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不同脑温对树鼩局部脑缺血海马血管内皮细胞生长因子表达的影响 被引量:2
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作者 李飞 李树清 《中国微循环》 2009年第3期154-156,F0002,共4页
目的研究不同脑温(亚低温、常温及高温)对树鼩局部脑缺血海马CA1区内皮细胞生长因子(vascular endothelial growth factor,VEGF)表达的影响,探讨缺血时脑温对VEGF表达的影响。方法建立光化学诱导树鼩皮层脑缺血模型,于缺血后6h采用局部... 目的研究不同脑温(亚低温、常温及高温)对树鼩局部脑缺血海马CA1区内皮细胞生长因子(vascular endothelial growth factor,VEGF)表达的影响,探讨缺血时脑温对VEGF表达的影响。方法建立光化学诱导树鼩皮层脑缺血模型,于缺血后6h采用局部恒温控温装置维持脑温在亚低温(31~32℃)、常温(36~37℃)和高温(39~40℃)三种不同温度状态持续1h。于缺血后24h及72h处死动物,用免疫组化染色方法染色及图像分析仪测定海马CA1区VEGF表达的不同强度。结果局部脑缺血后海马CA1区VEGF表达随温度的增加而减弱,亦随时间的延长而减弱;其中以72h时31℃组VEGF的表达下降最为明显(P<0.01)。结论亚低温后处理将在脑缺血的早期发挥脑保护作用,其脑保护作用可能与亚低温能增强VEGF的表达有关。低温脑保护的意义在于延长脑缺血治疗时间窗。 展开更多
关键词 光化学 局灶性脑血栓 VEGF 温度 低温后适应 树鼩
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Xiao-Xu-Ming decoction extract ameliorates brain injury in rats with thrombotic focal ischemic stroke and understanding possible therapeutic targets using proteomics 被引量:6
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作者 Yinglin Yang Shanshan Zhang +2 位作者 Man Liu Yuehua Wang Guanhua Du 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2021年第6期468-483,共16页
Ischemic stroke seriously threatens human health and quality of life.Xiao-Xu-Ming(XXM)decoction has been a classical prescription for stroke therapy.In our previous studies,we have found that XXM exerts neuroprotectiv... Ischemic stroke seriously threatens human health and quality of life.Xiao-Xu-Ming(XXM)decoction has been a classical prescription for stroke therapy.In our previous studies,we have found that XXM exerts neuroprotective effects,improves brain injury,and attenuates neuroinflammation in cerebral ischemia rats.In this study,we investigated the effects and possible mechanism of XXM on thrombotic focal cerebral ischemia.After treatment with XXM,the neurological function and motor abilities were improved,and cerebral infarction volume was significantly decreased compared with rats of thrombotic focal cerebral ischemia.Besides,the results of BBB integrity detected by EB leakage and tight junction(TJ)protein expression showed that XXM could maintain BBB integrity and improve the expressions of TJ proteins,including claudin-1,occluding,and ZO-1,in the ischemic ipsilateral cortex disrupted by thrombotic cerebral ischemia.Furthermore,proteomic techniques were used to identify the differentially expressed proteins(DEPs)in the ischemic cerebral cortex,and the results showed that 132 DEPs regulated by XXM were detected in the ischemic cerebral cortex.Bioinformatic analysis showed that these regulated proteins by XXM were mainly involved in complement and coagulation cascade,and lysosome,etc.Furthermore,there was an interaction among DEPs,including Lgals3,Ctsz,Capg,C1qa,S100a4,Grn,Hspb1,Aif1,and Anxa1,etc.In conclusion,XXM ameliorated brain injury of thrombotic focal ischemic stroke,and Lgals3,Ctsz,Capg,C1qa,S100a4,Grn,Hspb1,Aif1,and Anxa1 could help provide possible therapeutic targets of XXM for ischemic stroke and offer research direction for further research. 展开更多
关键词 Xiao-Xu-Ming decoction Thrombotic focal ischemic stroke Blood-brain barrier PROTEOMICS
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