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Anti-inflammatory Effect of Hydroxyethylpuerarin on Focal Brain Ischemia/Reperfusion Injury in Rats

並列摘要


The objective of this study is to investigate the anti-inflammatory effect of hydroxyethylpuerarin on focal brain ischemia injury in rats and to explore its mechanisms of action. After 24 h of reperfusion following 2 h of cerebral ischemia, the infiltration of neutrophils was observed by myeloperoxidase (MPO) activity determination, the expression of intercellular adhesion molecule-1 (ICM-1) was observed by western blot and reverse transcriptase-polymerase chain reaction(RT-PCR) analysis, and the nuclear translocation and DNA binding activity of nuclear factor-кB (NF-кB)were observed by western blot and electrophoretic mobility shift assay (EMSA). The results showed that hydroxyethylpuerarin could obviously inhibit the MPO activity and ICAM-1 expression following 2 hours of ischemia with 24 hours of reperfusion. The nuclear translocation and DNA binding activity were also decreased by hydroxyethylpuerarin treatment. These results suggested that hydroxyethylpuerarin could inhibit neutrophil-mediated inflammatory response after brain ischemia reperfusion in rats. This effect may be mediated by down-regulation of ICAM-1 and NF-кB activity.

參考文獻


Albert, S.,Baldwin, J.(1996).The NF-kB and I kB proteins: new discoveries and insights.Annu. Rev. Immunol..14,649-681.
Barnes, P.J.,Karin, M.(1997).Nuclear factor-kB: a pivotal transcription factor in chronic inflammatory disease.N. Engl. J. Med..336,1066-1071.
Connolly, E.S.,Winfree, C.J.,Springer T.A,Naka, Y.,Liao, H.,Yan, S.D.,Stem, D.M.,Solomon, R.A.,Gutierrez-Ramos, J.-C.,Pinsky, D.J.(1996).Cerebral protection in homozygous null ICAM-1 mice after middle cerebral artery occlusion: role of neutrophil adhesion in the pathogenesis of stroke.J. Clin. Invest..97,209-216.
Huang, H.-D.,Liu, Z.-H.,Zhu, X.-J.,Chen, Z.H.,Li, L.S.(2002).Inhibition of mycophenolic acid on NF-kB activity in human endothelial cells.Acta Pharmacol. Sin..23,649-653.
Longa, E.L.,Weinstein, P.R.,Carlson, S.,Cummins R.(1989).Revesible middle cerebral artery occlusion without craniectomy in the rats.Stroke.20,84-91.

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