摘要目的 观察高原低氧环境下急性坏死性胰腺炎(ANP)大鼠胰腺及肝功能损害程度,为临床更好地诊治高原地区重症急性胰腺炎(SAP)患者提供参考.方法 96只SPF级雄性Wistar大鼠分别在海拔1 500、3 300、4300 m高度进行实验.采用胰腺被膜下注射牛磺胆酸钠的方法制备ANP模型,以仅翻动胰腺数次后关腹的大鼠作为假手术组.假手术组在术后6h处死,ANP组在造模后6、12、24 h分批处死.取血检测血清淀粉酶活性,取胰腺及肝脏常规行组织病理学检查,并进行病理评分.结果 假手术组大鼠的血清淀粉酶活性无明显变化,胰腺及肝脏无明显组织病理改变.同一海拔高度,ANP组各时间点大鼠的血清淀粉酶活性、胰腺及肝脏病理评分均显著高于假手术组,ANP 12、24 h组大鼠的血清淀粉酶活性、胰腺及肝脏病理评分均显著高于ANP 6 h组,差异均有统计学意义(P值均＜0.05).海拔3 300、4300 m高度的ANP各时间点组大鼠的胰腺及肝脏病理评分均显著高于海拔1500m高度的同时间点组大鼠,差异均有统计学意义(P值均＜0.05),但血清淀粉酶活性的差异无统计学意义.结论 随着海拔高度的增加,ANP大鼠的胰腺及肝脏的病理损害呈持续性加重.

abstractsObjective To investigate the extent of pancreatic and liver function damage of acute necrotizing pancreatitis (ANP) rats under altitude hypoxia environment,and to provide a reference for better diagnosis and treatment of severe acute pancreatitis (SAP) in the plateau region.Methods Ninety-six specific pathogen free (SPF) Wistar male rats were involved in 1 500 meters,3 300 meters and 4 300 meters altitude.The model of ANP was established by using pancreatic capsule injection of sodium taurocholate (NaTc).In the sham operation group,the rats' belly was opened and closed after only flipping its pancreas several times.Rats in sham group were sacrificed at 6 h,and ANP group were sacrificed at 6,12,24 h after modeling.Serum amylase activity was measured,and pancreas and liver tissue were harvested for pathological examination and score.Results Serum amylase activity in sham operation group rats was not remarkably changed,and pathological changes of pancreas and liver were not obvious.At same altitude,serum amylase activity,pancreas and liver pathology score of ANP rats at each time point were significantly higher than those in the sham operation group;and serum amylase activity,pancreas and liver pathology scores of ANP 12,24 h group rats were significantly higher than those of ANP 6h group;and the difference was statistically significant (P ＜ 0.05).At 3 300 meters,4 300 meters altitude,the pancreas and liver pathology scores of ANP rats at each time point were significantly higher than those at 1 500 meters altitude,and the differences were statistically significant (P ＜ 0.05),but the difference in serum amylase activity was not statistically significant.Conclusions With the increase of altitude,pancreatic and liver pathological damage of ANP rats shows continuing aggravation.