相关实验视频
Updated: May 24, 2025

07:33
Noninvasive, High-throughput Determination of Sleep Duration in Rodents
Published on: April 18, 2018
7.7K
睡眠特征因果关系影响表观遗传年龄加速:孟德尔的随机化研究.
Wen Zhao1, Shiyao Yu1, Yan Xu1
1The Second School of Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China.
Scientific reports
|March 3, 2025
概括
研究睡眠障碍和表观遗传衰老,这项研究发现失眠可能通过GrimAge时钟加速衰老. 早期睡眠障碍干预可能会影响衰老和相关疾病.
科学领域:
- 遗传学 遗传学 是一个
- 时间生物学 时间生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 睡眠障碍 (SDs) 在老年人中很普遍.
- 测量DNA甲基化 (DNAm) 的表观遗传时钟准确预测生物衰老,并与与年龄相关的疾病有关.
研究的目的:
- 探索睡眠特征和表观遗传钟测量之间的因果关系.
- 使用门德尔的随机化 (MR) 来研究这些关系.
主要方法:
- 对表观遗传时钟 (HannumAge,IEAA,PhenoAge,GrimAge) 和睡眠特征的全基因组关联研究 (GWAS) 数据来自大型生物库 (UKB,23andMe,Finngen).
- 多种MR方法 (IVW,MR-Egger,WM等) 的使用. 被用于评估因果关系.
- 进行了严格的质量控制分析.
主要成果:
- 自我报告的失眠症显示,根据GrimAge时钟的测量,与加速衰老的潜在因果关系.
- GrimAge加速与自我报告的失眠有轻微的反向关联.
- 表观遗传时钟,特别是PhenoAge和GrimAge,对睡眠特征的影响很弱.
结论:
- 研究结果表明,失眠和表观遗传衰老之间存在潜在的双向关系.
- 对睡眠障碍的早期干预可能是缓解衰老和相关疾病的策略.
- 需要进一步的研究来揭示潜在的生物机制.
相关概念视频
Epigenetic Regulation
3.0K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.0K
Gene-Environment Interactions
235
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
235
Background and Environment Affect Phenotype
6.4K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.4K
Human Genetics
516
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
516
Epistasis Analysis
4.9K
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
4.9K
Inheritance
327
Gregor Mendel's pioneering work on the principles of inheritance fundamentally transformed our understanding of how traits are transmitted from generation to generation. His experiments with pea plants laid the groundwork for the discovery of genes, discrete units within organisms that control heredity.
Each gene exists in pairs, and the combination of these genes from both parents forms an individual's genotype. This genotype is a blueprint of potential traits. Examples of genotype...
Each gene exists in pairs, and the combination of these genes from both parents forms an individual's genotype. This genotype is a blueprint of potential traits. Examples of genotype...
327

