在2型糖尿病中,基因表达和改变的静止状态功能网络之间的关联
Yang Zhang1, Xin Du1, Wen Qin1
1Department of Medical Imaging and Tianjin Key Laboratory of Functional Imaging, Tianjin Medical University General Hospital, Tianjin, China.
Frontiers in aging neuroscience
|December 14, 2023
概括
2型糖尿病 (T2DM) 加快了大脑的衰老. 这项研究发现T2DM患者的大脑功能连接 (FC) 发生变化,与特定的基因路径有关,这表明T2DM相关的认知变化存在遗传基础.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 2型糖尿病 (T2DM) 是一种与加速大脑衰老和认知衰退相关的代谢障碍.
- 导致T2DM相关的大脑功能变化的确切机制尚不清楚.
研究的目的:
- 与健康对照组 (HCs) 相比,调查T2DM患者大脑中的功能连接 (FC) 差异.
- 探索大脑FC变化与T2DM中的基因表达模式之间的关系.
- 确定与T2DM相关的大脑变化背后的生物学途径和过程.
主要方法:
- 休息状态功能磁共振成像 (fMRI) 数据从99名T2DM患者和109名HC患者获得.
- 使用独立组件分析 (ICA) 来识别静止状态功能网络 (RSN).
- 部分最小平方 (PLS) 回归分析了基因表达 (艾伦人类大脑图谱) 和RSN内的群际FC差异之间的关联,随后进行了途径丰富分析.
主要成果:
- T2DM患者在前关节网络 (PCUN) 和背部注意网络 (DAN) 中显著增加了FC,特别是涉及中回和前关节.
- 在PCUN内部的FC变化与与通道,TrkB-Rac1信号传递和突触功能相关的基因表达有关.
结论:
- 这项研究建立了功能连接和T2DM大脑中的分子变化之间的联系.
- 这些发现表明,在T2DM中观察到的大脑功能变化的潜在遗传基础.
- 这项研究为T2DM相关的神经和认知障碍的生物学基础提供了新的见解.
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