RGD Reference Report - NMDA receptor mediated changes in IGF-II gene expression in the rat brain after injury and the possible role of nitric oxide. - Rat Genome Database

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NMDA receptor mediated changes in IGF-II gene expression in the rat brain after injury and the possible role of nitric oxide.

Authors: Giannakopoulou, M  Mansour, M  Kazanis, E  Bozas, E  Philpipidis, H  Stylianopoulou, F 
Citation: Giannakopoulou M, etal., Neuropathol Appl Neurobiol. 2000 Dec;26(6):513-21.
RGD ID: 5509972
Pubmed: PMID:11123717   (View Abstract at PubMed)

This study was undertaken in order to investigate the role of insulin-like growth factor (IGF)-II, c-fos, N-methyl-D-aspartate (NMDA) receptors, and nNOS in the cellular processes following a penetrating brain injury. IGF-II mRNA levels, as determined by Northern analysis, were decreased at 4, 8, and 24 h after brain injury, in the lesioned, compared to the contralateral intact hemisphere. Forty-eight and 72 h after the injury, there was no difference between the lesioned and the contralateral intact hemisphere in IGF-II mRNA levels. c-fos mRNA levels followed a parallel, but opposite course: They were increased at 4, 8 and 24 h after the injury, while at 48 and 72 h c-fos mRNA levels in the lesioned hemisphere did not differ from those in the intact. Administration of MK-801 reversed the injury-induced decrease in IGF-II mRNA levels. Administration of MK-801 resulted in an increase in IGF-II mRNA in both the intact and the lesioned hemispheres. Brain injury resulted in an increase in nNOS immunopositive cells in the hippocampal formation, which was detectable at 4 and 12, but not 48 h after the injury. These results suggest that IGF-II, c-fos, NMDA receptors and nNOS are involved in the cellular responses to brain injury.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Brain Injuries  ISOIgf2 (Rattus norvegicus)5509972; 5509972mRNA:decreased expression:brainRGD 
Brain Injuries  IEP 5509972mRNA:decreased expression:brainRGD 

Objects Annotated

Genes (Rattus norvegicus)
Igf2  (insulin-like growth factor 2)

Genes (Mus musculus)
Igf2  (insulin-like growth factor 2)

Genes (Homo sapiens)
IGF2  (insulin like growth factor 2)


Additional Information