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Oxidative damage and repair in the developing nervous system

M A Verity1

  • 1Division of Neuropathology, UCLA Center for the Health Sciences 90024-1732.

Neurotoxicology
|January 1, 1994
PubMed
Summary

Oxidative stress, from reactive oxygen species (ROS), influences neuronal development and neurogenesis. This review explores its role in normal and abnormal neuronal patterns, apoptosis, and neurotoxicology.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Toxicology

Background:

  • Reactive oxygen species (ROS) production can cause cell injury.
  • Oxidative stress also plays a role in cell proliferation, differentiation, and tumor promotion.
  • Understanding oxidative stress is crucial for neurodevelopmental research.

Purpose of the Study:

  • To review the role of oxidative stress in neuronal pattern establishment and neurogenesis.
  • To examine apoptosis in normal and abnormal neuronal development, particularly after ligand-induced ion movements.
  • To discuss the interaction between oxidant stress, immediate-early gene response, and apoptosis.

Main Methods:

  • Literature review of studies on oxidative stress and neurodevelopment.
  • Analysis of apoptosis induction mechanisms in neuronal development.
  • Examination of the role of glutathione redox potential and cystine uptake in neuronal survival.
  • Presentation of examples of ROS-induced injury in developmental neurotoxicology.

Main Results:

  • Oxidative stress is implicated in initiating and promoting normal or abnormal neuronal patterns and neurogenesis.
  • Apoptosis plays a role in both normal and abnormal neuronal development and maturation.
  • Glutamate receptor activation is essential for neuronal maturation and survival, dependent on intracellular glutathione redox potential.
  • ROS-induced injuries, including starvation, irradiation, and glutamate excitotoxicity, impact developmental neurotoxicology.

Conclusions:

  • Oxidative stress is a critical factor in neurodevelopment, influencing neuronal patterning, neurogenesis, and maturation.
  • Apoptosis is a key mechanism through which oxidative stress affects neuronal development.
  • Maintaining intracellular glutathione redox potential is vital for neuronal survival and differentiation.
  • Developmental neurotoxicology must consider the impact of ROS-induced injuries.

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