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标题：Suppression of NO Production in Activated Macrophages in Vitro and ex Vivo by Neoandrographolide Isolated from Andrographis paniculata
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作者：Javzan Batkhuu ; Koichi Hattori ; Fumihide Takano 等
期刊名称：Biological and Pharmaceutical Bulletin
印刷版ISSN：0918-6158
电子版ISSN：1347-5215
出版年度：2002
卷号：25
期号：9
页码：1169-1174
DOI：10.1248/bpb.25.1169
出版社：The Pharmaceutical Society of Japan
摘要：In this study, we investigated the in vitro and ex vivo suppressive effects of Andrographis paniculata on nitric oxide (NO) production in mouse peritoneal macrophages elicited by bacillus Calmette-Guéin (BCG) and stimulated by lipopolysaccharide (LPS). Incubation of BCG-induced macrophages with the methanol extract of A. paniculata reduced LPS stimulated NO production. The diterpene lactones andrographolide and neoandrographolide were isolated as active components from the extract. These compounds suppressed NO production in a concentration-dependent manner in the concentration range from 0.1 to 100 μ M and their IC₅₀ values were 7.9 and 35.5 μ M . Neoandrographolide also suppressed NO production by 35 and 40% when the macrophages were collected after oral administration of neoandrographolide at doses of 5 and 25 mg/kg/d and LPS stimulated NO production was examined. However, andrographolide did not reduce NO production on oral administration at the same doses. These results indicate that neoandrographolide, which inhibited NO production both in vitro and ex vivo may play an important role in the use of A. paniculata as an anti-inflammatory crude drug.
关键词：neoandrographolide;andrographolide;nitric oxide;macrophage;inflammation;Andrographis paniculata