相关实验视频
Updated: Jul 15, 2025
06:52
Reconstruct Human Retinoblastoma In Vitro
Published on: October 11, 2022
1.4K
在CRB1相关的视网膜病变中发生叶低形成
Ana Catalina Rodriguez-Martinez1,2,3, Bethany Elora Higgins1,2, Vijay Tailor-Hamblin1,2,4
1UCL Institute of Ophthalmology, London EC1V 9EL, UK.
International journal of molecular sciences
|September 28, 2023
概括
CRB1基因突变会导致视网膜发育不良,并可能导致叶低成形. 这项研究发现,在65%的CRB1患者中,状细胞缺血症,与视力恶化有关,但与疾病进展无关.
科学领域:
- 眼科医生 眼科 眼科
- 遗传学 遗传学 是一个
- 视网膜发育 视网膜发育
背景情况:
- CRB1基因对于视网膜的发育和维护至关重要.
- 在CRB1中断导致各种视网膜变,包括EOSRD/LCA,RP,CORD和MD.
- 之前的研究在CRB1视网膜病变中发现了不成熟的视网膜层结构,但没有描述发育的影响.
研究的目的:
- 这项研究旨在调查患有CRB1相关视网膜病变的患者的形缺血症 (FH) 的存在和影响.
- 在这个队列中分析FH,视力敏度和疾病进展之间的关联.
主要方法:
- 来自穆尔菲尔德眼科医院的具有病原性双基CRB1变异的患者的回顾性分析.
- 收集人口统计和临床数据.
- 用光谱域光学连贯性断层扫描 (SD-OCT) 分析与FH结构分级.
主要成果:
- 在20名 (65%) 患者中确诊了状缺血症 (FH),所有患者都被归类为1级.
- 在患有和没有FH的患者之间观察到最佳校正视敏度 (BCVA) 的显著差异 (p = 0.014).
- 在这两组中,BCVA随着时间的推移而下降,不论FH是否存在 (p < 0.001).
结论:
- 这项研究是首次在CRB1相关的视网膜病变队列中报告FH,支持CRB1在发育中的作用.
- FH与较差的BCVA和异常的视网膜形态有关.
- 在CRB1视网膜病变中,FH的存在没有影响CRB1视网膜病变的整体疾病进展率.
相关概念视频
01:20The Retinoblastoma Gene
4.1K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
4.1K
01:20Anatomy of the Eyeball
7.2K
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle...
7.2K
01:22Photoreceptors and Visual Pathways
6.1K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
6.1K