The Bone Histology Spectrum in Experimental Renal Failure: Adverse Effects of Phosphate and Parathyroid Hormone Disturbances

被引：9

作者：

Batista, Daniella G. ^{[2
]}

Neves, Katia R. ^{[2
]}

Graciolli, Fabiana G. ^{[2
]}

dos Reis, Luciene M. ^{[2
]}

Graciolli, Rafael G. ^{[2
]}

Dominguez, Wagner V. ^{[2
]}

Neves, Carolina L. ^{[2
]}

Magalhaes, Andrea O. ^{[2
]}

Custodio, Melani R. ^{[2
]}

Moyses, Rosa M. ^{[2
]}

Jorgetti, Vanda ^{[1
,2
]}

机构：

[1] Lab Fisiopatol Renal LIM16, BR-01246903 Sao Paulo, Brazil

[2] Univ Sao Paulo, Sch Med, Div Nephrol, Sao Paulo, Brazil

来源：

CALCIFIED TISSUE INTERNATIONAL | 2010年 / 87卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

Bone histomorphometry; Chronic kidney disease; Parathyroid hormone; Phosphate; Renal osteodystrophy; MINERAL DENSITY; RAT MODEL; PHOSPHORUS; METABOLISM; APOPTOSIS; CELLS; INTERMITTENT; FOOD;

D O I：

10.1007/s00223-010-9367-y

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Bone disease is a common disorder of bone remodeling and mineral metabolism, which affects patients with chronic kidney disease. Minor changes in the serum level of a given mineral can trigger compensatory mechanisms, making it difficult to evaluate the role of mineral disturbances in isolation. The objective of this study was to determine the isolated effects that phosphate and parathyroid hormone (PTH) have on bone tissue in rats. Male Wistar rats were subjected to parathyroidectomy and 5/6 nephrectomy or were sham-operated. Rats were fed diets in which the phosphate content was low, normal, or high. Some rats received infusion of PTH at a physiological rate, some received infusion of PTH at a supraphysiological rate, and some received infusion of vehicle only. All nephrectomized rats developed moderate renal failure. High phosphate intake decreased bone volume, and this effect was more pronounced in animals with dietary phosphate overload that received PTH infusion at a physiological rate. Phosphate overload induced hyperphosphatemia, hypocalcemia, and changes in bone microarchitecture. PTH at a supraphysiological rate minimized the phosphate-induced osteopenia. These data indicate that the management of uremia requires proper control of dietary phosphate, together with PTH adjustment, in order to ensure adequate bone remodeling.

引用

页码：60 / 67

页数：8

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