LANTHANUM CARBONATE DELAYS THE PROGRESSION OF CORONARY ARTERY CALCIFICATION COMPARED WITH CALCIUM-BASED PHOSPHATE BINDER IN PATIENTS ON HEMODIALYSIS
JOURNAL OF CARDIOVASCULAR PHARMACOLOGY AND THERAPEUTICS(2012)
Abstract
Background and Objectives: Coronary artery calcification (CAC) is associated with future cardiovascular events and/or death of patients on hemodialysis (HD). We investigated whether progression of CAC in patients on HD could be delayed by switching from a calcium (Ca)-based phosphate (Pi) binder to lanthanum carbonate. Design, Setting, Participants, and Measurements: The CAC scores were evaluated at study enrollment and after 6 months in 52 patients on HD using calcium carbonate (CC) as a Pi binder. Patients were randomly divided into 2 groups assigned to receive either CC or lanthanum carbonate (LC), and the CAC scores were evaluated after a 6-month treatment period. Progression of CAC was assessed, as were serum levels of Ca, Pi, and intact parathyroid hormone (iPTH). Results: Forty-two patients completed the study (23 receiving CC and 19 receiving LC). In the 6 months prior to randomization, all patients were treated with CC. During this 6-month period, the CAC scores increased significantly in all 42 patients. Once randomized, there was significantly less progression in the group treated with LC than with CC. Changes in CAC scores from 6 to 12 months were significantly smaller in the LC group than the CC group (-288.9 +/- 1176.4 vs 107.1 +/- 559.6, P = .036), and percentage changes were also significantly different (-6.4% vs 41.2%, P = .024). Serum Ca, Pi, and iPTH levels were similar in both groups during the study period. Conclusions: This pilot study suggested that LC delayed progression of CAC in patients on HD compared with CC.
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Key words
lanthanum,coronary artery calcification,hemodialysis,phosphate binder,calcium carbonate
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