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Erschienen in: Osteoporosis International 11/2019

05.08.2019 | Original Article

Serum fibroblast growth factor 23 and mineral metabolism in patients with euthyroid Graves’ diseases: a case-control study

verfasst von: C.-H. Lin, C.-K. Chang, C.-W. Shih, H.-Y. Li, K.-Y. Chen, W.-S. Yang, K.-S. Tsai, C.-Y. Wang, S.-R. Shih

Erschienen in: Osteoporosis International | Ausgabe 11/2019

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Abstract

Summary

This study investigated the alterations of mineral metabolism in patients with Graves’ disease (GD) who achieved euthyroidism. They had higher fibroblast growth factor 23 (FGF23) and phosphorus as compared with healthy subjects. Serum FGF23 was negatively correlated with serum phosphorus. These indicated abnormal mineral metabolism even after 1.6 years of euthyroid status.

Introduction

FGF23 is involved in the mineral homeostasis, especially the regulation of serum phosphorus. Graves’ disease (GD) is associated with accelerated bone turnover, hyperphosphatemia, and elevated serum FGF23. Evidence suggested that serum FGF23 decreased after a 3-month treatment of GD. However, it remains unclear whether serum FGF23, serum phosphorus, and other markers of mineral metabolism will be normalized after euthyroid status achieved.

Methods

A total of 62 patients with euthyroid GD and 62 healthy control subjects were enrolled, and the median duration of euthyroid status was 1.6 years. Endocrine profiles including thyroid function test, autoantibodies, serum FGF23, and bone turnover markers were obtained and compared between the two groups.

Results

Euthyroid GD patients had significantly higher serum FGF23 and phosphorus, and lower 25-hydroxyvitamin D (25(OH)D) and intact parathyroid hormone (iPTH) levels as compared with the control group. Serum FGF23 was significantly and negatively correlated with phosphorus level after adjusted for age, gender, calcium, iPTH, and 25(OH)D in the euthyroid GD group.

Conclusion

Serum phosphorus and FGF23 levels remain higher in GD patients even after euthyroid status has been achieved for a median of 1.6 years. Serum FGF23 was negatively correlated with serum phosphorus in euthyroid GD patients. Underlying mechanisms warrant further investigations.

Trial registration

Registration number: NCT01660308 and NCT02620085
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Metadaten
Titel
Serum fibroblast growth factor 23 and mineral metabolism in patients with euthyroid Graves’ diseases: a case-control study
verfasst von
C.-H. Lin
C.-K. Chang
C.-W. Shih
H.-Y. Li
K.-Y. Chen
W.-S. Yang
K.-S. Tsai
C.-Y. Wang
S.-R. Shih
Publikationsdatum
05.08.2019
Verlag
Springer London
Erschienen in
Osteoporosis International / Ausgabe 11/2019
Print ISSN: 0937-941X
Elektronische ISSN: 1433-2965
DOI
https://doi.org/10.1007/s00198-019-05116-1

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