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JoVE Encyclopedia of Experiments
Neuroscience
生成脊髓损伤的小鼠模型
生成脊髓损伤的小鼠模型
Encyclopedia of Experiments
Neuroscience
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Encyclopedia of Experiments Neuroscience
Generating a Mouse Model with a Spinal Cord Injury

生成脊髓损伤的小鼠模型

Protocol
468 Views
03:23 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

从一只麻醉的小鼠开始,去除背侧的毛发。

涂抹药膏以防止角膜干燥。

依次使用甜菜碱对皮肤进行消毒,然后使用乙醇。

在切口部位注射局部麻醉。

通过识别最后一根浮动的肋骨来定位胸椎或 T13 椎骨。然后,识别椎骨 T8-T12 并做一个中线切口。

去除皮下脂肪组织以进入椎旁肌肉。

清除这些肌肉以暴露椎板。

解剖 T9-T10 椎骨的椎板以进入脊髓。

完全横切脊髓以诱发脊髓损伤或脊髓损伤。

在手术部位放置一块皮下脂肪以保护脊髓。

缝合肌肉和结缔组织,然后闭合皮肤切口。

SCI 小鼠模型现已准备好进行进一步研究。

麻醉

动物并将眼药膏涂抹在角膜上,以保护眼睛在手术过程中免受干燥。然后用甜菜碱磨砂膏和 70% 乙醇擦洗动物皮肤 3 次。

切口前,使用带有 25 号针头的注射器在切口部位周围注射 100 微升 0.125% 布比卡因作为镇痛。从与 T13 相对应的浮动肋骨倒数以识别 T8 到 T12。在 T8 至 T12 椎骨水平沿背部中线切开 1 至 1.5 厘米的切口后,清除皮下脂肪组织以进入椎旁肌。然后慢慢解剖它们,露出两侧的棘突和椎板。

非常小心地进行此过程非常重要,以避免过度出血和脊髓损伤。

使用

显微解剖镊子轻轻剥离椎板,对 T9 至 T10 椎骨进行椎板切除术,以暴露脊髓。使用镊子固定并提升 T8 处的脊柱,以夸大脊柱弯曲度。然后用细剪刀将T9椎骨和T10椎骨之间的脊髓切开,一直到椎管底部,以确保完全横切。

在

手术显微镜下观察完整的横切后,在椎板切除部位涂抹一块皮下脂肪,以便在手术部位闭合之前为脊髓提供额外的保护。最后,闭合伤口并缝合椎旁肌和浅筋膜。然后使用缝合夹闭合皮肤。

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