特定于性别的ALS遗传结构:女性保护作用的证据?
Maurizio Grassano1, Francesca Palumbo1, Gabriele Mora1
1Rita Levi Montalcini Department of Neuroscience, University of Turin, Turin, Italy.
Annals of neurology
|February 10, 2026
概括
患有肌缩侧面硬化症 (ALS) 的女性具有较高的罕见有害遗传变异负担,表明性别特异性遗传责任. 性别影响ALS基因的遗传风险不同,特别是TARDBP.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 流行病学 流行病学
背景情况:
- 肌缩侧面硬化症 (ALS) 在发病率和发病年龄方面表现出显著的性别差异.
- 在ALS中推动这些性别差异的潜在生物机制在很大程度上是未知的.
研究的目的:
- 为了调查异构侧面硬化症 (ALS) 的性别特异性遗传结构.
- 为了确定ALS相关基因内罕见变异负担的性别相关差异.
主要方法:
- 在意大利ALS队列 (1333例,755例对照) 上进行全基因组测序.
- 在ALS相关基因中对罕见变异进行了性别分层负担分析.
- 在AnswerALS队列中复制了关键发现,并检查了C9ORF72,SOD1和TARDBP的基因特异性性别比.
主要成果:
- 与对照组相比,ALS基因的罕见变异在女性ALS病例中显著丰富 (OR 5.47).
- 女性ALS患者比男性更频繁携带罕见的破坏性变体 (23.2%与18.3%),这一发现在AnswerALS队列中复制.
- 对TARDBP的基因水平分析显示,携带者中男性占主导地位,但女性的家族史率较高.
结论:
- 患有ALS的女性显示出较高的罕见有害变异的总体负担,这表明基因易感性与性别相关的差异.
- 性别对遗传风险的影响在不同的ALS相关基因中有所不同,TARDBP显示了不同的模式.
- 这些发现有助于了解ALS流行病学模式,并可能为发现与性别相关的保护机制提供信息.
相关概念视频
The Evidence for Evolution
48.4K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
48.4K
Sex-linked Disorders
109.2K
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
109.2K
Types of Genetic Transfer Between Organisms
31.0K
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
31.0K
Infertility in Females
4.9K
Female infertility is defined as the inability to conceive after a year of regular, unprotected intercourse and affects about 10–15% of couples worldwide. The primary cause of female infertility is ovulatory disorders, which hinder the release of eggs. These disorders can be classified as hypothalamic amenorrhea, polycystic ovarian syndrome (PCOS), premature ovarian failure, and hyperprolactinemic anovulation disorders.
Endometriosis, a condition characterized by abnormal growth of...
Endometriosis, a condition characterized by abnormal growth of...
4.9K
Genetics of Speciation
21.9K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
21.9K
External Female Genitals
35.1K
The vulva encompasses the external structures of the female reproductive system. At the forefront is the monpubis, a cushion of fatty tissue atop the pubic bone. Once puberty sets in, this area typically grows hair. Extending from just behind the mons pubis are the labia majora (labia = 'lips'; majora = 'larger'), which are larger skin fs olds coated with hair. Nestled within are the labia minora (labia = 'lips'; minora = 'smaller'), which are thinner, more...
35.1K


