Ribosome number of the satellite glia and neuroglial relationship in the cerebral cortex of the cat in the wakefulness-sleep cycle
Fedorenko, G.M.; Gusatinskiĭ, V.N.; Fel'dman, G.L.
Tsitologiia 25(3): 272-277
1983
ISSN/ISBN: 0041-3771 PMID: 6679423 Document Number: 212070
The ultrastructural analysis of satellite glia cells and adjacent large pyramidal neurons of parietal cortex of the cat showed regular changes in the amount of ribosomes in various phases of the wakefulness-sleep cycle. These changes have a reciprocal character in glia and neurons. During the slow wave phase of sleep (SWS) in comparison with wakefulness (W) the amount of glial ribosomes in a unit of electronogram area increased, while in neurons it decreased. In the paradoxal phase of sleep (PS), the number of ribosomes in glia, compared with SWS, decreased, but in neurons at the same time it increased. Variations in the amount of ribosomes of glial cell cytoplasm are most prominent in the zone of contact with the neuron. The obtained data suggest a link in protein metabolism of neurons and glia, and the changes in neuroglial relationship during sleep development.