Nian Shen, Lo Amy C Y, Mi Yajing, Ren Kai, Yang Di
Department of Pathology, Xi'an Medical University, Xi'an, Shaanxi Province, China.
Department of Ophthalmology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong.
Eye Vis (Lond). 2021 May 1;8(1):15. doi: 10.1186/s40662-021-00239-1.
Diabetic retinopathy (DR), one of the common complications of diabetes, is the leading cause of visual loss in working-age individuals in many industrialized countries. It has been traditionally regarded as a purely microvascular disease in the retina. However, an increasing number of studies have shown that DR is a complex neurovascular disorder that affects not only vascular structure but also neural tissue of the retina. Deterioration of neural retina could precede microvascular abnormalities in the DR, leading to microvascular changes. Furthermore, disruption of interactions among neurons, vascular cells, glia and local immune cells, which collectively form the neurovascular unit, is considered to be associated with the progression of DR early on in the disease. Therefore, it makes sense to develop new therapeutic strategies to prevent or reverse retinal neurodegeneration, neuroinflammation and impaired cell-cell interactions of the neurovascular unit in early stage DR. Here, we present current perspectives on the pathophysiology of DR as a neurovascular disease, especially at the early stage. Potential novel treatments for preventing or reversing neurovascular injuries in DR are discussed as well.
糖尿病视网膜病变(DR)是糖尿病常见并发症之一,在许多工业化国家,它是导致工作年龄人群视力丧失的主要原因。传统上,它被视为视网膜的一种纯粹的微血管疾病。然而,越来越多的研究表明,DR是一种复杂的神经血管疾病,不仅影响血管结构,还影响视网膜的神经组织。在DR中,神经视网膜的退化可能先于微血管异常,从而导致微血管变化。此外,神经元、血管细胞、神经胶质细胞和局部免疫细胞之间的相互作用遭到破坏,这些细胞共同构成神经血管单元,被认为与疾病早期DR的进展有关。因此,开发新的治疗策略以预防或逆转早期DR中视网膜神经变性、神经炎症和神经血管单元细胞间相互作用受损是有意义的。在此,我们阐述了DR作为神经血管疾病的病理生理学的当前观点,尤其是在早期阶段。还讨论了预防或逆转DR中神经血管损伤的潜在新疗法。