用PSD-95抑制剂治疗脑卒中 在旋脑类灵长类动物大脑中的治疗
Douglas J Cook1, Lucy Teves, Michael Tymianski
1Toronto Western Hospital Research Institute, Toronto, Ontario, M5T 2S8, Canada.
Nature
|March 6, 2012
概括
对中风的药理神经保护在更高阶的大脑中是可以实现的. 在中风后服用PSD-95抑制剂可以预防非人类灵长类动物的损伤和改善功能,提供了一个有前途的新中风治疗策略.
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.
- 脑卒中研究 脑卒中研究
背景情况:
- 在全球范围内,中风是导致死亡和残疾的主要原因,药物治疗的有效性有限.
- 超过1000种实验性中风治疗方法未能从临床前模型转化为人类使用.
- 一种普遍的信念表明,药物神经保护在高阶大脑中是不可行的.
研究的目的:
- 为了测试PSD-95抑制剂在旋脑非人类灵长类动物中风模型中神经保护的疗效.
- 通过药理干预提供一种可行的策略,以推进中风治疗.
- 研究组织神经保护与功能神经学结果之间的相关性.
主要方法:
- 利用了高阶旋脑非人类灵长类动物,因为它们与人类的相似之处.
- 服用PSD-95抑制剂,这些抑制剂将后突触密度蛋白PSD-95与神经毒性通路脱离.
- 通过磁共振成像 (MRI) 和组织学评估中风损伤,并通过神经行为分析评估神经功能.
主要成果:
- 在非人类灵长类动物中,在中风发作后接受PSD-95抑制剂治疗后,预防了中风损伤.
- 治疗显著减少了心脏病发作量,并保留了缺血性脑组织中的基因转录能力.
- 在MRI评估的组织神经保护和神经功能保存之间观察到强烈的相关性.
结论:
- 在使用PSD-95抑制剂的旋脑非人类灵长类动物中,可以实现组织神经保护和中风后改善功能结果.
- 这项研究确定了药理神经保护在高阶大脑中的可行性.
- 这些发现支持将PSD-95抑制剂转化为人类中风治疗临床试验.
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