在认知健康的成年人中,下丘脑体积,睡眠和APOE基因型
Axel A S Laurell1,2, Elijah Mak1, Maria-Eleni Dounavi1
1Department of Psychiatry, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK.
概括
痴呆风险较高的个体的睡眠问题可能与早期的下丘脑变化有关. 阿波利波蛋白E (APOE) ε4基因变异与这些变化和老年人睡眠质量的恶化有关.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学是一种遗传学.
- 睡眠医学 睡眠医学
背景情况:
- 睡眠障碍越来越被认为是痴呆风险的潜在早期指标.
- 下丘脑是调节睡眠的关键大脑区域,在易患痴呆症的个体中,可能会经历早期的结构变化.
研究的目的:
- 调查阿波利波蛋白E (APOE) 基因型,下丘脑结构和认知健康个体的睡眠质量之间的关联.
- 探索老化如何与APOE基因型和下丘脑变化相互作用以影响睡眠障碍.
主要方法:
- 1939年参与PREVENT痴呆和ALFA研究的参与者自报睡眠数据 (匹兹堡睡眠质量指数) 的多变量回归分析.
- 基于阿波利波蛋白E (APOE) 基因型的参与者的分层:同位素,异位素和非载体.
- 使用FreeSurfer从T1加权磁共振图像中提取下丘脑子单位体积.
主要成果:
- APOE ε4同胞体与异胞体和非载体相比,表现出更大的前上下丘脑,特别是在年轻个体中.
- 55岁以后,APOE ε4载体报告睡眠质量较差 (PSQI全球得分较高).
- 较小的前上和管状上下丘脑子单元与睡眠障碍的增加有关.
- 睡眠时间和效率随着年龄的增长而下降,但这种效应仅在前下垂体较小的参与者中表现出明显.
结论:
- 衰老和APOE ε4基因型都与下丘脑的结构变化有关.
- 这些发现表明,睡眠功能障碍,下丘脑变化和痴呆风险之间存在潜在的联系机制.
- 这项研究强调了在衰老和痴呆的背景下,遗传倾向,大脑结构和睡眠障碍之间的复杂相互作用.
更多相关视频
08:20Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
Published on: October 2, 2019
11.8K
09:38Generalized Psychophysiological Interaction PPI Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease
Published on: November 14, 2017
14.8K
相关概念视频
Substance Use Disorders Affecting Sleep
151
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,...
151
Correlations
32.1K
Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
32.1K
Sleep Apnea
119
Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...
The condition is more prevalent among...
119
Understanding Sleep
201
Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
201
Hypothalamic-Pituitary Axis
58.5K
The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
58.5K
Insufficient Sleep and Sleep Deprivation
121
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...
121
