Linked Life Data

1675422

Source:http://linkedlifedata.com/resource/pubmed/id/1675422

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-7-15
pubmed:abstractText
In other systems such as the hypothalamus and hippocampus, it has been shown that cells postsynaptic with respect to glutamatergic inputs degenerate when exposed to large doses of glutamate ("glutamate neurotoxicity"). We have shown that large doses of glutamate administered intraperitoneally are toxic to spiral ganglion cells in the inner ear of the rat. In the present study, we have investigated whether similar levels of glutamate cause alterations in the neurons of the cochlear nuclei. Specifically, we have studied the morphology and size of the cochlear nuclear complex and its subdivisions as well as the size and density of cochlear nucleus neurons following administration of glutamate. The morphological evidence indicates that glutamate caused severe anatomical alteration of the cochlear nuclei. The changes were most pronounced in the anteroventral cochlear nucleus, especially in the neurons that receive terminals of the end bulbs of Held from the cochlear nerve. This could be a direct effect of glutamate in the cochlear nuclei or secondary to degeneration of cochlear nerve fibers in the inner ear.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0892-0362
pubmed:author
pubmed:issnType
Print
pubmed:volume
13
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
189-93
pubmed:dateRevised
2009-10-26
pubmed:meshHeading
pubmed:articleTitle
Glutamate neurotoxicity in rat auditory system: cochlear nuclear complex.
pubmed:affiliation
Department of Anatomical Sciences and Neurobiology, University of Louisville School of Medicine, KY 40292.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't