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微生物群对睡眠和体温的脂聚糖介导作用
Éva Szentirmai1,2, Katelin Buckley3, Ashley R Massie3
1Department of Translational Medicine and Physiology, Elson S. Floyd College of Medicine, Washington State University, 412 E Spokane Falls Blvd, Spokane, WA, 99210, USA. eszentirmai@wsu.edu.
Scientific reports
|November 9, 2024
概括
肠道细菌分子,如脂多糖 (LPS),可以影响睡眠. 在老鼠体内输入LPS促进了睡眠和发烧,突出显示了肝移植区域在肠-大脑轴信号传递中的作用.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 身体生理学 身体生理学
背景情况:
- 肠道微生物群的代谢物可以影响宿主生理学,包括睡眠.
- 之前的研究发现,丁酸盐和酸是诱导睡眠的分子.
- 脂多糖 (LPS) 在睡眠信号中的作用仍未得到充分研究.
研究的目的:
- 为了研究脂聚糖 (LPS) 进入门静脉时诱导睡眠的潜力.
- 为了确定肝移植区域对LPS诱导的睡眠和发烧的敏感性.
- 为了阐明前列腺素系统在LPS介导的睡眠和发烧中的参与.
主要方法:
- 低剂量LPS在老鼠的内输注射.
- 高剂量的LPS在门区以外的系统注射.
- 测量系统的LPS水平.
- 评估睡眠时间和体温.
- 药理学抑制使用indomethacin.
- 使用前列腺素E2和阿拉基酸.
主要成果:
- 低剂量内移植LPS增加了睡眠时间和长时间的发烧,但没有改变全身LPS水平.
- 在门区域之外使用的高剂量全身LPS没有影响睡眠.
- 由LPS诱导的睡眠和发烧被印米他辛抑制.
- 静脉内注射前列腺素E2或阿拉基酸复制的LPS效应.
结论:
- 肝移植区域对睡眠和发烧诱导的LPS具有局部敏感性.
- 前列腺素系统调解LPS的诱导睡眠和发烧的作用.
- 像LPS这样的肠道衍生分子在调节睡眠和生理反应方面发挥着重要作用.
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