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Related Concept Videos

Cytoskeletal Coordination in Cell Migration01:32

Cytoskeletal Coordination in Cell Migration

A migrating cell changes its shape during the cyclic events of attachment and detachment from the substratum and repositions the cell organelles correspondingly. These complex events are orchestrated by the dynamic cytoskeletal network comprising actin filaments, intermediate filaments, and microtubules. Cytoskeletal crosstalk — the direct and indirect communication between the different components — is crucial for this coordination. Direct communication involves various linker proteins that...
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In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

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Related Experiment Video

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Migratory Behavior of Cells Generated in Ganglionic Eminence Cultures
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Published on: April 21, 2011

New trends in neuronal migration disorders.

Alberto Verrotti1, Alberto Spalice, Fabiana Ursitti

  • 1Department of Pediatrics, University of Chieti, Italy.

European Journal of Paediatric Neurology : EJPN : Official Journal of the European Paediatric Neurology Society
|March 7, 2009
PubMed
Summary

Neuronal migration disorders cause significant childhood neurological disabilities. Recent molecular genetics research has greatly advanced understanding of these complex developmental conditions.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genetics

Background:

  • Neuronal migration disorders are a major cause of childhood neurological and developmental disabilities, including epilepsy.
  • These disorders arise from disruptions in the precise movement of neurons during brain development.
  • Recent advances in molecular biology and genetics have significantly enhanced our understanding of neuronal migration regulation.

Purpose of the Study:

  • To review the clinical and pathophysiological aspects of major neuronal migration disorders.
  • To highlight recent advances in the molecular genetics underlying these conditions.
  • To provide a comprehensive overview for researchers and clinicians.

Main Methods:

  • Literature review focusing on clinical presentations and genetic mechanisms.
  • Synthesis of data from molecular biologic and genetic investigations.
  • Analysis of recent research on neuronal migration regulation.

Main Results:

  • Lissencephaly, characterized by a smooth brain, includes classical (arrested migration) and cobblestone (overmigration) subtypes.
  • Heterotopia involves disorganized neuron clusters in abnormal locations (periventricular, subcortical, marginal).
  • Polymicrogyria and schizencephaly represent later-stage or variable neuronal migration defects with distinct clinical syndromes.

Conclusions:

  • Neuronal migration disorders encompass a spectrum of conditions with diverse genetic underpinnings.
  • Continued molecular genetic research is crucial for unraveling the complex pathophysiology of these disorders.
  • Improved understanding facilitates potential diagnostic and therapeutic advancements for affected children.