Marked and sustained increase in bone mineral density after parathyroidectomy in patients with primary hyperparathyroidism; a six-year longitudinal study with or without parathyroidectomy in a Japanese population

被引:37
|
作者
Nomura, R
Sugimoto, T
Tsukamoto, T
Yamauchi, M
Sowa, H
Chen, QX
Yamaguchi, T
Kobayashi, A
Chihara, K
机构
[1] Kobe Univ, Grad Sch Med, Dept Clin Mol Med, Div Endocrinol Metab Neurol & Hematol Oncol, Kobe, Hyogo, Japan
[2] Kobayashi Clin, Kobe, Hyogo, Japan
关键词
D O I
10.1111/j.1365-2265.2004.01984.x
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
OBJECTIVE Although many reports have demonstrated the sustained increase in bone mineral density (BMD) at trabecular sites in primary hyperparathyroidism (pHPT) after parathyroidectomy (PTX), there have been no data available on BMD changes over the long-term in pHPT patients with and without PTX in Japanese population. The present study was designed to investigate long-term BMD changes at both trabecular and cortical sites in Japanese pHPT patients with or without PTX. METHODS The subjects were 97 patients who had been followed up in Kobe University Hospital for at least 1 year up to 6 years with or without PTX. PTX was recommended to all patients whose pathological parathyroid gland(s) could be determined by image diagnosis. BMD was measured at the lumbar spine (L2-L4) and at distal one-third of the radius (R1/3) by dual energy X-ray absorptiometry (QDR2000). Serum levels of calcium, alkaline phosphatase and parathyroid hormone (PTH) were determined at the time of the BMD measurement. RESULTS Significant increases in any of the indices of BMD from the baseline values were observed within three months after PTX, followed by sustained increases over 6 years at L2-L4 even in postmenopausal women. Radial BMD also showed a marked increase six years after PTX. L2-L4 eventually reached the normal BMD but R1/3 did not. The percentage changes in L2-L4 were positively and significantly correlated with the preoperative PTH levels over the study period. However, the percentage changes in R1/3 showed a significant correlation with the preoperative PTH levels only 5 and 6 years after PTX. In the patients without PTX, no obvious changes in biochemical indices and BMD were observed over the six years. CONCLUSION We demonstrated that PTX led to marked and sustained increases in BMD not only at L2-L4 but also at R1/3 in Japanese pHPT patients, including postmenopausal women. The preoperative PTH level could be a clinically useful index for predicting long-term BMD changes after PTX.
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页码:335 / 342
页数:8
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