灰质微观结构的变化与多余的细胞外自由水有助于双极性障碍的认知功能障碍:与白质病理学的比较分析
Yasuhito Nagai1, Toshimasa Fujimura2, Wataru Uchida3
1Department of Psychiatry and Behavioral Science, Juntendo University Graduate School of Medicine, Japan; Department of Psychiatry, Juntendo University Urayasu Hospital, Japan.
NeuroImage
|June 21, 2025
概括
双相情感障碍 (BD) 中的认知功能障碍与灰质中细胞外自由水 (FW) 的增加有关,而不是白质变化. 这一发现为BD认知缺陷的病理生理学提供了新的见解.
科学领域:
- 神经成像是一种神经成像.
- 精神病学是一个精神病学.
- 认知神经科学 认知神经科学
背景情况:
- 双极性障碍 (BD) 是一种慢性精神疾病,其特点是认知功能障碍.
- 之前的成像研究表明,在BD患者中,皮质厚度和白质完整性降低.
- 在BD中认知障碍的潜在生物机制尚未完全理解.
研究的目的:
- 为了研究白色和灰色物质微观结构的变化,euthymic双极性障碍患者.
- 探索这些微观结构变化与认知表现之间的关系.
主要方法:
- 在28名BD患者和28名对照组中利用了扩散性皮质图像,自由水图像以及神经元导向分散和密度图像.
- 基于通道的应用空间统计 (TBSS) 和基于灰质的空间统计 (GBSS) 用于微观结构分析.
- 进行了声音分析,以将微观结构变化与WAIS-IV认知指标相关联.
主要成果:
- 与对照组相比,BD患者的分数异构性 (FA) 减少,白质中的扩散性指数增加.
- 在BD患者的灰质区域中观察到同位体体积分数 (ISOVF) 和自由水 (FW) 的增加.
- 工作记忆和处理速度与特定大脑区域的FW负相关,而与扩散张力成像 (DTI) 指数的相关性是可以忽略不计的.
结论:
- 双相情感障碍的认知功能与灰色物质微观结构的改变更为密切相关,特别是细胞外自由水 (FW) 的增加.
- 白质完整性,以降低FA表示,与BD的认知表现的相关性较弱.
- 这些发现突出了细胞外空间变化在BD认知缺陷病理生理学中的作用.
更多相关视频
08:29Symmetric Bihemispheric Postmortem Brain Cutting to Study Healthy and Pathological Brain Conditions in Humans
Published on: December 18, 2016
14.2K
15:263D Modeling of the Lateral Ventricles and Histological Characterization of Periventricular Tissue in Humans and Mouse
Published on: May 19, 2015
14.2K
相关概念视频
Bipolar Disorder
152
Bipolar disorder is a chronic mental health condition marked by significant mood fluctuations, including episodes of mania and depression. Elevated energy levels, heightened mood or irritability, impulsive behavior, reduced sleep needs, rapid speech, racing thoughts, inflated self-esteem, and distractibility characterize mania. Individuals with bipolar disorder often alternate between depressive and manic states, with periods of emotional stability lasting an average of six months to a year.
152
Long-term Depression
2.6K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
2.6K
