甘露醇治疗大鼠急性出血坏死性胰腺炎的实验观察

EXPERIMENTAL STUDY ON THE TREATMENT OF RAT ACUTE HEMORRHAGIC NECROTIZING PANCREATITIS WITH MANNITAL

为观察自由基清除剂甘露醇对急性出血坏死性胰腺炎（ＡＨＮＰ）的治疗作用，在２８只Ｗｉｓｔａｒ大鼠胰管内逆行注入牛胆汁酸钠，造成ＡＨＮＰ模型后随机分成治疗组和对照组。治疗组大鼠以２０％甘露醇（１ｇ／ｋｇ）于尾静脉缓慢推注，１次／１２小时，直至实验结束。对照组以同样方法及间隔时间给予生理盐水（５．０ｍｌ／ｋｇ）。两组大鼠均于９６小时采心脏血后处死。结果：治疗组胰腺组织中过氧化脂质（ＬＰＯ）、血清中ＬＰＯ、乳酸脱氢酶（ＬＤＨ）、α１抗胰蛋白酶（α１ＡＴ）、谷草转氨酶（ＧＯＴ）和胰腺组织坏死面积均显著低于对照组（Ｐ＜０．０１或Ｐ＜０．０５）。光镜下治疗组胰腺、肝脏、心脏、肾脏的损害亦轻于对照组。治疗组大鼠死亡率显著低于对照组（Ｐ＜０．０５）。由此表明：甘露醇能够清除自由基。

This study aimed to assess the therapeutic effect of mannital administration on acute hemorrhagic necrotizing pancreatitis (AHNP), 28 Wistar rats were randomily divided into therapeutic group and control group after induction of AHNP by retrograde intraductal injection of 5 percent sodium taurocholate. The rats of therapeutic group received intravenous 20% mannital (1g/kg) through tail vein, once in 12 hours, until the end of experiment; control group received saline (5.0 ml/kg) with the same way. Blood of all the rats were collected from heart and the rats were killed after 96 hours. Results: lipid peroxide (LPO) in pancreatic tissue, LPO in serum, lactate dehydrogenase (LDH), alpha 1 antitrypsin (α 1 AT), glutamicoxalacetic transaminase (GOT), necrotizing square of pancreatic tissue in the therapeutic group were significantly less than those in control group ( P <0.05 or P <0.01). The damage to pancrease, heart, liver, kidney in the therapeutic group were lighter than those of the control group and the mortality was lower ( P <0.05).Conclusions: Mannital can scavenge the oxygen derived free radicals and play a therapeutic role in AHNP.