期刊
CLINICA CHIMICA ACTA
卷 417, 期 -, 页码 35-38出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cca.2012.12.009
关键词
Bone-specific alkaline phosphatase; Parathormone; Bone turnover
Background: Chronic Kidney Disease (CKD) is associated with mineral and bone disorders (MBD). International guidelines suggest that levels of serum parathormone (PTH) or bone-specific alkaline phosphatase (b-ALP) can be used to evaluate MBD in dialysis patients. The evidence remains moderate and based on transversal studies. Methods: We retrospectively investigated the variations of PTH (Delta PTH) and b-ALP (Delta b-ALP) serum concentrations over a short (6-weeks) and a long (one-year) period in a monocentric hemodialysis population. The proportion of patients reaching the critical difference (CD) (50% for PTH and 25% for b-ALP) was calculated. Results: Seventy-seven patients were included. A significant correlation between PTH and b-ALP levels was found at baseline (r = 0.51). By contrast, no correlation was observed between Delta PTH and Delta b-ALP over a 6-week interval (r = 0.07). The CD for PTH and b-ALP was reached by 19 and 11 patients, respectively, with 2 patients showing consistent variations of both biomarkers. One year later, measurements were repeated in 48 survivors. No correlation was found between Delta PTH and Delta b-ALP (r = 0.27). The CD for PTH or b-ALP was reached by 24 patients and 28 patients, respectively, with 6 patients (12.5%) showing opposite results for both biomarkers. Conclusion: This study shows the lack of correlation between Delta PTH and Delta b-ALP over time in patients under chronic hemodialysis. (c) 2012 Elsevier B.V. All rights reserved.
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