| Autor: |
Siomou E; Department of Child Health, Medical School, University of Ioannina, Ioannina 45110, Greece. eksiomou@yahoo.gr, Challa A, Printza N, Giapros V, Petropoulou F, Mitsioni A, Papachristou F, Stefanidis CJ |
| Jazyk: |
angličtina |
| Zdroj: |
Pediatric nephrology (Berlin, Germany) [Pediatr Nephrol] 2011 Jul; Vol. 26 (7), pp. 1105-14. Date of Electronic Publication: 2011 Apr 09. |
| DOI: |
10.1007/s00467-011-1870-5 |
| Abstrakt: |
Osteoprotegerin (OPG), receptor activator of the nuclear factor κB ligand (RANKL) and fibroblast growth factor-23 (FGF-23) play a central role in renal osteodystrophy. We evaluated OPG/RANKL and FGF-23 levels in 51 children with chronic kidney disease (CKD) [n = 26 stage 3 or 4 (CKD3-4) and n = 25 stage 5 (CKD5)] and 61 controls. Any possible association with intact parathyroid hormone (iPTH) and bone turnover markers was also investigated. The OPG levels were lower in the CKD3-4 group (p < 0.001) and higher in the CKD5 group (p < 0.01) than in the controls, while RANKL levels did not differ. The FGF-23 levels were higher in both patient groups (p < 0.0001), while the levels of phosphate and iPTH were higher only in the CKD5 group (p < 0.0001). There were independent positive correlations between OPG and RANKL (β = 0.297, p < 0.01) and FGF-23 (β = 0.352, p < 0.05) and a negative correlation with the bone resorption marker TRAP5b (β = -0.519, p < 0.001). OPG was positively correlated with iPTH (R = 0.391, p < 0.01). An independent positive correlation between FGF-23 and phosphate (β = 0.368, p < 0.05) or iPTH (β = 0.812, p < 0.0001) was noted. In conclusion, we found that higher OPG levels in patients with CKD stage 5 correlated with the levels of RANKL, FGF-23, iPTH, and TRAP5b. These findings may reflect a compensatory mechanism to the negative balance of bone turnover. High FGF-23 levels in early CKD stages may indicate the need for intervention to manage serum phosphate (Pi) levels. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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