Gachon Research Institute of Pharmaceutical Sciences, College of Pharmacy, Gachon University, Incheon 21936, Korea.
Department of Pharmacognosy, Faculty of Pharmacy, Hong Bang International University, Ho Chi Minh 215, Vietnam.
Nutrients. 2021 Jan 25;13(2):359. doi: 10.3390/nu13020359.
N-retinylidene-N-retinylethanolamine (A2E) accumulation in the retina is a prominent marker of retinal degenerative diseases. Blue light exposure is considered as an important factor contributing to dry age-related macular degeneration (AMD). Eggplant and its constituents have been shown to confer health benefits, but their therapeutic effects on dry AMD remain incompletely understood. In this study, we showed that an extract of L. (EPX) protected A2E-laden ARPE-19 cells against blue light-induced cell death via attenuating reactive oxygen species. Transcriptomic analysis demonstrated that blue light modulated the expression of genes associated with stress response, inflammation, and cell death, and EPX suppressed the inflammatory pathway induced by blue light in A2E-laden ARPE-19 cells by inhibiting the nuclear translocation of nuclear factor kappa B and transcription of pro-inflammatory genes ( and ). The degradation of intracellular A2E was considered the major mechanism underlying the protective effect of EPX. Moreover, chlorogenic acid isolated from EPX exerted protective effects against blue light-induced cell damage in A2E-laden ARPE-19 cells. In vivo, EPX administration in BALB/c mice reduced the fundus damage and degeneration of the retinal layer in a blue light-induced retinal damage model. Collectively, our findings suggest the potential role of L. extract for AMD treatment.
N-视黄醛-N-视黄醇基乙胺(A2E)在视网膜中的积累是视网膜退行性疾病的一个显著标志物。蓝光暴露被认为是导致干性年龄相关性黄斑变性(AMD)的一个重要因素。茄子及其成分已被证明具有健康益处,但它们对干性 AMD 的治疗作用仍不完全清楚。在这项研究中,我们表明,茄子提取物(EPX)通过减轻活性氧来保护载有 A2E 的 ARPE-19 细胞免受蓝光诱导的细胞死亡。转录组分析表明,蓝光调节与应激反应、炎症和细胞死亡相关的基因表达,EPX 通过抑制核因子 kappa B 的核转位和促炎基因的转录来抑制蓝光诱导的 A2E 载 ARPE-19 细胞中的炎症途径(和)。细胞内 A2E 的降解被认为是 EPX 保护作用的主要机制。此外,从 EPX 中分离出的绿原酸对载有 A2E 的 ARPE-19 细胞中的蓝光诱导的细胞损伤具有保护作用。在体内,EPX 给药可减少 BALB/c 小鼠在蓝光诱导的视网膜损伤模型中的眼底损伤和视网膜层变性。总的来说,我们的研究结果表明茄子提取物在 AMD 治疗中的潜在作用。
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