循环抗氧化营养素和中年人的大脑年龄 成年人
Mason J Lower1, Mia K DeCataldo, Thomas E Kraynak
1Department of Neuroscience, University of Pittsburgh, A210 Langley Hall Langley Hall, Pittsburgh, PA 15260, United States (Lower); Department of Psychology, University of Pittsburgh, Sennott Square 3417, 210 S. Bouquet Street, Pittsburgh, PA 15260, United States (DeCataldo, Gianaros); Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA 15260, United States (Kraynak).
Biopsychosocial science and medicine
|May 13, 2025
概括
中年成年人中较高的β-胡卜素水平与较年轻的大脑年龄有关,这表明这种抗氧化剂可能会减缓大脑的生物衰老. 这一发现对于理解神经保护和预防认知衰退至关重要.
科学领域:
- 神经科学是一个神经科学.
- 营养科学 营养科学
- 老年学是一门学科.
背景情况:
- 由于人口老龄化,阿尔茨海默氏症 (AD) 和相关的痴呆症正在引起越来越多的公共卫生问题.
- 抗氧化营养素,如β-胡卜素,显示出减轻与年龄相关的神经认知衰退的潜力.
- 抗氧化剂的神经保护机制,特别是它们对大脑衰老指标的影响,需要进一步研究.
研究的目的:
- 为了研究循环抗氧化剂营养水平与大脑年龄之间的关联,神经成像是生物大脑衰老的标志物.
- 为了确定β-胡卜素和其他营养素是否影响中年成人大脑衰老的结构指标.
主要方法:
- 结构磁共振成像 (MRI) 和血营养分析对132名中年成人 (年龄为30.4~50.8岁) 进行.
- 测量了β-胡卜素,视网醇,玛-托科菲罗尔,α-托科菲罗尔和β-克里普托桑丁的血度.
- 通过使用经过训练以根据大脑形态学预测时间年龄的机器学习模型来估计大脑年龄.
主要成果:
- 更高的循环β-胡卜素水平与更年轻的预测大脑年龄显著相关 (β = -0.23,P = 0.006),即使经过多个共同变量调整.
- 在其他测量营养素和大脑年龄之间没有发现统计学意义上的关联.
- 在控制体质指数,皮质体积和皮质厚度后,这些结果保持一致.
结论:
- 循环中的β-胡卜素水平可能与缓慢的生物大脑衰老有关,如神经成像所示.
- 饮食中摄入的β-胡卜素可以起到维持大脑健康的作用,并可能延迟与年龄有关的大脑变化.
- 需要进一步的研究来证实这些发现,并阐明贝塔胡卜素神经保护作用的潜在机制.
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