【摘 要】
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Cerebral angiogenesis in the early stages after cerebral ischemia injury is essential for the recovery of nerve function,in which fetal liver kinase-1(Flk-1),as
【机 构】
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Geriatrics Department,Henan College of Traditional Chinese Medicine,Zhengzhou 450000,Henan Province,
论文部分内容阅读
Cerebral angiogenesis in the early stages after cerebral ischemia injury is essential for the recovery of nerve function,in which fetal liver kinase-1(Flk-1),as a major regulator of vasculogenesis and angiogenesis,plays a very important role.Microvessel density(MVD)was greater in an aged model group compared with the young sham operated group(P < 0.01).MVD and the sum of the lumen area were decreased in the aged group at 1,3,6 and 12 days following ischemia/reperfusion(I/R)injury compared with the young model group(P < 0.05 and P < 0.01,respectively).Flk-1 protein and mRNA expression was greater in the aged model group when compared with the young sham operated group(P < 0.01).Flk-1 protein and mRNA expression was lower in the aged group at 1,3,6 and 12 days after I/R compared with the young model group(P < 0.01).Flk-1 expression in aged rats attenuated rapidly,but was still maintained at relatively higher levels at 12 days following I/R in younger rats.The results suggest that angiogenesis was weakened after cerebral I/R in aged rats,and the mechanism of which might be correlated with attenuated expression of Flk-1 protein and mRNA.
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