|
KMID : 1200820030030020106
|
|
Oriental Pharmacy and Experimental Medicine
2003 Volume.3 No. 2 p.106 ~ p.110
|
|
|
Antiviral activity of Herba Patrinea (a Chinese medicinal herb) against respiratory syncytial virus in vitro
|
|
Li Hong-Yuan
Li Shan-Shan
Liu Dian-Li
Dong Yan-Mei
Tian Wen-Jing
|
|
|
Abstract
|
|
|
|
Respiratory syncytial virus (RSV) has long been considered an important cause of severe lower respiratory tract infection in infants and young children throughout the world. Unfortunately, no effective treatment of RSV exists. Therefore, New agents are needed to reduce the impact of RSV. We have studied the anti-viral effect of traditional Chinese midicinal herbs for over ten years and find Herba Patrinea (a Chinese medicinal herb) has the anti-RSV effect in vitro. In this study, the Herba Patrinea was extracted with hot water, condensed and sterilized. The cytotoxicity of the aqueous extract was tested by adding the diluted extract directly to HeLa cells and its effect on anti-RSV was estimated by the CPEI assay. As a result, the median cytotoxic concentration of Herba Patrinea was 32 mg/ ml by morphological observation, the median effective concentration (50% effective concentration, ) of the Herba Patrinea against replication of the Long strain of RSV in HeLa cells were 1.25 mg/ml. The selectivity index is 25.6. Moreover, Herba Patrinea gave a dose-dependent response in inhibiting RSV. In time of addition experiment, Herba Patrinea inhibited replication of RSV in HeLa cells when it was added at 0h, 2h, and 4h after virus infection. In summary, the results of this study suggest Herba Patrinea may be a novel anti-RSV drug and it is worthy of further studying.
|
|
|
KEYWORD
|
|
|
Herba Patrinea, Respiratory syncytial virus, Anti-viral effect
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|