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Updated: Jun 16, 2025

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嗅觉和认知功能测试得分与海马和杏仁灰质体积的关联:一个横截面研究
Shuichi Sato1, Takao Imaeda2, Shunji Mugikura3,4,5,6
1Toyota Central Research and Development Laboratories, Inc., Nagakute, 480-1192, Japan. shuichi-sato@mosk.tytlabs.co.jp.
Scientific reports
|August 19, 2024
概括
嗅觉功能测试可以检测到像海马体和杏仁体这样的记忆区域的脑缩,即使在年轻的成年人中也是如此. 这些发现表明,嗅觉测试是与认知评估一起评估大脑健康的有价值工具.
科学领域:
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
- 医疗成像医学成像
背景情况:
- 认知功能测试可能无法完全捕捉大脑缩,特别是在与记忆相关的区域.
- 需要包括不同年龄组在内的基于人口的研究,以探索大脑健康的新生物标志物.
研究的目的:
- 为了研究嗅觉功能测试得分与记忆相关大脑区域的灰质体积 (GMVs) 之间的关联.
- 为了确定嗅觉测试是否可以识别标准认知评估无法检测到的脑缩.
- 通过广泛的年龄范围 (31-91岁) 检查这些关联.
主要方法:
- 利用了来自1444名参与者的一项基于人口的研究的数据.
- 评估嗅觉功能,使用高分辨率测试,少有气味.
- 使用神经成像测量海马体,杏仁体,副海马体和嗅觉皮层的GMV.
- 雇佣回归分析,控制年龄,性别,教育,吸烟和认知分数 (蒙特利尔认知评估-日文版).
主要成果:
- 嗅觉测试得分与左和右海马和左桃体的GMV有显著的相关性,即使在调整认知得分后也是如此.
- 在老年人 (≥65岁) 中,嗅觉得分和右桃体GMV之间观察到显著的关系.
- 在应用本杰明尼-霍赫伯格多重测试校正后,这些发现仍然具有意义.
结论:
- 嗅觉功能测试对海马和杏仁体的缩很敏感.
- 嗅觉测试与认知评估相结合,可以有效地识别大脑结构变化,特别是在老年人中.
- 嗅觉测试为评估大脑健康和检测神经退行早期迹象提供了一种有价值的非侵入性方法.
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