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Related Experiment Videos

Congenital hydranencephalic-hydrocephalic syndrome associated with mitochondrial dysfunction.

M Castro-Gago1, A Alonso, E Pintos-Martínez

  • 1Department of Pediatrics, General Hospital of Galacia, Santiago de Compostela, Spain. pdcastro@uscmail.usc.es

Journal of Child Neurology
|March 12, 1999
PubMed
Summary

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Congenital hydranencephalic-hydrocephalic syndrome in a child was linked to mitochondrial respiratory chain defects. Muscle biopsy revealed alterations typical of mitochondrial disorders, suggesting a novel etiology.

Area of Science:

  • Biochemistry
  • Genetics
  • Pediatrics

Background:

  • Hydranencephalic-hydrocephalic syndrome is a rare congenital neurological disorder characterized by the absence of cerebral hemispheres and enlarged ventricles.
  • The etiology of congenital hydranencephalic-hydrocephalic syndrome is often unknown, posing diagnostic and therapeutic challenges.

Observation:

  • A 3-year-old girl with hydranencephalic-hydrocephalic syndrome presented with severe mental retardation and persistently high lactic acid levels.
  • Muscle biopsy revealed microscopic and ultrastructural abnormalities consistent with mitochondrial disorders, specifically reduced activity of mitochondrial respiratory chain complexes III and IV.

Findings:

  • Enzymatic assays in cultured skin fibroblasts showed normal activity of the pyruvate dehydrogenase complex.

Related Experiment Videos

  • The findings suggest a potential link between mitochondrial respiratory chain dysfunction and congenital hydranencephalic-hydrocephalic syndrome.

    • Implications:

    • This case highlights the importance of investigating mitochondrial function in cases of congenital hydranencephalic-hydrocephalic syndrome with unexplained lactic acidosis.
    • Identifying mitochondrial disorders as a potential cause could lead to earlier diagnosis and targeted research for this severe condition.