基因降低的MTHFR活性可以防止多发性硬化症的发生
Iyas Daghlas1, John V Pluvinage1, Dipender Gill2
1UCSF Weill Institute for Neurosciences, Department of Neurology, University of California San Francisco, San Francisco, CA, USA.
Journal of neuroimmunology
|November 1, 2025
概括
MTHFR C677T变异与减少多发性硬化症 (MS) 风险有关,可能是由于叶酸代谢受损. 这种遗传因素似乎没有影响MS的严重程度.
科学领域:
- 遗传学和分子生物学
- 神经免疫学 神经免疫学
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 甲基基酸盐减少酶 (MTHFR) 对于叶酸代谢和同氨酸调节至关重要.
- 该MTHFR C677T变体损害了酶活性,提高了同类半氨酸水平.
- 以前的研究表明,MTHFR变异与神经系统疾病有关,但它们在多发性硬化症 (MS) 中的作用尚不清楚.
研究的目的:
- 调查MTHFR C677T变体与患MS的风险之间的关联.
- 检查MTHFR C677T变体与MS疾病严重程度之间的关系.
- 探索MTHFR功能与MS病变发生之间的潜在生物联系.
主要方法:
- 对MS风险 (43,069例) 和严重程度 (12,584例) 的遗传关联数据的元分析.
- 分析基因关联与同类氨酸水平 (1,210名参与者).
- 进行了敏感性分析,以解决潜在的遗传混问题.
主要成果:
- 在MTHFR C677T变体和降低的MS风险之间发现了统计学上显著的关联 (OR每等位基因=0.91,P<10^-14).
- 这种变异对多发性硬化症风险的影响在扩大到基因决定的homocysteine水平时是一致的 (OR = 0.73,P < 10^-14).
- 在MTHFR C677T变体和MS严重程度 (P = 0.92) 之间没有发现显著的关联.
结论:
- 这些发现表明,由C677T变体表明的受损MTHFR功能可能会提供对MS发展的保护.
- 这支持了一个新的生物学假设,将叶酸代谢与MS风险联系起来.
- 进一步的研究是有必要的,以了解机制和潜在的治疗应用.
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