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In utero central nervous system damage in pyruvate dehydrogenase deficiency
K A Aleck1, A M Kaplan, W G Sherwood
1Department of Pediatrics, Phoenix Children's Hospital, AZ 85006.
Insights
Pyruvate dehydrogenase deficiency causes congenital lactic acidosis. This study in siblings suggests central nervous system damage occurs in utero, impacting treatment and outcomes for these enzymatic defects.
Area of Science:
- Biochemistry
- Neurology
- Genetics
Background:
- Congenital lactic acidosis is a severe metabolic disorder.
- Pyruvate dehydrogenase deficiency is a primary cause of congenital lactic acidosis.
Purpose of the Study:
- To investigate pyruvate dehydrogenase deficiency in siblings with congenital lactic acidosis.
- To explore the timing and implications of central nervous system damage in affected infants.
Main Methods:
- Clinical case description of siblings.
- Computed tomography (CT) imaging analysis.
- Pathologic examination of affected tissues.
Main Results:
- Siblings presented with congenital lactic acidosis due to pyruvate dehydrogenase complex deficiency.
- CT and pathologic findings indicated in utero central nervous system damage.
- The specific enzymatic defect was identified as pyruvate dehydrogenase deficiency.
Conclusions:
- Pyruvate dehydrogenase deficiency is a significant cause of congenital lactic acidosis with potential for in utero neurological damage.
- Early identification and understanding of central nervous system involvement are crucial for managing treatment and predicting outcomes.
- This research highlights the importance of investigating enzymatic defects in congenital lactic acidosis for improved patient care.
Abstract:
Pyruvate dehydrogenase deficiency is among the most common causes of congenital lactic acidosis. We describe siblings with congenital lactic acidosis due to a deficiency of pyruvate dehydrogenase complex. The findings of computed tomography and pathologic studies suggest that central nervous system damage had occurred in utero. These observations have implications for treatment and outcome in patients with enzymatic defects causing congenital lactic acidosis.