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International Urology and Nephrology

, Volume 49, Issue 8, pp 1433–1437 | Cite as

Radial artery sclerostin expression in chronic kidney disease stage 5 predialysis patients: a cross-sectional observational study

  • Hua Zhou
  • Min Yang
  • Min Li
  • Li Cui
Nephrology – Original Paper

Abstract

Purpose

Bone metabolism disorder is often associated with cardiovascular calcification in patients with chronic kidney disease (CKD). Sclerostin, a novel candidate protein, has been identified to be involved in the bone–vascular axis. The aims of the current investigation were to assess vessel sclerostin expression and its relationship with circulating sclerostin levels.

Methods

A cross-sectional observational study was conducted from January 2012 to December 2014. Thirty-two predialysis patients with CKD stage 5 who received arteriovenous fistula (AVF) operations were enrolled in this study. Radial arteries were collected and paraffin-embedded during the AVF operation, followed by immunohistochemical staining for sclerostin expression. In addition, serum sclerostin levels were measured by the enzyme-linked immunosorbent assay.

Results

The prevalence of positive sclerostin staining in the radial arteries was 56.25%. Sclerostin expression was localized in the artery media layer. Serum sclerostin levels in patients with positive sclerostin expression were much higher than in those with negative expression (p = 0.018). Multivariate logistic regression analyses including potential confounders as age, gender, systolic blood pressure (BP), diastolic BP, serum sclerostin, corrected calcium (Ca), phosphate (P), Ca × P product, alkaline phosphatase, intact parathyroid hormone, and estimated glomerular filtration rate showed that only serum sclerostin levels were closely related to vessel sclerostin expression (p = 0.025). The area under the curve of serum sclerostin levels for predicting positive vessel sclerostin expression was 0.742 with 61.1% sensitivity and 85.7% specificity (p  = 0.008). The cutoff point for vessel sclerostin expression of serum sclerostin was 1591.53 pg/mL.

Conclusions

Positive expression of sclerostin in the radial artery media layer was related to high serum sclerostin levels. Sclerostin may act as both a local and systemic regulator involved in vascular calcification.

Keywords

Chronic kidney disease Radial artery Sclerostin Vascular calcification 

Notes

Acknowledgements

This study was funded by Youth Talent Programme of Changzhou Government Healthy Service (No. QN201402). The authors thank Zhong Xue for making substantial contributions to data collection.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  1. 1.Department of NephrologyThe Third Affiliated Hospital of Soochow UniversityChangzhouChina
  2. 2.Department of UrologyThe Third Affiliated Hospital of Soochow UniversityChangzhouChina

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