黑色素调节TLR4/MyD88/NF-κB信号通路,以改善睡眠不足大鼠的认知障碍
Chao Yin1,2,3, Meiya Zhang1,2,3, Li Cheng1
1School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, China.
Frontiers in pharmacology
|August 5, 2024
概括
黑色素 (MT) 能防止由慢性睡眠不足 (SD) 引起的认知衰退. 通过减少神经炎症和保护神经元,MT治疗改善了大鼠的记忆力,支持其用于SD相关的认知障碍.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
- 公共卫生 公共卫生
背景情况:
- 睡眠不足 (SD) 是一个全球性的健康问题,与认知衰退和神经退行性疾病有关.
- 桃腺激素 - - 黑激素 (MT) 具有神经保护性.
- 了解MT对SD诱导的认知障碍的机制至关重要.
研究的目的:
- 在大鼠模型中研究黑素 (MT) 对慢性睡眠剥夺引起的认知障碍的保护作用.
- 阐明MT神经保护作用的基本机制.
主要方法:
- 一个为期3周的修改后的多平台方法在老鼠中诱导睡眠剥夺.
- 用莫里斯水迷宫测试来评估认知功能.
- 通过组织染色,西部斑点,ELISA和qPCR评估神经保护和分子途径.
主要成果:
- MT (50和100毫克/公斤) 显著改善了SD老鼠的空间识别和学习记忆.
- MT治疗减少了海马神经退行,神经元损失和炎症标志物 (LPS,IL-1β,IL-6,TNF-α).
- MT抑制了TLR4/MyD88/NF-κB通路,逆转了Aβ42和Iba1的表达,并恢复了ZO-1和奥克卢丁水平.
结论:
- 黑色素改善睡眠不足大鼠的认知功能障碍.
- 通过减少神经炎症和抑制TLR4/MyD88/NF-κB信号通路,MT发挥神经保护作用.
- MT显示了作为睡眠剥夺相关认知障碍的替代治疗的潜力.
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