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[Neonatal hypophosphatasia].

Jin-Lin Wu1, Juan Chen, Li Qiu

  • 1Department of Neonatology, West China Second University Hospital, Sichuan University, Chengdu 610041, China. wujl_2000@yahoo.com.cn

Zhongguo Dang Dai Er Ke Za Zhi = Chinese Journal of Contemporary Pediatrics
|June 17, 2008
PubMed
Summary
This summary is machine-generated.

Neonatal hypophosphatasia, a rare metabolic disorder, presents with severe skeletal demineralization and respiratory failure. This case highlights the critical, often fatal, presentation of this genetic condition in newborns.

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Area of Science:

  • Genetics
  • Metabolic Disorders
  • Pediatrics

Background:

  • Hypophosphatasia is a rare inherited metabolic disorder characterized by defective bone mineralization.
  • It results from mutations in the gene encoding tissue-nonspecific alkaline phosphatase (TNSALP).
  • The disease spectrum ranges from severe perinatal lethal forms to milder adult-onset presentations.

Observation:

  • A case of a 30-minute-old female neonate with suspected hypophosphatasia is presented.
  • Prenatal imaging revealed disproportionate fetal growth and limb bone abnormalities.
  • Postnatal examination showed severe craniomalacia, respiratory distress, and cyanosis.

Findings:

  • Serum alkaline phosphatase levels were significantly reduced, confirming metabolic dysfunction.
  • Radiographic and autopsy findings demonstrated extreme skeletal demineralization.
  • The infant succumbed to respiratory failure within four days of birth.

Implications:

  • This case underscores the severe and rapidly progressive nature of neonatal hypophosphatasia.
  • Early recognition and diagnosis are crucial for managing this rare genetic condition.
  • Understanding the pathogenesis is vital for developing potential therapeutic strategies.