Endoplasmic reticulum stress is implicated in retinal inflammation and diabetic retinopathy.

Endoplasmic reticulum stress is implicated in retinal inflammation and diabetic retinopathy.
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内质网应激与视网膜炎症和糖尿病性视网膜病有关。

DOI:
10.1016/j.febslet.2009.04.007
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发表时间:
2009-05-06
期刊:
影响因子:
3.5
通讯作者:
Zhang, Sarah X.
Zhang, Sarah X.
中科院分区:
生物学3区
文献类型:
--
作者:
Li, Jingming;Wang, Joshua J.;Yu, Qiang;Wang, Min;Zhang, Sarah X.

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糖尿病视网膜病变是一种慢性低度炎症性疾病,但其发病机制尚不清楚。在本研究中,我们证明了内质网(ER)应激在糖尿病和氧源性视网膜病变(OIR)动物模型中被激活。衣霉素诱导的内质网应激导致视网膜炎症分子表达显著增加。化学伴侣4-苯基丁酸抑制内质网应激可减轻缺氧培养的人视网膜内皮细胞以及糖尿病和OIR小鼠视网膜的炎症。这些发现表明,内质网应激是糖尿病视网膜病变中视网膜炎症的潜在介质。
Diabetic retinopathy is a chronic low-grade inflammatory disease; however, the mechanisms remain elusive. In the present study, we demonstrated that endoplasmic reticulum (ER) stress was activated in the retina in animal models of diabetes and oxygen-induced retinopathy (OIR). Induction of ER stress by tunicamycin resulted in significantly increased expression of inflammatory molecules in the retina. Inhibition of ER stress by chemical chaperone 4-phenyl butyric acid ameliorated inflammation in cultured human retinal endothelial cells exposed to hypoxia, and in the retinas of diabetic and OIR mice. These findings indicate that ER stress is a potential mediator of retinal inflammation in diabetic retinopathy.
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