Die Hypophosphatasie ist eine Gruppe von Erkrankungen, deren Ursache eine Mutation im ALPL-Gen ist. Die Vererbung kann autosomal dominant oder rezessive sein. Entsprechend der klinischen Manifestation vom Kleinkinds- bis Erwachsenenalter werden verschiedene Formen unterschieden. Das klinische Bild ähnelt einer Vitamin D-resistenten Rachitis. Laborchemisch fällt eine Hypercalciämie und ein erhöhter Phosphoethanolaminspiegel im Serum und Urin auf.
| Parameter | Interpretation |
|---|---|
| Serum-Calcium | erhöht |
| Serum-Phosphat | erhöht |
| Serum-Alkalische-Phosphatase | erniedrigt |
| Parameter | Interpretation |
|---|---|
| Serum-Phosphoethanolamin | erhöht |
| Urinausscheidung von Phosphoethanolamin | erhöht |
Zur Therapie steht das Strensiq® (asfotase alfa) zur Verfügung.
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None (1957) Hypophosphatasia.
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None () Hypophosphatasia associated with calcium pyrophosphate dihydrate deposits in cartilage. Report of a case.
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Greenberg CR et al. (1993) A homoallelic Gly317-->Asp mutation in ALPL causes the perinatal (lethal) form of hypophosphatasia in Canadian mennonites.
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Whyte MP et al. (1985) Markedly increased circulating pyridoxal-5'-phosphate levels in hypophosphatasia. Alkaline phosphatase acts in vitamin B6 metabolism.
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Whyte MP et al. (1982) Adult hypophosphatasia with chondrocalcinosis and arthropathy. Variable penetrance of hypophosphatasemia in a large Oklahoma kindred.
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Whyte MP et al. (1982) Adult hypophosphatasia: generalized deficiency of alkaline phosphatase activity demonstrated with cultured skin fibroblasts.
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Weinstein RS et al. (1981) Heterogeneity of adult hypophosphatasia. Report of severe and mild cases.
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Morava E et al. (2002) Cleidocranial dysplasia with decreased bone density and biochemical findings of hypophosphatasia.
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| 43. |
OMIM.ORG article Omim 146300
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| 44. |
Orphanet article Orphanet ID 436
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| 45. |
Wikipedia Artikel Wikipedia DE (Hypophosphatasie)
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