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Ann Pediatr Endocrinol Metab > Volume 16(3); 2011 > Article
DOI: https://doi.org/10.6065/jkspe.2011.16.3.178   
Pamidronate Therapy in Children and Adolescents with Secondary Osteoporosis.
Jieun Lee, Juyoung Yoon, Young Ah Lee, Jung Sub Lim, Choong Ho Shin, Sei Won Yang
1Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea. chshinpd@snu.ac.kr
2Department of Pediatrics, Korea Cancer Center Hospital, Seoul, Korea.
Abstract
PURPOSE
The aim of this study was to evaluate the efficacy of pamidronate therapy in children and adolescents with secondary osteoporosis. METHODS: Nine patients (7 males, 2 females, 13.2 +/- 2.5 years, 10.1-17.4 years) with secondary osteoporosis who had a history of severe bone pain and/or fracture were enrolled. Intravenous pamidronate 1.5 mg/kg (0.5 mg/kg for 3 consecutive days) was given every 6 to 8 weeks for 0.86 +/- 0.15 years (6 or 8 cycles). Bone mineral density (BMD) in lumbar spine and femoral neck and their Z-scores were measured before treatment, after the fourth and last cycle (sixth or eighth cycle).
RESULTS
Underlying diseases were as follows; neurofibromatosis type 1 (n = 2), epilepsy with/without cerebral palsy (N=2), autoimmune disease treated with steroid (n = 2), hematologic malignancy (n = 3). Bone pain was relieved in most of the patients after the first cycle of treatment, and no more fracture occurred thereafter. There was a significant increase in BMD Z-score of the lumbar spine and femoral neck after the last cycle of therapy, compared to baseline values (from -3.91 +/- 1.79 to 1.86 +/- 1.18, in L1-4 and -3.71 +/- 1.83 to -2.53 +/- 1.77 for femoral neck; P = 0.008 and 0.011, respectively). However, there was no significant change in BMD Z-scores between the fourth cycle and the last cycle. Fever developed in 7 out of 9 patients (77.8%), which was relieved by antipyretics. Total serum levels of calcium and phosphorus were significantly decreased (calcium, P = 0.008; phosphorus, P = 0.015) after pamidronate therapy, and three of them experienced symptomatic hypocalcemia during the first cycle. The growth velocity was normal during follow-up periods (mean, 4.47 +/- 1.69 years; range, 1.05 to 6.77 years).
CONCLUSION
In conclusion, pamidronate can be administered to the patients with secondary osteoporosis, relieving the symptoms and signs effectively and safely. However, its side effects should be monitored during treatment.
Keywords: Osteoporosis;Bone density;Pamidronate;Child;Adolescent


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