959-硬脑膜窦的免疫监视与流体动力学研究

这项研究揭示硬脑膜窦并非单纯的被动排血通道，而是高度动态的神经免疫界面。研究发现，小鼠的上矢状窦具有独特的分叉结构，并通过RAMP1介导的平滑肌收缩与舒张来主动调节颅内压。通过高分辨率成像，科学家观察到窦内皮细胞（SECs）呈现高度分窗性，并能以RAMP2依赖的方式动态开启和关闭细胞边界，形成所谓的“褶皱”现象。这种内皮表面的动态变化对于免疫细胞的巡逻以及脑脊液与血液间的物质交换至关重要。此外，在病毒感染期间，若阻断这种内皮动态，会严重削弱局部的抗病毒免疫，导致病原体更容易侵入脑膜。总之，这些发现确立了硬脑膜窦在维护中枢神经系统流体平衡和免疫防御中的核心作用。References:* Monaghan K L, Zanluqui N G, Su Y, et al. Highly dynamic dural sinuses support meningeal immunity[J]. N...去小宇宙查看完整单集简介前往小宇宙评论区与主播互动

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