1998) Direct immunogold labeling of aquaporin-4 in square arrays of astrocyte and ependymocyte
plasma membranes in the rat brain and spinal cord.
During embryogenesis the neuroectoderm divides to give rise to neuroepithelium which further divides into neuroblast, the spongioblast and the primitive ependymocytes
Aquaporin 4 was present in high amounts in astrocytes and ependymocytes and in low amounts in the choroidal plexus epithelia and leptomeningeal cells.
Positivity was intense in choroid plexus cells, inner and outer glia limitans, and leptomeninges and was moderate in ependymocytes and the perivascular endfeet.
3) The cortical location of the great majority of these tumors, however, argues against derivation from native ependymocytes
Presence of pathological forms of erythrocytes on the surface of ependymocytes
suggests that they can also be in the fluid of ventricles.
At a higher magnification, the vimentin-IR was detected in glial cells, namely in ependymocytes that compose the wall of the 3V, and in astrocytes surrounding blood vessels (Fig.
The functional significance of vimentin expression in ependymocytes of the 3V wall and adjacent astrocytes of PV may be to increase the cell flexibility in ionic (K+) clearance during the repeated electrical activation of MCN.