摘要
目的探讨花姜酮对重症急性胰腺炎大鼠胰腺损伤可能的保护作用,为重症急性胰腺炎防治提供理论依据。方法 70只Wistar大鼠,雄性,按照随机数字表法随机分为4组,即正常对照组(NC组,n=10)、重症急性胰腺炎组(SAP组,n=40)、花姜酮预处理组(ZER组,n=10)及花姜酮药物对照组(ZER-CON组,n=10),SAP组又分为建模后1、3、6及12 h 4个时间点组(n=10)。SAP组及ZER组大鼠采用胆胰管逆行注射5%硫磺胆酸钠溶液(0.1 m L/100 g)制备SAP模型,NC组及ZER-CON组则向胆胰管注入等量生理盐水。ZER组及ZER-CON组于模型制备前30 min由股静脉穿刺给予10 mg/kg的花姜酮溶液。NC组、ZER组及ZER-CON组于建模后12 h处死大鼠,SAP组分别于建模后1、3、6及12 h处死大鼠。分别观察各组大鼠的死亡情况,测定其腹水量、血清淀粉酶(AMY)和磷脂酶A2水平;光镜下观察胰腺组织的病理学改变;采用免疫组化法检测各组大鼠胰腺组织中核因子-κB(Nuclear Factor-kappa B,NF-κB)p65的表达。结果 ZER-CON组大鼠的死亡情况、腹水量、AMY及磷脂酶A2水平和胰腺组织的病理学评分以及NF-κB p65蛋白表达与NC组相近,其差异均无统计学意义(P>0.05);SAP组上述指标均明显高于NC组(P<0.05)。ZER组组大鼠的上述指标与SAP组相比明显降低(P<0.05),但均高于NC组(P<0.05)。结论应用花姜酮可以减少SAP大鼠的死亡,减少腹水量,减轻胰酶及胰腺病理学损伤,同时可降低胰腺NF-κB p65蛋白的表达。提示花姜酮可能通过核因子NF-κB途径对SAP大鼠胰腺起保护作用。
Objective To investigate the possible protective effect of zerumbone on pancreatic injury in severe acute pancreatitis(SAP) rats,and to provide a theoretical basis for prevention and treatmen of severe acute pancreatitis.Methods Seventy male Wistar rats were randomly divided into four groups:normal control group(NC group,n=10),SAP group(n=40),Zerumbone pretreatment group(ZER group,n=10),and Zerumbone drug control group(ZERCON group,n=10).Rats of SAP group were divided into four time points of 1 h,3 h,6 h,and 12 h(n=10 each time point).SAP models were induced by retrograde injection of 5%sodium taurocholate(0.1 mL/100 g) in biliopancreatic duct in SAP group and ZER group.Rats were injected isotonic saline solution instead of taurocholate as a control in NC group and ZER-CON group.Zerumbone solution(10 mg/kg) was administered via femoral vein half an hour prior to establishing models in ZER group and ZER-CON group.All rats except SAP group were sacrificed at 12 h time point after the induction of SAP.The rats in SAP group were sacrificed at 1 h,1 h,3 h,6 h and 12 h time point after induction of SAP.The mortality,ascites,serum amylase(AMY),phospholipase,and pathological examination of pancreas were observated or detected.The expression of nuclear factor-kappa B(NF-κB) p65 in pancreatic tissues was evaluated by immunohistochemistry assay.Results There were no difference of the levels of mortality,ascites,serum AMY,phospholipase,pathological examination,and NF-κB p65 location expression of pancreas between the ZER-CON group and NC group(P>0.05).The above indexes in SAP group were significantly higher than those in NC group(P<0.05).However,those in ZER group were significantly lower than in SAP group(P<0.05),and higher than in NC group(P<0.05).Conclusions Zerumbone can reduce the mortality and ascites,effectively alleviate the enzyme,pathological injury,and NF-κB p65 location expression in pancreatic tissue following SAP.It may indicate that zerumbone can protect pancreatic injury in SAP via NF-κB pathway.
引文
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