基础科学和病原发生学
Sohan Angelo A1, Piu A Das1, Abhishek Mensegere Lingegodwa2
1Center for Brain Research, Bangalore Urban, Karnataka, India.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
甲基四基叶酸减少酶 (MTHFR) 基因中的遗传变异与高水平的同类半氨酸有关. 一种内在的MTHFR变体 (1:11793135) 与老年印度队列中更高的同类氨酸水平显著相关.
科学领域:
- 遗传学 遗传学是一种遗传学.
- 生物化学 生物化学
- 老年学是一门学科.
背景情况:
- 甲基基酸盐还原酶 (MTHFR) 对于叶酸代谢和同氨酸调节至关重要.
- MTHFR基因变异与高水平的homocysteine有关,这是认知能力下降的危险因素.
- 塔塔长度老化研究 (TLSA) 队列被用于调查MTHFR基因变异.
研究的目的:
- 研究MTHFR基因及其附带区域的遗传变异.
- 为了确定MTHFR变异和老年印度人口的同型半氨酸水平之间的关联.
- 探索潜在的遗传倾向,以改变在衰老中的同类氨酸代谢.
主要方法:
- 在质量控制后,对TLSA队列中的376名参与者进行了基因型-表型分析.
- 使用PLINK v1.9.0进行分析,考虑年龄,性别,维生素B12和叶酸水平.
- 统计方法包括曼·惠特尼和奇方测试,用于人口和同等氨酸水平的比较.
主要成果:
- 在TLSA队列中 (N=696,平均年龄为73.6岁) 呈现出高的平均同类氨酸水平 (19.4μmol/L).
- 一种内在的MTHFR变体 (1:11793135) 与0.0213的等位基频率显示出与更高的同类半氨酸水平有显著的关联 (p=0.01867).
- 该分析根据年龄,性别,维生素B12和叶酸水平进行了调整.
结论:
- 在印度老年人群中,MTHFR变异1:1793135与高水平的同类氨酸水平之间发现了显著的关联.
- 这些发现表明,在老年人中,潜在的基因倾向导致同类氨酸代谢发生变化.
- 这项研究强调了对MTHFR多态性基因查和向干预措施以缓解认知衰退的重要性.
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