recombinant teriparatide [hPTH(1–34)] treatment in postmenopausal women with osteoporosis

verfasst von: S. Adami, J. San Martin, M. Muñoz-Torres, M. J. Econs, L. Xie, G. P. Dalsky, M. McClung, D. Felsenberg, J. P. Brown, M. L. Brandi, A. Sipos

Erschienen in: Osteoporosis International | Ausgabe 1/2008

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Abstract

Summary

Loss of bone mineral density occurs after discontinuation of teriparatide, if no subsequent treatment is given. Sequential raloxifene prevented rapid bone loss at lumbar spine and further increased bone mineral density (BMD) at femoral neck, whether raloxifene was started immediately or after a one-year delay following teriparatide treatment.

Introduction

We compared the sequential effects of raloxifene treatment with a placebo on teriparatide-induced increases in bone mineral density (BMD). A year of open-label raloxifene extended the study to assess the response with and without delay after discontinuation of teriparatide.

Methods

Following a year of open-label teriparatide 20 μg/day treatment, postmenopausal women with osteoporosis were randomly assigned to raloxifene 60 mg/day (n = 157) or a placebo (n = 172) for year 2, followed by a year of open-label raloxifene. BMD was measured by dual energy x-ray absorptiometry.

Results

The raloxifene and placebo groups showed a decrease in lumbar spine (LS) BMD in year 2 for raloxifene and placebo groups (−1.0 ± 0.3%, P = 0.004; and −4.0 ± 0.3%, P < 0.001, respectively); the decrease was less with raloxifene (P < 0.001). Open-label raloxifene treatment reversed the LS BMD decrease with a placebo, resulting in similar decreases 2 years after randomization (−2.6 ± 0.4% (raloxifene-raloxifene) and −2.7 ± 0.4% (placebo-placebo). At study end, LS and femoral neck (FN) BMD were higher than pre-teriparatide levels, with no significant differences between the raloxifene-raloxifene and placebo-raloxifene groups, respectively (LS: 6.1 ± 0.5% vs. 5.1 ± 0.5%; FN: 3.4 ± 0.6% vs. 3.0 ± 0.5%).

Conclusion

Sequential raloxifene prevented rapid bone loss at the LS and increased FN BMD whether raloxifene was started immediately or after a one-year delay following teriparatide treatment.
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Metadaten
Titel
Effect of raloxifene after recombinant teriparatide [hPTH(1–34)] treatment in postmenopausal women with osteoporosis
verfasst von
S. Adami
J. San Martin
M. Muñoz-Torres
M. J. Econs
L. Xie
G. P. Dalsky
M. McClung
D. Felsenberg
J. P. Brown
M. L. Brandi
A. Sipos
Publikationsdatum
01.01.2008
Verlag
Springer-Verlag
Erschienen in
Osteoporosis International / Ausgabe 1/2008
Print ISSN: 0937-941X
Elektronische ISSN: 1433-2965
DOI
https://doi.org/10.1007/s00198-007-0485-y

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