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Rhamnazin attenuates inflammation and inhibits alkali burn-induced corneal neovascularization in rats

机译:鼠李糖嗪减轻炎症并抑制碱烧伤诱导的角膜新生血管形成

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The purpose of our study was to determine whether rhamnazin inhibits corneal neovascularization in the rat alkali burn model, and alleviates the inflammatory response of the cornea. Rhamnazin inhibited the proliferation of HUVEC cells in a dose-dependent manner, and it also inhibited the migration and luminal formation of HUVEC cells. 20 μM rhamnazin eye drops were applied to an animal model of corneal alkali burn neovascularization 4 times a day for 14 days. The corneal neovascularization in the rhamnazin group was obviously less than that in the PBS control group. In the rhamnazin group, the inflammatory index of the cornea decreased gradually over time, whereas the inflammatory index of the PBS group decreased only slightly with time. The corneal CNV area in the PBS group was significantly larger than that in the rhamnazin group. The expression level of VEGF protein of the rhamnazin group was lower than that in the PBS group, and the expression level of PEDF was significantly higher than that of the PBS group. Rhamnazin downregulated the expression of VEGFR2 protein and decreased the expression levels of p-STAT3, p-MAPK and p-Akt proteins. This study provides a new idea for the study of the molecular mechanism of corneal neovascularization.
机译:我们的研究目的是确定鼠李糖苷是否抑制大鼠碱烧伤模型中的角膜新生血管,并减轻角膜的炎症反应。鼠李糖苷以剂量依赖的方式抑制HUVEC细胞的增殖,并且还抑制HUVEC细胞的迁移和腔形成。每天4次将20μM鼠李糖嗪滴眼液用于角膜碱烧伤新血管形成的动物模型,持续14天。鼠李糖苷组的角膜新生血管明显少于PBS对照组。在鼠李糖苷组中,角膜的炎性指数随时间逐渐降低,而PBS组的炎性指数随时间仅轻微降低。 PBS组的角膜CNV面积明显大于鼠李糖苷组。鼠李糖苷组的VEGF蛋白表达水平低于PBS组,而PEDF的表达水平明显高于PBS组。 Rhamnazin下调VEGFR2蛋白的表达并降低p-STAT3,p-MAPK和p-Akt蛋白的表达水平。该研究为角膜新生血管形成的分子机制研究提供了新思路。

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