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阿尔茨海默氏症成像联盟

Andrew P Burns1, Igor Fortel2, Liang Zhan3

  • 1University of Illinois at Chicago, Chicago, IL, USA.

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概括
此摘要是机器生成的。

随着时间的推移,女性APOE-ε4携带者表现出神经过度兴奋的增加,这表明阿尔茨海默病 (AD) 的风险增加. 这突显了在AD预防和治疗策略中性别和遗传学的重要性.

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 遗传学 是一个
  • 医疗成像医学成像

背景情况:

  • 过度的神经过度兴奋与早期认知能力下降和阿尔茨海默病 (AD) 的进展有关.
  • APOE-ε4基因型和女性性别可能会增加对过度兴奋的脆弱性,但纵向数据很少.
  • 恢复兴奋抑制 (E/I) 平衡是阿尔茨海默病的潜在治疗目标.

研究的目的:

  • 研究基于性别和APOE-ε4状态在认知不受损的老年人大脑激发抑制比 (EIR) 的纵向变化.
  • 为了确定E/I失调轨迹是否在女性和男性APOE-ε4载体和非载体之间有所不同.
  • 探索E / I平衡和早期认知衰退指标之间的关系.

主要方法:

  • 分析了106名老年人的多模式MRI数据 (静止状态fMRI,DTI),其中包括纵向扫描.
  • 应用一个具有结构连接性规范化的逆Ising模型来计算全脑EIR.
  • 线性混合建模以评估性别,APOE-ε4状态,年龄和时间对EIR轨迹的影响.

主要成果:

  • 一个显著的三向相互作用在女性APOE-ε4载体 (p=0.018) 中显示出一个升高的,过度兴奋的EIR轨迹.
  • 与女性非载体相比,女性ε4载体的EIR斜率较高 (p=0.042),即使调整了年龄,时间和粉样蛋白状况.
  • 在默认模式和边缘网络 (p=0.02) 中的女性观察到更高的基线刺激基调 (p=0.02).

结论:

  • 纵向数据支持女性APOE-ε4载体的高过敏性敏感性,强调AD的性别和遗传风险因素.
  • 情绪/情绪平衡是阿尔茨海默病的潜在生物标志物和治疗目标,像 levetiracetam 这样的干预措施显示出希望.
  • 需要对更大的队列进行进一步的研究,以确认特定于性别和基因型的E / I失调对痴呆风险和治疗疗效的影响.