公共卫生 公共卫生
Emma Nolan1,2, Ashley Sawyer1, Derek B Archer1,3,4
1Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical Center, Nashville, TN, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
对胰岛素抵抗 (IR) 的遗传倾向与更好的记忆性能和更慢的认知衰退有关. 然而,这种关联受到伴随性疾病和特定遗传因素的影响,这表明存在复杂的关系.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 代谢健康 代谢健康
背景情况:
- 胰岛素抵抗 (IR) 与认知能力下降和痴呆症风险有关.
- 多基因风险评分 (PRS) 可以确定对IR的遗传倾向.
- 了解IR对记忆的影响的遗传责任对于预防痴呆症至关重要.
研究的目的:
- 调查IR遗传责任与记忆表现之间的关联.
- 检查IR遗传风险和记忆之间的横截面和纵向关系.
- 探索共发病症和APOE基因型如何改变这种关联.
主要方法:
- 通过从全基因组关联研究数据中使用TG:HDL-C比率来构建IR的多基因风险评分 (PRS).
- 该PRS应用于国家阿尔茨海默氏症协调中心 (NACC) 队列.
- 线性回归和混合效应模型分析了基线和纵向记忆,调整共变量并执行灵敏度分析.
主要成果:
- 对IR (TG:HDL-C PRS) 的更高遗传风险与更好的基线记忆相关.
- 增加IR的遗传风险与较慢的纵向记忆衰退相关.
- 关联因伴随性疾病和APOE-ɛ4/ɛ2非载体身份而改变,当伴随性疾病被排除在外时,效应大小降低.
结论:
- 由TG:HDL-C PRS表示的对IR的遗传责任,显示出与更好的记忆力和更慢的衰退具有适度但显著的关联.
- 同病症和APOE基因型显著改变了IR遗传风险和记忆之间的关系.
- 需要对更大的队列进行进一步的研究,以阐明IR遗传学,新陈代谢和认知健康的复杂相互作用.
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