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阿尔茨海默氏症成像联盟

Indira C Turney1, Benjamin D Huber2, Calen P Ryan2

  • 1National Institutes of Health / National Institute on Aging, Baltimore, MD, USA.

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概括
此摘要是机器生成的。

加快的生物衰老与白质超强度体积增加有关,这是大脑衰老的标志. 这种关联与较高的心血管疾病负担更为强烈,突出显示了大脑健康的潜在差异.

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科学领域:

  • 神经科学是一个神经科学.
  • 老年学是一门学科.
  • 公共卫生 公共卫生

背景情况:

  • 慢性压力加速生物衰老,特别是在边缘化人口中,增加阿尔茨海默病和相关痴呆症 (AD/ADRD) 的风险.
  • 中年大脑衰老涉及结构性变化,如白质高强度 (WMH) 体积和皮质厚度降低 (CT).
  • 了解生物衰老,大脑标志物和社会决定因素之间的联系对于解决健康差异至关重要.

研究的目的:

  • 研究生物衰老加速 (GrimAge) 和与ADRD相关的MRI标记 (WMH体积,CT) 之间的关联.
  • 在一个种族/种族多样化的中年人群中检查这些关联.
  • 探索教育和心血管疾病 (CVD) 负担的缓解效应.

主要方法:

  • 研究了681名不同的成年人 (45-65岁) 来自阿尔茨海默病种族和种族差异后代研究.
  • 使用线性回归来评估生物年龄加速和MRI结果之间的关系,调整共变量.
  • 根据种族/种族进行了分层分析,并测试了与教育和心血管疾病负担的相互作用.

主要成果:

  • 加快的生物衰老与WMH体积增加相关 (β=0.014),但不是CT.
  • 生物年龄和WMH之间的关联被较大的心血管疾病负担 (β=0.028) 放大.
  • 高等教育和白人,拉丁裔参与者显示生物学年龄加速较小;协会在黑人和拉丁裔个人中最强.

结论:

  • 加快的生物衰老与WMH体积增加有关,可能导致大脑健康差异.
  • 心血管负担加剧了加速衰老和WMH之间的联系.
  • 需要解决社会文化和生物因素的多方面的干预措施,以减少大脑健康差异.