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Cranial computerized tomography in dihydropteridine reductase deficiency.
Journal of Inherited Metabolic Disease
|January 1, 1985
Summary
Dihydropteridine reductase deficiency causes severe neurological issues in children, even with early treatment. This rare hyperphenylalaninaemia condition leads to progressive worsening and white matter degeneration.
Area of Science:
- Biochemistry
- Genetics
- Neurology
Background:
- Dihydropteridine reductase (DHPR) deficiency is a rare genetic disorder causing hyperphenylalaninaemia.
- It leads to severe neurological impairment despite dietary management of plasma phenylalanine levels.
Observation:
- Two girls with DHPR deficiency were treated early with L-dopa, 5-hydroxytryptophan, and carbidopa.
- Despite adequate treatment, both patients experienced progressive clinical and neurological deterioration.
Findings:
- Cranial CT scans revealed white matter degeneration in both patients.
- One patient also showed calcification of the basal ganglia, potentially linked to folate depletion.
Implications:
- This case highlights the challenges in managing DHPR deficiency.
- Further research into the role of folate metabolism in DHPR deficiency is warranted.