Osteoporosis International

, Volume 21, Issue 11, pp 1853–1861

Fibroblast growth factor-23 is associated with C-reactive protein, serum phosphate and bone mineral density in chronic kidney disease

  • P. Manghat
  • W. D. Fraser
  • A. S. Wierzbicki
  • I. Fogelman
  • D. J. Goldsmith
  • G. Hampson
Original Article

DOI: 10.1007/s00198-009-1142-4

Cite this article as:
Manghat, P., Fraser, W.D., Wierzbicki, A.S. et al. Osteoporos Int (2010) 21: 1853. doi:10.1007/s00198-009-1142-4

Abstract

Summary

We investigated the association between fibroblast growth factor-23 (FGF-23) and (1) the biochemical parameters implicated in chronic kidney disorder (CKD)-bone and mineral disorder (CKD-MBD) and (2) bone mineral density (BMD) in patients with CKD 1-4. C-reactive protein (CRP) and serum phosphate correlated with FGF-23. A significant association was seen between FGF-23 and BMD at the hip.

Introduction

Circulating FGF-23 is elevated in CKD, although the primary stimulus remains unclear. Moreover, it is still unknown whether increase in FGF-23 has a biological effect on bone metabolism. The aim of the study was to investigate the association of FGF-23 with (1) the biochemical parameters linked with CKD-bone and mineral disorder (CKD-MBD) and (2) bone mineral density in CKD.

Methods

We studied 145 patients (74 M, 71 F) aged (mean [SD]) 53 [14] years with CKD 1–4. Serum calcium, phosphate, parathyroid hormone, FGF-23, 25 (OH) vitamin D, 1, 25 (OH)2 vitamin D, bone turnover markers, CRP were determined. BMD was measured at the lumbar spine, femoral neck (FN), forearm, and total hip (TH). Multivariate analysis was undertaken to explore the association between (1) the biochemical variables and FGF-23 and (2) FGF-23 and BMD.

Results

Elevations in FGF-23 occurred in CKD stage 3 compared to CKD stage 1/2, although no significant differences in serum phosphate were observed. Serum phosphate (p < 0.001), CRP (p < 0.001) and diabetes mellitus (p < 0.05) were associated with FGF-23. BMD Z-score was significantly lower at the TH and FN in CKD 4 (p < 0.05). A significant association was seen between BMI, FGF-23, bone specific alkaline phosphatase and BMD at the TH (p < 0.05).

Conclusions

The data suggest that FGF-23 may be associated with parameters implicated in the complications of CKD. Longitudinal studies are required for further clinical evaluation.

Keywords

Bone mineral densityChronic kidney diseaseFibroblast growth factor-23

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2009

Authors and Affiliations

  • P. Manghat
    • 1
  • W. D. Fraser
    • 2
  • A. S. Wierzbicki
    • 1
  • I. Fogelman
    • 3
  • D. J. Goldsmith
    • 4
  • G. Hampson
    • 1
  1. 1.Department of Chemical Pathology5th Floor, North Wing, St Thomas’ HospitalLondonUK
  2. 2.Department of Clinical ChemistryRoyal Liverpool HospitalLiverpoolUK
  3. 3.Department of Nuclear MedicineGuy’s HospitalLondonUK
  4. 4.Renal UnitGuy’s HospitalLondonUK