在创伤性脑病综合征中灰质/白质边界的扩散变化
Tim L T Wiegand1,2, Lara Pankatz1,2, Hector Arciniega3,4
1Psychiatry Neuroimaging Laboratory, Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Journal of neurotrauma
|November 11, 2025
概括
在灰色/白色物质边界的扩散MRI显示,在患有创伤性脑病综合征 (TES) 的前足球运动员中,有望检测慢性创伤性脑病变 (CTE) 相关的病理. 这种成像技术可能有助于在一生中诊断CTE.
科学领域:
- 神经成像是一种神经成像.
- 神经病理学神经病理学
- 运动医学 运动医学
背景情况:
- 慢性创伤性脑病 (CTE) 是一种神经退行性疾病,与重复的头部冲击 (RHI) 有关.
- 目前,CTE诊断仅限于死后的神经病理学检查.
- 创伤性脑病症综合征 (TES) 是与CTE病理相关的临床表现.
研究的目的:
- 在具有RHI史和TES的个体中使用扩散MRI (dMRI) 调查灰质/白质 (GM/WM) 边界的微结构性质.
- 探索GM/WM边界的dMRI指标和TES的临床特征之间的关联.
- 检查GM/WM边界dMRI测量和脑脊液 (CSF) tau生物标志物之间的关系.
主要方法:
- 从165名男性前美国足球运动员那里收集了dMRI,TES诊断和CSF生物标志物.
- 在GM/WM边界和中央白质 (WM) 中测量了微分异性质 (FA).
- 统计分析包括TES协会的ANCOVA和CSF生物标志物协会的线性回归.
主要成果:
- 在GM/WM边界较高的FA与CTE病理,神经行为失调和功能依赖/痴呆症的确定性增加有关.
- 增加的GM / WM边界FA与高的CSFp-tau-181和p-tau-217水平相关.
- 在中央WM和TES诊断中没有发现FA之间的显著关联.
结论:
- 在GM/WM边界的dMRI可能有助于识别TES的个体中标志着tau病理的微结构变化.
- 这种方法显示出研究终身CTE相关神经退行症的潜力.
- 需要进一步的研究来验证dMRI指标,并确定诊断用途的临床切断值.
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