Puerarin antagonizes peroxyntrite-induced injury in retinal pigment epithelial cells

被引:2
作者
Hao, Lina [1 ]
Zhang, Xudong [2 ]
Yang, Tao [3 ]
Ma, Junling [1 ]
机构
[1] Hebei Prov Peoples Hosp, Dept Ophthalmol, Shijiazhuang 050051, Hebei Province, Peoples R China
[2] Hebei Prov Peoples Hosp, Dept Pharmaceut, Shijiazhuang 050051, Hebei Province, Peoples R China
[3] Hebei Med Univ, Hosp 1, Internal Dept, Shijiazhuang 050031, Hebei Province, Peoples R China
基金
中国国家自然科学基金;
关键词
apoptosis; Fas/FasL; inducible nitric oxide synthase; oxidative stress; puerarin; retinal pigment epithelial cells; NITRIC-OXIDE SYNTHASE; DIABETIC-RATS; PEROXYNITRITE; EXPRESSION; APOPTOSIS; OXIDATION; STIMULI; PATHWAY; SHEETS;
D O I
10.3969/j.issn.1673-5374.2012.09.005
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
A rat model of diabetes mellitus was established by intraperitoneal injection of streptozotocin. Three days later, the rats were intraperitoneally administered 140 mg puerarin/kg daily, for a total of 60 successive days. DNA ladder results showed increased apoptosis over time in retinal pigment epithelial cells from rats with streptozotocin-induced diabetes mellitus. Western blot analysis, Reverse transcription-PCR, immunohistochemistry, and flow cytometry results showed increased expression of 3-nitrotyrosine, a peroxyntrite marker, as well as inducible nitric synthase and Fas/FasL, in retinal pigment epithelial cells. Puerarin reversed these changes, and results demonstrated that puerarin inhibited Fas/FasL expression and alleviated peroxyntrite injury to retinal pigment epithelial cells. These results suggested that puerarin inhibited production of inducible nitric oxide synthase and directly antagonized peroxyntrite injury in retinal pigment epithelial cells.
引用
收藏
页码:669 / 674
页数:6
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