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A Mouse Model of Retinal Recovery From Photo-Oxidative/Photo-Inflammatory Injury: Nrf2, SOD1, DJ-1, and Parkin Are Not Essential to Recovery

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单位: [1]UT Southwestern Med Ctr, Dept Ophthalmol, 5323 Harry Hines Blvd, Dallas, TX 75390 USA [2]Huazhong Univ Sci & Technol,Tongji Hosp,Tongji Med Coll,Dept Ophthalmol,Wuhan,Hubei,Peoples R China
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关键词: light-induced retinal degeneration oxidative stress retinal recovery Nrf2 FCD-LIRD

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PURPOSE. To determine if there is structural and functional recovery of the retina from light induced retinal degeneration, and to evaluate the role of the oxidative stress response elements Nrf2, SOD1, DJ-1, and Parkin in such a recovery process. METHODS. Eyes from C57BL/6J (B6J) mice and from oxidative stress response-deficient strains of mice were treated with intense light using the fundus camera-delivered light-induced retinal degeneration (FCD-LIRD) model. Fundus photographs, optical coherence tomography (OCT) images, and electroretinography (ERG) responses were obtained before the injury, during the "maximal injury phase'' (days 4-7) and during the "recovery phase'' (days 14-16) post light exposure and were evaluated for retinal damage and assessed for evidence of recovery from the injury. RESULTS. We demonstrate that mice treated with a sub-lethal FCD-LIRD protocol show an initial acute retina injury phase peaking between days 4 to 7 followed by a recovery phase in which the outer retinal thickness/volume and retinal function partially recover. These observations are reproduced in B6J mice and in mice lacking oxidative stress response enzymes (SOD1, DJ-1, and Parkin) or the oxidative stress response master regulator Nrf2. CONCLUSIONS. Our data indicate that retinal recovery from injury can proceed via pathways that are independent from the common oxidative stress response elements Nrf2, SOD1, DJ-1, and Parkin. Furthermore, the model of retinal recovery from injury that we describe here mimics changes seen in a variety of clinical entities and may provide an excellent platform for dissecting general pathways of retinal recovery from sub-lethal injury.

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出版当年[2018]版:
大类 | 3 区 医学
小类 | 2 区 眼科学
最新[2025]版:
大类 | 2 区 医学
小类 | 2 区 眼科学
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出版当年[2017]版:
Q1 OPHTHALMOLOGY
最新[2023]版:
Q1 OPHTHALMOLOGY

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第一作者单位: [1]UT Southwestern Med Ctr, Dept Ophthalmol, 5323 Harry Hines Blvd, Dallas, TX 75390 USA [2]Huazhong Univ Sci & Technol,Tongji Hosp,Tongji Med Coll,Dept Ophthalmol,Wuhan,Hubei,Peoples R China
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