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Neuropathology of Rett syndrome.

Dawna Duncan Armstrong1

  • 1The Blue Bird Circle Rett Center, Baylor College of Medicine, Houston, TX 77030, USA. dawnaa@bcm.tmc.edu

Journal of Child Neurology
|October 18, 2005
PubMed
Summary

Rett syndrome, a neurodevelopmental disorder affecting girls, is often caused by mutations in the methyl-CpG binding protein 2 gene (MECP2). Research is exploring MECP2

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Neuropathology of Rett syndrome.

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Area of Science:

  • Neuroscience
  • Genetics
  • Developmental Biology

Background:

  • Rett syndrome is a rare neurodevelopmental disorder affecting approximately 1 in 10,000 to 23,000 girls globally.
  • The disorder is characterized by profound mental and motor impairments.
  • Mutations in the methyl-CpG binding protein 2 gene (MECP2) are implicated in about 90% of cases.

Purpose of the Study:

  • To review the neuropathology of Rett syndrome.
  • To summarize current research on the pathoetiology of Rett syndrome using human and mouse models.
  • To investigate the role of MECP2 in the pathogenesis of this disorder.

Main Methods:

  • Review of neuropathological findings in Rett syndrome.
  • Summary of studies involving human and mouse brains affected by Rett syndrome.
  • Analysis of the clinical presentation, physiology, chemistry, and pathology of the disorder.

Main Results:

  • Neuropathology in Rett syndrome involves decreased size, dendritic branching, and spine numbers in individual neurons.
  • Studies in human and mouse brains are beginning to elucidate the disorder's pathoetiology.

Conclusions:

  • The methyl-CpG binding protein 2 gene (MECP2) plays a critical role in the pathogenesis of Rett syndrome.
  • Ongoing research in animal models is crucial for understanding the complex mechanisms underlying Rett syndrome.
  • Further investigation into neuronal changes is key to unraveling the disorder's pathoetiology.

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