在卫生假设中缺少一个拼图:低剂量的双甲暴露减弱了脂多糖诱导的喘保护
Mengjing Wang1,2, Jing Qu3, Junjie Yang2
1Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
PNAS nexus
|November 13, 2023
概括
双甲 (BPA) 中和保护性微生物脂多糖 (LPS),增加对过敏喘的易感性. 这种环境化学相互作用会影响城市人口的先天免疫力和喘发育.
科学领域:
- 环境健康 环境健康
- 免疫学 免疫学 免疫学
- 毒理学 毒理学 毒理学
背景情况:
- 过敏性喘在工业化国家正在上升,与环境因素有关.
- 微生物脂多糖 (LPS) 可以防止过敏性喘.
- 城市婴儿面临环境污染物的暴露增加.
研究的目的:
- 确定调节LPS生物活性的环境污染物.
- 研究双A (BPA) 与LPS的相互作用机制.
- 确定BPA对过敏性喘易感性的影响.
主要方法:
- 化酸盐测试屏幕和虚拟选模型.
- 对BPA-LPS相互作用进行了深入的机制分析.
- 室内灰尘虫 (HDM) 引起的过敏性喘的小鼠模型.
主要成果:
- 双甲 (BPA) 被确定为LPS生物活性的中和剂.
- BPA与LPS的脂质A成分结合,使其免疫刺激作用无效.
- 在小鼠中,BPA暴露增加了对HDM诱导的过敏喘的敏感性.
- BPA重新激活了肺上皮细胞,并放大了2型免疫反应.
结论:
- 乙破坏LPS的保护作用,导致过敏性喘.
- 环境化学物质的暴露,如BPA,改变了先天的免疫反应.
- 了解这些相互作用对于开发针对城市化相关免疫疾病的干预措施至关重要.
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