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Current Osteoporosis Reports

Erschienen in:

01.03.2014 | Epidemiology and Pathophysiology (PR Ebeling and EF Eriksen, Section Editors)

The Role of Wnt Signaling and Sclerostin in the Pathogenesis of Glucocorticoid-Induced Osteoporosis

verfasst von: Núria Guañabens, Laia Gifre, Pilar Peris

Erschienen in: Current Osteoporosis Reports | Ausgabe 1/2014

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Abstract

Bone formation is suppressed in glucocorticoid-induced osteoporosis. One of the mechanisms by which glucocorticoids depress bone formation is through their effects on the Wnt/β-catenin signaling pathway, a critical regulator of osteoblastogenesis. Thus, Wnt signaling induces the differentiation of osteoblast precursors toward mature osteoblasts and prevents osteoblast and osteocyte apoptosis. Glucocorticoids increase the expression of Wnt signaling antagonists (sclerostin and Dkk-1) in experimental studies in rodents and cell cultures. However, the scarce data of their effects in humans are somewhat contradictory, probably due to the dose and duration of treatment as well as the characteristics of the patients. A progressive decrease in Dkk-1 serum levels and an increase in circulating sclerostin levels at long-term follow-up have recently been reported in patients treated with high doses of glucocorticoids. This review describes the most recent data on the effects of glucocorticoids on the Wnt signaling pathway, especially on their antagonists, sclerostin and Dkk-1.

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Titel: The Role of Wnt Signaling and Sclerostin in the Pathogenesis of Glucocorticoid-Induced Osteoporosis
verfasst von: Núria Guañabens
Laia Gifre
Pilar Peris
Publikationsdatum: 01.03.2014
Verlag: Springer US
Erschienen in: Current Osteoporosis Reports / Ausgabe 1/2014
Print ISSN: 1544-1873
Elektronische ISSN: 1544-2241
DOI: https://doi.org/10.1007/s11914-014-0197-0

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