The characteristics of retinal neovascularization and tube diameter and the levels of miR-126 and miR-141-3p in peripheral blood of patients with diabetic retinopathy
Objective To analyze the characteristics of retinal neovascularization and tube diameter and the levels of miR-126 and miR-141-3p in peripheral blood of patients with diabetic retinopathy(DR).Methods A total of 130 patients with DR Admitted to the Xi'an First Hospital from January 2020 to December 2023 were selected as the study objects(DR group),and 139 patients with type 2 diabetes who did not develop retinopathy during the same period(non-DR group)were selected.The characteristics of retinal neovascularization and tube diameter and the levels of miR-126 and miR-141-3p in peripheral blood were compared between the two groups.The patients with DR were divided into two groups according to whether retinal neovascularization and vascular diameter abnormalities occurred.The levels of miR-126 and miR-141-3p were compared between the two groups.Logistic regression analysis was used to evaluate the relationship between miR-126 and miR-141-3p levels in peripheral blood and retinal neovascularization and vascular diameter abnormalities in DR patients.Receiver operating characteristic(ROC)curve was drawn to examine the predictive efficacy of peripheral blood miR-126 and miR-141-3p levels on retinal neovascularization and tube diameter abnormalities in patients with DR.Results There were significant differences in retinal neovascularization and vascular diameter between DR And non-DR patients.The retinal features of DR patients were significant,showing that a large number of new blood vessels form in and around the optic disc,spread to the entire retina,and form a fragile network structure,which was easy to be damaged and adhere to the vitreous cortex,and wound not disappear by itself and might invade the vitreous.The vascular diameter varied greatly,partial dilation showed abnormal blood flow,and partial stenosis reflected vascular damage.There was no significant retinal neovascularization in the non-DR group.The levels of miR-126 and miR-141-3p in the DR group were significantly lower than those in the non-DR group(all P＜0.05).Among 130 patients with DR,62 of them had abnormal retinal neovascularization and tube diameter,accounting for 47.69％.The levels of miR-126 and miR-141-3p in peripheral blood of DR patients with retinal neovascularization and vascular diameter abnormalities were lower than those in the non-DR group(all P＜0.05).Logistic regression analysis showed that the levels of miR-126 and miR-141-3p in peripheral blood were associated with abnormal retinal neovascularization and tube diameter in DR patients(all P＜0.05).ROC curve analysis showed that miR-126 and miR-141-3p had good predictive value for the occurrence of retinal neovascularization and tube diameter abnormalities in patients with DR.Conclusions Some patients with DR have abnormal characteristics of retinal neovascularization and tube diameter,and peripheral blood miR-126 and miR-141-3p are related to the neovascularization and tube diameter abnormalities in patients with DR.
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