习惯性咖啡消费和老年人痴呆风险:由CYP1A2多态度调节
Sophie Lefèvre-Arbogast1, Catherine Helmer2, Claudine Berr3
1University of Bordeaux, Inserm, Bordeaux Population Health Research Center, UMR 1219, 146 Rue Léo-Saignat, Bordeaux Cedex, 33076, France. Sophie.Lefevre-Arbogast@u-bordeaux.fr.
European journal of epidemiology
|October 31, 2023
概括
咖啡消费可能会降低痴呆风险,但这种益处与遗传因素有关. 咖啡因代谢较慢的个体 (CYP1A2 C等位基因携带者) 显示,随着咖啡摄入量增加,痴呆风险显著降低.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 流行病学 流行病学
背景情况:
- 更高的咖啡消费与更低的痴呆风险有关,但研究结果不一致.
- 遗传变异,特别是影响咖啡因代谢的CYP1A2基因,可能会解释这些差异.
- 了解这些基因调节对于澄清咖啡的神经保护潜力至关重要.
研究的目的:
- 调查咖啡消费与痴呆风险之间的关联,考虑到CYP1A2遗传多态性.
- 确定受CYP1A2变体影响的咖啡因代谢率是否会改变咖啡对痴呆和阿尔茨海默病 (AD) 风险的影响.
主要方法:
- 利用了来自三城研究的5964名参与者的数据,平均年龄为74岁,在基线没有痴呆症.
- 采用考克斯的比例风险模型来分析每日咖啡摄入量,CYP1A2多态化 (rs762551,rs2472304,rs2472297,rs2470893) 和痴呆/AD发病率在平均9年随访期间之间的关系.
- 检查了咖啡消费与特定CYP1A2多态体之间的相互作用,特别是rs762551,以确定基于咖啡因代谢速度的差异效应.
主要成果:
- 在咖啡消费和CYP1A2 rs762551多态性之间发现了显著的相互作用 (p=0.034).
- 咖啡摄入量与降低痴呆风险的线性关联仅在"较慢"的咖啡因代谢者 (C等位基载体) 中.
- 在"更快"的代谢者 (非载体) 中,没有观察到显著的关联,超过3杯/天的风险增加趋势. 具体来说,≥4杯/天与较慢代谢器 (HR 0.45) 的风险降低有关,但较快代谢器 (HR 1.32) 的风险增加.
结论:
- 咖啡对痴呆症的神经保护作用并不普遍,并且受到CYP1A2基因型的显著调节.
- 具有较慢咖啡因代谢的遗传倾向的个体可能会从更高的咖啡消费中受益,从而降低痴呆风险.
- 这些发现凸显了在针对咖啡摄入量和痴呆症预防策略的个性化建议中考虑遗传因素的重要性.
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