在状细胞视网膜病变和黄斑病变中循环血管生成相关的生物标志物
Rajani P Brandsen1,2, Ingeborg Klaassen3, Renée de Caluwe3
1Department of Ophthalmology, Amsterdam UMC, Amsterdam, the Netherlands.
British journal of haematology
|February 20, 2026
概括
状细胞疾病 (SCD) 可以通过状细胞视网膜病变 (SCR) 导致视力丧失. 这项研究发现,血管蛋白-2可能表明HbSS患者的缺氧,而内静止素可能在HbSC患者的SCR增殖中发挥作用.
科学领域:
- 眼科医生 眼科 眼科
- 血液学 血液学 血液学
- 血管生物学 血管生物学
背景情况:
- 状细胞疾病 (SCD) 导致显著的视网膜并发症,如状细胞视网膜病变 (SCR) 和黄斑病变 (SCM).
- 将SCD与这些眼部疾病联系在一起的潜在机制仍然不完全理解.
- 循环血管生成相关的因素与血管疾病有关,但它们在SCD视网膜病变中的具体作用尚不清楚.
研究的目的:
- 调查循环血管生成相关因素小组与HbSS和HbSC基因型的成人患者中SCR和SCM的存在和严重程度之间的关联.
- 识别可能有助于阐明与SCD相关的视网膜并发症的发病因子的潜在生物标志物.
主要方法:
- 患有HbSS (n=33) 和HbSC (n=33) 的成年患者接受了全面的眼科检查,包括光学连贯性断层扫描血管造影.
- 精选的血管生成相关因子 (angiopoietin-2,VEGF,内静素,IL-6,IL-10,等等) 的血水平. 使用酶相关的免疫吸收试验量化.
- 进行了统计分析,以将因子水平与SCR阶段和SCM存在相关联.
主要成果:
- 在15.2%的HbSS和63.6%的HbSC患者中观察到增殖性SCR (PSCR). 斑点异常是普遍存在的.
- 大多数研究的因素,包括VEGF,都没有显示出与SCR或SCM的显著关联.
- 在HbSS患者中,angiopoietin-2水平升高,与缺氧和炎症标志物相关 (IL-6,IL-10,LDH).
- 在患有PSCR的HbSC患者中,内静止素水平显著更高.
结论:
- 在HbSS患者中,血管蛋白-2的升高可能反映系统性缺氧,这是SCD病理生理学的关键因素.
- 在患有PSCR的HbSC患者中增加的内静止素表明在增殖性视网膜病变的发展中可能发挥作用.
- 这些发现为与SCD相关的视网膜疾病的分子机制提供了新的见解,并建议未来研究的潜在目标.
更多相关视频
07:18Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography
Published on: February 18, 2022
1.7K
12:28Quantification of Vascular Parameters in Whole Mount Retinas of Mice with Non-Proliferative and Proliferative Retinopathies
Published on: March 12, 2022
3.3K
相关概念视频
Regulation of Angiogenesis and Blood Supply
2.9K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.9K
Diabetic Retinopathy
65
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...
65
