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首页> 外文期刊>Journal of stroke and cerebrovascular diseases: The official journal of National Stroke Association >Delayed Administration of the Glucagon-Like Peptide 1 Analog Liraglutide Promoting Angiogenesis after Focal Cerebral Ischemia in Mice
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Delayed Administration of the Glucagon-Like Peptide 1 Analog Liraglutide Promoting Angiogenesis after Focal Cerebral Ischemia in Mice

机译:延迟施用胰高血糖素样肽1促进小鼠局灶性脑缺血后促进血管生成的模拟羊毛蛋白质

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Background: Glucagon-like peptide 1 (GLP-1) analogs administered before or after cerebral ischemia have been shown to provide neuroprotection. Here, we explored whether delayed administration of a GLP-1 analog, liraglutide, could improve long-term functional recovery and promote angiogenesis after stroke. Materials and Methods: In the present study, mice were established as a focal cerebral cortical ischemia model and were intraperitoneally administered liraglutide or normal saline (NS) daily for 14 consecutive days, starting 1 day after cerebral ischemia. The neurological deficits were evaluated using rotarod test. The microvessel density (MVD) and endothelial cell (EC) proliferation were assessed by immunohistochemical staining. The expression of vascular endothelial growth factor (VEGF) was assessed by Western blot analysis. Results: Liraglutide significantly reduced infarct volume and improved the rotarod test scores, compared with mice treated with NS. Liraglutide also greatly increased the MVD and EC proliferation and simultaneously upregulated the expression of VEGF in the cerebral ischemic area. Conclusions: These results demonstrated that liraglutide promoted angiogenesis and long-term recovery of cerebral ischemia through increasing the expression of VEGF. (c) 2018 National Stroke Association. Published by Elsevier Inc. All rights reserved.
机译:背景:在脑缺血之前或之后施用的胰高血糖素样肽1(GLP-1)类似物提供神经保护剂。在这里,我们探讨了延迟给予GLP-1类似物的Liraglutide,可以改善长期功能恢复并促进中风后的血管生成。材料和方法:在本研究中,将小鼠作为局灶性脑皮质缺血模型建立,并且在脑缺血1天开始1天,每天连续14天每天腹膜内施用羊毛蛋白质或正常盐水(NS)。使用旋转杆测试评估神经缺陷。通过免疫组织化学染色评估微血管密度(MVD)和内皮细胞(EC)增殖。通过Western印迹分析评估血管内皮生长因子(VEGF)的表达。结果:与NS处理的小鼠相比,Liraglutide显着降低了梗塞体积并改善了滚子测试评分。 Liraglutide也大大增加了MVD和EC增殖,并同时上调了VEGF在脑缺血区域中的表达。结论:这些结果表明,通过增加VEGF的表达,Liraglutide促进了血管生成和脑缺血的长期回收。 (c)2018国家冲程协会。由elsevier Inc.保留所有权利发布。

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