听力困难与成像衍生的表型的听力困难的pleiotropy中的性别差异:一个大脑范围的调查调查
Jun He1, Brenda Cabrera-Mendoza1,2, Flavio De Angelis1
1Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06510, USA.
Brain : a journal of neurology
|March 8, 2024
概括
遗传因素通过影响大脑结构和功能来影响听力困难 (HD),并观察到显著的性别差异. 这项研究将特定的大脑成像现象类型通过类基因机制与HD倾向联系起来.
科学领域:
- 神经遗传学 神经遗传学
- 听觉神经科学 听觉神经科学
- 医学成像遗传学 医学成像遗传学
背景情况:
- 听力障碍 (HD) 是老年人群的重大健康问题.
- 虽然已知外周听力系统的变化,但与大脑结构和功能的遗传联系也可能影响HD.
- 了解这些遗传类型对于识别疾病风险因素至关重要.
研究的目的:
- 研究听力障碍 (HD) 和脑成像衍生的表型 (IDP) 之间的类遗传关系.
- 确定与HD遗传相关的特定大脑结构和功能.
- 探索这些关联中的潜在因果关系和性别差异.
主要方法:
- 利用了大规模的全基因组关联研究 (GWAS) 的HD数据和MRI中的3935个大脑IDP.
- 采用了遗传相关性,潜在因果变量,孟德尔随机化和多变量回归分析.
- 进行了局部遗传相关性和多特征共同定位分析,以确定共享的遗传区域.
主要成果:
- 发现HD和120名境内流离失所者之间的广泛遗传相关性,女性为89,男性为89,总共为171人.
- 证实了7个IDP (例如血管体积,海马体积,视觉皮层体积) 对HD的因果关系,反之亦然,使用门德尔随机化.
- 确定了13个类区域和一个特定的变体 (rs13026575),与HD,视觉皮层体积和SPTBN1调节有关,特别是在女性身上.
结论:
- 大脑的结构和功能与听力障碍有遗传联系.
- 这些遗传形,包括因果关系,有助于HD倾向,具有显著的性别差异.
- 共同的遗传调节机制可能是大脑表型和HD之间观察到的关联的基础.
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