在创伤后应激障碍中阐明与创伤相关和与疾病相关的区域皮质活动
Ruihan Zhong1, Lianqing Zhang1, Hailong Li1
1Department of Radiology and Huaxi MR Research Center (HMRRC), Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China.
Cerebral cortex (New York, N.Y. : 1991)
|July 30, 2024
概括
患有创伤后应激障碍 (PTSD) 的创伤幸存者表现出大脑活动的改变,特别是在小脑和部区域. 这些大脑变化在PTSD患者中更为明显,这表明这种疾病存在特定的神经支柱.
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.
- 医疗成像医学成像
背景情况:
- 创伤可以改变大脑活动,但涉及创伤后应激障碍 (PTSD) 发展的特定区域仍然不清楚.
- 了解内在的大脑活动变化对于阐明PTSD病理生理学至关重要.
研究的目的:
- 调查与创伤相关的和PTSD相关的皮质内在活动的改变.
- 通过全脑分析,确定与PTSD发展相关的特定大脑区域.
主要方法:
- 招募了47名PTSD患者,64名受创伤暴露的对照和46名健康的对照.
- 利用回声平面成像 (EPI) 来评估内在的大脑活动.
- 计算了五个关键的功能参数:低频波动的振幅 (ALFF),低频波动的分数振幅 (fALFF),区域均性 (ReHo),度中心性 (DC) 和声量镜同位素连接性 (VMHC).
主要成果:
- 与健康对照人群相比,PTSD患者和受创伤暴露的对照人群都在小脑后部和下圈中减少了ALFF.
- 在两组中都观察到小脑前部fALFF和ReHo的减少,在PTSD患者中更严重的损伤.
- 在暴露于创伤的个体中,中椎和骨中也发现了减少的fALFF,在PTSD患者中严重程度更高.
- 左小脑中的fALFF与PTSD症状严重程度正相关 (临床医生管理的PTSD尺度得分).
结论:
- 内在大脑活动的特定变化,特别是在小脑和部区域,与创伤暴露和PTSD有关.
- 这些发现突出了小脑在PTSD神经回路中的作用.
- 已确定的大脑区域为未来的PTSD治疗提供了潜在的目标.
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