顺行穿刺注射牛磺胆酸钠制作大鼠重症胰腺炎模型

目的探讨制备大鼠重症胰腺炎模型方法的改进。方法将36只健康sD大鼠随机分为模型组（n=18）和假手术组（n=18），在胰胆管的近端（肝总管）用细针顺行穿刺胰胆管，注入4％牛磺胆酸钠，诱导重症急性胰腺炎动物模型，创面封闭胶封闭穿刺孔；两组均在模型诱导3、6、12h后检测腹水量及血淀粉酶，观察胰腺组织形态变化，光镜下行胰腺病变程度评分。结果模型组在模型诱导后腹水量（8．52±1．05）ml、血淀粉酶（5247．17±547．07）u／L、胰腺组织学评分（13．60±3．92）较假手术组腹水量（1．21±0．32）ml、血淀粉酶（1289．5±176．67）u／L、胰腺组织学评分（0．83±0．58）在各时间点均明显升高（P〈0．05）。结论此法损伤小，实验器材易于获取，操作简单，不会损伤胰腺和发生胆漏，可重复性好，模型稳定，成功率高，是较理想的重症胰腺炎模型制备方法。

Severe acute pancreatitis model by antegrade puncture injection of the sodium taurocholate in rat

Objective To improve the establishment of severe acute pancreatitis model in rat. Methods 36 Sprague-Dawley rats were randomly divided into experiment or shame operation group(n=18,each). Severe acute pancreatitis was induced by injection of 4% sodium taurocholate through puncturing common bile duct with a fine needle, puncture hole was closed by medical sealant glue. Ascites volume and blood amylase were measured at 3, 6 and 12 hours after injection. Gross and histological changes of pancreas were evaluated by a scoring system. Results Pancreatic changes in the experiment group was hemorrhagic and necrosis.The ascites volume(8.52±1.05)ml,serum amylase activity(5247.17±547.07)u/L, gross and histological scores(13.6±3.92) in experiment group was significantly higher than ascites volume(1.21±0.32)ml,serum amylase activity(1289.5±176.67)u/L, gross and histological scores((0.83±0.58) in shame operation group at every time point(P<0.05). Conclusions Combined injection through common bile duct and medical sealant glue in the experiment can minimize the trauma and simplize the procedure. This method produces a reliable model with high success rate and it is an ideal severe acute pancreatitis animal model.