【摘要】 目的:研究毒热平注射液对流感病毒感染的小鼠腹腔巨噬细胞株Ana-1细胞分泌NO的影响。方法:用100TCID50流感病毒亚甲型鼠肺适应株A/FM/1/47(H1N1)感染小鼠腹腔巨噬细胞株Ana-1后换用6个不同浓度的含药维持液继续培养,分别于6、12、24和36小时收集细胞上清液,用Griess试剂法检测其释放NO的水平。同时提取1μg/ml药物组作用24小时后的细胞mRNA和核蛋白,利用RealTimePCR法和Westernblot技术,检测毒热平注射液对病毒感染前后巨噬细胞NF-κBp65mRNA及其蛋白表达水平的影响。结果:在药物作用的不同时间,60、30和10μg/ml各剂量组均能显著下调病毒感染巨噬细胞NO的分泌水平,且具有剂量依赖性;该药可明显下调病毒感染巨噬细胞NF-κBp65mRNA及其蛋白表达水平。结论:毒热平可通过下调细胞核因子-κB活性,抑制病毒感染巨噬细胞NO的分泌,发挥抗病毒感染作用。更多还原

【Abstract】 Objective:To survey the effect of the Dureping Injection on the kinetic change of nitrous oxide(NO) in macrophage infected by the influenza virus FM1 strain.Methods:The murinal celiac macrophage(Ana-1) was infected by the virus,add the different concentration of the drug in the supernatant of the macrophage for 6 h,12 h,24 h and 36 h.The level of the NO in the supernatant was measured by the method of traditional Griess.Ana-1 cell line was infected by influenza virus FM1 strain,then treated with Dureping Injection 1 μg/ml for 24 h.The cells were then collected,mRNA was extracted and the expression of NF-κB p65 was measured by RT-PCR;The nuclear protein was extracted and the expression of NF-κB p65 measured by Western blot.Results:60 μg/ml,30 μg/ml,10 μg/ml and 1 μg/ml group of Dureping Injection down-regulated amount of NO secreted by the Ana-1 cells infected by virus,and it was showed in dose relationship significantly;1 μg/ml group of Dureping Injection down-regulated the expression of the NF-κB p65 mRNA and protein.Conclusion:Dureping Injection has an obvious effect against influenza virus FM1 strain by depressing the activity of NF-κB,which prevents the production of NO secreted by Ana-1 cells infected by the virus.更多还原