精神分裂症中的大脑结构:我们知道什么以及接下来要做什么?
1Division of Psychiatry, University of Edinburgh, Edinburgh, UK.
The lancet. Psychiatry
|August 21, 2025
概括
精神分裂症与大脑体积和连接能力的减少有关, 这些结构性大脑差异与患者的症状严重程度和认知问题相关.
科学领域:
- 神经成像
- 精神病学
- 神经科学
背景情况:
- 对成千上万精神分裂症患者的结构性MRI和扩散性MRI研究进行了广泛的分析,发现与健康对照人群相比,大脑体积和结构连接性显著减少.
- 证据表明,这些观察到的结构性大脑差异可能存在于精神分裂症症状出现之前 (病态前).
研究的目的:
- 综合大规模精神分裂症神经成像研究的结果.
- 研究大脑结构变化,症状严重程度和认知障碍之间的关系.
- 探索精神分裂症患者大脑体积变化的时间动态.
主要方法:
- 结构磁共振成像 (MRI) 和扩散MRI数据的元分析和超级分析.
- 相关分析检查大脑结构,症状严重程度和认知功能之间的关系.
- 将发现与死后研究结合起来,以阐明潜在的病理生理学.
主要成果:
- 在精神分裂症症状的严重程度和认知障碍程度之间观察到一致的相关性.
- 不同分析方法的一致证据证实了观察到的结构差异的非事物性质.
- 死亡后的研究支持一种病理生理学,其特征是减少神经元大小和树突树木化,这表明多因素的基础.
结论:
- 精神分裂症的结构性MRI变化可能出现在危险状态和第一个精神病发作之间,持续的减少可能与较差的结果有关.
- 虽然有些发现非常有意义,但许多需要通过充分支持的研究和标准化的方法进行进一步调查.
- 未来的进步需要明确的假设,强大的研究设计和标准化的报告,以推进科学理解和临床应用.
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