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JoVE Encyclopedia of Experiments
Neuroscience
在小鼠模型中产生闭头轻度创伤性脑损伤
在小鼠模型中产生闭头轻度创伤性脑损伤
Encyclopedia of Experiments
Neuroscience
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Encyclopedia of Experiments Neuroscience
Generating a Closed-Head Mild Traumatic Brain Injury in a Murine Model

在小鼠模型中产生闭头轻度创伤性脑损伤

Protocol
331 Views
03:01 min
July 8, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

从

减震管设置开始,包括带有压力传感器的驱动器和从动部分、缓冲管护罩和连接的气瓶。

在

驱动器和从动部分之间放置聚酯膜并固定。

将完全麻醉的小鼠放入管道护罩内。这可以保护外周器官,同时仅暴露头部,支撑在纱布垫上。

将

鼠标的头部与管道边缘附近的枕髁对齐,以防止脑干受伤。

从传感器开始压力监测。

打开燃气阀以产生压力峰值。

气体超压在驱动部分产生,导致膜破裂并通过驱动部分释放冲击波。

波离开管子并撞击鼠标的头部,导致大脑在颅骨内快速移动。

这种与周围骨骼的碰撞会损害某些大脑部位,诱发闭头轻度创伤性脑损伤。

准备好实验所需的所有材料后,根据研究目的调整参数,检查设置是否正确安装。小心地切割聚酯膜,并将其插入从动部分和驱动器部分之间。

拧紧连接螺栓将其固定。在冲击管出口处以 120 度角放置三个压力传感器,以监测 TBI 诱导期间的冲击波特性。

使用千分尺,确保每个受试者与冲击管装置末端的距离是正确的。在研究中保持啮齿动物的头部位置恒定,以便进行一致的伤害评估。

使用软件的图形用户界面,从压力传感器启动记录。将完全麻醉的啮齿动物放入带缓冲的 PVC 管防护罩中,以保护外周器官免受冲击波的伤害。

将其头部放在头部放置区域内,并用纱布垫从下方支撑。根据每只啮齿动物的解剖结构确定头部对齐,枕骨髁与保护罩的边缘对齐。

打开压缩气罐的主阀,产生压力尖峰,使膜破裂,并发出响亮的爆炸声,确认压力波的产生。实验后移除时,膜将在视觉上破裂。

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