落新妇甙对热缺血再灌注损伤肝脏肿瘤坏死因子α与白细胞介素-10表达的影响

目的 观察落新妇甙对热缺血再灌注(I/R)损伤肝脏Th1、Th2型细胞因子表达的影响. 方法 C57BL/6小鼠随机分为4组:假手术组、模型组,落新妇甙小剂量(10 mg/kg)干预组和大剂量(40mg,/kg)干预组.干预组小鼠于缺血前24h和1 h分别给予10mg/kg或40mg/kg的落新妇甙腹腔注射,建立70%部分肝I/R模型.收集肝组织标本,Western blot检测肝组织中肿瘤坏死因子(TNF)α,白细胞介素(IL)-10蛋白含量,RT-PCR检测肝组织TNF α、IL-10 mRNA的水平.多组间比较采用单因素方差分析,两两比较采用SNK法.结果 与I/R模型对照组比较,小、大剂量落新妇甙干预组肝组织中TNF α蛋白表达水平依次降低,与TNF α mRNA的半定量RT-PCR结果 相符(相对表达量分别为1.74±O.12与1.56±0.09、0.82±0.12,P值均<0.05);而IL-10蛋白表达水平依次升高,与IL-10 mRNA的半定量RT-PCR结果 相符(相对表达量分别为0.96±0.08与1.11±0.17、1.47±0.08,P值均<0.05).结论 落新妇甙干预能抑制I/R损伤肝组织中Th1型细胞因子TNFα的高表达,同时促进Th2型细胞因子IL-10的表达.

Effects of astilbin on the expression of TNF a and IL-10 in liver warm ischemia-reperfusion injury

Objective To investigate the effects of astilbin on the expressions of TNF α and IL-10 during liver warm ischemia-reperfusion injury. Methods C57BL/ 6 mice were randomly divided into 4 groups (n = 8): sham-operated group (Sham), model control group(I/R), low dosage of astilbin treatment group (10 mg/kg) and high dosage of astilbin (40 mg/kg) treatment group. The treatment group mice were intraperitoneally injected with 10 or 40 mg/kg astilbin 24 hours and one hour before Ischemia, the hepatic ischemia-reperfusion model were thus established. After jn90 of min ischemia and 6 h reperfusion of the partial hepatic lobe, the expressions of TNF α and IL-10 in liver tissues collected from the experimental groups were detected by Western blot and semiquantitative RT-PCR. Results The expression of TNF a protein in liver tissues gradually decreased in treatment groups (low and high dosages of astilbin treatment groups) as compared to the I/R model control group. Similar results were observed in the mRNA expressions of these genes as determined by semiquantitative RT-PCR (P < 0.05 for low dosage group; P < 0.01 for high dosage group). Compared with the I/R model control group, the expression of IL-10 was increased in both treatment groups (low dosage group P < 0.05; large dosage group P < 0.01). Conclusion Treatment with astilbin decreases TNF α expression but induces IL-10 expression in liver during warm ischemia-reperfusion injury.