神经成像证明了帕金森病的微观结构变化与主观认知衰退的证据
Kaidong Chen1, Ruixuan Zhang1, Yi Ji1
1Department of Radiology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China.
NPJ Parkinson's disease
|March 14, 2026
概括
大脑中的微观结构变化可以在患有主观认知衰退 (SCD) 的帕金森病 (PD) 患者中检测到. 这些白质变化与认知状态相关,在PD中区分认知障碍的阶段.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 生物标志物 生物标志物
背景情况:
- 主观认知衰退 (SCD) 是帕金森病 (PD) 认知障碍的潜在早期阶段.
- 在PD-SCD中的微观结构性大脑变化还不太清楚.
- 区分PD的认知阶段对于了解疾病进展至关重要.
研究的目的:
- 研究与正常认知 (PD-NC) 和轻度认知障碍 (PD-MCI) 患者相比,患有SCD (PD-SCD) 的PD患者的微观结构性大脑变化.
- 探索这些微观结构变化与认知状态之间的关联.
- 为了确定潜在的成像生物标志物用于PD的认知分期.
主要方法:
- 多模式MRI用于68名PD患者 (PD-NC,PD-SCD,PD-MCI) 和27名健康对照 (HC).
- 分析包括基于通道的空间统计 (TBSS),骨架平均扩散率 (PSMD) 的峰值宽度和海马体子场细分.
- 评估了分数异构性 (FA) 和区域性缩.
主要成果:
- 在认知子组中,PSMD有显著的差异,与认知分数 (MoCA) 有负相关,这表明它在分期中的有用性.
- PD-MCI在多个白质道中显示了减少的FA;PD-SCD与HC相比,在FM主要道中减少了FA.
- 与PD-NC相比,在PD-SCD和PD-MCI组中观察到海马体子领域 (CA1,HATA) 的缩.
结论:
- 微观结构的改变,特别是在白质中,即使在帕金森病的主观认知衰退阶段也可以检测到.
- 作为一种敏感的生物标志物,PSMD显示出它对于区分PD的认知阶段具有前途.
- 白质变化可能在PD相关的认知投诉中发挥重要作用,强调早期检测的重要性.
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