[Effects of Qiulirunfei extracta on immunological function and influenza virus in mice].

Objective: To investigate the effect of Qiulirunfei extracta on immunological function and Influenza virus type A (FM1 strain) in ICR mice.

Methods: After given Qiulirunfei extracta, mice's body weight, spleen weight and lymphocyte stimulation index (SI) were tested; its antiviral effect was also observed in mice and chick embryo.

Results: Qiulirunfei extracta inhibited effectively the growth of influenza virus type A (FM1 strain) in chick embryo, and reduced the mortality rate of mice infected by influenza virus type A (FM1 strain). Compared with control group, body weight, spleen index in experiment group increased greatly, and SI of lymphocyte increased significantly too.

Conclusion: Qiulirunfei extracta shows antiviral effects, and it is a good immune system enhancer.