双金属网络纳米颗粒通过缓解神经炎症和促进血管正常化来缓解缺血性中风
Siyu Chen1, Lanping Zhang2, Ying Yue1
1The Seventh Affiliated Hospital of Xinjiang Medical University, Xinjiang, China.
Colloids and surfaces. B, Biointerfaces
|August 27, 2025
概括
通过穿越血脑屏障,减少炎症并保护脑细胞, 有效治疗缺血性中风.
科学领域:
- 生物医学工程
- 纳米技术
- 神经科学
背景情况:
- 由于复杂的病理生理学和血脑屏障 (BBB) 限制药物输送,缺血性中风 (IS) 具有重大治疗挑战.
- 目前的IS治疗方法在实现最佳患者结果方面存在局限性.
- 鲁丁水合物 (Rh) 具有抗炎,抗氧化和血管增强的特性,但具有较差的溶解性和BBB透性.
研究的目的:
- 开发一种多功能双金属网络纳米粒子 (Sr 2/Mn 2@Rh),用于增强缺血性中风治疗.
- 为了克服路丁水合物的溶解性和BBB透性的局限性.
- 为了利用金属离子 (Mn 2+,Sr 2+) 和鲁丁水合物的协同疗效.
主要方法:
- 通过金属协调驱动自组装制造Sr 2/Mn 2@Rh纳米粒子.
- 纳米粒子特性包括分散性,酸触发释放和pH调节的评估.
- 使用神经细胞和氧气-葡萄糖剥夺/再输血 (OGD/R) 模型的体外研究.
- 使用过渡性中脑动脉阻塞 (tMCAO) 的老鼠模型进行体内研究.
主要成果:
- Sr 2/Mn 2@Rh纳米颗粒显示出出色的分散性和受控释放性.
- 纳米颗粒有效地穿过BBB并被神经细胞内化.
- 在实验室中,Sr 2/ Mn 2@ Rh 清除了反应性氧物种 (ROS),保护了神经元,调节了微质,增强了血管生成.
- 在体内,Sr 2/ Mn 2@ Rh治疗显著逆转了脑损伤,减少了神经元亡,减弱了炎症,并减少了tMCAO大鼠的自.
结论:
- Sr 2/Mn 2@Rh纳米颗粒是一种有前途,安全和有效的治疗方法.
- 开发的纳米粒子克服了BBB透和协同治疗作用的鲁丁水合物的局限性.
- 这种方法为治疗缺血性中风等脑血管疾病提供了新的途径.
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