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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (9): 1076-1078.

• 药物治疗学 • 上一篇    下一篇

维生素A 免疫干预机制的研究

刘雅丽   

  1. 浙江省杭州市第一人民医院, 杭州310000, 浙江
  • 收稿日期:2007-05-11 修回日期:2007-08-17 出版日期:2007-09-26 发布日期:2020-10-30
  • 作者简介:刘雅丽, 女, 博士, 副主任医师, 研究方向:临床免疫。Tel:0571-81719682 E-mail:Wjyliu@163.com
  • 基金资助:
    杭州市医药卫生科技计划项目(2003B002)

Effects of Vit A on the immunologic status of infants with bronchiolitis

LIU Ya-li   

  1. First People Hospital of Hangzhoushi, Hangzhou 310006, Zhejiang, China
  • Received:2007-05-11 Revised:2007-08-17 Online:2007-09-26 Published:2020-10-30

摘要: 目的:观察毛细支气管炎(简称毛支) 患儿血浆维生素A(RA) 的水平及探讨RA 体外对毛支患儿免疫功能的干预机制研究。方法:取健康及毛支患儿外周血, 提取血浆检测血浆RA 的浓度;对外周血进行体外分离单核细胞, 在培养同时加入不同浓度的RA, 观察RA 对单核细胞的作用及与IL-12 水平之间的关系;分离外周血的淋巴细胞, 加入不同浓度的RA 处理的单核细胞培养液, 用生理盐水者为阴性对照, 培养满3 d 收集培养上清液检测上清中γ干扰素(IFN-γ) 水平, 以分析RA 对毛支患儿TH 亚类分化的影响。结果:毛支患儿血浆RA 的水平显著低于正常对照组;体外实验结果显示RA 浓度为1×10-10 mol/L 时, 刺激儿童外周血单核细胞分泌IL-12 水平最高, 促使IFN-γ的分泌, 与干预前相比具有统计学差异;RA 浓度为1×10-7 mol/L 时具有抑制作用。结论:毛支患儿血浆RA 的水平下降;RA 浓度与IL-12 水平呈生物学上的负“量效反应”关系,浓度为1×10-10 mol/L RA 在体外具有逆转毛支患儿TH2 的功能。

关键词: 维生素A, 毛细支气管炎, 白细胞介素-12, γ干扰素

Abstract: AIM: To observe the concentration of serum vitaminA and discuss the effects of vitamin A on the immune function in infants with acute bronchiolitis in vitro.MEDHODS:16 cases of bronchiolitis with RSV infection and 13 controls were studied.Serum vitamin A level of acute bronchiolitis patients and control infants were measured.The cytokines in supernatant of bronchiolitis, PBMC, IL-12 and IFN-γ, were measured by ELISA after treatment with vitamin A.RESULTS: Serum vitamin A level of patients was lower than control group.Pretreatment with lower level of vitamin A (1×10-10mol/L) in vitro lead to higher level of IL-12 in supernatant, and significantly promoted IFN-γ secretion. Vitamin A at 1×10-7 mol/L in vitro inhibited IL-12 secretion.CONCLUSION: The study suggested that serum concentration of vitamin A decreases at acute stage of bronchiolitis, Vitamin A associate with the level of IL-12 negatively in vitro.When vitamin A was at 1×10-10 mol/L, it reverse the function of TH2 of bronchiolitis infants in vitro.

Key words: bronchiolitis, vitamin RA, IL-12, IFN-γ

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