在抑郁症的认知训练干预期间,与认知变化相关的表观遗传修饰
Evelien Van Assche1, Christa Hohoff1, Johannes Zang1
1Department of Psychiatry, University of Münster, Münster, Germany.
概括
基因甲基化显示出作为跟踪认知改善的生物标志物有前途,在接受认知干预的抑郁症患者中. 这项全表观基因组关联研究确定了治疗反应的潜在早期标志.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 精神病学是一个精神病学.
背景情况:
- 基因甲基化作为动态过程的生物标志物,如症状改善.
- 表观遗传学标记可以表明接受认知干预的个体的早期认知改善.
- 这项研究调查了抑郁症患者的表观遗传学标记,包括认知功能障碍和没有认知功能障碍的患者.
研究的目的:
- 对患有抑郁症认知功能障碍的患者进行第一个全表观基因组关联研究 (EWAS).
- 为了比较认知功能障碍和没有认知功能障碍的患者之间的表观基因状态.
- 为了确定认知干预后认知改善的早期表观遗传特征.
主要方法:
- 利用了一项随机对照试验的数据,将个性化认知干预与标准治疗进行比较.
- 使用Illumina Infinium MethylationEPIC 850k BeadChip从基线和8周收集的血液样本中分析了DNA甲基化.
- 用于数据清理,质量控制和差异甲基化分析的RnBeads包,并对相关共变量进行校正.
主要成果:
- 没有发现全基因组显著的CpG来比较在基线或8周前有或没有认知障碍的患者.
- 在基线时最显著的CpG是在调节区域 (cg10962945) 中,在8周后,它是在与BDNF通路相关的NTRK2基因 (cg13620631) 中.
- 纵向分析显示,在改善认知功能和8周横截面分析之间,65个重叠的CpG.
结论:
- 基因甲基化是检测抑郁症认知干预的早期治疗反应的合适生物标志物.
- 该研究区分了生物特征和认知功能的状态标志物.
- 识别的CpG位置与与抑郁症治疗和认知相关的已知途径保持一致,尽管没有达到全基因组意义.
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