PMID: 3746353Aug 1, 1986Paper

The ultrastructure of the central nucleus of the inferior colliculus of the Sprague-Dawley rat

Journal of Neurocytology
C E Ribak, R C Roberts

Abstract

Previous studies from this laboratory have indicated that increased numbers of GABAergic neurons, as well as total neurons, occur in the central nucleus of the inferior colliculus (IC) of genetically epilepsy-prone rats (GEPRs) as compared to non-seizuring Sprague-Dawley rats. Since electron microscopic studies of the IC have not been reported for rats, we wanted to determine the ultrastructure of neurons and their processes in this brain region to serve as a basis for future studies on neuronal circuitry in the GEPRs. Both disc-shaped and stellate types were found for each of three size categories: large, medium and small. Thus, six types of neuron were distinguished by differences in somatic size, shape, organelles and dendritic orientation. Large neurons (longest diameter greater than 25 micron), which are the least frequent cell type, contained vast perikaryal cytoplasm, eccentrically located nuclei and abundant granular endoplasmic reticulum (GER) adjacent to the nucleus as well as clustered in the cytoplasm; many axosomatic, symmetric synapses were present. Medium-sized neuronal somata (15-25 micron in diameter) had smooth as well as infolded nuclear membranes and clusters of GER in their cytoplasm but no GER adjacent to ...Continue Reading

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Citations

May 1, 1995·Experimental Gerontology·D M CasparyR H Helfert
Dec 4, 2001·Brain Research. Molecular Brain Research·S ShiraishiR A Altschuler
Jul 22, 1998·Progress in Neurobiology·C L FaingoldA Riaz
Nov 6, 2009·The Journal of Neuroscience : the Official Journal of the Society for Neuroscience·Tetsufumi ItoDouglas L Oliver
May 15, 1992·The Journal of Comparative Neurology·E Saldaña, M A Merchán
Nov 25, 2003·Journal of Neuroscience Research·Douglas S WebberJohn Edmond
Apr 8, 1987·The Journal of Comparative Neurology·R C Roberts, C E Ribak
Aug 19, 1996·The Journal of Comparative Neurology·T González-HernándezH Pérez-González

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