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Live Imaging of the Ependymal Cilia in the Lateral Ventricles of the Mouse Brain

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Published on: June 1, 2015

[Extraependymal ependymocytes in the rat brain].

O V Kirik¹, D E Korzhevskiy

¹Northwestern Branch Institute of Experimental Medicine, RAMS, St. Petersburg, Russia

Morfologiia (Saint Petersburg, Russia)

|September 12, 2013

Summary

Researchers found cells resembling ependymocytes outside the ependymal layer in rat brains. These extraependymal cells may serve as a reserve population for neural stem cells.

Area of Science:

Neuroscience
Cell Biology
Histology

Context:

The ependymal layer lines the brain's ventricles.
Ependymocytes are specialized glial cells within the ependymal layer.
Understanding glial cell populations is crucial for neurobiology.

Purpose:

To investigate the presence and characteristics of ependymocyte-like cells outside the ependymal layer in intact rat brains.
To test the hypothesis that these extraependymal cells share features with typical ependymocytes.
To explore the potential function of these newly identified cells.

Summary:

The study identified cells with structural and cytochemical similarities to ependymocytes in the nervous tissue of Wistar rats, distinct from the main ependymal layer.
Immunocytochemical analysis using ezrin and vimentin confirmed the ependymal-like nature of these extraependymal cells.

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Light and confocal microscopy were used to visualize and characterize these cells.

Impact:

Suggests the existence of a previously unrecognized population of ependymocyte-like cells in the rat brain.
Proposes that these extraependymal ependymocytes could function as a reserve pool of neural stem cells.
Opens new avenues for research into brain repair and neurogenesis.