药效组分中药“黄金菊”对甲型流感病毒的抑制作用

目的：研究“黄金菊”抗甲型流感病毒PR8（A／PR8／34／H1N1）的活性，为药效组分中药的发现提供科学依据。方法：采用MTT掺入比色法测定药效组分中药“黄金菊”对狗肾传代细胞（MD—CK）的毒性及对PR8的有效性，同时设定阳性药物对照组及空白对照组；采用生物效价二剂量法对该药物与阳性药物的等效剂量进行比较。结果：该药物对MDCK细胞的TD50为1．9061mg·mL^-1；TD0为0．625mg·mL^-1；对流感病毒PR8的MIC为312．5μg·mL^-1，IC50为112．8694μg·mL^-1。双黄连粉针与“黄金菊”等反应剂量比为184．91％；病毒唑与“黄金菊”等反应剂量比为46．17％。结论：“黄金菊”具有对甲型流感病毒的直接抑制作用，且存在明显的量效反应关系，作用优于市场应用较广泛的双黄连粉针，开发前景广阔。

Anti-influenza Effect of Huangjinju, A Chinese Medicine with Active Components Alignment

The anti-influenza effect of Huangjinju, a Chinese medicine with active components alignment, was studied to provide scientific evidence for the discovery of new Chinese medicines. The anti-influenza effect of Huangjinju and its toxicity to MDCK were determined by the MTT assay. Meanwhile, the blank control and positive control were established. The equivalent-dose ratio of Huangjinju to positive drugs was estimated by the two-dose method. In MDCK, Huangjinju was found to inhibit influenza H1N1 virus in a concentration-dependent manner, with TD50 being 1.9061 mg· mL^-1, TD0 0.625mg · mL^-1, MIC 312.5 μg· mL^-1 and IC50 112.8694μg· mL^-1. The equivalent-dose ratio of Shuanghuanglian to Huangjinju was 184.91%, and that of Virazole to Huangjinju was 46.17%. The results showed that, compared with Shuanghuanglian, Huangjinju has direct inhibitory effect on H1N1 influenza virus. With an obvious dose-effect relationship, Huangjinju will have a bright prospect.