895-控制病感行为的下丘脑神经中枢 episode artwork

EPISODE · May 3, 2026 · 18 MIN

895-控制病感行为的下丘脑神经中枢

from 聊聊Sci

这篇文章识别了位于下丘脑腹侧正中视前区(VMPO)的一群特定神经元,它们在感染期间充当协调发烧与行为改变的中枢控制器。通过对小鼠进行基因测序和成像分析,研究人员发现这些神经元会被局部非神经细胞释放的免疫信号(如前列腺素和细胞因子)激活。实验证明,人为激活这群神经元会直接引发体温升高、食欲抑制以及趋温行为,而移除这些细胞则会显著削弱感染引发的病理反应。此外,该研究揭示了这些神经元通过复杂的脑回路与调节体温及代谢的区域相连。总之,这项发现阐明了神经系统如何整合免疫信息,从而精准调控生物体在患病时的生理与行为适应。References: Osterhout J A, Kapoor V, Eichhorn S W, et al. A preoptic neuronal population controls fever and appetite during sickness[J]. Nature, 2022, 606(7916): 937-944.前往小宇宙评论区与主播互动

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895-控制病感行为的下丘脑神经中枢

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