Hypophosphatasia

被引:0
作者
Agnès Linglart
Martin Biosse-Duplan
机构
[1] APHP,Department of Pediatric Endocrinology and Diabetology for Children
[2] Bicêtre Paris Sud,Department of Odontology
[3] APHP,undefined
[4] Reference Center for Rare Disorders of the Calcium and Phosphate Metabolism and Plateforme d’Expertise Paris Sud Maladies Rares,undefined
[5] APHP,undefined
[6] Bretonneau Paris Nord Val de Seine,undefined
来源
Current Osteoporosis Reports | 2016年 / 14卷
关键词
Alkaline phosphatase; Craniosynostosis; Rickets; Hypophosphatasia; Exfoliated teeth; Asfotase alfa;
D O I
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中图分类号
学科分类号
摘要
Hypophosphatasia is a rare disorder due to a mutation in the ALPL gene encoding the alkaline phosphatase (ALP) leading to a diminished activity of the enzyme in bone, liver, and kidney. Hypophosphatasia is a heterogeneous disease, ranging from extreme life-threatening forms revealed at birth in young infants presenting with severely impaired bone mineralization, seizures, and hypercalcemia, to young adults with premature exfoliation of their teeth without any other symptom. We will review the challenges of the clinical, biochemical, radiological, and genetic diagnosis. Schematically, the diagnosis relies on low ALP levels and, in most cases, on the genetic defect in the ALPL gene. An enzyme replacement therapy is now developed for hypophosphatasia; early results in the severe form of the disease are extremely encouraging. However, multidisciplinary care remains the core of treatment of hypophosphatasia encompassing nutritional support, adjustment of calcium and phosphate intake, monitoring of vitamin D levels, careful and personalized physical therapy, and regular dental monitoring and care.
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页码:95 / 105
页数:10
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