Effect of TLR4 on the Expression of IRF-3 and IFN-β During Cerebral Ischemia Reperfusion in the Cortex of Mice
- VernacularTitle:TLR4对脑缺血再灌注小鼠皮质IRF-3和IFN-β表达的影响
- Author:
Shanshan LIU
;
Jingping LI
;
Yin GAO
- Publication Type:Journal Article
- Keywords:
cerebral ischemia reperfusion;
Toll-like receptor 4;
Toll-like receptor 4 blockade;
interferon-regulated factor-3;
interferon-β
- From:
Journal of China Medical University
2010;(2):98-100,104
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of Toll-like receptor 4(TLR4)on the expression of IRF-3 and IFN-β during the inflammatory reaction induced by cerebral ischemia reperfusion in mice.Methods Totally 144 mice were randomly divided into 3 groups:(1)ischemia reperfusion group(I group):the mice were subjected to 12 minutes ischemia by bilateral common carotid arteries(CCA)occlusion,and reperfusion without additional intervention;(2)TLR4 blocking group(T group):after 10 minutes of bilateral CCA occlusion,TLR4 antibody was injected slowly into right CCA within 2 minutes;(3)sham group(S group):no CCA occlusion was performed.At 1,2,3 and 4 d after ischemia reperfusion,the expression levels of TLR4,IRF-3 and IFN-β protein in the cortex was respectively examined by Western blot.Results In the right cortex,the expression levels of TLR4,IRF-3 and IFN-β of I group were distinctly higher than that of S and T gtoup(P<0.05);the expression levels of the 3 protein of T group were significantly higher than those of S group(P<0.05).Conclusion The cerebral ischemia reperfusion could activate TLR4 expression in the cortex of the mice.TLR4 might participate in the cerebral ischemia reperfusion through upregulating the expression of IRF-3 and IFN-β.
