Linked Life Data

15072103

Source:http://linkedlifedata.com/resource/pubmed/id/15072103

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2004-4-9
pubmed:abstractText
To investigate the mechanisms of radial and tangential neuronal migration disorders, immunohistochemical expressions of reelin, vimentin, and calretinin were examined in brain lesions induced by ibotenate (an agonist of the N-methyl-D-aspartate [NMDA] complex receptor) in hamsters. Thirty-four newborn hamsters were subjected to intracerebral injections of ibotenate, and 12 animals served as the control. These hamsters were examined at 1, 2, 3, 5, and 7 days after injections. The cortical lesions observed after ibotenate injections had a strong resemblance to the following neuronal migration disorders: (1) microgyria, (2) focal subcortical heterotopia, and (3) leptomeningeal glioneuronal heterotopia. In microgyria, the radial glial fibers were sparsely distributed, but in leptomeningeal glioneuronal heterotopia, vimentin-positive fibers extended into this abnormal neural tissue. Calretinin-immunoreactive neurons and fibers were present along the lesion forming the microgyria and abnormal neuronal arrangement. Focal subcortical heterotopia also included a small number of calretinin-expressing neurons originating from the subplate neuronal population. These results imply that the neuronal migration disorders produced by ibotenate show not only the migrational arrest of neurons but also interference from the termination of the migration process. We also suggest that the heterotopic neurons constituting the focal subcortical heterotopia originate in the lateral or medial ganglionic eminence of the ventral telencephalon, probably caused by the abnormal tangential neuronal migration.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0883-0738
pubmed:author
pubmed:issnType
Print
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
107-15
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Radial and tangential neuronal migration disorder in ibotenate-induced cortical lesions in hamsters: immunohistochemical study of reelin, vimentin, and calretinin.
pubmed:affiliation
Department of Pediatrics, Shiga University of Medical Science, Seta-Tsukinowa, Otsu, Japan. tmyktkn@belle.shiga-med.ac.jp
pubmed:publicationType
Journal Article