区域性高铁沉积在大脑定量敏感度映射上与慢性病患者的认知能力下降相关
Yuan Li1, Yuhan Jiang1,2, Bingbing Gao1
1Department of Radiology, The First Affiliated Hospital of Dalian Medical University, No. 222 Zhongshan Road, Xigang District, Dalian, Liaoning, 116011, China.
Brain imaging and behavior
|February 10, 2025
概括
慢性病 (CKD) 患者,尤其是接受血液透析的患者,显示脑铁沉积增加. 这种铁积累与认知障碍和情绪障碍有关,突出了针对性评估的必要性.
科学领域:
- 神经科学是一个神经科学.
- 腎臟病學 (nephrology) 是一種醫學專業.
- 放射学 放射学是一门学科.
背景情况:
- 慢性病 (CKD) 与系统性并发症有关,包括潜在的神经效应.
- 大脑的铁沉积越来越被认为是神经功能障碍的一个因素.
- 定量敏感性测绘 (QSM) 提供了一种测量大脑中铁含量的方法.
研究的目的:
- 为了评估使用QSM的CKD患者灰质核铁沉积的变化.
- 分析脑铁水平与CKD患者认知功能之间的关系.
- 探索铁沉积对血液透析 (HD) 患者认知和情感福祉的影响.
主要方法:
- 预期招募53名CKD患者 (35名HD,18名非HD) 和43名健康对照 (HC).
- 对所有参与者进行了临床评估,神经心理测试和QSM扫描.
- 测量整个核的平均磁感应值 (MSV) 和体积 (MSVM,VM) 和高铁区域 (MSVRII,VRII).
主要成果:
- 与HC患者相比,HD患者在右红核 (RN) 中显示出更高的MSVM.
- 在三组中,在左尾状核 (CN),双边膜 (Put) 和右RN中观察到MSVRII的显著差异.
- 铁沉积在左 CN 与抑郁症相关;左 Put 和右 RN 铁沉积与延迟的回忆和定向能力相关.
结论:
- 慢性病患者,特别是高发性硬化症患者,脑铁沉积过多且不均.
- 区域高铁沉积评估提供了对铁的分布及其与认知功能障碍和情绪障碍的关联的见解.
- QSM是量化脑铁在CKD和理解其神经后果的一个有价值的工具.
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