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The mitochondrial epilepsies.

Albert Lim1, Rhys H Thomas2

  • 1Department of Paediatrics, Great Northern Children's Hospital, Queen Victoria Rd, Newcastle-Upon-Tyne, NE1 4LP, United Kingdom; Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle-Upon-Tyne, NE2 4HH, United Kingdom.

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|January 25, 2020
PubMed
Summary
This summary is machine-generated.

Mitochondrial dysfunction can cause metabolic epilepsies, often affecting the brain. Treatment focuses on managing seizures, with caution advised for sodium valproate in certain mitochondrial disorders.

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Area of Science:

  • Cellular Biology
  • Neuroscience
  • Metabolic Disorders

Background:

  • Mitochondria are crucial for cellular energy production.
  • Mitochondrial dysfunction impacts high-demand organs like the brain.
  • Metabolic epilepsies are a key neurological manifestation of mitochondrial disease.

Purpose of the Study:

  • To describe the characteristics of metabolic epilepsies associated with mitochondrial dysfunction.
  • To highlight specific seizure patterns and onset in mitochondrial epilepsy.
  • To discuss current management strategies and contraindications for mitochondrial epilepsy.

Main Methods:

  • Literature review of mitochondrial disorders and epilepsy.
  • Analysis of clinical features and seizure semiology in mitochondrial epilepsy.
  • Review of treatment guidelines and drug safety in mitochondrial disease.

Main Results:

  • Mitochondrial epilepsy often presents with posterior/occipital onset seizures.
  • Non-convulsive status epilepticus is common and treatment-resistant.
  • Onset can occur at any age, with specific syndromes linked to childhood or adult epilepsy.

Conclusions:

  • Mitochondrial epilepsy requires specialist neurological management.
  • Sodium valproate should be avoided in POLG-related disorders due to severe hepatotoxicity.
  • No curative treatments exist; seizure management is paramount.