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Treatment of secondary hyperparathyroidism with paricalcitol with or without cinacalcet in hemodialysis patients.
Polish Archives of Internal Medicine 2017 December 23
INTRODUCTION Secondary hyperparathyroidism (SHPT) is a common hormonal disorder associated with chronic kidney disease (CKD). The treatment of SHPT should lead to a reduction in parathormone concentrations by calcimimetics or active vitamin D administration and stabilization of calciumand phosphate metabolism. In the event of failure of conservative treatment, complete or partial parathyroid resection should be considered. OBJECTIVES The aim of the study was to assess the beneficial effects of a combination treatment with paricalcitol and cinacalcet in comparison with paricalcitol alone. PATIENTS AND METHODS A total of 64 hemodialyzed patients (mean [SD] age, 58 [16] years) with inadequate control of serum parathyroid hormone levels were treated with intravenous paricalcitol, while 16 patients simultaneously received oral cinacalcet. Laboratory tests (intact parathormone [iPTH], calcium, phosphorus) were performed on a monthly basis. In the study, iPTH, calium, phosphorus, and alkaline phosphatase levels were assessed at baseline and after 24 weeks of treatment with paricalcitol alone or in combination with cinacalcet. RESULTS In both groups, a significant decrease in the iPTH level was observed. Although paricalcitol affects calcium levels, no hypercalcemia was observed. The combination treatment did not result in a significant lowering of iPTH levels in comparison with paricalcitol alone. CONCLUSIONS Treatment of SHPT with intravenous paricalcitol in patients on hemodialysis is effective and has a good safety profile. The combination of paricalcitol and cinacalcet does not improve the outcomes. Moreover, the combined treatment does not affect calcium and phosphorus concentrations. The cost‑effectiveness of therapy should also be considered.
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