No trend toward a spontaneous improvement of hyperparathyroidism and high bone turnover in normocalcemic long-term renal transplant recipients

被引:78
作者
Dumoulin, G [1 ]
Hory, B [1 ]
Nguyen, NU [1 ]
Bresson, C [1 ]
Fournier, V [1 ]
Bouhaddi, M [1 ]
Chalopin, JM [1 ]
SaintHillier, Y [1 ]
Regnard, J [1 ]
机构
[1] CHU BESANCON,LAB PHYSIOL & NEPHROL,F-25030 BESANCON,FRANCE
关键词
kidney transplantation; hyperparathyroidism; osteocalcin; bone turnover; renal phosphate wasting;
D O I
10.1016/S0272-6386(97)90129-3
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
Although hyperparathyroidism is a common feature in renal transplant recipients, the long-term course of parathyroid hormone (PTH) secretion in these patients is not well established, and the actual contribution of PTH to posttransplant bone disease remains incompletely understood. Therefore, we studied calcium-regulating hormones and serum osteocalcin, as a marker of bone remodeling, in 82 normocalcemic renal transplant recipients with good renal function who had received a graft 6 to 73 months previously and in 82 healthy subjects matched for age and sex. In all subjects, fasting serum and 24-hour urinary samples were collected. The transplant recipients had excessive PTH secretion (serum PTH, 6.9 +/- 0.5 pmol/L in recipients v 3.0 +/- 0.1 pmol/L in healthy subjects; P < 0.001) and high bone turnover (osteocalcin, 16.6 +/- 0.8 mu g/L v 8.0 +/- 0.3 mu g/L; P < 0.001). (Values are mean +/- SEM.) In addition, transplant recipients had a slightly higher ionized calcium than the healthy subjects, providing definite evidence of an inappropriate PTH secretion in renal transplant recipients. Furthermore, in subgroups of 25 recipients and 25 healthy controls matched for creatinine clearance, the results superimposed those obtained in the whole groups, suggesting that excessive PTH secretion and high bone turnover in renal transplant recipients did not merely reflect the moderately reduced renal function of some recipients. In the whole group of transplant recipients, PTH correlated positively with osteocalcin (r = 0.40; P < 0.001), suggesting that PTH contributes at least partly to posttransplant bone disease. Conversely, there was no correlation between serum PTH or osteocalcin and the delay from grafting. Therefore, our results provide no evidence for a spontaneous improvement of either persistent hyperparathyroidism or high bone turnover in normocalcemic long-term renal transplant recipients. (C) 1997 by the National Kidney Foundation, Inc.
引用
收藏
页码:746 / 753
页数:8
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