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机构地区:[1]中国科学院上海生命科学研究院上海交通大学医学院健康科学研究所临床视觉科学研究组,上海200025 [2]同济大学附属第十人民医院眼科同济大学医学院眼科研究所临床视觉科学研究组
出 处:《国际眼科纵览》2012年第4期222-227,共6页International Review of Ophthalmology
摘 要:作为一类广泛参与细胞能量代谢、周期控制和免疫应答等生命过程的重要蛋白,去乙酰化酶Sirt1还具有明显的神经元保护作用。同时,Sirt1在许多视网膜疾病动物模型的干预中展示了不可忽视的作用。本文对这一领域的研究进展进行了综述,主要包括:在糖尿病视网膜病变中,Sirt1能够抑制视网膜的慢性炎症反应、减少视网膜新生血管生成并清除视网膜细胞的高血糖记忆;在视神经炎和青光眼模型中,Sirt1能保护视网膜神经节细胞,减少其凋亡;而在年龄相关性黄斑变性模型中,Sirt1能保护视网膜色素上皮细胞的活力和功能,并降低补体因子引起的视网膜自身免疫反应。在脉络膜新生血管生成过程中,Sirt1可能具有促血管增生作用,但尚需进一步研究。由于Sirt1活性对于减轻多种视网膜疾病的组织损伤均具有重要作用,因此Sirt1是治疗视网膜病变很有前景的靶点。Besides involved in metabolism process, cell cycle control and immune response, Sir tuinl (Sirtl), a member of Class III Histone deacetylase (HDAC), also demonstrated neuroprotective effects on the retinal cells in several retinal and optic nerve diseases. The roles of Sirtl in the development of retina diseases were reviewed and summarized in this article. The main points included: in diabetic retinopa tby models, Sirtl could inhibit the retinal chronic inflammation, attenuate the retinal neovascularization and cleavage the metabolic memory of retina cells ; in optic neuritis and glaucoma models, Sirtl protected retinal ganglion cells (RGCs) from apoptosis; in agerelated macular degeneration (AMD) study, Sirtl had been proved to be able to rescue the viability and function of retinal pigment epithelium (RPE) cells in vitro, and decrease the complement factor (CF) Hinduced retinal autoimmunity. On the other hand, Sirtl, as a possi ble angiogenesis factor, may promote choroidal neovascularization, which needs further confirmation. Sirtl might be a potential therapeutic target in retinal diseases.
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