清热解毒软胶囊体内抗甲型H1N1流感病毒的作用研究

摘要

目的：观察清热解毒软胶囊（ADSC）体内抗甲型H1N1流感病毒作用，为其用于临床治疗甲型H1N1流感病毒感染提供实验依据。方法：将BALB/c小鼠随机分为正常对照组，模型对照组，阳性药物高、中、低剂量组[磷酸奥司他韦胶囊，0.04、0.02、0.01 g/（kg·d）]和ADSC高、中、低剂量组[1.5、0.75、0.375 g/（kg·d）]。除正常对照组外，其余各组小鼠均经鼻腔滴入滴度为1.6×10－5.2的甲型H1N1流感病毒悬液复制染毒小鼠模型，造模6～8 h后ig相应药物，每天1次，连续5 d。给药结束后，观察7 d内小鼠体质量变化，计算15 d内小鼠的死亡率、死亡保护率及平均存活天数。另取小鼠，分组、给药同上，末次给药8 h后，测定小鼠肺指数和肺指数抑制率。结果：模型组小鼠体质量从第5天开始明显下降，第8天开始出现死亡（15 d内死亡率为85.7％），肺指数较正常对照组明显升高（P＜0.01）。ADSC和磷酸奥司他韦胶囊均可减缓染毒小鼠体质量下降趋势，降低小鼠死亡率和肺指数，延长小鼠的平均存活天数。其中ADSC高剂量组和阳性药物高、中剂量组小鼠的平均存活天数显著高于模型对照组（P＜0.05）；除ADSC低剂量组外，其余各给药组小鼠的肺指数均显著低于模型对照组（P＜0.05）。结论：ADSC对小鼠具有一定的体内抗甲型H1N1流感病毒的作用。%OBJECTIVE:To observe the antiviral effects of Qingre jiedu soft capsule(ADSC)against influenza A H1N1 virus in vivo,and to provide a experimental support for clinical therapy of influenza A H1N1 virus. METHODS:BALB/c mice were ran-domly divided into normal control group,model control group,positive drug high-dose,medium-dose and low-dose groups [oselta-mivir phosphate capsule,0.04,0.02,0.01 g/(kg·d)] and ADSC high-dose,medium-dose and low-dose groups [1.5,0.75,0.375 g/(kg·d)].Except for normal control group,others groups were given influenza A H1N1 virus with titer 1.6×10-5.2 via nasal cavity to induce poisoned mice model;6-8 h after modeling,they were given relevant medicine intragastrically,once a day,for 5 days. After medication,the change of body weight within 7 d were observed in mice;the mortality and death prevention rate within 15 d,mean survival days(MSDs)were calculated in mice.Other mice were selected and grouped,and they were given same drugs as above. 8 h after last medication,lung index and inhibition rate of lung index were determined in mice.RESULTS:In model control group,the body weight of mice decreased significantly since 5th day,and mice death was beginning to occur since 8th day(mortal-ity of 85.7% within 15 d);the lung index was increased significantly compared to normal control group (P<0.01). Both ADSC and oseltamivir phosphate capsule could slow down the decrease of body weight in mice,decreased the mortality and lung index of mice,and prolonged MSDs;the MSDs of mice in ADSC high-dose,positive drug high-dose and medium-dose groups were signifi-cantly higher than model control group(P<0.05),and lung index was significantly lower than model control group except that of ADSC low-dose group(P<0.05). CONCLUSIONS:ADSC has certain antiviral effect against influenza A H1N1 virus in vivo.