公共卫生 公共卫生
Puja Agarwal1, Alifiya Kapasi2, Sonal Agrawal1,3
1Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
MIND饮食与反应性小质细胞减少有关,这表明老年大脑中神经炎症较少. 这表明饮食模式可能通过调节大脑炎症来影响认知健康.
科学领域:
- 神经科学是一个神经科学.
- 营养科学 营养科学
- 老年学是指老年学的学科.
背景情况:
- 由反应性微质细胞驱动的神经炎症是阿尔茨海默病 (AD) 和与年龄相关的认知衰退的关键风险因素.
- 高脂肪饮食在动物模型中加剧了微质激活和认知障碍.
- 富含抗氧化剂的地中海-DASH干预神经退行性延迟 (MIND) 饮食与缓慢的认知衰退有关,但其对人类微质炎症的影响尚不清楚.
研究的目的:
- 研究坚持MIND饮食和抗氧化剂营养素摄入量与人类海马体中微质状况之间的关联.
- 在老龄化人口中探索饮食模式和神经炎症标志物之间的关系.
主要方法:
- 来自Rush记忆和衰老项目的237名尸检参与者的分析,重点关注海马微质和饮食数据.
- 使用基于细胞形态学的立体学量化总和反应性微质 (2-3阶段).
- 线性回归模型评估了MIND饮食得分和卡路里调整的抗氧化营养素 (油酸,维生素E) 与微质细胞计数的关联.
主要成果:
- 更高的MIND饮食得分与海马体中较少的反应性微质显著相关,这表明神经炎症减少 (p=0.045).
- 在MIND饮食得分和微质细胞总计数 (p=0.114) 之间没有发现显著的关联.
- 油酸摄入与激活的海马微质细胞 (p=0.03) 有负相关性,而维生素E表现出类似的趋势 (p=0.08).
结论:
- MIND饮食与人类海马体中微质炎症的减少有关.
- 通过饮食摄入油酸和潜在的维生素E可能在调节海马微质激活中发挥作用.
- 需要使用更大的样本大小进行进一步的研究来证实这些发现,并阐明衰老中的饮食-认知-炎症联系.
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