Time window characteristics of cultured rat hippocampal neurons subjected to ischemia and reperfusion / 中华创伤杂志(英文版)
Chinese Journal of Traumatology
;
(6): 179-182, 2005.
Article
in English
| WPRIM
| ID: wpr-338618
ABSTRACT
<p><b>OBJECTIVE</b>To explore cell death and apoptosis in rat hippocampal neurons at different time points after ischemia, hypoxia and reperfusion injury and to elucidate time window characteristics in ischemia neuronal injury.</p><p><b>METHODS</b>Hippocampal neurons were obtained from rat embryo and were cultured in vitro. The ischemia and reperfusion of cultured rat hippocampal neurons were simulated by oxygen-glucose deprivation (OGD) and recovery. OGD at different time points (0.25 h to 3.0 h) and then the same recovery (24 h) were prepared. Annexin V-PI staining and flow cytometry examined neuron death and apoptosis at different time after injury.</p><p><b>RESULTS</b>After OGD and recovery, both necrosis and apoptosis were observed. At different times after OGD, there were statistically significant differences in neuron necrosis rate (P < 0.05), but not in apoptosis rate (P > 0.05). At recovery, survival rate of hippocampal neurons further decreased while apoptosis rate increased. Furthermore, apoptosis rates of different time differed greatly (P < 0.05). Apoptosis rate gradually increased with significant difference among those of different time points (P < 0.05). However, 2 h after ischemia, apoptosis rate decreased markedly.</p><p><b>CONCLUSIONS</b>Apoptosis is an important pathway of delayed neuron death. The therapeutic time window should be within 2 h after cerebral ischemia and hypoxia.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Physiology
/
Time Factors
/
Pregnancy, Animal
/
Reperfusion Injury
/
Cell Hypoxia
/
Cells, Cultured
/
Brain Ischemia
/
Probability
/
Sensitivity and Specificity
Type of study:
Diagnostic study
/
Prognostic study
Limits:
Animals
/
Pregnancy
Language:
English
Journal:
Chinese Journal of Traumatology
Year:
2005
Type:
Article
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