Activation of Kupffer cell TLR2 signaling pathway during hepatic ischemia/reperfusion injury process in mice and it's significance / 中华肝脏病杂志
Chinese Journal of Hepatology
; (12): 447-450, 2005.
Article
in Zh
| WPRIM
| ID: wpr-348778
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To study changes of TLR2 signaling pathway expression in Kupffer cells during the process of hepatic ischemia/reperfusion in a mice model and the mechanism of TLR2 signaling pathway participating in hepatic ischemia/reperfusion injury.</p><p><b>METHODS</b>BALB/c mice were divided into 3 groups sham operation (SH), ischemia/reperfusion (I/R) and GdCl3 treatment (Gd) groups. After 4 h of reperfusion, the expression of TLR2 mRNA and membrane TLR2 protein were analyzed in ischemic lobes of the livers, and in Kupffer cells isolated from ischemic lobes. The expression of NF-kappaB in ischemic lobes was also examined. Levels of endotoxin, ALT and TNFalpha were measured at the same time point.</p><p><b>RESULTS</b>The expressions of TLR2 mRNA and protein in both ischemic hepatic lobes and Kupffer cells isolated from ischemic lobes were increased in the I/R group compared to those in the SH group, as well as the expression of NF-kappaB in ischemic lobes, which was down regulated by intravenous GdCl3 treatment. Levels of ALT and TNFalpha in the portal vein were higher in the I/R group than in the SH group, which also were decreased with treatment of GdCl3. The level of endotoxin in the three groups remained constant.</p><p><b>CONCLUSION</b>TLR2 signaling pathway in Kupffer cells is activated during the process of hepatic ischemic/reperfusion injury. The activation of TLR2 signaling pathway in Kupffer cells may play a role in this process.</p>
Full text:
1
Database:
WPRIM
Main subject:
Reperfusion Injury
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Signal Transduction
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Toll-Like Receptor 2
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Genetics
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Kupffer Cells
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Liver
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Metabolism
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Mice, Inbred BALB C
Limits:
Animals
Language:
Zh
Journal:
Chinese Journal of Hepatology
Year:
2005
Document type:
Article