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Electron microscopic localization of neuron-specific enolase in rat and mouse brain
SA Vinores, MM Herman, LJ Rubinstein and PJ Marangos
The cellular distribution and intracellular localization of neuron- specific enolase (NSE) has been studied by electron microscopic immunocytochemistry in the brain of the rat and of the mouse. Although the intensity of staining was less in the mouse, the same structures were positive in both species. In the cerebrum, the neuronal perikarya and dendrites were intensely stained, but staining was almost entirely absent in the presynaptic terminals. The deep neurons of the brain stem were also positive. In the cerebellum, perikarya, axons, and parallel fibers of the granule cell neurons were stained as were the synaptic vesicles and presynaptic membranes of the synapses between the parallel fibers and the Purkinje cell dendrites. Golgi cell dendrites, basket cells and their axons, and mossy fibers were also positive. In contrast, the Purkinje cells including their dendrites, and the climbing fibers that formed synapses with the Purkinje cell dendrites were not stained. The majority of the myelinated axons in both the cerebrum and the cerebellum did not stain, but the fibrillary astrocytic processes between myelinated axons in the white matter did. Oligodendroglia, protoplasmic astrocytes, Bergmann glia, astrocytes investing capillaries, and vascular endothelial cells were negative for reaction product. In the positively staining cells and their processes, the positivity was dispersed throughout the cytoplasm and corresponded most closely to the distribution of ribosomes, the granular endoplasmic reticulum, and microtubules. Nuclei, mitochondria, the cisternae of the Golgi complex, myelin lamellae, and most membranes were not stained.
Volume 32,
Issue 12,
pp. 1295-1302,
12/01/1984
Copyright © 1984 by The Histochemical Society
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