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JoVE Encyclopedia of Experiments
Neuroscience
使用近红外光调节小鼠模型中的感觉神经元信号传导
使用近红外光调节小鼠模型中的感觉神经元信号传导
Encyclopedia of Experiments
Neuroscience
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Encyclopedia of Experiments Neuroscience
Modulating Sensory Neuronal Signaling in a Mouse Model Using Near Infrared Light

使用近红外光调节小鼠模型中的感觉神经元信号传导

Protocol
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02:29 min
August 19, 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

拿一只鼠标剃掉背头和颈部区域。

将

鼠标放在手掌上,轻轻握住尾巴。

将

近红外或近红外发射设备放置在剃光区域上方并将其打开。

近红外光穿透头皮和颅骨,到达内耳的前庭感觉上皮。

该组织含有将机械刺激转化为电信号的感觉毛细胞。

这些信号激活前庭神经元,将这些信息传递到大脑。

在

毛细胞内部,线粒体吸收近红外光,增强细胞能量产生。

这也会产生活性氧 (ROS) 作为代谢副产物。

过量的 ROS 会破坏从毛细胞到大脑的信号传输。

作为响应,细胞增加抗氧化酶的产生。

这些酶可以中和 ROS 并在刺激期间恢复向大脑的信号传输。

这凸显了近红外疗法作为支持神经元功能的潜在神经保护策略。

在

开始实验前两到三天,尽可能紧密地剃掉每只小鼠头部和颈部区域的皮毛,以防止动物的毛发在治疗方案完成之前重新生长。为了保持动物的无病原体状态,在每次剃须之间用70%乙醇清洁器械。

然后,在每个动物实习生的治疗当天,在尾巴的近端拿起小鼠,让它在一只手掌中放松,以尽量减少对近红外治疗动物的压力。对于每只动物,握住一个 670 纳米的 LED 设备,距离剃光区域一到两厘米,然后打开设备 90 秒。对于假手术组,以相同的方式重复治疗程序,但关闭近红外阻挡组的设备,以与近红外治疗组相同的方式治疗动物,但用铝箔覆盖设备。

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