施瓦赫曼 - 钻石综合征与形形变相关
Jingwen Zhang1, Thales A C de Guimaraes1,2, Dorothy Thompson3
1UCL Institute of Ophthalmology, University College London, London, United Kingdom.
Retinal cases & brief reports
|March 4, 2024
概括
施瓦赫曼-戴蒙德综合征 (SDS) 患者可能会患上严重的棒形缩症. 这份病例报告详细介绍了一名16岁的女性,患有SDS和视力损失,在10年内呈现缓慢进展.
科学领域:
- 眼科医生 眼科 眼科
- 遗传学 是一个遗传学.
- 血液学 血液学 血液学
背景情况:
- 施瓦赫曼-戴蒙德综合征 (SDS) 是一种罕见的自体相衰退性疾病.
- 在SDS患者中,眼部表现,特别是视网膜变,越来越多地被识别出来.
- 杆状形缩症 (RCD) 是受影响个体视力障碍的重要原因.
研究的目的:
- 报告一个Shwachman-Diamond综合征病例与同时发生的棒形变.
- 描述这个患者的长期视觉结果和视网膜变化.
- 强调眼科监测在SDS中的重要性.
主要方法:
- 追溯的单一案例报告.
- 眼科检查包括视觉敏度 (VA),光学连贯性断层扫描 (OCT), fundus 自流光 (FAF),闪电网红图 (fERG) 和图案视觉唤起潜力 (pVEP).
- 10年的随访期. 10年的随访期.
主要成果:
- 一名患有SDS的16岁女性呈现出严重的杆状缩症和减少的VA.
- 海外国与地区发现了渐进的外视网膜稀疏和圆形区域的破坏.
- FAF显示普遍的低自流和一个周围环的超自流.
- fERG证实了严重的杆状形变;pVEP表明了一些保存的黄斑通路功能障碍.
结论:
- 施瓦赫曼 - 戴蒙德综合征可以呈现出严重的早期发病的杆状形缩症.
- 在10年内观察到视网膜变化的缓慢解剖进展.
- 保持了相对功能性黄斑的保存,支持双边的VA为6/36.
相关概念视频
Photoreceptors and Visual Pathways
6.0K
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,...
6.0K
Sex-linked Disorders
102.1K
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.
102.1K
The 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
Cohesins
4.5K
Cohesin protein complexes are a molecular glue that holds two sister chromatids together. They play an important role both in mitosis and meiosis. In mitosis, all cohesin complexes present on the chromosomes are removed before the start of the anaphase stage.
Cohesin complexes in Meiotic Division
Meiosis involves two distinct rounds of chromosomal segregation and cell divisions— Meiosis I followed by Meiosis II – producing four daughter cells. Meiosis I includes the separation of...
Cohesin complexes in Meiotic Division
Meiosis involves two distinct rounds of chromosomal segregation and cell divisions— Meiosis I followed by Meiosis II – producing four daughter cells. Meiosis I includes the separation of...
4.5K
Pleiotropy
40.4K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.4K


