欧米茄-3脂肪酸,认知和大脑体积在老年人中
Spencer Loong1, Samuel Barnes2, Nicole M Gatto3
1Department of Psychology, School of Behavioral Health, Loma Linda University, Loma Linda, CA 92350, USA.
Brain sciences
|September 28, 2023
概括
较高的omega-3脂肪酸 (FA) 含量,包括eicosapentaenoic acid (EPA) 和docosahexaenoic acid (DHA),与老年人的更好的大脑健康有关. 这项研究发现omega-3脂肪酸与改善记忆力,处理速度和大脑结构之间的关联.
科学领域:
- 营养神经科学 营养神经科学
- 老年学是一门学科.
- 神经成像是一种神经成像.
背景情况:
- 全球老年人口正在迅速扩大,这突显了在衰老中维持认知功能和大脑健康的策略的需要.
- 富含omega-3多不和脂肪酸 (omega-3 FAs) 的健康饮食,如eicosapentaenoic acid (EPA) 和docosahexaenoic acid (DHA),越来越多地被认为具有潜在的认知益处.
研究的目的:
- 研究健康老年人的omega-3FA水平与认知表现之间的关联.
- 探索omega-3FA水平与大脑结构测量,包括大脑体积和皮层厚度之间的关系.
主要方法:
- 一组40名健康,认知正常的老年人 (平均年龄76.3岁) 接受了神经认知测试,为omega-3FA分析抽取血液,以及结构磁共振成像 (MRI).
- 进行了统计分析,以将omega-3FA水平 (EPA,DHA和整体omega-3指数) 与认知测试分数和MRI衍生的大脑体积相关联.
主要成果:
- 较高的EPA水平和整体omega-3指数显著与延迟回忆和处理速度的改善有关.
- EPA,DHA和omega-3指数显示出与总白质体积的显著相关性.
- 特定的大脑区域,包括脑内皮层,前极和白质,与更好的延迟记忆回忆有关.
结论:
- 在健康的老年人中,高水平的omega-3FA与增强的认知功能有关,特别是记忆和处理速度.
- 增加的omega-3FA状态与更大的总白质体积和内腔皮层厚度相关,这表明对大脑健康有结构性的益处.
- 这些发现支持omega-3脂肪酸在维持老化过程中大脑结构和认知功能的潜在作用.
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