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精神分裂症中的海马体子场活动:疾病过程的影响

Elena I Ivleva¹, Jayme M Palka¹, Anastasia M Bobilev¹

¹Department of Psychiatry, UT Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA.

Schizophrenia research

|September 7, 2025

概括

在精神分裂症中,海马活动在疾病过程中发生变化,早期阶段显示过度活跃,后期阶段显示活动减少. 这种模式可能有助于根据疾病阶段量身定制精神分裂症的治疗方法.

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.
人类大脑成像人类大脑成像

背景情况:

精神分裂症与海马体的改变有关,但在整个疾病过程中,其活动模式尚不清楚.
了解这些模式对于开发特定阶段的干预措施至关重要.

研究的目的:

为了研究海马活动,通过相对脑血量 (rCBV) 测量,在精神分裂症的不同阶段.
为了检查精神分裂症患者的一级亲属的海马活动.
为了探索药物对海马活动的潜在影响.

主要方法:

85名参与者 (精神分裂症试验者,亲属,健康对照) 接受了超高分辨率的3TMRI.
血管空间占用 (VASO) MRI 用于估计海马子领域 (DG,CA3,CA1,SUB) 的rCBV.
精神分裂症参与者按疾病持续时间分层 (早期,中期,高级);亲属按精神病谱系障碍史分组.

主要成果:

在精神分裂症患者和对照人群之间,或在接受药物治疗和未接受药物的患者之间,没有发现海马体rCBV的显著差异.
与晚期精神分裂症患者和对照人群相比,早期精神分裂症患者在CA3,CA1和DG中表现出较高的rCBV.
观察到海马rCBV的轨迹:在前7年升高,在8-20年停滞,然后下降.
与对照组相比,患有精神病谱系障碍的亲属在SUB,CA1和DG中显示rCBV减少.

结论:

在整个精神分裂症疾病过程中,海马体rCBV模式存在显著差异.
区域性海马活动可能作为精神分裂症进展的生物标志物.
这些发现表明,准精神分裂症中海马回路的特定阶段干预措施的潜力.

关键词:

大脑血液体积 (CBV)疾病的发展过程.在海马体内,海马体精神分裂症是一种精神分裂症.副领域副领域血管空间占用 (VASO) 是指

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