美国印第安人的尿,头骨MRI和认知功能:强壮的心脏研究
Samuel C Williams1, Ana Navas-Acien2, Walter Goessler3
1Weill Cornell-Memorial Sloan Kettering-Rockefeller University Tri-Institutional MD-PhD Program, New York, NY, USA.
Environmental research
|January 22, 2025
概括
老美国印第安人的高 (Se) 水平与负面的大脑变化和认知功能下降有关. 公共卫生官员应该考虑这些环境风险,特别是对于高摄入量Se的弱势群体.
科学领域:
- 环境健康 环境健康
- 神经科学是一个神经科学.
- 流行病学 流行病学
背景情况:
- (Se) 是一种重要的微量元素,对生物功能至关重要,包括大脑血管健康.
- 升高的Se度可能是有害的,美洲印第安人患脑血管疾病的比例更高.
- 这项研究调查了Se水平与老年美洲印第安人的大脑健康之间的联系.
研究的目的:
- 评估尿液Se水平与老年美洲印第安人的大脑健康指标之间的关联.
- 确定Se暴露是否与结构性大脑变化和认知表现有关.
- 为了确定与脆弱人群中的Se摄入相关的潜在环境风险.
主要方法:
- 利用了来自强心研究的数据,这是美国印第安人的纵向队列.
- 分析了728名参与者 (65-95岁) 的尿液Se水平 (调整为肌素),脑部MRI和神经心理测试结果.
- 采用线性回归模型来评估关联,调整社会人口统计学因素和血管共同疾病.
主要成果:
- 尿液Se的增加与不良的大脑成像发现有关,包括异常的缩缩,心室扩大和白质过强度.
- 较高的Se水平独立地与语言流性和处理速度的表现下降有关.
- 在调整了社会人口结构,血管并发症,抑郁症和创伤性脑损伤后,关联仍然很重要.
结论:
- 尿液Se水平超过50-60微克Se/g肌因与老年美洲印第安人的不良大脑结构和认知功能有关.
- 这些发现凸显了脆弱人群中高摄入量Se的潜在环境风险.
- 流行病学证据支持公共卫生专业人员评估环境Se暴露风险.
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