细胞巨乳病毒抗体水平与认知能力之间的关系取决于年龄和遗传风险
Michael Vacher1,2, Silvia Lee3,4, Patricia Price3
1CSIRO Health and Biosecurity, Australian E-Health Research Centre, Floreat, Australia. michael.vacher@csiro.au.
BMC neurology
|July 2, 2025
概括
人类细胞巨乳病毒 (CMV) 抗体可能会保护具有特定基因变异 (TNF-308小等位基因) 个体的认知能力,特别是当年轻且没有APOE ε4基因时. 高龄或APOE ε4携带可能会降低这种保护作用.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 人类细胞巨乳病毒 (CMV) 是一种广泛传播的病毒,在一生中持续存在.
- 虽然CMV与衰老相关的疾病有关,但它对认知表现的影响不一致.
- 遗传因素,如Apolipoprotein E (APOE) ε4和瘤坏死因子 (TNF),可能会影响CMV的影响.
研究的目的:
- 研究CMV抗体水平,认知表现和遗传因素 (APOE ε4,TNF-308) 之间的关系.
- 确定基因变异和年龄是否会改变CMV与认知功能之间的关联.
主要方法:
- 从澳大利亚成像,生物标志物和生活方式 (AIBL) 研究中,在419名老年人 (年龄为53.2-89.1岁) 中量化了CMV反应性抗体.
- 评估认知复合分数,大脑粉样蛋白-β (Aβ) 负担,以及APOE/TNF-308基因型.
- 采用双变量和多变量回归分析来研究相互作用.
主要成果:
- 在具有TNF-308小等位基因的参与者中,CMV抗体水平与Aβ负荷负相关,与认知有正相关,特别是那些没有APOE ε4.4的参与者.
- 认知能力随着年龄的增长而下降,而CMV抗体水平保持稳定.
- 在年轻的参与者 (<71.1岁) 中发现了TNF-308基因型和CMV抗体之间的显著相互作用,但在老年人中没有发现.
结论:
- 在TNF-308小等位基载体中,CMV抗体可能会提供认知保护,特别是在年轻人中.
- 这种保护作用可以被晚年或APOE ε4载体掩盖.
- 鉴定到的相互作用可能使以前关于CMV和TNF-308对认知的影响的研究中的相互矛盾的发现得以协调.
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