Effects of two kinds of Chinese medicine compound on expression of Notch-1 and Jagged1 in ischemic penumbra after local cerebral ischemia/reperfusion in MCAO rats / 中国病理生理杂志

ABSTRACT

AIM: To investigate the effects of Yiqi Huoxue prescription and Bushen Shengsui prescription on the expression of Notch-1 and Jagged1 protein in ischemic penumbra after local cerebral ischemia/reperfusion in intraluminal thread occlusion of the middle cerebral artery (MCAO) rats. METHODS: The local cerebral ischemia/reperfusion model was established by intraluminal thread occlusion of the middle cerebral artery. The animals were randomly divided into pseudo surgery group (sham group), model (MCAO) group, Yiqi Huoxue prescription (MCAO+Yiqi Huoxue) and Bushen Shengsui prescription (MCAO+Bushen Shengsui) groups. Using the techniques of immuno-histochemical staining, the expression of Notch-1 and Jagged1 was observed at 1, 2 and 3 weeks in ischemic penumbra of the cortex of frontal and parietal lobe. RESULTS: A value and positive unit of Notch-1 and Jagged1 protein expression in model group were higher than those in sham in ischemic penumbra of the cortex of frontal or parietal lobe after local cerebral ischemia/reperfusion in MCAO rats (P<0.05 or P<0.01). A value and/or positive unit of the expression in Yiqi Huoxue prescription and Bushen Shengsui prescription groups were lower than those in model group (P<0.05 or P<0.01). CONCLUSION: Yiqi Huoxue prescription and Bushen Shengsui prescription affect the proliferation and differentiation of neural stem cells, depress Notch signal transduction after local cerebral ischemia/reperfusion in MCAO rats by inhibiting the expression of Notch-1and Jagged1 protein.