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[Glutaric acidemia/glutaric aciduria I as differential chorea minor diagnosis]
R Voll1, G F Hoffmann, C G Lipinski
1Abteilung: Pädiatrie/Neuropädiatrie, Rehabilitationsklinik Neckargemünd.
Insights
Glutaric acidemia type I is a rare childhood disorder affecting the brain. Early diagnosis of glutaric aciduria is crucial for managing neurological symptoms like choreoathetosis.
Area of Science:
- Biochemistry
- Neurology
- Genetics
Background:
- Glutaric acidemia type I (GA-I) is an inherited metabolic disorder.
- It results from a deficiency in the enzyme glutaryl-CoA-dehydrogenase.
- This deficiency leads to the accumulation of toxic metabolites.
Observation:
- A case of GA-I is presented in a three-year-old girl.
- Clinical manifestations included congenital macrocephaly and cerebral atrophy (frontal and temporal lobes).
- Neurological impairments presented as choreoathetosis and dystonia.
Findings:
- Elevated levels of glutaric acid in the blood (glutaracidemia) and urine (glutaraciduria) confirm the diagnosis.
- Cerebral atrophy on CT/MRI scans is a characteristic finding.
- The disorder presents as an acute or subacute neuropathic condition.
Implications:
- GA-I requires early diagnosis and management to mitigate severe neurological deficits.
- Glutaraciduria serves as a critical differential diagnosis for conditions like chorea minor.
- Understanding the biochemical pathway is key to developing therapeutic strategies for GA-I.
Abstract:
Glutaracidemia/glutaraciduria type I is an acute or subacute neuropathic disorder of infancy or early childhood. The following symptoms characterize the clinical course: macrocephalus present at birth, cerebral atrophy revealed by CT or MRI scans, most striking in the frontal and temporal lobes, choreoathetosis and dystonia as neurological handicaps. The deficiency of glutaryl-CoA-dehydrogenase leads to glutaracidemia and glutaraciduria. It is reported on a three year old girl. The glutaraciduria is an important differential diagnosis to chorea minor.