精神疾病和大脑白质表现出遗传重叠,涉及发育和神经细胞生物学
Nadine Parker1, Weiqiu Cheng2, Guy F L Hindley2,3
1NORMENT, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway. nadine.parker@medisin.uio.no.
精神疾病如双相情感障碍,严重抑郁症和精神分裂症与大脑白质完整性有着共同的遗传联系. 这些发现表明,精神疾病中白质异常存在遗传基础.
科学领域:
- 神经遗传学 神经遗传学
- 精神病学遗传学 精神病学遗传学
- 神经成像遗传学 神经成像遗传学
背景情况:
- 精神疾病与白质完整性之间的表型关联得到了充分证实.
- 了解共享的遗传架构可以为这些关联提供机理性的见解.
研究的目的:
- 描述双相情感障碍 (BD),严重抑郁症 (MD) 和精神分裂症 (SZ) 与白质分数异构 (FA) 的共同遗传结构.
- 确定这些表型背后的共同遗传位置,以揭示生物基础.
主要方法:
- 利用全基因组关联研究 (GWAS) 的总结统计数据,用于BD,MD,SZ和白质FA.
- 分析了多遗传性,可发现性,遗传相关性,重叠变体和共享位置.
- 将共享的基因变异映射到基因上,并进行基因组丰富分析.
主要成果:
- 比平均FA,BD,MD和SZ显著多基因,并且在遗传上不那么容易被发现.
- 尽管基因相关性较弱,但在精神疾病和FA之间观察到特征影响变体和共享位置的实质性重叠.
- 共享变体涉及与神经发育,神经细胞类型,髓和细胞粘附相关的基因.
结论:
- 大脑白质异常与精神疾病的病理生理学之间存在着重要的遗传基础.
- 共享的基因位置突出显示了生物通路,包括神经发育和髓化,与精神疾病和白质完整性相关.
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