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J Ethnopharmacol. 2009 Jun 22;123(2):257-66. doi: 10.1016/j.jep.2009.03.009. Epub 2009 Mar 20.

Production of Th1- and Th2-dependent cytokines induced by the Chinese medicine herb, Rhodiola algida, on human peripheral blood monocytes.

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1
School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, China.

Abstract

ETHNOPHARMACOLOGICAL RELEVANCE:

Rhodiola algida, an herb ingredient used in Chinese medicine, has been clinically proven to be effective in enhancing human immune responses.

AIM OF STUDY:

This study attempted to identify the potential immunomodulatory effect of Rhodiola algida extract in human immune system in vitro, and to examine its underlying molecular effects.

MATERIALS AND METHODS:

Firstly, the bioactive marker compound salidroside was used for standardization of Rhodiola algida extract by reversed-phase HPLC. Secondly, the regulation of human immune responses was investigated in human peripheral blood monocytes. A series of cytokines known to play important roles in the human immune responses were examined.

RESULTS:

The current study provided quantitative assay for the marker compound, salidroside, in the Rhodiola algida extract for ensuring the quality consistency of Rhodiola algida used in the following experiments. Biological assay indicated that Rhodiola algida stimulates human peripheral blood lymphocytes and its underlying immunomodulatory effects probably through its regulation of IL-2 in Th1 cells and IL-4, IL-6, IL-10 in Th2 cells.

CONCLUSION:

The findings may enable us to further explain the pharmacological properties in Chinese medicine and make Rhodiola algida a very promising immunomodulating agent.

PMID:
19429370
DOI:
10.1016/j.jep.2009.03.009
[Indexed for MEDLINE]
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