蒲地蓝消炎口服液对呼吸道合胞病毒和腺病毒的体外抗病毒作用

Antiviral effects of pudilan xiaoyan oral liquid on respiratory syncytial virus and adenovirus in vitro

目的:研究蒲地蓝消炎口服液在体外对呼吸道合胞病毒(RSV)、腺病毒3型(ADV3)的抗病毒作用。方法:采用四甲基偶氮唑盐(MTT)比色法和细胞病变(CPE)抑制法检测蒲地蓝消炎口服液对Hep-2细胞的毒性作用以及对RSV、ADV3感染细胞的保护作用,判断其抗病毒效果。结果:蒲地蓝消炎口服液对Hep-2细胞的半数中毒浓度(TC50)为776.97 mg/L;抑制RSV和ADV3的半数有效浓度(EC50)分别为28.08、28.10 mg/L;其治疗指数(TI)分别为27.67、27.65,安全系数均高于利巴韦林。与病毒对照组比较,蒲地蓝消炎口服液能明显降低RSV和ADV3感染细胞所致CPE的抑制率,且存在剂量依赖关系。结论:在体外,小剂量的蒲地蓝消炎口服液对RSV和ADV3感染的Hep-2细胞均有明显保护作用,且病毒CPE抑制率随着药物浓度的升高而增加,发挥更高的抗病毒作用。

Objective To study the antiviral effects of Pudilan xiaoyan oral liquid on Hep-2 cell models infected with respiratory syncytial virus （RSV）, adenoviruses serotype 3 strains （ADV3） in vitro. Methods The cell cytotoxic and inhibition effect of Pudilan xiaoyan oral liquid on RSV or ADV3 were investigated by MTT assay and the inhibitory assay for cytopathic effect （CPE） in Hep-2 cell cultures to detect its antiviral effects. Results The median toxic concentration （TC50） of Pudilan xiaoyan oral liquid on Hep-2 cells was 776.97 mg/ L. The median effective concentration （EC50） of inhibiting RSV and ADV3 were 28.08, 28.10 mg/L,whose therapeutic index （TI） were 27.67 and 27.65 respectively. The safety coefficient of Pudilan xiaoyan oral liquid is higher than that of control, ribavirin. Compared with the virus control group, Pudilan xiaoyan oral liquid can obviously produce actions of a dose-dependent relationship to inhibit CPE in Hep-2 cells infected with RSV or ADV3 virus. Conclusions Pudilan xiaoyan oral liquid significantly improves the protection against RSV and ADV3 virus infection in Hep-2 cells. And the inhibition of CPE induced by viruses infection increased with the elevation of higher drug concentration for its antiviral effect augmented in vitro.