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Related Experiment Videos

Radial glia development in the mouse olfactory bulb.

A C Puche1, M T Shipley

  • 1Department of Anatomy and Neurobiology, Program in Neuroscience, The University of Maryland, School of Medicine, Baltimore, Maryland 21201, USA. apuche@umaryland.edu

The Journal of Comparative Neurology
|May 1, 2001
PubMed
Summary

Olfactory bulb radial glia exhibit branched, convoluted structures, unlike neocortical radial glia. These cells, particularly type I and type II radial glia, may play a role in forming and stabilizing olfactory bulb glomeruli.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Cell Biology

Background:

  • Radial glia are crucial for cortical development, typically forming parallel structures.
  • Previous studies suggested olfactory bulb radial glia possess a more branched morphology.

Purpose of the Study:

  • To investigate the morphology and interactions of radial glia in the developing mouse olfactory bulb.
  • To elucidate the role of radial glia in olfactory bulb development.

Main Methods:

  • Immunohistochemical labeling of radial glia and olfactory receptor neuron axons.
  • Novel nanocrystal-based labeling (DiI) for single olfactory bulb radial glia processes.

Main Results:

  • Olfactory bulb radial glia display convoluted trajectories, not straight parallel arrangements.

Related Experiment Videos

  • Radial glia form tangential branches in the internal plexiform layer.
  • Two types of radial glia (Type I and Type II) were identified based on process extension and ramification patterns.
  • Glial glomeruli formation by radial glia processes coincides with axonal glomeruli formation by olfactory receptor neuron axons.

    • Conclusions:

    • Olfactory bulb radial glia have a distinct, branched morphology compared to neocortical radial glia.
    • Radial glia processes, particularly glial glomeruli, are spatially and temporally linked to axonal glomeruli formation.
    • Radial glia likely play a significant role in the formation and/or stabilization of mammalian olfactory glomeruli.