在第一发精神分裂症急性阶段的海马 perfusion 异常和治疗效应
Hao Hu1, Mengqing Xia1, Lihe Chen1
1Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China.
Schizophrenia research
|July 24, 2025
概括
第一次精神分裂症患者表现出海马体血流减少,随着治疗而改善. 这种功能性变化,而不是结构性变化,表明早期精神分裂症的潜在治疗点.
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.
- 放射学 放射学是一门学科.
背景情况:
- 第一次精神分裂症 (FES) 患者通常对最初的抗精神病治疗反应不佳.
- 海马是精神分裂症早期受影响的大脑区域,但治疗反应的预测因素尚不清楚.
- 动脉旋转标记 (ASL) MRI 可以测量脑血流 (CBF),但其在FES海马 perfusion 中的使用,尤其是电疗法 (ECT),是有限的.
研究的目的:
- 在第一发精神分裂症 (FES) 患者中使用ASLMRI调查海马脑大脑血流 (CBF).
- 为了比较仅用抗精神病药物治疗的FES患者的海马CBF和体积,与抗精神病药物加ECT.
- 在六周治疗后评估海马CBF和体积的纵向变化.
主要方法:
- 高分辨率的ASLMRI用于测量50名FES患者和28名健康对照者的海马体CBF.
- 患者接受抗精神病药物 (n=20) 或抗精神病药物加ECT (n=30) 治疗六周.
- 统计分析包括ANCOVA和线性混合效应模型来评估组和时间效应.
主要成果:
- FES患者的基线海马CBF明显低于对照组;海马体积相似.
- 在FES患者治疗后观察到海马CBF的显著增加,而体积保持不变.
- CBF的变化与症状减轻无关,在ECT+药物和仅药物组之间没有发现纵向变化的显著差异.
结论:
- 功能性海马体变化,以减少CBF表示,在早期精神分裂症中存在,并且似乎对治疗有反应.
- 在这种急性阶段,海马结构变化并不明显.
- 建议在更大的样本中进行进一步验证,并进行延长的随访和神经化学评估.
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