Fu Zhangyitian, Wan Mimi, Jin Tuo, Lai Sihua, Li Xiaoyin, Sun Xinyi, Gao Weiping
Department of Ophthalmology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, 210004, China.
Department of Ophthalmology, Kunshan Hospital of Chinese Medicine, Suzhou, Jiangsu, 215399, China.
Cell Mol Biol (Noisy-le-grand). 2024 May 27;70(5):111-118. doi: 10.14715/cmb/2024.70.5.15.
Bioinformatics analysis was performed to reveal the underlying pathogenesis of type 2 diabetes (T2DM) dry eye(DE) and to predict the core targets and potential pathways for electroacupuncture (EA) treatment of T2DM DE, in which key targets such as Toll-likereceptor4 (TLR4), NF-κB and Tumor necrosis factor-α (TNF-α) may be involved. Next, streptozotocin and a high-fat diet were used to generate T2DM-DE rats. Randomly picked EA, fluorometholone, model, and sham EA groups were created from successfully modelled T2DM DE rats. Six more rats were chosen as the blank group from among the normal rats. The results of DE index showed that EA improved the ocular surface symptoms.HE staining showed that EA attenuated the pathological changes in the cornea, conjunctiva and lacrimal gland of T2DM DE rats. EA decreased the expression of TLR4, MyD88, P-NF-κB P65, and TNF-α in the cornea, conjunctiva, and lacrimal gland, in accordance with immunofluorescence and Western blot data. Thus, EA reduced ocular surface symptoms and improved pathological changes of cornea, conjunctiva, and lacrimal gland induced by T2DM DE inT2DM DE rats, and the mechanism may be related to the inhibition of overactivation of the TLR4/NF-κB signaling pathway by EA and thus attenuating ocular surface inflammation.
进行生物信息学分析以揭示2型糖尿病(T2DM)干眼症(DE)的潜在发病机制,并预测电针(EA)治疗T2DM DE的核心靶点和潜在途径,其中可能涉及Toll样受体4(TLR4)、核因子κB(NF-κB)和肿瘤坏死因子-α(TNF-α)等关键靶点。接下来,使用链脲佐菌素和高脂饮食制备T2DM-DE大鼠。从成功建模的T2DM DE大鼠中随机选取EA组、氟米龙组、模型组和假EA组。从正常大鼠中选取另外6只大鼠作为空白组。干眼症指标结果显示EA改善了眼表症状。苏木精-伊红(HE)染色显示EA减轻了T2DM DE大鼠角膜、结膜和泪腺的病理变化。根据免疫荧光和蛋白质印迹数据,EA降低了角膜、结膜和泪腺中TLR4、髓样分化因子88(MyD88)、磷酸化核因子κB亚基P65(P-NF-κB P65)和TNF-α的表达。因此,EA减轻了T2DM DE大鼠眼表症状,改善了T2DM DE诱导的角膜、结膜和泪腺的病理变化,其机制可能与EA抑制TLR4/NF-κB信号通路过度激活从而减轻眼表炎症有关。