Decerebrate mouse model for studies of the spinal cord circuits.

Decerebrate mouse model for studies of the spinal cord circuits.
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DOI:
10.1038/nprot.2017.001
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发表时间:
2017-04
期刊:
影响因子:
14.8
通讯作者:
Whelan PJ
Whelan PJ
中科院分区:
生物学1区
文献类型:
--
作者:
Meehan CF;Mayr KA;Manuel M;Nakanishi ST;Whelan PJ

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成年去大脑小鼠模型(大脑被移除的小鼠)能够研究脊髓的感觉-运动整合和运动输出数小时,而不会因麻醉而影响这些功能。例如,去大脑小鼠是使用细胞内记录方法检查运动行为的理想选择,而使用目前的麻醉制剂是不可能的。该方案描述了在小鼠中实现低失血去脑所需的步骤和记录脊髓神经元信号的方法,重点是运动神经元。该协议还描述了该协议的一个示例应用:自发和主动驱动步进的唤起,包括去大脑小鼠中这些行为的优化。准备动物和进行去脑所需的时间约为2小时,小鼠可存活长达3-8小时,这是进行大多数短期手术的充足时间。这些协议可以修改为那些感兴趣的心血管或呼吸功能,除了运动功能,可以由学员进行一些以前的经验,在动物外科。
The adult decerebrate mouse model (a mouse with the cerebrum removed) enables the study of sensory-motor integration and motor output from the spinal cord for several hours without compromising these functions with anesthesia. For example, the decerebrate mouse is ideal for examining locomotor behavior using intracellular recording approaches, which would not be possible using current anesthetized preparations. This protocol describes the steps required to achieve a low-blood-loss decerebration in the mouse and approaches for recording signals from spinal cord neurons with a focus on motoneurons. The protocol also describes an example application for the protocol: the evocation of spontaneous and actively driven stepping, including optimization of these behaviors in decerebrate mice. The time taken to prepare the animal and perform a decerebration takes ~2 h, and the mice are viable for up to 3–8 h, which is ample time to perform most short-term procedures. These protocols can be modified for those interested in cardiovascular or respiratory function in addition to motor function and can be performed by trainees with some previous experience in animal surgery.
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