Abstract
New bone metabolic markers have become available clinically for evaluating chronic kidney disease mineral and bone disorders (CKD-MBD). The aim of this study was to correlate these new bone metabolic markers with conventional markers in regular hemodialysis (HD) patients. One hundred forty three HD patients underwent cross-sectional assessment. Two bone formation markers, bone-specific alkaline phosphatase (BAP) and osteocalcin (OC), and one bone resorption marker, amino-terminal telopeptides of type 1 collagen (NTx), were selected for study. Both circulating OC and NTx levels showed positive correlations with serum intact parathyroid hormone (iPTH) levels. The levels of NTx and OC showed a strongly positive correlation, although they are known to be markers of different aspects of bone metabolism: bone formation and resorption. Patients with high iPTH (≥300pg/mL) had significantly higher levels of all the three bone markers compared with patients with low or normal iPTH . Serum OC and NTx levels may be useful markers of serum iPTH levels for evaluating bone turnover in HD patients and may eventually prove useful in the management of patients with CKD-MBD.
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