(R)-albuterol decreases immune responses: role of activated T cells.

(R)-albuterol decreases immune responses: role of activated T cells.
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(R) - 阿丁洛醇降低免疫反应:活化T细胞的作用。

DOI:
10.1186/1465-9921-9-3
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发表时间:
2008-01-14
影响因子:
5.8
通讯作者:
Finn, Patricia W.
Finn, Patricia W.
中科院分区:
医学2区
文献类型:
--
作者:
Ferrada, Marcela A.;Gordon, Erin L.;Jen, Kai Yu;He, Hong Zhen;Lu, Xin;Barone, Leesa M.;Amirifeli, Sepideh;Perkins, David L.;Finn, Patricia W.

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外消旋沙丁胺醇是两种异构体(R)和(S)的等摩尔混合物。(R)和(S)异构体以及两者的组合是否在免疫激活中发挥不同的作用还没有很好的定义。我们分析了(R+S)-沙丁胺醇、(R)-沙丁胺醇和(S)-沙丁胺醇在过敏性肺部炎症小鼠模型和活化T细胞中的作用。用(R)-沙丁胺醇、(S)-沙丁胺醇或(R+S)-沙丁胺醇处理用变应原卵清蛋白(OVA)或磷酸盐缓冲盐水(PBS)致敏和气溶胶激发的小鼠(C57 BL/6)。给予(R)-沙丁胺醇后,过敏原诱导的支气管肺泡灌洗液嗜酸性粒细胞和IgE显示降低,但ANOVA结果不显著。由于T细胞在过敏性炎症中很重要,我们询问(R+S)、(R)或(S)-沙丁胺醇对T细胞和炎症转录因子NF-κB活性的影响是否不同。在活化的T细胞中,(R)-沙丁胺醇给药降低了炎性细胞因子水平和NF-κB活性。这些研究表明,(R)-沙丁胺醇降低T细胞中的细胞因子分泌和NF-κB活性。
Racemic albuterol is an equimolar mixture of two isomers, (R) and (S). Whether (R) and (S) isomers and the combination of both exert different effects in immune activation is not well defined. We analyzed the effects of (R+S)-albuterol, (R)-albuterol and (S)-albuterol in a murine model of allergic pulmonary inflammation and in activated T cells. Mice (C57BL/6) sensitized and aerosol challenged with the allergen ovalbumin (OVA) or phosphate buffered saline (PBS) were treated with (R)-albuterol, (S)-albuterol or (R+S)-albuterol. Following administration of (R)-albuterol, allergen induced bronchoalveolar lavage eosinophils and IgE showed a decrease, albeit not significantly by ANOVA. As T cells are important in allergic inflammation, we asked whether (R+S), (R) or (S)-albuterol might differ in effects on T cells and on the activity of the inflammatory transcription factor NF-κB. In activated T cells, (R)-albuterol administration decreased levels of inflammatory cytokines and NF-κB activity. These studies suggest that (R)-albuterol decreases cytokine secretion and NF-κB activity in T cells.
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