期刊
JOURNAL OF CLINICAL RESEARCH IN PEDIATRIC ENDOCRINOLOGY
卷 4, 期 1, 页码 34-38出版社
TURKISH PEDIATRIC ENDOCRINOLOGY & DIABETES SOCIETY
DOI: 10.4274/jcrpe.473
关键词
Hypophosphatasia; pyridoxine-responsive seizures; bisphosphonates; alkaline phosphatase; bone resorption; hypercalcemia
Hypophosphatasia (HPP) is an inborn error of metabolism characterized by defective bone mineralization caused by a deficiency in alkaline phosphatase (ALP) activity due to mutations in the tissue-nonspecific ALP (TNALP) gene. The clinical expression of the disease is variable. Six forms of HPP are identified according to age at presentation and clinical features. Patients with the infantile form are normal at birth. First symptoms appear within the first 6 months of life. Along with skeletal findings, HPP patients may present with hypercalcemia, seizures, pseudotumor cerebri, and pulmonary insufficiency. Seizures in HPP are refractory to conventional antiepileptic drugs, but are responsive to pyridoxine. Herein, we report a case of HPP who presented with pyridoxine-responsive seizures in the early neonatal period and was found to have hypercalcemia, skeletal demineralization and increased intracranial pressure.
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