首页> 外文期刊>Clinical immunology: The official journal of the Clinical Immunology Society >Enhanced in vitro activation of immunocompetent cells in healthy individuals being subcutaneously 'vaccinated' with placebo (physiological saline).
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Enhanced in vitro activation of immunocompetent cells in healthy individuals being subcutaneously 'vaccinated' with placebo (physiological saline).

机译:用安慰剂(生理盐水)皮下“接种”健康个体的免疫活性细胞的体外活化增强。

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The effect of subcutaneous injection of physiological saline (given as 'placebo' in a randomized double-blinded placebo-controlled study) on immunocompetent cells from healthy individuals was analyzed. In two studies in 1998/1999 and 2002, 16 and 13 healthy individuals, respectively, were injected subcutaneously with 1 ml physiological saline twice a week for up to 12 weeks. Lymphocytes were isolated before and during exposure and incubated with recall antigens (purified protein derivative [PPD], tetanus toxoid [TT], bacillus Calmette-Guerin [BCG]). The production of T-helper type 1-, type 2-, and macrophage/monocyte-related cytokines was analyzed by ELISA. There was a significant increase of the recall-antigen-induced production of IFNgamma, IL-5, IL-13, TNFalpha, and GM-CSF in both groups during the observation period. Subcutaneous injection of placebo, therefore, enhances immunoreactivity. Psychological aspects, activation of the autonomous nerve system or local activation of mast cells or dendriticcells may be responsible for this phenomenon.
机译:分析了皮下注射生理盐水(在随机双盲安慰剂对照研究中称为“安慰剂”)对健康个体免疫功能细胞的影响。在1998/1999和2002年的两项研究中,分别每周两次分别向16和13名健康个体皮下注射1 ml生理盐水,长达12周。在接触之前和接触过程中分离淋巴细胞,并与召回抗原(纯化的蛋白衍生物[PPD],破伤风类毒素[TT],卡介苗-芽孢杆菌[BCG])孵育。通过ELISA分析了1-型,2-型和巨噬细胞/单核细胞相关的细胞因子的产生。在观察期内,两组的召回抗原诱导的IFNγ,IL-5,IL-13,TNFα和GM-CSF的产生均显着增加。因此,皮下注射安慰剂可增强免疫反应性。心理方面,自主神经系统的激活或肥大细胞或树突状细胞的局部激活可能是造成这种现象的原因。

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