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Related Experiment Videos

Apoptosis in the developing CNS

I Naruse1, H Keino

  • 1Department of Morphology, Aichi Human Service Center, Kasugai, Japan.

Progress in Neurobiology
|October 1, 1995
PubMed
Summary

This review explores programmed cell death (apoptosis) in normal and abnormal central nervous system (CNS) development. It details how apoptosis can cause brain malformations like hydrocephaly and arhinencephaly.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Apoptosis is crucial for normal central nervous system (CNS) development.
  • Disruptions in apoptosis can lead to severe brain malformations.

Purpose of the Study:

  • To review the role of apoptosis in normal CNS development.
  • To discuss how abnormal apoptosis causes hydrocephaly and arhinencephaly.
  • To explore the genetic and experimental induction of these conditions.

Main Methods:

  • Review of existing literature on apoptosis in CNS development.
  • Analysis of studies on genetically induced and experimentally created brain malformations (arhinencephaly, hydrocephaly).

Main Results:

  • Identified key sites of apoptosis during normal CNS development: neural tube formation, rhombomeres, and general neuronal loss.
  • Demonstrated that abnormal apoptosis, particularly in precursor neurons, leads to arhinencephaly and hydrocephaly.
  • Proposed a sequential apoptosis model for arhinencephaly, involving olfactory bulb and pyriform cortex precursor cells.
  • Highlighted the potential role of the Gli3 gene in mesenchymal programmed cell death.

Conclusions:

  • Apoptosis is a critical regulator of CNS morphogenesis.
  • Dysregulated apoptosis is a direct cause of congenital brain abnormalities like arhinencephaly and hydrocephaly.
  • Further research into genes like Gli3 may elucidate mechanisms of developmental brain disorders.

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