大脑小叶横向区域的体积变化:年龄和性别对健康和神经系统疾病的影响
Farshid Ghiyamihoor1,2, Payam Peymani3, Jarrad Perron4
1Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
Human brain mapping
|April 17, 2025
概括
小脑体积随着年龄的增长而减少,特别是在中央区域,性别在各种神经疾病中不同地影响这种下降. 这项研究揭示了对大脑衰老和疾病的关键见解.
科学领域:
- 神经成像是一种神经成像.
- 神经科学是一个神经科学.
- 老年学是一门学科.
背景情况:
- 大脑小脑衰老模式及其与神经系统疾病的联系尚未完全理解.
- 小脑的功能分区 (横向区域) 具有独特的衰老特征.
- 关于大脑衰老的性别差异,特别是在小脑中,需要进一步研究.
研究的目的:
- 为了研究年龄和性别对大脑体积及其横向区域的影响.
- 为了确定健康个体和神经系统疾病患者之间小脑衰老的差异.
- 开发一个框架来估计小脑年龄作为健康指标.
主要方法:
- 利用了6个数据集中的45,000多名参与者的MRI数据.
- 分析了小脑,横带和叶片的总体积.
- 开发并应用了一个用于估计小脑年龄的框架.
主要成果:
- 在所有横向区域中观察到显著的年龄相关小脑体积减少.
- 中部区域 (第六和第七叶片) 的健康和疾病都出现了最严重的下降.
- 性差异很突出:男性在大多数疾病中比女性更快地表现出与年龄相关的体积损失,除了精神分裂症和可卡因使用障碍.
- 神经疾病 (MCI,AD,PD,SZ) 呈现出区域大脑缩的明显模式.
- 小脑年龄估计框架将健康人与神经病患者区分开来.
结论:
- 小脑体积分析,特别是横向区域的体积分析,有可能成为神经退行性和神经精神疾病的生物标志物.
- 中部区域特别容易受到与年龄相关的缩.
- 了解小脑衰老的性别特异性模式对于解释神经成像在健康和疾病方面的发现至关重要.
- 开发的小脑年龄估计框架为老化和疾病中的小脑病原体提供了新的见解.
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