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Immunomodulatory Effects of Hedysarum polybotrys Extract in Mice Macrophages, Splenocytes and Leucopenia

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Author(s): Guan-Cheng Huang | Chia-Jung Lee | Kun-Teng Wang | Bor-Chun Weng | Ting-Yi Chien | Sung-Hui Tseng | Ching-Chiung Wang

Journal: Molecules
ISSN 1420-3049

Volume: 18;
Issue: 12;
Start page: 14862;
Date: 2013;
Original page

Keywords: Hedysarum plybotrys Handel-Mazzetti (Hedysari Radix) | Fabaceae | Astragali Radix | anti-inflammation | splenocyte proliferation | daunoblastina-induced leucopenia mice

ABSTRACT
Astragali Radix (Huang-Qi) is a popular herbal medicine commonly used as a constituent in tonic herbal preparations. Hedysarum polybotrys Handel-Mazzetti is one species used of Astragali Radix. In this study, the immunomodulatory properties of H. polybotrys were explored by LPS-activated and SNP-treated RAW 264.7 cells and splenocytes and, daunoblastina-induced leucopenia BALB/c mice. Formononetin was used as the bioactive marker to monitor the quality of the H. polybotrys extracts. H. polybotrys was extracted with hot-water and methanol, and MeOH extract partitioned with H2O (M-H) and ethyl acetate (M-EA) to yield four different fractions. M-EA had the highest formononetin and total proanthocyanidin content and showed stronger inhibitory effects on the production and expression of NO, PGE2, iNOS and COX-2 in LPS-activated RAW 264.7 cells and splenocytes than the other fractions. In addition, M-EA significantly stimulated the proliferation of LPS-activated RAW 264.7 cells and splenocytes, enhanced NO radicals scavenging and attenuated NO-induced cytotoxicity.  Furthermore, M-EA also significantly increased the rate of recovery of white blood cells level in daunoblastina-induced leucopenia mice. These evidences suggest that this traditional Qi-tonifying herb has potential effects in clinical conditions when immune-enhancing and anti-inflammatory effect is desired.

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