描述精神分裂症中大质量介质形态:与衰老的关联,神经心理功能和非典型的海马体发育
bioRxiv : the preprint server for biology
|March 10, 2025
概括
大脑中介质 (MI) 是连接thalami的大脑结构,在精神分裂症成年人中较小,但这种差异与年龄有关,而不是神经发育. 缺失的MI很少见,但与海马体的不完全逆转有关,这表明早期的发育问题.
科学领域:
- 神经成像是一种神经成像.
- 神经解剖学是一个神经解剖学.
- 精神病学是一个精神病学.
背景情况:
- 中间质量 (MI) 连接左和右的乳头,并在怀孕的第二个三个月内发展.
- 以前的研究不一致地将较小或缺失的MI与精神分裂症 (SZ) 和认知缺陷等神经发育障碍联系在一起.
- 在SZ中,MI形态与其他大脑异常之间的关系,例如不完整的海马逆转 (IHI),仍然不清楚.
研究的目的:
- 与健康对照组相比,研究精神分裂症 (SZ) 患者中心脏病发作的存在,缺席和形态.
- 为了检查MI形态,认知功能和SZ中不完全的海马逆转 (IHI) 之间的关联.
- 确定心脏病发作的大小是否是神经发育异常的可靠指标,或反映了神经发作异常中的疾病进展/衰老.
主要方法:
- 在3T时使用结构T1加权的MRI扫描来评估223名SZ和194名健康对照个体的MI存在,缺席和形态.
- 研究小组之间进行了关于MI特征的统计比较.
- 分析了MI形态,认知表现和IHI之间的关联,对年龄和诊断进行控制.
主要成果:
- 缺失心脏病发作的患病率为1.7%,并且在不同组之间没有差异.
- 在SZ患者中,MI显著较小 (p < .001).
- 显著的诊断x年龄相互作用表明,SZ中MMI大小的负面年龄影响更强,这表明异常大小可能反映了衰老或疾病进展,而不是静态的神经发育差异. 在没有心脏病发作的人群中,IHI更常见,这表明共享的发育障碍.
结论:
- 虽然SZ成年人的MI大小较小,但这一发现主要是由与年龄相关的效应驱动的,质疑其作为精神分裂症神经发育异常的静态标志物的有用性.
- 缺失的MI和IHI之间的关联表明,在怀孕的第二个三个月期间,可能存在共享的神经发育障碍.
- 在这个样本中,缺少心脏病发作是罕见的,但它与IHI的同时发生需要进一步调查特定神经发育障碍的早期发育途径.
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