Effects of Astragalus membranaceus in promoting T-helper cell type 1 polarization and interferon-γ production by up-regulating T-bet expression in patients with asthma
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Effects of Astragalus membranaceus in promoting T-helper cell type 1 polarization and interferon-γ production by up-regulating T-bet expression in patients with asthma
Chinese Journal of Integrative MedicineVol. 12, Issue 4, Pages: 262-267(2006)
Affiliations:
1. Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University,Chengdu,China
2. Department of Respiratory Disease, West China Hospital, Sichuan University,China
3. Department of Laboratory Medicine, Shenzhen Hospital Affiliated to Peking University,China
Author bio:
Funds:
Supported by Science Foundation of State Administration of Traditional Chinese Medicine (No. 04-05JQ03), and partly supported by China Postdoctoral Science Foundation (No. 2005037800).
Wang, G., Liu, Ct., Wang, Zl. et al. Effects of Astragalus membranaceus in promoting T-helper cell type 1 polarization and interferon-γ production by up-regulating T-bet expression in patients with asthma., Chin. J Integ. Med. 12, 262–267 (2006). https://doi.org/10.1007/s11655-006-0262-y
Wang Gang, Liu Chun-tao, Wang Zeng-li, et al. Effects of Astragalus membranaceus in promoting T-helper cell type 1 polarization and interferon-γ production by up-regulating T-bet expression in patients with asthma. [J]. Chinese Journal of Integrative Medicine 12(4):262-267(2006)
Wang, G., Liu, Ct., Wang, Zl. et al. Effects of Astragalus membranaceus in promoting T-helper cell type 1 polarization and interferon-γ production by up-regulating T-bet expression in patients with asthma., Chin. J Integ. Med. 12, 262–267 (2006). https://doi.org/10.1007/s11655-006-0262-yDOI:
Wang Gang, Liu Chun-tao, Wang Zeng-li, et al. Effects of Astragalus membranaceus in promoting T-helper cell type 1 polarization and interferon-γ production by up-regulating T-bet expression in patients with asthma. [J]. Chinese Journal of Integrative Medicine 12(4):262-267(2006) DOI: 10.1007/s11655-006-0262-y.
Effects of Astragalus membranaceus in promoting T-helper cell type 1 polarization and interferon-γ production by up-regulating T-bet expression in patients with asthma
摘要
To explore the effect of Astragalus membranaceus (AM) on T-helper cell type 1 (Th1) specific transcription factor T-box expressed in T cells (T-bet) expression and Th1/Th2 equilibrium. The levels of T-bet mRNA in peripheral blood mononuclear cells (PBMCs) from 15 patients with asthma and 15 healthy subjects were determined by reverse transcription-polymerase chain reaction (RT-PCR). PBMCs in asthma patients were incubated with AM and then the concentration of interferon γ (IFN-γ) and interleukin-4 (IL-4) in the supernate before and after AM intervention were determined by ELISA. The numbers of CD4+CCR3+ and CD4+CCR5+ cells were counted by flow cytometry. The expression of T-bet mRNA and the level of IFN-γ were lower
but level of serum IL-4 was higher in asthma patients when compared with those in healthy subjects respectively. After AM (60 μ g/ml) intervention
the former two parameters raised and showed a positive correlation between them
while the level of IL-4 was decreased. The mean percentage of CD4+CCR3+ cells in asthma patients was significantly higher but that of CD4+CCR5+ cells was lower when compared with those in healthy subjects respectively. After AM intervention
the abnormal change in the two indexes was improved to certain extent
showing a reversing status of Th2 polarization. AM could increase the expression of T-bet mRNA and Th1 cytokines such as IFN-γ
and might reverse the Th2 predominant status in asthma patients.
Abstract
To explore the effect of Astragalus membranaceus (AM) on T-helper cell type 1 (Th1) specific transcription factor T-box expressed in T cells (T-bet) expression and Th1/Th2 equilibrium. The levels of T-bet mRNA in peripheral blood mononuclear cells (PBMCs) from 15 patients with asthma and 15 healthy subjects were determined by reverse transcription-polymerase chain reaction (RT-PCR). PBMCs in asthma patients were incubated with AM and then the concentration of interferon γ (IFN-γ) and interleukin-4 (IL-4) in the supernate before and after AM intervention were determined by ELISA. The numbers of CD4+CCR3+ and CD4+CCR5+ cells were counted by flow cytometry. The expression of T-bet mRNA and the level of IFN-γ were lower
but level of serum IL-4 was higher in asthma patients when compared with those in healthy subjects respectively. After AM (60 μ g/ml) intervention
the former two parameters raised and showed a positive correlation between them
while the level of IL-4 was decreased. The mean percentage of CD4+CCR3+ cells in asthma patients was significantly higher but that of CD4+CCR5+ cells was lower when compared with those in healthy subjects respectively. After AM intervention
the abnormal change in the two indexes was improved to certain extent
showing a reversing status of Th2 polarization. AM could increase the expression of T-bet mRNA and Th1 cytokines such as IFN-γ
and might reverse the Th2 predominant status in asthma patients.
关键词
AsthmaAstragalus membranaceustranscription factorT-box expressed in T cellsT helper cellsTinterferon-γ
Keywords
AsthmaAstragalus membranaceustranscription factorT-box expressed in T cellsT helper cellsTinterferon-γ
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