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  • Title: Effect of androgen deprivation therapy on serum levels of sclerostin, Dickkopf-1, and osteoprotegerin: a cross-sectional and longitudinal analysis.
    Author: Wang A, Karunasinghe N, Plank LD, Zhu S, Osborne S, Brown C, Bishop K, Schwass T, Tijono S, Holmes M, Masters J, Huang R, Keven C, Ferguson LR, Lawrenson R.
    Journal: Sci Rep; 2021 Jul 21; 11(1):14905. PubMed ID: 34290287.
    Abstract:
    Androgen deprivation therapy (ADT) for men with prostate cancer (PCa) results in accelerated bone loss and increased risk of bone fracture. The aim of the present study was to evaluate serum bone markers-sclerostin, Dickkopf-1 (DKK-1) and osteoprotegerin (OPG), in a cohort of 88 PCa patients without known bone metastases, managed with and without ADT, and to analyse their relationship with bone mineral density (BMD) and sex steroids. The cross-sectional analysis between acute-, chronic- and former-ADT groups and PCa controls showed that sclerostin and OPG levels significantly differed between them (p = 0.029 and p = 0.032). Groups contributing to these significant changes were recorded. There were no significant differences in serum DKK-1 levels across the four groups (p = 0.683). In the longitudinal analysis, significant % decreases within groups were seen for DKK-1 [chronic-ADT (- 10.06%, p = 0.0057), former-ADT (- 12.77%, p = 0.0239), and in PCa controls group (- 16.73, p = 0.0022); and OPG levels in chronic ADT (- 8.28%, p = 0.003) and PCa controls group (- 12.82%, p = 0.017)]. However, % changes in sclerostin, DKK-1, and OPG did not differ significantly over 6-months across the evaluated groups. Sclerostin levels showed significant positive correlations with BMD at baseline in the ADT group, while in PCa controls this correlation existed at both baseline and 6-month time points. Sclerostin correlated negatively with testosterone in former ADT users and in PCa controls. Possible prognostic features denoted by parallel increases in sclerostin and BMD are discussed.
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