VEGF Promotes Angiogenesis and Functional Recovery in Stroke Rats

被引:99
作者
Yang, Ji-Ping [1 ,2 ]
Liu, Huai-Jun [2 ]
Liu, Xin-Feng [1 ]
机构
[1] Nanjing Univ, Sch Med, Dept Neurol, Jinling Hosp, Nanjing 210002, Jiangsu, Peoples R China
[2] Hebei Med Univ, Hosp 2, Dept Med Imaging, Shijiazhuang, Hebei, Peoples R China
关键词
intranasal administration; middle cerebral artery occlusion; vascular endothelial growth factor; functional recovery; angiogenesis; cerebral ischemia; ENDOTHELIAL GROWTH-FACTOR; MIDDLE CEREBRAL-ARTERY; BLOOD-BRAIN-BARRIER; ISCHEMIC-STROKE; INDUCED NEUROPROTECTION; FACTOR EXPRESSION; NERVOUS-SYSTEM; FACTOR-I; OCCLUSION; RECEPTORS;
D O I
10.3109/08941930903469482
中图分类号
R61 [外科手术学];
学科分类号
摘要
We evaluated the effects of intranasal vascular endothelial growth factor VEGF on neurological function and angiogenesis in ischemic boundary following cerebral ischemia. Sprague-Dawley rats were randomized into sham operation group (n = 9), VEGF group (n = 18), and control group (n = 18). The VEGF and control rats were intranasally administered (IN) with VEGF or saline, starting three days after middle cerebral artery occlusion (MCAO) and daily. Neurological scores were obtained at 1, 7, and 14 days after MCAO. Rats were sacrificed at 14 days, the von Willebrand factor (vWF) immunoreactive, BrdU(+)/vWF(+) cells, and microvessels were evaluated respectively. Compared to the control rats, intranasal administration of VEGF improved behavioral recovery, and increased the number of vWF(+), BrdU(+)/vWF(+) cells, and FITC-dextran perfused microvessels in ischemic boundary (p < .01). Our data suggest that intranasal administration of VEGF may induce angiogenesis in ischemic boundary and improve behavioral recovery following cerebral ischemia in rats, which may provide a powerful strategy for stroke.
引用
收藏
页码:149 / 155
页数:7
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