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[摘要]
铁死亡是近年发现的一种新型细胞死亡方式,与过去已知细胞死亡方式有明显差异。铁死亡的机制为在细胞铁过载基础上发生的谷胱甘肽过氧化物酶(GPX)失活和细胞内致死性脂质过氧化物累积,电镜下可以观察到细胞膜破裂,线粒体嵴减少,线粒体外膜皱缩破裂等变化。目前研究发现眼科许多疾病涉及氧化还原稳态破坏、GPX失活、铁代谢紊乱、脂质过氧化物累积等铁死亡相关过程,提示铁死亡在常见眼科疾病中发挥了重要作用。本文主要围绕铁死亡机制以及铁死亡在角膜损伤、白内障、青光眼、年龄相关性黄斑变性和糖尿病视网膜病变中的作用进行综述,有助于进一步梳理常见眼科疾病的病理机制,加深对眼科疾病的理解,为眼科疾病的防治提供新思路。
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[Abstract]
Ferroptosis is a novel form of cell death that has been discovered in recent years and differs markedly from previously known cell death. The mechanism of ferroptosis is the inactivation of glutathione peroxidase(GPX)and the accumulation of lethal intracellular lipid peroxides that occur on the basis of cellular iron overload. Changes such as cell membrane rupture, mitochondrial crest reduction, and outer mitochondrial membrane shrinkage rupture can be observed under electron microscopy. Current studies have found that many diseases in ophthalmology involve ferroptosis-related processes such as iron overload, the imbalance of redox homeostasis, the inactivation of GPX, and accumulation of lethal levels of lipid hydroperoxides, which identified the important role of ferroptosis in ocular disease. This review focuses on the mechanism of ferroptosis and its role in corneal injury, cataract, glaucoma, age-related macular degeneration and diabetic retinopathy, which helps to sort out the pathological mechanisms of common ocular diseases and provide new ideas for the prevention and treatment of ocular diseases.
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