在临床前糖尿病视网膜病变中视网膜毛细管不 perfusion
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Retinal Pathophysiological Evaluation in a Rat Model
Published on: May 6, 2022
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Torcato Santos1, Ana Rita Santos1,2, Ana Catarina Almeida1
1AIBILI-Association for Innovation and Biomedical Research on Light and Image, Coimbra, Portugal.
Ophthalmic research
|October 11, 2023
概括
光学连贯断层扫描血管学 (OCTA) 在可见视网膜病变出现之前,在2型糖尿病 (T2D) 患者中检测到早期的视网膜微血管变化. 这允许在临床前糖尿病视网膜疾病中早期识别缺血表型.
科学领域:
- 眼科医生 眼科 眼科
- 糖尿病学 糖尿病学
- 医疗成像医学成像
背景情况:
- 2型糖尿病 (T2D) 构成患糖尿病视网膜病变的重大风险.
- 早期发现微血管变化对于管理T2D并发症至关重要.
- 超广场 fundus 摄影 (UWF-FP) 可以识别临床前视网膜病变.
研究的目的:
- 在T2D患者中使用OCTA识别视网膜微血管变化,患者有临床前视网膜病变.
- 为了将UWF-FP的发现与早期糖尿病变化的OCTA指标相关联.
主要方法:
- 横截面观测研究.
- 进行了UWF-FP (200°) 和光谱域OCTA (SD-OCTA) 3x3毫米的采集.
- 分析包括表面 (SCP) 和深层 (DCP) 毛细血管的骨架化血管密度 (SVD), perfusion density (PD) 和毛细血管不 perfusion (CNP).
主要成果:
- 与健康对照人群相比,SD-OCTA显示SVD和PD显著下降,T2D患者的CNP增加 (p<0.001).
- 微血管变化,特别是SVD和CNP下降,在SCP (35-45%) 比DCP (9-15%) 更加普遍.
- 这些发现表明SCP的早期变化,表明在临床前糖尿病视网膜疾病中存在缺血性表型.
结论:
- 以OCTA指标 (SVD,CNP) 评估的视网膜毛细管不 perfusion 在可见的病变出现之前,可以在T2D患者的中央视网膜中检测到.
- 在糖尿病视网膜病变的早期阶段,OCTA对于识别黄斑微血管变化非常重要.
- 这使得在疾病进展过程中可以很早地识别出缺血性表型.
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