成年神经组织的性别依赖的可塑性,以应对损伤
Marina Recatalà-Martinez1, Manel Bosch2, Pedro Gaspar3
1Departament de Genètica, Microbiologia i Estadística, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain.
Development (Cambridge, England)
|January 29, 2026
概括
雌性果在受损后在肠道组织中表现出神经可塑性,这种反应在雄性中不存在. 这种由活性氧物种 (ROS) 影响的性别特异性生长,有助于肠道功能和生存.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 胃肠病学 胃肠病学
背景情况:
- 成人的神经可塑性有助于在损伤后修复电路,但机制和性别差异仍然不清楚.
- 肠道神经系统 (ENS) 提供了一个研究神经可塑性和性别特定恢复的模型.
- 了解神经可塑性对于解决神经损伤和功能恢复至关重要.
研究的目的:
- 使用肠模型研究成年神经可塑性的机制和性别差异.
- 确定反应性氧物种 (ROS) 在调节神经可塑性的作用.
- 探索性别特异性线索对神经可塑性和肠道修复的影响.
主要方法:
- 利用果 (Drosophila melanogaster) 的肠道作为研究神经可塑性的模型系统.
- 给药有害物诱导神经损伤和观察到的组织反应.
- 操纵神经元的性别特征,并测量神经组织生长和肠道功能的变化.
- 评估了抗氧化剂对神经可塑性和肠道修复的影响.
主要成果:
- 摄入有害物质诱导了成年肠道神经组织的可逆生长女性,而不是男性.
- 来自肠道的活性氧物种 (ROS) 影响了这种神经生长,可以通过抗氧化剂抑制.
- 女性神经元的男性化抑制了神经生长,而男性神经元的女性化没有赋予可塑性.
- 阻断神经可塑性损害了肠道功能 (排便) 并降低了女性的生存率.
结论:
- 肠作为一个有价值的模型来剖析成人神经可塑性和性别特定修复机制的调节者.
- 肠道中女性特有的神经可塑性支持基本的生理功能并增强生存能力.
- 研究结果强调了性别特异性线索在介导神经可塑性和电路修复方面的重要性.
相关概念视频
00:58Plasticity
3.1K
Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
3.1K
01:31Plasticizers
366
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
366
01:43Sex-linked Disorders
108.6K
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.
108.6K
01:21Plastic Behavior
569
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
569
01:14Plastic Deformations
431
It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
431
01:19Plastic Deformations
459
Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
459