使用基因组结构方程建模,对行为抑制和物质使用 (障碍) 的基因组组件进行分区
Tanya B Horwitz1, Katerina Zorina-Lichtenwalter2, Daniel E Gustavson2
1Institute for Behavioral Genetics, University of Colorado Boulder, 1480 30th St., Boulder, CO, 80303, USA. tanya.horwitz@colorado.edu.
Behavior genetics
|July 9, 2024
概括
遗传研究揭示了物质使用障碍 (SUD),物质使用 (SUB) 和行为失禁 (BD) 特征之间的重大重叠. 大多数BD的遗传变异与SUB和SUD共享,表明外部化行为具有共同的遗传基础.
科学领域:
- 行为遗传学行为遗传学
- 精神病学遗传学 精神病学遗传学
- 定量遗传学 是一种定量遗传学.
背景情况:
- 外化行为,包括冒险和冲动,是复杂的特征.
- 药物使用 (SUB),药物使用障碍 (SUD) 和行为失禁 (BD) 是外部化行为的关键方面.
- 之前的研究表明,这些特征具有共同的遗传基础.
研究的目的:
- 为了研究SUB,SUD和BD特征之间的遗传共变性分区.
- 确定BD的遗传变异在多大程度上独立于SUB和SUD.
主要方法:
- 利用欧洲祖先全基因组关联研究 (GWAS) 对SUB,SUD和BD特征的统计数据.
- 为每个特征构建单因素测量模型.
- 应用相关因子模型和巧莱斯基分解来评估遗传共变性.
主要成果:
- 在SUD和SUB (rg = 0.803),BD和SUD (rg = 0.774),以及BD和SUB (rg = 0.778) 之间观察到高遗传相关性.
- 在最初的模型中,在计算了SUD和SUB之后,BD差异的33%仍然存在.
- 大多数遗传共变性是共享的,BD变异的一小部分独立于SUB和SUD.
结论:
- 外化行为遗传架构显示了SUB,SUD和BD之间存在大量的重叠.
- 行为失禁的遗传基础的很大一部分与物质使用和物质使用障碍共享.
- 需要进一步的研究来探索BD特定变异的特定遗传和分子相关物.
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