| Macrophage immunomodulatory activity of the polysaccharides from the roots of Bupleurum smithii var. parvifolium. | |
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MedLine Citation:
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PMID: 20546871 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIM OF THE STUDY: Radix Bupleuri, one of the most frequently prescribed crude herbs in traditional Chinese medicine, has been used for centuries to treat inflammatory diseases. However, little is known about the therapeutic mechanisms of crude polysaccharides (BPs) isolated from the roots of Bupleurum smithii var. parvifolium. Macrophages play important roles in inflammatory diseases such as systemic lupus erythematosus (SLE). The purpose of the present work was to investigate immunomodulative effects of Bupleurum polysaccharides on murine peritoneal macrophages. MATERIALS AND METHODS: BALB/c mice were administered intragastrically with Bupleurum polysaccharides 20, 40, and 80 mg kg(-1) day(-1), or prednisone 3 mg kg(-1) day(-1) or levamisole 25 mgk g(-1) day(-1) from day 0 to day 6. Peritoneal macrophages were isolated 5 days after intraperitoneal injection of 1 mL 5% sodium thioglycollate. Phagocytic functions of macrophages were studied; cytokines concentrations in the culture supernatants were determined by enzyme-linked immunosorbent assay and the secretion of nitric oxide (NO) was quantified by Griess reaction. RESULTS: Treatment with BPs enhanced phagocytic functions of macrophages (phagocytosis of apoptotic thymocytes, IgG-opsonized sheep red blood cells and chicken red blood cells) and inhibited LPS-induced productions of NO and proinflammatory cytokines (interleukin-1beta, interleukin-6 and tumor necrosis factor-alpha). CONCLUSIONS: Bupleurum polysaccharides up-regulated phagocytic activities but inhibited LPS-induced productions of proinflammatory mediators. These data suggested that at least part of the traditional beneficial effects of Bupleurum on inflammatory diseases could be ascribed to the immunomodulatory effects of Bupleurum polysaccharides on macrophages. |
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Authors:
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Xiao-Qin Cheng; Hong Li; Xi-Ling Yue; Jun-Yun Xie; Yun-Yi Zhang; Hong-Ye Di; Dao-Feng Chen |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-06-01 |
Journal Detail:
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Title: Journal of ethnopharmacology Volume: 130 ISSN: 1872-7573 ISO Abbreviation: J Ethnopharmacol Publication Date: 2010 Jul |
Date Detail:
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Created Date: 2010-07-20 Completed Date: 2010-11-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7903310 Medline TA: J Ethnopharmacol Country: Ireland |
Other Details:
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Languages: eng Pagination: 363-8 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Elsevier Ireland Ltd. All rights reserved. |
Affiliation:
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Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Anti-Inflammatory Agents / pharmacology* Bupleurum Cells, Cultured Chickens Cytokines / metabolism Dose-Response Relationship, Drug Enzyme-Linked Immunosorbent Assay Immunologic Factors / pharmacology* Inflammation Mediators / metabolism Macrophages, Peritoneal / drug effects*, immunology Male Mice Mice, Inbred BALB C Nitric Oxide / metabolism Phagocytosis / drug effects Plant Extracts / pharmacology* Polysaccharides / pharmacology* Sheep |
| Chemical | |
Reg. No./Substance:
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0/Anti-Inflammatory Agents; 0/Bupleurum root extract; 0/Cytokines; 0/Immunologic Factors; 0/Inflammation Mediators; 0/Plant Extracts; 0/Polysaccharides; 10102-43-9/Nitric Oxide |
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