基础科学和病原发生学
Alexander M Kulminski1, Fan Feng1, Irina Kulminskaya1
1Social Science Research Institute, Duke University, Durham, NC, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
对阿尔茨海默病 (AD) 和糖尿病 (DM) 的遗传易感性显示出明显的性别差异. 全基因组关联研究揭示了在男性和女性中影响AD和DM风险的独特遗传位置,突出显示了遗传异质性的作用.
科学领域:
- 遗传学 遗传学 是一个
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
背景情况:
- 阿尔茨海默病 (AD) 影响女性的比例比男性高,但生存率并不能完全解释这种差异.
- 遗传因素对阿尔茨海默氏症的遗传性有很大影响,需要对阿尔茨海默氏症及其风险因素的性别特异性遗传影响进行研究.
- 了解AD和糖尿病 (DM) 易感性的性别差异可以阐明疾病机制.
研究的目的:
- 通过全基因组关联研究 (GWAS) 调查阿尔茨海默病 (AD) 和糖尿病 (DM) 的性别特异性遗传结构.
- 确定影响欧洲人口对AD和DM易感性的性别特异性遗传位置和类效应.
- 探索APOE基因在AD和DM的性别特异性风险中的作用.
主要方法:
- 在欧洲男性和女性中进行了全基因组关联研究 (GWAS) 和阿尔茨海默氏症和DM的多样性分析.
- 分析的大队伍:172,097名男性和204,904名女性为AD;165,287名男性和195,190名女性为DM.
- 利用与DM的强烈遗传关联来识别与AD的较弱关联,重点关注性别特异性影响.
主要成果:
- 在THADA和IGF2BP2.2等基因集群中确定了30个男性特异性的DM位点,对AD具有性作用.
- 在包括HNF1B和CDKN2B在内的基因集群中发现了16个女性特异性的DM位点,对AD具有性作用.
- 女性APOE ε4携带者有较高的AD风险 (β=1.29) 比男性 (β=1.12);APOE ε4在两性中都与DM有利相关,没有显著的性别差异.
结论:
- 对DM和AD的遗传易感性在男性中更为明显.
- APOE ε4对AD和DM的对抗性影响,以及性别特异性差异,强调了APOE相关的遗传异质在AD-DM风险中的重要性.
- 性别特定的遗传因素在对阿尔茨海默病和糖尿病的不同易感性方面发挥着关键作用.
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