摘要血视网膜屏障破坏、神经损伤、新生血管及纤维增生膜形成作为糖尿病视网膜病变（DR）的重要病理改变与多种玻璃体细胞因子的综合作用相关。VEGF主要参与增加视网膜血管通透性和诱导新生血管形成；色素上皮衍生因子则具有降低血管通透性，神经保护功能；IL在介导炎症反应中起关键作用，在缺氧状态下血浆和玻璃体液TNF-α显著升高，诱导炎症反应；多种眼部结构均可分泌TGF-β，是调节细胞增生分化的重要细胞因子；结缔组织生长因子则可促进内皮细胞生长、迁移和黏附。另有多项具体分子机制尚未完全阐明，需继续深入研究DR发生的分子机制。我们相信随着DR发生分子机制研究的深入，DR的早期干预及靶向治疗的效果将日趋理想。

abstractsBlood-retina barrier destruction, nerve injury, formation of neovascularization and fibroblast proliferation membrane are important pathological changes of DR, which are related to the combined effects of various vitreous cytokines. VEGF is mainly involved in increasing retinal vascular permeability and inducing neovascularization. Pigment epithelium derived factor is vital reducing vascular permeability and neuroprotection; IL plays a key role in mediating inflammatory response. TNF-α is related to inflammation, which is significantly up-regulated by hypoxia. TGF-β is an important cytokine regulating cell proliferation and differentiation. Connective tissue growth factor can promote the growth, migration and adhesion of endothelial cell. In addition, many other molecular mechanisms have not been fully elucidated, and further study on the molecular mechanism of DR is urgent. With the further study of molecular mechanism, the early intervention and targeted treatment of DR will be more effective.