超素通过调节内质网膜应激应变来缓解大脑缺血/再损伤
1Department of Neurology, Shanxi Provincial People's Hospital, Taiyuan, Shanxi, China.
Frontiers in pharmacology
|January 23, 2026
概括
高素保护大脑免受缺血/再输液 (I/R) 损伤,通过减少细胞死亡和内质网膜 (ER) 压力. 这种天然化合物显示出作为治疗缺血性中风的前景.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
- 生物化学 生物化学
背景情况:
- 大脑缺血/反 (I/R) 损伤是神经缺陷的主要原因.
- I/R损伤涉及氧化应激,过载,炎症和内质网膜 (ER) 应激.
- 超素,来自Hypericum perforatum,具有抗氧化和抗丧性质.
研究的目的:
- 在实验性大脑I / R损伤中研究超素的神经保护作用.
- 阐明高素作用的基本机制,特别是关于ER压力和亡.
- 为了评估hypericin作为治疗缺血性中风的治疗剂的潜力.
主要方法:
- 雄性Sprague-Dawley大鼠经历了中脑动脉阻塞 (MCAO),并接受过氨酸或尼莫迪平治疗.
- 神经功能,心脏病发作量和脑 edem 被评估后再输血.
- 在体外研究中使用了经过氧气-葡萄糖剥夺/再氧化 (OGD/R) 治疗的小鼠HT22细胞.
- 细胞活力,细胞亡和ER压力标志物被分析使用MTT测定,流细胞计,qRT-PCR和西部斑点.
- 在的药理动力学分析预测了血脑屏障的透性.
主要成果:
- 在大鼠中,高素显著降低了脑梗塞的体积 (~40%) 和脑.
- 在接受过素治疗的动物中观察到神经和运动功能得到改善.
- 在体外,高素增强了HT22细胞活力,并降低了细胞亡 (从30.3%降至10.3%).
- 过素抑制了ER压力标志物 (CHOP,GRP78,caspase-12) 并使OGD/R受损细胞中的Bax/Bcl-2比率正常化.
- 药理动力学分析表明,高素有潜力透血脑屏障.
结论:
- 超素显示出对大脑I/R损伤的显著神经保护作用.
- 保护作用通过减弱ER压力诱导的亡和保持神经元完整性的介导.
- 超素是治疗缺血性中风的有希望的候选药物.
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