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  • Title: Effects of sevelamer on the progression of vascular calcification in patients on chronic haemodialysis.
    Author: Takei T, Otsubo S, Uchida K, Matsugami K, Mimuro T, Kabaya T, Akiba T, Nitta K.
    Journal: Nephron Clin Pract; 2008; 108(4):c278-83. PubMed ID: 18434749.
    Abstract:
    BACKGROUND/AIM: Vascular calcification is thought to be associated with a high cardiovascular mortality rate in patients with end-stage renal disease. Control of hyperphosphataemia is important for the treatment of the vascular calcification. The aim of the present study was to evaluate the effects of sevelamer hydrochloride on the progression of aortic calcification in haemodialysis (HD) patients. METHODS: 42 HD patients were studied in this study and divided into two groups (sevelamer vs. calcium). Sevelamer was added and titrated up to achieve serum P control for 6 months. The estimations of aortic calcification index (ACI) by abdominal computed tomography scans were performed twice in each patient. We compared the changes in serum calcium, phosphorus, intact parathyroid hormone, and lipids in two groups. RESULTS: Serum phosphorus levels decreased significantly from 6.7 +/- 0.7 to 6.2 +/- 0.5 mg/dl with no changes in serum intact parathyroid hormone levels in the sevelamer group (p < 0.01), and increased from 6.5 +/- 1.0 to 6.7 +/- 1.1 mg/dl in the calcium group (p < 0.05). Serum calcium levels did not change in the sevelamer group and calcium group. The serum levels of total cholesterol decreased significantly from 158.5 +/- 20.7 to 146.2 +/- 24.1 mg/dl (p = 0.024) and the low-density lipoprotein cholesterol level from 65.3 +/- 14.4 to 54.7 +/- 11.6 mg/dl (p = 0.014) in the sevelamer group. Serum C-reactive protein decreased significantly from 0.14 +/- 0.13 to 0.08 +/- 0.11 mg/dl in the sevelamer group (p = 0.038) and significantly increased (0.18 +/- 0.09 vs. 0.22 +/- 0.12 mg/dl) in the calcium group (p = 0.042). The mean changes in ACI (DeltaACI) were 3.6 +/- 1.5% in the sevelamer group and 8.2 +/- 3.1% in the calcium group. CONCLUSIONS: Sevelamer allows a better serum phosphorus control compared with calcium-based phosphate binder and suppresses the progression of aortic calcification in HD patients.
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