在前眼和侧眼哺乳动物中比较的神经可塑性 诱导双眼视力功能障碍:从单眼剥夺模型的见解
Fábio Leite do Amaral Júnior1, Thalyta Alves Rodrigues1, Nonata Lúcia Trévia da Silva1
1Laboratório de Investigações em Neurodegeneração e Infecção, Universidade Federal do Pará, Instituto de Ciências Biológicas, Hospital Universitário João de Barros Barreto, Belém, Pará, Brazil.
The European journal of neuroscience
|July 9, 2025
概括
视觉皮层可塑性在单眼剥夺后,前眼和侧眼哺乳动物之间有所不同. 这项比较研究揭示了眼治疗发展的保存机制.
科学领域:
- 神经科学是一个神经科学.
- 比较生物学的比较生物学
- 发育神经科学的发展神经科学.
背景情况:
- 视觉皮层可塑性对于早期视觉系统发育至关重要.
- 特定物种的眼部解剖学和生态因素影响这种可塑性.
- 单眼剥夺 (MD) 是研究眼的关键模型.
研究的目的:
- 为了比较视觉系统的发育,以响应MD在前眼和侧眼哺乳动物.
- 综合关于眼睛解剖学如何塑性形成的证据.
- 为了确定潜在的眼治疗的保存和分离机制.
主要方法:
- 对各种哺乳动物物种单眼剥夺研究的比较综述.
- 对视觉皮层发育,眼睛主导转移和突触重塑的分析.
- 检查细胞机制,包括内核子,细胞外矩阵和神经调节器.
主要成果:
- 前眼的物种 (猫,灵长类动物) 对MD诱导的眼睛主导转移和V1柱状重塑具有很高的敏感性.
- 侧眼物种 (动物,类动物) 通过状组织重组和细胞外矩阵重塑表现出可塑性,尽管缺乏经典的眼睛主导柱.
- 确定了像质激活和神经调节器作用 (BDNF,NRG1) 等共享的细胞机制.
结论:
- 在前眼和后眼哺乳动物之间存在不同的可塑性模式,与双眼一体化有关.
- 视觉皮层可塑性的保存原则在物种之间出现.
- 了解跨物种差异有助于解释动物模型,并为精确的眼治疗提供信息.
更多相关视频
08:42Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
Published on: February 8, 2020
10.2K
05:29A Highly Reproducible and Straightforward Method to Perform In Vivo Ocular Enucleation in the Mouse after Eye Opening
Published on: October 6, 2014
23.7K
相关概念视频
Muscles of the Eye
The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Focusing of Light in the Eye
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Accessory Structures of the Eye
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
