Genetic variation of oxidative phosphorylation genes in stroke and Alzheimer's disease.

Genetic variation of oxidative phosphorylation genes in stroke and Alzheimer's disease.
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DOI:
10.1016/j.neurobiolaging.2014.01.141
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发表时间:
2014-08
影响因子:
4.2
通讯作者:
Alzheimer's disease Neuroimaging Initiative (ADNI)
Alzheimer's disease Neuroimaging Initiative (ADNI)
中科院分区:
医学2区
文献类型:
--
作者:
Biffi A;Sabuncu MR;Desikan RS;Schmansky N;Salat DH;Rosand J;Anderson CD;Alzheimer's disease Neuroimaging Initiative (ADNI)

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先前的研究表明氧化磷酸化 (OXPHOS) 的改变与阿尔茨海默病 (AD) 的发展有关。我们试图测试 OXPHOS 基因内的遗传变异是否会增加 AD 风险。我们首先使用基因集富集分析来识别关联,然后应用先前复制的中风遗传风险评分来确定中风和 AD 之间是否存在 OXPHOS 遗传重叠。基因集富集分析确定了 OXPHOS 基因变异与 AD 与对照状态之间的关联 (p = 0.012)。从认知正常对照到轻度认知障碍的转变也与 OXPHOS 基因组相关 (p = 0.045)。子集分析表明与复合物 I 基因相关(p < 0.05),但与复合物 II-V 无关。在神经影像学测量中,海马体积和内嗅皮层厚度与 OXPHOS 基因相关(所有 p < 0.025)。中风遗传风险评分与临床状态、基线和纵向影像测量相关(p < 0.05)。 OXPHOS 遗传变异影响 AD 的临床状态和神经影像中间体。与中风相关的 OXPHOS 基因变异也与 AD 进展有关。需要进一步的研究来探索这些 OXPHOS 变体的功能后果。
Previous research implicates alterations in oxidative phosphorylation (OXPHOS) in the development of Alzheimer’s disease (AD). We sought to test whether genetic variants within OXPHOS genes increase the risk of AD. We first used gene-set enrichment analysis to identify associations, and then applied a previously replicated stroke genetic risk score to determine if OXPHOS genetic overlap exists between stroke and AD. Gene-set enrichment analysis identified associations between variation in OXPHOS genes and AD versus control status (p = 0.012). Conversion from cognitively normal controls to mild cognitive impairment was also associated with the OXPHOS gene-set (p = 0.045). Subset analyses demonstrated association for complex I genes (p < 0.05), but not for complexes II–V. Among neuroimaging measures, hippocampal volume and entorhinal cortex thickness were associated with OXPHOS genes (all p < 0.025). The stroke genetic risk score demonstrated association with clinical status, baseline and longitudinal imaging measures (p < 0.05). OXPHOS genetic variation influences clinical status and neuroimaging intermediates of AD. OXPHOS genetic variants associated with stroke are also linked to AD progression. Further studies are needed to explore functional consequences of these OXPHOS variants.
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