在2型糖尿病中,海马体子区域的异常静止状态功能连接性与2型糖尿病相关的认知衰退有关
Lin Yao1, Meng-Yuan Li1, Kang-Cheng Wang2
1Institute of Acupuncture and Massage, Northeast Asian Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China.
Frontiers in psychiatry
|October 8, 2024
概括
2型糖尿病与大脑变化和炎症有关,即使没有认知能力下降. 2型糖尿病的认知衰退显示出特定的大脑连接问题,可能涉及前.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 医疗成像医学成像
背景情况:
- 2型糖尿病 (T2DM) 与炎症增加和大脑功能网络的改变有关,影响学习,记忆和执行功能等认知功能.
- 海马是一个关键的大脑区域,与记忆障碍有关,在T2DM中经常表现出连接异常.
- 2型糖尿病相关认知衰退 (T2DACD) 是一个显著的进展,需要对其潜在机制进行调查.
研究的目的:
- 在T2DACD患者的海马子区域中调查外周炎症标志物和静止状态功能连接 (RSFC) 异常.
- 为了比较T2DM,T2DACD和健康对照 (HC) 患者之间的这些发现.
- 探索认知表现和RSFC之间的相关性,并评估RSFC变化的诊断潜力.
主要方法:
- 一个研究队列包括16名T2DM患者,16名T2DACD患者和25名HC患者.
- 评估了认知表现,血清炎症因子 (IL-6,IL-10,TNF-α) 和静止状态功能磁共振成像 (rs-fMRI).
- RSFC分析集中在海马亚区域,并进行了相关性和接收器操作特征 (ROC) 分析.
主要成果:
- 与T2DM患者不同,T2DACD患者的认知能力下降,尽管这两组患者的IL-6增加.
- T2DACD患者在左前海马和左前中心/角旋转之间表现出RSFC异常.
- 在T2DM和T2DACD患者中观察到显著的RSFC变化,涉及各种海马子区域和其他大脑区域,包括前,左后海马-前RSFC与T2DACD的认知表现之间有显著的相关性.
结论:
- T2DACD的特点是注意力抑制和工作记忆受损,炎症反应升高,并破坏海马与默认模式和感觉运动网络的连接.
- 虽然T2DM显示炎症增加和海马体RSFC异常没有显著的认知衰退,左前可能在T2DM到T2DACD的进展中至关重要.
- 这些发现为使用神经成像和炎症标志物早期诊断T2DACD提供了潜在的基础.
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