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Nephrology Dialysis Transplantation, Vol 14, Issue 3 610-614, Copyright © 1999 by Oxford University Press

ORIGINAL ARTICLES

Effects of niceritrol on faecal and urinary phosphate excretion in normal rats

N Kuboyama, Y Watanabe, M Yamaguchi, K Sato, T Suzuki and T Akiba
Pharmaceutical Laboratory, Sanwa Kagaku Kenkyusho Co., Ltd, 363 Shiosaki, Hokusei-chou, Inabe-gun, Mie 511-0406, Japan; Department of Internal Medicine, Tokyo Medical and Dental University, Tokyo, Japan; Corresponding author

Background. Phosphate binders such as aluminium hydroxide and calcium carbonate have several side-effects so that they are not ideal for clinical use. Recently we reported that administration of niceritrol at 750 mg/day to patients with HDL hypocholesterolaemia undergoing dialysis decreased the serum phosphate concentration. To clarify the mechanism of reduction of the serum phosphate concentration by niceritrol in patients undergoing dialysis, the effects of niceritrol on faecal and urinary phosphate excretion were examined. Methods. Niceritrol suspension in 5% gum arabic was administered for 4 days in normal rats. Faeces and urine were collected in metabolic cage and analysed for phosphate content. Results and conclusions. Faecal phosphate excretion significantly increased in the groups with administration of 100 and 500 mg/kg niceritrol, but not in the group with 20 mg/kg. On the other hand, urinary phosphate excretion was not significantly changed in the groups on 20-500 mg/kg. Retention of phosphate was significantly suppressed in the groups on 100 and 500 mg/kg. A increased faecal phosphate excretion by niceritrol is presumably the mechanism by which serum phosphate concentration is reduced in dialysis patients. Keywords: faecal excretion; niceritrol; phosphate
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 Nephrol Dial TransplantHome page
N. Eto, Y. Miyata, H. Ohno, and T. Yamashita
Nicotinamide prevents the development of hyperphosphataemia by suppressing intestinal sodium-dependent phosphate transporter in rats with adenine-induced renal failure
Nephrol. Dial. Transplant., July 1, 2005; 20(7): 1378 - 1384.
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