齐明颗粒通过调节PI3K/Akt信号通路来改善糖尿病视网膜病变
Lin Zhou1,2, Tingyu Qin3, Yingnan Lv3
1Department of Pharmacology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China.
概括
齐明颗粒通过减少视网膜细胞亡和保持血视网膜屏障完整性来保护糖尿病视网膜病变. 这种传统中医药可能调节酸氨基3-激酶/蛋白激酶B信号通路.
科学领域:
- 眼科医生 眼科 眼科
- 药理学 药理学是指药理学的学科.
- 细胞生物学 细胞生物学
背景情况:
- 糖尿病视网膜病变 (DR) 是导致视力丧失的主要原因.
- 血液视网膜屏障 (BRB) 的损伤是DR进展的关键特征.
- 目前对DR的治疗有局限性,需要新的治疗策略.
研究的目的:
- 为了评估Qiming颗粒对DR的保护作用.
- 调查Qiming颗粒对视网膜细胞亡和BRB完整性的影响.
- 探索潜在的分子机制,包括PI3K/Akt信号通路.
主要方法:
- 一种糖尿病视网膜病变的老鼠模型是使用链条毒素诱导的.
- 视网膜组织病理学被评估使用血素和色素染色.
- 使用TUNEL试验量化了亡的数量.
- 紧密结合蛋白的蛋白质表达水平和PI3K/Akt通路通过Westernblotting进行分析.
主要成果:
- 明颗粒缓解了DR症状,改善了视网膜组织病理学.
- 在Qiming组中观察到视网膜细胞亡的显著减少.
- 发现了紧结蛋白 (occludin,ZO-1) 的升调和激活PI3K/Akt信号.
- 观察到减少了亲亡蛋白的表达 (Bax,分裂的Caspase-3) 和增加了Bcl-2.
结论:
- 齐明颗粒显示出对DR的显著保护作用.
- 该机制涉及预防亡和维护BRB完整性.
- 调节PI3K/Akt信号通路是DR处理中的Qiming颗粒的潜在作用机制.
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