在患有创伤后应激障碍的患者中,依赖年龄的脑皮下白质和灰质干扰
Kambiz Kangarlou1, Samira Raminfard2, Jayran Zebardast2
1Department of Medical Physics, Faculty of Medicine, Iran University of Medical Science, Tehran, Iran.
Anatomy & cell biology
|April 9, 2025
概括
创伤后应激障碍 (PTSD) 与大脑结构的变化有关. 患有PTSD的年轻退伍军人表现出比老年人更显著的灰色和白质异常.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 放射学 放射学是一门学科.
背景情况:
- 创伤后应激障碍 (PTSD) 是创伤后的一种精神疾病.
- 创伤后应激障碍与功能和结构性大脑异常有关.
- 在PTSD中与年龄相关的大脑结构的差异尚未完全理解.
研究的目的:
- 研究患有PTSD的退伍军人皮下灰色和白质的年龄相关差异.
- 为了在不同年龄组中比较PTSD患者和健康对照者的大脑结构.
主要方法:
- 使用了结构磁共振成像 (MRI) 和扩散张力成像 (DTI).
- 参与者包括44名患有PTSD的退伍军人和48名健康对照.
- 分析对比了50岁以下和50岁以上的个体.
主要成果:
- 创伤后应激障碍患者表现出较小的皮质下灰色物质体积 (大脑丘脑,海马,杏仁体,白体,accumbens).
- 在PTSD患者中,DTI揭示了白质完整性的降低 (较低的分数异性质).
- 与对照组相比,年轻的PTSD患者表现出更广泛的灰色和白质异常.
结论:
- 创伤后应激障碍与显著的结构性大脑变化有关.
- 年龄会影响PTSD中大脑异常的表现和程度.
- 结构变化可能会导致PTSD的病理生理学.
相关概念视频
Post-traumatic Stress Disorder
21
Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events,...
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events,...
21
Traumatic Memory
52
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
52
Stress and Mental Health
63
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Individuals with depression often experience challenges in both their personal and professional...
63


