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Related Experiment Videos

The trigeminal system: an advantageous experimental model for studying neuronal development.

A M Davies1

  • 1Department of Anatomy, St. George's Hospital Medical School, Tooting, London.

Development (Cambridge, England)
|January 1, 1988
PubMed
Summary

The trigeminal system

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Area of Science:

  • Neuroscience
  • Developmental Biology

Background:

  • The trigeminal system offers a clear model for studying neural development due to its accessible components.
  • Previous research has advanced understanding of axonal guidance, neurotrophic factors, and neural connection refinement.

Purpose of the Study:

  • To investigate fundamental aspects of neural development using the trigeminal system.
  • To elucidate mechanisms of axonal guidance and neurotrophic factor roles.

Main Methods:

  • Utilized the well-defined trigeminal system in mammals and birds for developmental studies.
  • Examined the synthesis and receptor expression of nerve growth factor (NGF).

Main Results:

  • Provided the first strong evidence for chemotropic axonal guidance.
  • Clarified the synthesis and receptor expression of NGF, defining its developmental role.
  • Discovered that neuronal survival is regulated by distinct neurotrophic factors from separate target fields.

Conclusions:

  • The trigeminal system is crucial for understanding neural development, axonal guidance, and neurotrophic factor function.
  • NGF plays a key role in development, with its synthesis and receptor expression now understood.
  • Neuronal survival is dynamically regulated by multiple neurotrophic factors, challenging previous assumptions.

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