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Hypophosphatasia
I J Ramage1, A J Howatson, T J Beattie
1Department of Nephrology, Royal Hospital for Sick Children, Glasgow.
Insights
Hypophosphatasia is a rare inherited metabolic disorder affecting alkaline phosphatase. This case study details infantile hypophosphatasia with hypercalcemia and its successful treatment.
Area of Science:
- Biochemistry
- Genetics
- Pediatrics
Background:
- Hypophosphatasia is a rare inherited metabolic disorder.
- It is characterized by low alkaline phosphatase activity in plasma and tissues.
- Variable genetic expression influences disease presentation and progression.
Observation:
- A case of infantile hypophosphatasia presenting with hypercalcemia is described.
- The patient exhibited a significant mineralization defect at initial presentation.
- Histological and radiological assessments were used to monitor the condition.
Findings:
- The study reports the resolution of the mineralization defect in infantile hypophosphatasia.
- Treatment led to both histological and radiological improvements.
- This highlights the potential for successful management of severe cases.
Implications:
- This case demonstrates that infantile hypophosphatasia with hypercalcemia can be effectively managed.
- Early diagnosis and intervention are crucial for improving patient outcomes.
- Further research into treatment strategies for hypophosphatasia is warranted.
Abstract:
Hypophosphatasia is a rare inherited metabolic disease characterised by reduced plasma and tissue alkaline phosphatase activity, and may present in infancy, childhood or adulthood. The differing modes of inheritance, presentation and natural history are likely to reflect variable expression of the alkaline phosphatase gene defect. A case of infantile hypophophatasia presenting with hypercalcaemia is described and the histological and radiological resolution of the mineralisation defect present initially are reported.