[Effect of anti-influenza virus H3N2 of Hypericum japonicum in vivo].

OBJECTIVE: To investigate anti-influenza virus H3N2 effect of Hypericum japonicum in vivo. METHODS: The influences on lung index and death rate were observed in the mice infected with virus H3N2 from intranasal. RESULTS: Experiments in vivo showed that Hypericum japonicum at the concentration of 10 g/kg x d for the intranasal treatment markedly inhibited the lung consolidation of mice pneumonia caused by the infection of influenza virus H3N2 and prolonged the survival time . CONCLUSION: Hypericum japonicum may be effective on treating influenza.