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摘要:
Objective::Mifepristone (RU486), one of the most common medications for artificial abortion, attenuates the immunoregulatory effects of progesterone. However, the specific immune regulatory mechanism of RU486 in abortion remains unknown. We intended to investigate the immunomodulatory effects of RU486 on abortion.Methods::Sixty female mice were divided into the control group (0 mg RU486) and RU486 group (2 mg/kg RU486). The uterus, peripheral blood, and spleen were obtained for isolation of specific cell types. The population and phenotype of immune cells in the decidua, peripheral blood, and spleen were analyzed using flow cytometry. Statistical differences between groups were determined using two-tailed t-test. For all statistical tests, P < 0.05 was considered statistically significant. Results::RU486 effectively induced abortion in pregnant mice, with a significantly higher number of decidual macrophages (dMφ) (control group = 25.55% ± 2.467%, RU486 group = 19.41% ± 1.423%; P < 0.05), especially the major histocompatibility complex II high subset. No difference in Mφ number was observed in the spleen or peripheral blood. Moreover, the dMφ from mice with RU486-induced abortion displayed a remarkable activated phenotype, with increased expressions of inducible nitric oxide synthase, tumor necrosis factor-α, and interleukin (IL)-12 but decreased expressions of arginase-1 and IL-10. We also found elevated levels of decidual CD4 + T-cells in the RU486 group that exhibited a higher level of the proinflammatory cytokine interferon-γ and a lower level of the anti-inflammatory cytokines, IL-4 and IL-10. Conclusions::We report a new mechanism of RU486-induced abortion via the regulation of innate cell Mφ activation and the adaptive response of CD4 + T-cells present in the decidua but not the periphery.
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篇名 Mifepristone (RU486) Inducing Abortion in a Mouse Model by Regulating Innate and Adaptive Immune Responses
来源期刊 生殖与发育医学(英文) 学科
关键词 Decidual CD4 + T-Cells Decidual Macrophages Induced Abortion RU486
年,卷(期) 2020,(2) 所属期刊栏目 Original Article
研究方向 页码范围 63-71
页数 9页 分类号
字数 语种 中文
DOI 10.4103/2096-2924.288021
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研究主题发展历程
节点文献
Decidual CD4 + T-Cells
Decidual Macrophages
Induced Abortion
RU486
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引文网络交叉学科
相关学者/机构
期刊影响力
生殖与发育医学(英文)
季刊
2096-2924
10-1442/R
16开
上海市平凉路1326弄3号楼3楼
2017
eng
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740
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0
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