随着电子设备的普及与环境光污染现象的日趋严重,视网膜光辐照引起的损伤及其对视网膜色素变性、年龄相关性黄斑变性等疾病的致病作用逐渐被关注。光-视网膜组织反应类型以光热反应及光化学反应为主,其中可见光产生的光化学反应与视网膜疾病关系密切。光辐照参数包括光辐照波长、辐照能量及辐照时间等,不同参数下光辐照对视网膜细胞的作用还可能受多种外界因素影响。较多视网膜光辐照细胞实验模型建立以研究光辐照,尤其是蓝光对视网膜色素上皮细胞、光感受器细胞及神经细胞损伤的机制。光辐照会导致视网膜各细胞氧化应激、内质网应激及线粒体损伤激活自噬调控细胞凋亡。炎性小体激活及外泌体也参与调控光辐照对视网膜色素上皮细胞的损伤。也有研究探讨不同波长光源对细胞的潜在治疗作用。本文从光-视网膜组织反应类型、生物学研究中常用的光辐照参数,以及视网膜色素上皮细胞光辐照模型、视网膜光感受器细胞光辐照模型、视网膜神经节细胞光辐照模型等方面就视网膜光辐照的实验模型,探讨不同模型间细胞及光辐照参数的差异。
With the popularity of electronic devices and the increasing environmental light pollution, more attention has been paid to the damage caused by retinal light irradiation and its pathogenic effects in retinal pigment degeneration, age-related macular degeneration and other diseases.The types of light-retinal tissue reaction are mainly photothermal and photochemical, and the photochemical reaction produced by visible light is closely related to retinal diseases.The parameters of light irradiation include wavelength, energy density and duration, etc.The effect of light irradiation on retinal cells can be influenced by many external factors under different parameters.Many in vitro models of light irradiation on retinal cells have been established to study the mechanism of light irradiation, especially blue light on retinal pigment epithelial cells, photoreceptor cells and nerve cells.Light irradiation can cause oxidative stress, endoplasmic reticulum stress and mitochondrial damage in retinal cells, which activates autophagy and regulates apoptosis.Inflammasome activation and exosomes are also involved in the regulation of light-induced damage to retinal pigment epithelial cells.There are also studies on the potential therapeutic effect of different wavelength light sources on cells.This review discusses the differences in cellular and light irradiation parameters between different models with respect to experimental models of retinal light irradiation in terms of types of light-retinal tissue responses, light irradiation parameters commonly used in biological studies, and retinal pigment epithelium light irradiation models, retinal photoreceptor light irradiation models, and retinal ganglion cell light irradiation models.
徐翌华,朱鸿. 视网膜光辐照实验模型研究进展[J]. 中华实验眼科杂志,2023,41(12):1243-1248.
DOI:10.3760/cma.j.cn115989-20200520-00364版权归中华医学会所有。
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