Expression of phosphorylated NMDA receptor 1 in the cerebral cortex after NMDA microinjection in vivo / 中国当代儿科杂志
Chinese Journal of Contemporary Pediatrics
;
(12): 51-53, 2007.
Article
in Chinese
| WPRIM
| ID: wpr-357751
ABSTRACT
<p><b>OBJECTIVE</b>The activation of N-methyl-D-aspartate(NMDA) receptors plays critical roles in the pathogenesis of diseases of the brain. This study aimed to examine the expression of phosphor-NR1 S897 in the cerebral cortex after NMDA microinjection in vivo.</p><p><b>METHODS</b>Forty seven-day-old Sprague-Dawley rats were randomly assigned into normal control and NMDA injection groups. The rats from the NMDA injection group were injected with 10 mmol of NMDA and were sacrificed 1 hr after injection. 2, 3, 5-triphenyltetrazolium chloride (TTC) and fluorescent immunohistochemical stainings were conducted and the fluorescence intensity OD value between the two groups was compared.</p><p><b>RESULTS</b>TTC staining from the two groups was normal. Expression of phosphor-NR1 S897 in the cerebral cortex of the ipsilateral hemisphere to injection in the NMDA injection group decreased significantly compared with the normal control group, with OD values of 0.366 +/- 0.087 vs 1.364 +/- 0.268 (P < 0.01).</p><p><b>CONCLUSIONS</b>NMDA microinjection, as a hypoxia-ischemia (HI) insult, significantly decreased the expression of phosphor-NR1 S897. This indicates the importance of the "HI-NMDA-phospho-NR1 S897 dephosphorylation-cell damage" pathway in HI brain damage.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Phosphorylation
/
Cerebral Cortex
/
N-Methylaspartate
/
Fluorescent Antibody Technique
/
Rats, Sprague-Dawley
/
Receptors, N-Methyl-D-Aspartate
/
Hypoxia-Ischemia, Brain
/
Metabolism
/
Microinjections
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Contemporary Pediatrics
Year:
2007
Type:
Article
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