Wnt Inhibitors and Bone Turnover Markers in Patients With Polymyalgia Rheumatica and Acute Effects of Glucocorticoid Treatment

Frontiers in Medicine

article

Angelo Fassio¹  Davide Gatti¹  Giovanni Adami¹  Luca Idolazzi¹  Alessandro Giollo¹  Ombretta Viapiana¹  Elisabetta Vantaggiato¹  Camilla Benini¹  Maurizio Rossini¹  Christian Dejaco² 

[1] Rheumatology Unit, University of Verona;South Tyrolean Health Trust, Hospital of Bruneck;Department of Rheumatology, Medical University Graz

关键词: polymyalgia rheumatica;    glucocorticoid;    Wnt pathway;    Dkk-1;    sclerostin;    osteoporosis;   

DOI  :  10.3389/fmed.2020.00551

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

Background: In polymyalgia rheumatica (PMR), data on bone turnover markers (BTM), on Wnt inhibitors (Dkk-1, sclerostin) and their changes induced by glucocorticoids (GC) are lacking. The aims of our study were to compare the baseline levels of Wnt inhibitors and BTM in PMR patients with healthy controls (HC) and to study their changes over the first 4 weeks of GC treatment. Materials and Methods: We enrolled 17 treatment-naïve patients affected by PMR and 17 age and sex-matched healthy controls (HC) from retired hospital personnel. PMR patients were administered methylprednisolone 16 mg daily for 4 weeks. Blood samples were taken at baseline and at week 4 for the PMR group, a single sample was taken for HC. N-propeptide of type I collagen (PINP), C-terminal telopeptide of type I collagen (CTX-I), sclerostin, Dkk-1, and C-reactive protein (CRP) were dosed. Results: At baseline, Dkk-1 was significantly higher in the PMR group as compared to HC ( p = 0.002) while PINP, CTX-I and sclerostin levels were comparable between PMR patients and HC, After 4 weeks of GC treatment we found in the PMR group a decrease of PINP (mean ± SD percentage decrement as compared to baseline −40 ± 18.6%, p < 0.001), CTX-I (−23.5 ± 41.3%, p = 0.032), Dkk-1 (−22.4 ± 39.6, p = 0.033), and sclerostin (−32.49 ± 20.47, p < 0.001) as compared to baseline levels. Conclusions: In treatment-naïve PMR, systemic inflammation is associated with a dysregulation of the Wnt system (increased Dkk-1). Within the 1st month, treatment with GC showed noteworthy effects on bone resorption, formation, and on Wnt pathway modulators.

【 授权许可】

CC BY