趋化因子Fractalkine在大鼠重症急性胰腺炎中的作用及乌司他丁的干预效应

目的: 探讨趋化因子fractalkine(FKN)在重症急性胰腺炎(SAP)发病过程中的作用及乌司他丁(UT)的干预效应。方法: SD大鼠72只随机分为SAP组、乌司他丁治疗(SAP+UT)组和对照组(control),用4%牛磺胆酸钠逆行胆胰管注射建立大鼠模型,SAP+UT组在建立模型后立即注射UT进行干预治疗,用ELISA法测定3组大鼠不同时点血清中FKN水平的变化;实时荧光定量PCR检测胰腺和肺组织不同时点FKN mRNA的表达水平;病理组织切片检查各时点胰腺和肺组织的病理变化。结果: SAP组血清中FKN水平随时间的延长逐渐增强,3 h后各时点血清FKN水平高于对照组(P<0.05),SAP+UT组与对照组相比,各时点均无差异,6 h后SAP组与SAP+UT组血清FKN水平差异显著(P<0.05);SAP组术后胰腺组织FKN mRNA的表达随时间延长逐渐增加,术后1 h与对照组无明显差异(P>0.05),3h表达高于对照组(P<0.05),6 h和12 h表达显著高于对照组(P<0.01);SAP组术后肺组织FKN mRNA的表达随时间变化逐渐升高,术后1 h与对照组相比无显著差异,3 h、6 h和12 h表达显著高于对照组(P<0.01);病理组织切片检查显示SAP+UT组各时点与SAP组相比较,胰腺病理损伤显著减轻。结论: FKN可能在SAP发病过程及与SAP相关的急性肺损伤中发挥重要作用;UT能有效干预SAP及SAP相关的急性肺损伤,其机制可能与抑制趋化因子FKN的表达有关。

Effects of ulinastatin intervention on chemokine fractalkine expression in rat severe acute pancreatitis

AIM: To investigate the role of chemokine fractalkine(FKN) in the pathogenesis of severe acute pancreatitis(SAP) and effects of ulinastatin intervention on FKN expression in SAP.METHODS: Seventy-two SD rats were randomly divided into SAP group,ulinastatin treatment group(SAP+UT) and control group.SAP model was induced by retrograde infusion of 4% sodium taurocholate into the bili-pancreatic duct in the rats.The rats in SAP+UT group were injected with ulinastatin immediately after the SAP model was set up.FK...