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JoVE Encyclopedia of Experiments
Biology
急性胆道胰腺炎模型:一种通过胰管输注生成急性胆道胰腺炎小鼠模型的方法
急性胆道胰腺炎模型:一种通过胰管输注生成急性胆道胰腺炎小鼠模型的方法
Encyclopedia of Experiments
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Encyclopedia of Experiments Biology
Acute Biliary Pancreatitis Model: A Method to Generate Acute Biliary Pancreatitis Mouse Model via Pancreatic Duct Infusion

急性胆道胰腺炎模型:一种通过胰管输注生成急性胆道胰腺炎小鼠模型的方法

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July 8, 2025
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胰管运输消化酶并与肠道附近的胆总管连接。这些导管形成一个通道,胆汁盐在进入肠道之前激活消化酶。

当胆结石阻塞该通道时,胆汁会倒流,激活胰腺本身的消化酶,导致急性胆汁性胰腺炎--一种严重的炎症性疾病。要在小鼠模型中模拟这种情况,请在仰卧位准备麻醉小鼠。

切

开上腹部,胸部下方。然后,用胰腺拉动小肠的上部并固定其侧端以进入壶腹周围区域 - 一个复杂的解剖结构,包括胰管开口。

固定胆总管的近端和远端,以防止任何泄漏到其他器官。接下来,将装满牛磺胆酸钠溶液的注射器连接到输液泵。牛磺胆酸钠是一种胆汁盐,可激活酶以消化脂肪。

现在,将针头插入壶腹周围区域,并开始以最佳速度和浓度灌注所需的持续时间。灌注后,取出针头和缝线。将肠道放回腹膜。

缝合切口。让鼠标恢复。最终,牛磺胆酸钠进入胰腺并激活消化酶,导致胰腺损伤。

用

脚趾捏住检查麻醉深度后,用5%聚维酮碘溶液清洁麻醉小鼠的腹部区域。使用修剪器去除胸部和下腹部之间的毛发,并用 70% 的酒精清洁约 2 平方厘米的手术区域。将动物固定在手术板上,用剪刀在腹部上部水平切割 5 毫米的皮肤,剑突下方 1 厘米。在腹膜上重复切割。

要在腔内暴露最少的情况下进行剖腹手术,请使用拖拉机将肝脏拉向距肠道约 1 厘米的头部,并找到胰腺和十二指肠区域。使用镊子将肝脏抬向动物头部。通过轻轻拉动小肠部分,用 6-0 聚丙烯缝合线固定两个侧端,以便更好地观察胆总管的远端部分。

使用微血管夹暂时闭塞近端胆总管。将器官暴露在腹腔外。然后,用 8-0 暂时闭塞远端胆总管缝合。要进入胆总管,请用一根 0.4 毫米的针头连接到一根 0.54 毫米的聚乙烯管,刺穿壶腹周围区域,该区域表现为小肠壁的白色部分。以每10克体重10微升的恒定速度启动输液泵,输注2.5%牛磺胆酸钠溶液,持续3分钟。

输液后,取下微血管夹,临时8-0缝合线,以及来自胰胆管的注射针。用 6-0 非吸收性单丝聚丙烯缝合线缝合腹部。剖腹手术和末端缝合之间的时间不应超过 30 分钟。手术后,将动物安置在聚乙烯盒子中,盒子内衬木屑、水和随意食物。

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