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Pyruvate dehydrogenase E1 alpha deficiency

G K Brown1

  • 1Department of Biochemistry, University of Oxford, UK.

Journal of Inherited Metabolic Disease
|January 1, 1992
PubMed

Insights

Pyruvate dehydrogenase (PDH) deficiency, often causing lactic acidosis, can also present as neurodegeneration. This X-linked disorder, primarily due to E1 alpha defects, affects heterozygous females, complicating diagnosis.

Area of Science:

  • Biochemistry
  • Genetics
  • Neurology

Background:

  • Pyruvate dehydrogenase (PDH) deficiency is a primary cause of lactic acidosis in children.
  • It is increasingly recognized in neurodegenerative disorders without significant acidosis.
  • Most cases stem from genetic defects in the PDH E1 alpha subunit.

Purpose of the Study:

  • To review 29 patients with PDH E1 alpha deficiency.
  • To emphasize X-linked aspects of the disorder.
  • To highlight diagnostic challenges, particularly in females.

Main Methods:

  • Literature review focusing on PDH E1 alpha deficiency.
  • Analysis of clinical presentations and diagnostic issues.
  • Emphasis on X-linked inheritance patterns.

Main Results:

  • PDH E1 alpha deficiency presents a broad clinical spectrum.
  • Heterozygous females frequently manifest the condition.
  • Diagnostic challenges are significant, especially for antenatal diagnosis in females.

Conclusions:

  • PDH E1 alpha deficiency has diverse clinical manifestations.
  • The X-linked nature complicates diagnosis, particularly in females.
  • Further research into antenatal diagnosis is warranted.

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