...
首页> 外文期刊>Brain research >Achyranthes bidentata polypeptide k improves long-term neurological outcomes through reducing downstream microvascular thrombosis in experimental ischemic stroke
【24h】

Achyranthes bidentata polypeptide k improves long-term neurological outcomes through reducing downstream microvascular thrombosis in experimental ischemic stroke

机译:achyranthes bidentata多肽k通过降低实验缺血性卒中中的下游微血管血栓形成来提高长期神经系统结果

获取原文
获取原文并翻译 | 示例
           

摘要

Achyranthes bidentata Bl. (A. bidentata) occupies an important position in traditional Chinese medicine owing to the property of promoting the circulation of blood and removing stasis. Achyranthes bidentata polypeptide k (ABPPk) is one of the active components isolated from A. bidentata. We previously demonstrated that ABPPk has potent neuroprotective effects against neuronal apoptosis both in vitro and in vivo, but the roles and mechanisms of ABPPk on long-term functional recovery after ischemic stroke remain unknown. In the current study, we investigated the neuroprotective effects of ABPPk on filament transient middle cerebral artery occlusion (tMCAO) rats and found that ABPPk reduced the infarct volume and maintained the neuronal integrity in the ischemic penumbra. Moreover, we found that ABPPk might reduce the formation of downstream microthrombus through preventing ischemic-induced oxidative damage of brain endothelial cells and activation of tissue factor (TF), plasminogen activator inhibitor-1 (PAI-1), and NF-kappa B. ABPPk also inhibited polymorphonuclear leukocytes (PMNs) infiltration and matrix metalloproteinase-2/-9 (MMP-2/-9) activation in the ischemic penumbra. Morris water maze, foot fault test, and modified neurological severity score were assessed for a period of 6 weeks following tMCAO. ABPPk improved long-term recognition abilities and neurological outcomes after stroke compared with saline-treated rats. Taken together, these results suggested that ABPPk is beneficial to the improvement of long-term outcomes after transient cerebral ischemia injury and can be used as a potential neuroprotective agent.
机译:achyranthes bidentata bl。 (A. Bidentata)由于促进血液循环和去除瘀滞的财产而占据中医的重要地位。 achyranthes bidentata多肽k(abppk)是从A. bidentata分离的活性组分之一。我们之前证明ABPPK对体外和体内的神经元细胞凋亡有效的神经保护作用,但ABPPK在缺血性中风后的长期功能恢复的作用和机制仍然未知。在目前的研究中,我们研究了ABPPK对长丝瞬时中脑动脉闭塞(TMCAO)大鼠的神经保护作用,发现ABPPK降低了梗塞体积并保持了缺血半影中的神经元完整性。此外,我们发现ABPPK可以通过预防缺血性诱导的脑内皮细胞氧化损伤和组织因子(TF),纤溶酶原激活剂抑制剂-1(PAI-1)和NF-Kappa B的激活来减少下游微生物的形成。 ABPPK还抑制了缺血Penumbra的多核白细胞(PMNS)浸润(PMNS)浸润和基质金属蛋白酶-2 / -9(MMP-2 / -9)活化。在TMCAO后,评估莫里斯水迷宫,脚断层试验和改性神经系统严重程度评分。与盐水处理的大鼠相比,ABPPK改善了卒中后的长期识别能力和神经系统结果。总之,这些结果表明,ABPPK有利于在瞬时脑缺血损伤后改善长期结果,并可用作潜在的神经保护剂。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号