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[Friedreich's ataxia and hereditary vitamin E deficiency. Case study]
P Labauge1, L Cavalier, L Ichalalène
1Service de Neurologie, CHU de Nîmes.
Revue Neurologique
|October 17, 1998
Summary
Familial isolated vitamin E deficiency (AVED) caused neurological symptoms in a patient. Vitamin E therapy successfully stabilized these symptoms, highlighting the importance of alpha-tocopherol transfer protein.
Area of Science:
- Neurology
- Genetics
- Nutritional Science
Background:
- Familial isolated vitamin E deficiency (AVED) is a rare genetic disorder.
- It is characterized by progressive neurodegeneration due to impaired vitamin E absorption.
- Consanguinity increases the risk of autosomal recessive genetic disorders like AVED.
Observation:
- A 24-year-old patient presented with cerebellar syndrome, ataxia, proprioception loss, Babinski sign, and areflexia.
- Genetic testing excluded Friedreich's ataxia.
- Extremely low plasma vitamin E levels were detected.
Findings:
- A point mutation in the alpha-tocopherol transfer protein (alpha-TTP) gene confirmed the diagnosis of AVED.
- Vitamin E supplementation normalized serum vitamin E levels.
- Neurological symptoms showed stabilization following treatment.
Implications:
- Early diagnosis and treatment of AVED are crucial for preventing irreversible neurological damage.
- Alpha-TTP gene sequencing is vital for diagnosing AVED.
- Vitamin E therapy is an effective treatment for stabilizing neurological deficits in AVED patients.