Relationship between programmed cell death mechanisms and neuronal necrosis induced by seizures / 中华儿科杂志
Chinese Journal of Pediatrics
;
(12): 290-292, 2003.
Article
in Chinese
| WPRIM
| ID: wpr-345452
ABSTRACT
<p><b>OBJECTIVE</b>To clarify if programmed cell death mechanisms induced by seizures take part in the necrotic process of neurons.</p><p><b>METHODS</b>Seizure was induced by pilocarpine (P) in Sprague-Dawley adult rats which were allowed to recover for 24 or 72 hours before perfusion-fixation. Neuronal death was assessed by light microscopy with the hematoxylin-eosin (HE) staining and with in situ terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL). Bax and Bcl-2 protein expression were examined by histochemistry.</p><p><b>RESULTS</b>Twenty-four and 72 hours after seizures, neuronal death in hippocampus CA1 region was morphologically necrotic. TUNEL-positive and morphologically necrotic cells increased in the hippocampal CA1 region at 72 hours after seizures, there was significant difference compared with controls (P < 0.001). Bax expression was also increased in the hippocampal CA1 region at 72 hours after seizures (P < 0.001), but Bcl-2 expression did not increase, while Bcl-2/Bax ratio decreased.</p><p><b>CONCLUSION</b>Seizures induced late-onset neuronal necrosis was accompanied by programmed cell death mechanisms.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Seizures
/
Chemistry
/
Proto-Oncogene Proteins
/
Rats, Sprague-Dawley
/
Apoptosis
/
Proto-Oncogene Proteins c-bcl-2
/
In Situ Nick-End Labeling
/
Bcl-2-Associated X Protein
/
Hippocampus
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Pediatrics
Year:
2003
Type:
Article
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