相关实验视频
Updated: Aug 1, 2026

12:11
A Rhodopsin Transport Assay by High-Content Imaging Analysis
Published on: January 16, 2019
6.9K
来自一项对患有病原性p.Gly208Asp PRPH2变异与视网膜缩相关的患者自然史研究的早期发现
Shadi M AlAshwal1, Rasha Kako1, Fritz Gerald P Kalaw1
1Jacobs Retina Center, University of California San Diego, La Jolla, California; The Viterbi Family Department of Ophthalmology and Shiley Eye Institute, University of California San Diego, La Jolla, California.
Retina (Philadelphia, Pa.)
|November 10, 2025
概括
这种p.Gly208Asp PRPH2基因变异与中央大叶胆管缩症 (CACD) 有关. 多式成像显示了一年内视网膜逐渐变薄和自变化.
科学领域:
- 眼科医生 眼科 眼科
- 遗传学 遗传学 是一个
- 视网膜疾病 视网膜疾病
背景情况:
- PRPH2基因变异与遗传性视网膜变症有关.
- 中央带状胆骨缩症 (CACD) 是一种黄斑变性的一种形式.
- 了解基因型-表型相关性对于疾病管理至关重要.
研究的目的:
- 在患有 p.Gly208Asp PRPH2 变异的患者中表征纵向视网膜变化.
- 用多式成像来评估疾病进展.
- 确定与PRPH2相关的CACD监测的潜在生物标志物.
主要方法:
- 对7名患有p.Gly208Asp PRPH2变异的患者和9名对照进行了前性,纵向的队列研究.
- 多模式成像包括光学连贯断层扫描 (OCT) 和 fundus 自流光 (FAF).
- 用于视网膜灵敏度评估和最佳校正视敏度 (BCVA) 测量的美观微波测量.
主要成果:
- 所有患者在基线呈现CACD表型.
- 在平均1年的随访期间,平均视网膜厚度显著减少 (p=0.001).
- 在缩区域的自光降低区域显著增加 (p < 0.001).
结论:
- 这种 p.Gly208Asp PRPH2 变异与 CACD 现型有关.
- 多模式成像为CACD提供短期进展标志物.
- 这些发现可能有助于疾病监测和未来的临床试验开发与PRPH2相关的视网膜退化.
相关概念视频
Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
Genome-wide Association Studies-GWAS
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
Diabetic Retinopathy
DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...

