白质变化在右发性与左发性帕金森病的早期阶段
Xu Li1, Changlian Tan2, Sainan Cai2
1Department of Radiology, The Second Affiliated Hospital of Zunyi Medical University; Department of Radiology, the Second Xiangya Hospital, Central South University, Changsha, China.
Behavioural brain research
|February 22, 2026
概括
早期的右发性帕金森病 (RPD) 显示白质 (WM) 微观结构的变化,特别是在左半球,这表明髓损伤. 左侧发病的帕金森病 (LPD) 没有表现出这些特定的WM改变.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 生物医学工程 生物医学工程
背景情况:
- 帕金森病 (PD) 诊断通常基于运动症状,但早期神经影像标记对于理解疾病机制至关重要.
- 左发性PD (LPD) 和右发性PD (RPD) 可能代表不同的病理生理路径.
- 白物质 (WM) 完整性对大脑功能至关重要,可以使用扩散张力成像 (DTI) 来评估.
研究的目的:
- 为了研究早期LPD和RPD患者之间WM微结构的差异.
- 为了确定潜在的神经成像机制背后的RPD和LPD.
- 为了将WM的微观结构变化与PD患者的临床指标相关联.
主要方法:
- 从18名RPD患者,14名LPD患者和18名健康对照 (HC) 获得的扩散张力图像 (DTI) 数据.
- 扩散参数的计算:分数异构 (FA),平均扩散率 (MD),轴向扩散率 (AD) 和辐射扩散率 (RD).
- 用于对WM差异的群组比较和与临床分数的相关性分析的基于流程的空间统计 (TBSS).
主要成果:
- 与HC和LPD患者相比,RPD患者在体,关联纤维和冠状体辐射中显著增加了MD和RD.
- 在RPD患者中,WM变化在左半球更为明显.
- 在LPD患者和HC患者之间没有发现显著的WM差异;在RPD患者中,RD和UPDRS得分之间的趋势水平相关性.
结论:
- 早期的RPD与WM微观结构受损有关,可能表明髓损伤,主要在左半球.
- 在LPD患者中,没有出现这些特定的WM微观结构异常.
- 体,关联纤维和冠状辐射的变化可能在RPD的发病过程中发挥作用.
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