Abstract
Objectives
The objective of this study was to investigate α-Klotho and fibroblast growth factor receptor 1 (FGFR1) expression in hyperplastic parathyroid glands, as well as their role in the development of renal hyperparathyroidism.
Methods
Hyperplastic parathyroid glands (n = 90) were obtained from 24 patients who received parathyroidectomy due to secondary renal hyperparathyroidism. Normal parathyroid tissue was obtained from glands (n = 6) that were inadvertently removed, in conjunction with thyroidectomy, from patients with thyroid carcinoma. The expression of α-Klotho and FGFR1 in the parathyroid tissue was detected using immunohistochemical staining.
Results
The expression of α-Klotho and FGFR1 was significantly reduced in the hyperplastic parathyroid tissue compared to that in the normal parathyroid tissue. The expression of α-Klotho decreased further with increasing parathyroid pathology. A significant positive correlation was observed between α-Klotho and FGFR1 (r = 0.38, P < 0.01). FGFR1 (r = −0.21, P < 0.05) and α-Klotho (r = −0.42, P < 0.01) were negatively correlated with the volume of the hyperplastic parathyroid tissue.
Conclusion
The expression of α-Klotho and FGFR1 decreases in the parathyroid glands of dialysis patients with secondary hyperparathyroidism, and this decrease may play an important role in the pathogenesis of secondary renal hyperparathyroidism.
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Acknowledgments
The authors thank Mr. Dake Huang and Xian Wang for their excellent technical assistance.
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All authors have no conflict of interest regarding this paper.
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Yan, J., Jingbo, C., Wang, D. et al. A correlation between decreased parathyroid α-Klotho and fibroblast growth factor receptor 1 expression with pathological category and parathyroid gland volume in dialysis patients. Int Urol Nephrol 47, 701–706 (2015). https://doi.org/10.1007/s11255-015-0917-0
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DOI: https://doi.org/10.1007/s11255-015-0917-0