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Neuroglia of the adult rat optic nerve in the course of wallerian degeneration



Neuroglia of the adult rat optic nerve in the course of wallerian degeneration



Proceedings of the National Science Council Republic of China. Part B Life Sciences 8(4): 324-334



The neurological reactions in Wallerian degeneration have been studied by electron microscopy in the optic nerve of adult albino rats from 7 to 120 days after unilateral enucleation. Reactive astrocytes contained abundant dense bodies, numerous microtubules and hyperplastic glial filaments. These astrocytes also assisted phagocytosis of degenerated myelin sheaths and in glial scar formation. Oligodendrocytes disconnected their cytoplasmic extensions, which were phagocytosed by microglial cells and astrocytes, by increased production of lysosomes. Microglial cells consisted of crinkled, long, rough endoplasmic reticula, several highly-active Golgi complexes, laminar inclusions and globoid lipid droplets. Microglia engulfed and lysed the disintegrated axons and myelin sheaths.

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Accession: 005969231

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PMID: 6571594


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