在轻度认知障碍和早期痴呆症中,神经心理症状和基于神经成像的脑年龄:一项多中心研究
Daichi Sone1, Iman Beheshti2, Kenji Tagai1
1Department of Psychiatry, Jikei University School of Medicine, Tokyo, Japan.
Psychiatry and clinical neurosciences
|January 17, 2025
概括
早期痴呆阶段的抑郁和冷漠等神经精神病症状与晚期大脑衰老相关. 脑年龄分析显示,它有可能作为监测这些症状的生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 医疗成像医学成像
- 机器学习 机器学习
背景情况:
- 神经精神症状 (NPS) 显著影响痴呆症,但其神经生物学基础尚不清楚.
- 使用机器学习来估计大脑年龄,为个人层面的评估提供了一个有希望的生物标志物.
- 了解大脑年龄和NPS之间的联系对于痴呆症护理至关重要.
研究的目的:
- 为了研究大脑年龄和NPS之间的关系,在有amnestic轻度认知障碍 (MCI) 和早期痴呆症的个体中.
- 探索大脑预测年龄差异 (大脑-PAD) 作为NPS生物标志物的实用性.
主要方法:
- 对结构性大脑MRI和499名参与者的临床数据 (MCI,早期阿尔茨海默病,勒维体痴呆症) 的截面分析.
- 在健康的大脑MRI上使用支持向量的回归来开发大脑年龄预测模型.
- 通过从预测的大脑年龄中减去时间年龄来计算大脑-PAD.
主要成果:
- 所有参与者群体的脑PAD显著增加,与时间学年龄相比.
- 在大脑PAD和抑郁症/冷漠症症状类别之间发现了显著的正相关性.
- 大脑PAD与其他NPS类别 (兴奋,妄想,高兴) 之间没有明显的相关性.
结论:
- 大脑年龄升高与MCI和早期痴呆症的抑郁和冷漠症状有关.
- 脑年龄分析可以作为评估和监测神经退行性疾病中NPS的新生物标志物.
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