早期精神病中的海马网络功能障碍:为期2年的纵向研究
Suzanne N Avery1, Baxter P Rogers2, Maureen McHugo1
1Department of Psychiatry and Behavioral Sciences, Vanderbilt University Medical Center, Nashville, Tennessee.
Biological psychiatry global open science
|October 26, 2023
概括
早期精神病与核心海马-中枢叶皮质网络中功能连接性升高有关. 这种超连接性随着时间的推移而正常化,可能表明早期精神分裂症标志物.
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:
- 在精神分裂症中始终观察到海马体异常.
- 虽然慢性精神分裂症显示海马体体积和功能减少,但早期阶段在功能连接方面呈现出混合的发现.
- 这项研究调查了早期精神病中海马网络连接的变化.
研究的目的:
- 为了测试这一假设,海马体网络连接在早期精神病中减少,并在两年内恶化.
- 分析早期精神病患者和健康对照者的纵向休息状态功能连接.
主要方法:
- 在140名参与者中检查了纵向静止状态的功能连接性 (68名早期精神病,72名对照).
- 在两个层面上量化了海马体网络连接:核心海马体 - 中间叶皮层 (MTLC) 和扩展的海马体 - 皮层网络.
- 利用图形理论和线性混合效应模型来分析群体和时间效应.
主要成果:
- 早期精神病患者在核心海马-MTLC网络中表现出高水平的功能连接.
- 在更广泛的海马-皮层网络中没有发现任何显著的变化.
- 随着时间的推移,海马-MTLC网络的超连接性正常化,并预测积极症状的改善.
结论:
- 在核心海马-MTLC网络中异常高的功能连接性是早期精神病的特征.
- 这种局部化的超连接性可能作为精神分裂症早期阶段的标志物.
- 研究结果表明,海马体-MTLC超连接的潜在预后和治疗含义.
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