缺氧对糖尿病角膜流层微环境的影响
Purnima Sharma1, Jian-Xing Ma2, Dimitrios Karamichos3
1North Texas Eye Research Institute, University of North Texas Health Science Center, 3430 Camp Bowie Blvd, Fort Worth, TX, 76107, USA; Department of Pharmaceutical Sciences, University of North Texas Health Science Center, 3430 Camp Bowie Blvd, Fort Worth, TX, 76107, USA.
Experimental eye research
|January 15, 2024
概括
缺氧显著影响糖尿病角质炎,损害伤口愈合和改变1型和2型糖尿病患者的细胞健康. 这项研究强调了缺氧.
科学领域:
- 眼科医生 眼科 眼科
- 内分泌学 在内分泌学.
- 细胞生物学 细胞生物学
背景情况:
- 糖尿病角膜病变 (DK) 在糖尿病中导致视力受损.
- 在DK中缺氧的作用仍然在很大程度上未被探索.
- 缺氧会影响1型 (T1DM) 和2型 (T2DM) 糖尿病.
研究的目的:
- 为了研究缺氧在体外对健康,T1DM和T2DM受试者的人类角膜 stromal 细胞的影响.
- 用2D和3D模型在正常和缺氧条件下分析细胞反应.
主要方法:
- 培养了原始的人类角膜层细胞 (HCFs,T1DMs,T2DMs).
- 细胞被暴露在正常 (21% O2) 和低氧 (2% O2) 条件下.
- 使用了2D和3D体外模型.
主要成果:
- 缺氧影响T2DM角膜 stromal 细胞伤口愈合,影响氧化应激,线粒体,细胞平衡,ER健康和纤维化.
- 低氧调节的T1DM角膜 stromal 细胞标记与膜通透,氧化应激 (BAX) 和蛋白质降解有关.
- 两种T1DM和T2DM细胞都显示出缺氧诱导的氧化应激 (NOQ1/Nrf2),线粒体变化 (HSP27) 和恒温失调 (HSP90).
结论:
- 缺氧在T1DM和T2DM中显著影响糖尿病角膜.
- 细胞对缺氧的反应在T1DM和T2DM之间有所不同.
- 需要进一步的研究,以了解低氧在糖尿病角膜病变中的复杂相互作用.
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