在5xFAD小鼠中,CRY2调解了因睡眠剥夺引起的认知衰退
Sumei Luo1, Lizhe Guo1, Na Chen1
1Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, China.
PloS one
|July 16, 2024
概括
睡眠不足通过调节加密染色体-2 (CRY2) 的上升,导致突触功能障碍,使阿尔茨海默病 (AD) 小鼠的认知衰退恶化. 降低CRY2的调节可以减轻这些影响.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 加密染色体-2 (CRY2) 是一个核心节奏基因,参与DNA损伤修复.
- 这项研究调查了CRY2在5xFAD阿尔茨海默病 (AD) 鼠标模型中睡眠剥夺引起的认知衰退中的作用.
研究的目的:
- 为了确定CRY2是否调解AD小鼠睡眠剥夺引起的认知衰退.
- 阐明CRY2对认知功能的影响背后的分子机制.
主要方法:
- 使用18F FDG PET-CT来评估睡眠剥夺 (SD) 后的大脑葡萄糖代谢.
- 使用莫里斯水迷宫和Y迷宫测试评估认知功能.
- 在5xFAD小鼠中,通过lentivirus (过度表达) 和siRNA (下调) 操纵CRY2水平.
主要成果:
- 在AD小鼠中,SD诱导认知衰退和增加CRY2表达.
- 过度表达CRY2加剧了认知缺陷,而CRY2下调减轻了SD诱导的衰退.
- CRY2降低了CISH的表达,抑制了STAT1的酸化,导致突触功能障碍.
结论:
- 睡眠剥夺对AD小鼠海马中的CRY2进行上调.
- 这种上调导致通过降低CISH介导的STAT1酸化而导致突触功能障碍.
- 准CRY2可能为AD中与睡眠障碍相关的认知衰退提供治疗策略.
更多相关视频
06:23A Chronic Sleep Fragmentation Model using Vibrating Orbital Rotor to Induce Cognitive Deficit and Anxiety-Like Behavior in Young Wild-Type Mice
Published on: September 22, 2020
5.4K
08:44Electrocorticographic Recording of Cerebral Cortex Areas Manipulated Using an Adeno-Associated Virus Targeting Cofilin in Mice
Published on: February 21, 2021
4.3K
相关概念视频
Insufficient Sleep and Sleep Deprivation
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
REM Sleep Behavior Disorder
REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
RBD is significantly associated with...
Substance Use Disorders Affecting Sleep
Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
Understanding the concepts of physical dependence,...
