α-Synuclein病理与Tau积累的性别特异性关联
Elijah Mak1, Angela J Fought2, Heather J Wiste2
1Department of Radiology, Mayo Clinic, Rochester, Minnesota.
JAMA network open
|March 4, 2026
概括
阿尔法-同核素 (α-synuclein) 阳性比男性更能加速阿尔茨海默病和相关痴呆症的女性的陶积累. 这一发现凸显了性别特异性考虑对生物标志物解释和临床试验设计的重要性.
科学领域:
- 神经学 神经学
- 神经科学是一个神经科学.
- 生物标志物 生物标志物
背景情况:
- 性差异影响阿尔茨海默氏症和相关痴呆症 (ADRD) 的进展,女性表现出增加的tau负担和更快的认知衰退.
- 在ADRD中这些基于性别的差异中,α-synuclein (α-synuclein) 共病学的作用尚不清楚.
研究的目的:
- 调查通过脑脊液种子放大试验 (SAA) 检测到的α-synuclein (α-synuclein) 阳性是否与阿尔茨海默病连续体中女性与男性的tau积累有关.
主要方法:
- 一项队列研究利用了来自阿尔茨海默病神经成像计划 (ADNI) 的纵向定子发射断层扫描 (PET) 数据.
- 参与者根据脑脊液 (CSF) α-synuclein SAA状态 (阳性或阴性) 和性别进行了分层.
- 采用线性混合效应模型来分析SAA状态,性别和tau积累时间之间的相互作用,并根据相关共变量进行调整.
主要成果:
- 在SAA状态,性别和tau积累时间 (P < .001) 之间观察到显著的相互作用.
- 与其他组相比,SAA阳性结果的女性显示出最快的tau积累 (每年0.066SUVr).
- 样本大小计算表明,针对认知障碍个体的病理的临床试验需要较少的SAA阳性女性比SAA阴性女性来检测治疗效应.
结论:
- 阿尔法-同核素 (α-synuclein) 副病理与与ADRD男性相比,女性的tau积累加速有关.
- 这些结果强调了对α-synuclein生物标志物的性别特异性解释的需要.
- 这些发现可以为未来对阿尔茨海默氏症和相关痴呆症的临床试验的设计提供信息.
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