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Protective Effects of Blueberry Anthocyanins against H2O2-Induced Oxidative Injuries in Human Retinal Pigment Epithelial Cells
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-02-07 00:00:00 , DOI: 10.1021/acs.jafc.7b06135
Wu-Yang Huang 1, 2 , Han Wu 1 , Da-Jing Li 1 , Jiang-Feng Song 1 , Ya-Dong Xiao 1 , Chun-Quan Liu 1 , Jian-Zhong Zhou 1 , Zhong-Quan Sui 3
Affiliation  

Blueberry anthocyanins are considered protective of eye health because of their recognized antioxidant properties. In this study, blueberry anthocyanin extract (BAE), malvidin (Mv), malvidin-3-glucoside (Mv-3-glc), and malvidin-3-galactoside (Mv-3-gal) all reduced H2O2-induced oxidative stress by decreasing the levels of reactive oxygen species and malondialdehyde and increasing the levels of superoxide dismutase, catalase, and glutathione peroxidase in human retinal pigment epithelial cells. BAE and the anthocyanin standards enhanced cell viability from 63.69 ± 3.36 to 86.57 ± 6.92% (BAE), 115.72 ± 23.41% (Mv), 98.15 ± 9.39% (Mv-3-glc), and 127.97 ± 20.09% (Mv-3-gal) and significantly inhibited cell apoptosis (P < 0.01 for all). Mitogen-activated-protein-kinase pathways, including ERK1/2 and p38, were involved in the bioactivities. In addition, the anthocyanins decreased vascular-endothelial-cell-growth-factor levels and activated Akt-signal pathways. These combined results supported the hypothesis that blueberry anthocyanins could inhibit the induction and progression of age-related macular degeneration (AMD) through antioxidant mechanisms.

中文翻译:

蓝莓花色苷对H 2 O 2诱导的人视网膜色素上皮细胞氧化损伤的保护作用

蓝莓花青素因具有公认的抗氧化特性,被认为对眼睛健康具有保护作用。在这项研究中,蓝莓花色苷提取物(BAE),麦维汀(Mv),麦维汀3-葡萄糖苷(Mv-3-glc)和麦维汀3-半乳糖苷(Mv-3-gal)均减少了H 2 O 2诱导通过降低人视网膜色素上皮细胞中的活性氧和丙二醛的水平并增加超氧化物歧化酶,过氧化氢酶和谷胱甘肽过氧化物酶的水平来氧化氧化应激。BAE和花青苷标准品将细胞活力从63.69±3.36(BAE)提高到86.57±6.92%(BAE),115.72±23.41%(Mv),98.15±9.39%(Mv-3-glc)和127.97±20.09%(Mv-3) -gal)并显着抑制细胞凋亡(P<0.01)。包括ERK1 / 2和p38在内的丝裂原活化蛋白激酶通路参与了生物活性。此外,花色苷降低了血管内皮细胞生长因子水平并激活了Akt信号通路。这些综合结果支持了以下假设:蓝莓花色苷可以通过抗氧化剂机制抑制年龄相关性黄斑变性(AMD)的诱导和进展。
更新日期:2018-02-07
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