Abstract
Background
Considering the growing relevance of fibroblast growth factor-23 (FGF23) and increased cardiovascular mortality in dialysis population, an analysis was performed to assess the influence of dialysis modality (peritoneal dialysis and hemodialysis) on level of FGF23.
Methods
A cross-sectional study was performed in 80 continuous ambulatory peritoneal dialysis (CAPD) and 65 hemodialysis (HD) patients without residual renal function. Levels of calcium, phosphate, parathyroid hormone and FGF23 were measured, and their correlations were analyzed. Data on demographics, dialysis modality and FGF23 level were also analyzed.
Results
A significant correlation was found between FGF23 and serum calcium, serum phosphate and dialysis vintage in dialysis patients. Level of FGF23 was significantly higher in hemodialysis patients than that in peritoneal dialysis population. Multivariable regression revealed that, compared to CAPD, hemodialysis was found to be a predictor for higher FGF23 level, which was independent of serum calcium and phosphate level (P < 0.05).
Conclusions
These findings demonstrate that FGF23 levels are significantly higher in hemodialysis patients than that in peritoneal dialysis patients. We demonstrate an important association between dialysis modality (HD vs CAPD) and higher FGF23, independent of classical determinants (serum calcium and phosphate level).
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Acknowledgements
The authors thank all staffs in Peritoneal Dialysis center and Hemodialysis center in Peking University 3rd Hospital for sample collection and all the people (healthy volunteers and patients) who participated in the study. This work was funded by The National Natural Science Funds in China (Project 81100522). An abstract was presented in poster form at the 15th Congress for the International Society for Peritoneal Dialysis (ISPD); September, 2014, Madrid, Spain.
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The authors have declared that they have no competing interests.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the Human Clinical Study Committee of Peking University Third Hospital.
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Informed consent was obtained from all individual participants included in the study.
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Bi, S., Liang, Y., Cheng, L. et al. Hemodialysis is associated with higher serum FGF23 level when compared with peritoneal dialysis. Int Urol Nephrol 49, 1653–1659 (2017). https://doi.org/10.1007/s11255-017-1605-z
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DOI: https://doi.org/10.1007/s11255-017-1605-z