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  • Title: Sclerostin as a new key factor in vascular calcification in chronic kidney disease stages 3 and 4.
    Author: Lv W, Guan L, Zhang Y, Yu S, Cao B, Ji Y.
    Journal: Int Urol Nephrol; 2016 Dec; 48(12):2043-2050. PubMed ID: 27465794.
    Abstract:
    BACKGROUND: Sclerostin is an osteocyte-derived inhibitor of the Wnt pathway and has been shown to play a key role in chronic kidney disease-mineral and bone disorder (CKD-MBD). The present study aimed to validate its potential as a predictor of vascular calcification in patients with CKD stages 3-4. METHODS: A total of 97 patients with CKD stages 3-4 were enrolled in this cross-sectional study. Routine clinical biochemistry tests and assays for sclerostin and mineral metabolism markers were performed. Additionally, vascular calcification was assessed by multislice spiral computed tomography. Logistic regression analyses were used to study the relationships between sclerostin and vascular calcification. RESULTS: Serum sclerostin levels (30.8 ± 6.4 vs. 41.7 ± 12.6 pmol/L, P < 0.05) were significantly elevated in patients with CKD stage 3a compared to in controls and increased with the decline in glomerular filtration rates. Furthermore, patients with vascular calcification had higher serum sclerostin levels. Patients with sclerostin levels above the median value had increased the prevalence of vascular calcification. Multivariate analysis revealed that sclerostin levels were positively associated with vascular calcification. CONCLUSION: Our data indicate that sclerostin levels are elevated in patients with CKD and are associated with vascular calcification. Therefore, sclerostin may be used as a predictor of vascular calcification in the clinical setting.
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