Suppression of Secondary Hyperparathyroidism in Chronic Dialysis Patients by Single Oral Weekly Dose of 1, 25-Dihydroxycholecalciferol
スポンサーリンク
概要
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Eleven hemodialysis patients who developed refractory secondary hyperparathyroidism, despite conventional vitamin D therapy, were treated with large oral doses of 1, 25-dihydroxycholecalciferol [1, 25(OH)2D3]. Therapeutic regimen was a single oral dose of up to 8.0 μg administered once weekly following hemodialysis. A maximum serum level of 1, 25(OH)2D occurred four hours after the 8.0 μg dose. A positive correlation (Y=84.3X-22.1: P<0.01) was found between the maximal serum 1, 25(OH)2D concentration (Cmax) and the dose of 1, 25(OH)2D3 when plotted on a logarithmic scale. Forty-eight hours after the administration of the 8.0 μg dose, the parathyroid hormone (PTH) level and the alkaline phosphatase activity (ALP) were markedly decreased without evidence of hypercalcemia. A significant inverse relationship was found between the Cmax of 1, 25(OH)2D and the percent change in the PTH level measured after 48 hours, either with carboxy-terminal (C-PTH) or the highly sensitive mid-portion assay (HSPTH). From these results, the level of serum 1, 25(OH)2D required to blunt the rise in serum PTH was 168 pg/ml and 203 pg/ml, respectively; these serum levels were achieved by the oral administration of doses of 6.0-8.0 μg or higher. There were no adverse effects of treatment. Following this study, one patient was continuously treated with 8.0 μg of 1, 25(OH)2D3 orally once a week for 18 months. There was a therapeutic effect (as evidenced by PTH suppression, ALP suppression and the disappearance of subjective complaints) without the development of severe hypercalcemia or hyperphosphatemia. This treatment may help to prevent or treat secondary hyperparathyroidism in patients receiving long-term dialysis.(Internal Medicine 32: 695-701, 1993)
著者
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Shigematsu Takashi
The Second Department Of Internal Medicine The Jikei University School Of Medicine
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Sakai Osamu
The Second Department Of Internal Medicine
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KAWAGUCHI Yoshindo
the Second Department of Medicine, the Jikei University School of Medicine
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Kawaguchi Yoshindo
The Second Department of Medicine, JIKEI University School of Medicine
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MOMOSE Mitsuo
the Second Department of Medicine, the Jikei University School of Medicine
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YAMAMOTO Hiroyasu
the Second Department of Medicine, the Jikei University School of Medicine
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UNEMURA Sayumi
the Second Department of Medicine, the Jikei University School of Medicine
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YOKOYAMA Keitaro
the Second Department of Medicine, the Jikei University School of Medicine
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WAKABAYASHI Yoshinori
the Second Department of Medicine, the Jikei University School of Medicine
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IKEDA Masato
the Second Department of Medicine, the Jikei University School of Medicine
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HASEGAWA Toshio
the Second Department of Medicine, the Jikei University School of Medicine
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SHIGEMATSU Takashi
the Second Department of Medicine, the Jikei University School of Medicine
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SAKAI Osamu
the Second Department of Medicine, the Jikei University School of Medicine
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