Effects of Dietary Phosphorus Restriction on Secondary Hyperparathyroidism in Hemodialysis Patients during Intermittent Oral High-dose 1, 25(OH)2D3 Treatment
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概要
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Phosphorus (P) retention plays an important role in the pathogenesis of secondary hyperparathyroidism (2nd HPT) in chronic renal failure. In recent years, periodic intravenous or intermittent oral administration of high doses of 1, 25(OH)2D3 has been reported to improve severe 2nd HPT in hemodialysis patients. The present study was performed to determine the effects of dietary P restriction on 2nd HPT in hemodialysis patients treated with intermittent oral high-dose 1, 25(OH)2D3. A high dose of 1, 25(OH)2D3 was administered orally twice a week at the end of hemodialysis in 20 hemodialysis patients with 2nd HPT. Dietary P content was estimated from records of the patients' food intake, made twice during the treatment period. Based on this information, dietitians developed appropriate meal plans and instructed the patients. After 8 weeks of the treatment, serum c-parathyroid hormone (c-PTH) and alkaline phosphatase (ALP) levels decreased significantly, from 18.8±1.9 ng/ml and 347.1±30.7 U/liter to 9.4±1.2 ng/ml and 268.3±19.6 U/liter, respectively. Serum P levels increased gradually during the first 4 weeks of the treatment. Dietary P intake was reduced significantly, from 908±49 mg/day to 734±39 mg/day, after the nutritional instructions. As a result of the dietary P restrictions, serum P levels were significantly decreased in the 8th week as compared with those in the 4th week. Serum Ca levels remained unchanged throughout the observation period. There was a significant relationship between the mean values for serum P levels during the study and the percent suppression of serum c-PTH. These results suggest that dietary P restriction facilitates serum P control without increasing doses of phosphate binders, and that this ameliorates 2nd HPT during intermittent oral high-dose 1, 25(OH)2D3 treatment in hemodidalysis patients with this condition.
- 財団法人 学会誌刊行センターの論文
著者
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Tabata Tsutomu
Division Of Cardiocascular Medicine Institute Of Geriatrics And Medical Science
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MIKI Takami
Second Department of Internal Medicine, Osaka City University Medical School
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Nishizawa Yoshiki
Second Department Of Internal Medicine Osaka City University Medical School
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Inoue Takashi
Division Of Diabetes Digestive And Kidney Diseases Department Of Clinical Molecular Medicine Kobe University Graduate School Of Medicine
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MORII HIROTOSHI
Second Department of Internal Medicine Osaka City University
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MORII Hirotoshi
Second Department of Internal Medicine, Osaka City Medical School
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NISHIZAWA Yoshiki
Second Department of Internal Medicine, Osaka City Medical School
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SHOJI Shigeichi
Division of Medicine, Inoue Hospital
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MORITA Atsuko
Division of Medicine, Inoue Hospital
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EMOTO Masanori
Division of Medicine, Inoue Hospital
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MIKI Takami
Second Department of Internal Medicine, Osaka City Medical School
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