Summary
Between adjacent astrocytes in cerebral and particularly cerebellar cortices of brains unsuccessfully perfused or subjected to 2–30 min anoxia or short (5 h) autolysis, a new distinct and unusual variant of an intercellular apposition was observed, which derived from already pre-existing membrane contacts. This membrane apposition was characterized by thicker contacting plasma membranes than usual, narrower intercellular distance, a fine para- and intermembranous material and ribosomes in the paramembranous position. In addition to these ribosome associated membrane appositions ribosomes-associated gap junction and microtubule-associated junction were observed in isolated cases. The reason for binding of ribosomes and microtubules to the plasma membrane and their function in this site is unknown.
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Špaček, J. Ribosome-associated membrane contacts between astrocytes in the anoxic brain. Acta Neuropathol 57, 270–274 (1982). https://doi.org/10.1007/BF00692182
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DOI: https://doi.org/10.1007/BF00692182