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ROS对内皮细胞胞浆游离钙水平的影响
引用本文:林宇,崔红霞,宋娟. ROS对内皮细胞胞浆游离钙水平的影响[J]. 齐齐哈尔医学院学报, 2009, 30(15): 1811-1812
作者姓名:林宇  崔红霞  宋娟
作者单位:齐齐哈尔医学院药理教研室,161042
基金项目:黑龙江省自然科学基金资助 No :ZA2006-05,黑龙江省教育厅科学技术研究项目 NO:11521328 
摘    要:目的探讨活性氧(ROS)在TNFα刺激人脐静脉内皮细胞(HUVEC)胞浆游离钙水平变化中的作用。方法用氧化-还原敏感的荧光探针2,7-Dichlorofluorescein(DCF)检测细胞内氧化-还原水平。用激光共聚焦显微镜检测胞浆游离钙浓度。结果TNFα(200U/ml)处理24h后,HUVEC胞内ROS水平和游离钙浓度均明显升高;NAC(20mmol/L)预处理可明显抑制胞浆内游离钙浓度(P〈0.01)。结论ROS部分介导了TNFα对胞浆内游离钙水平的诱导作用。

关 键 词:活性氧  内皮细胞  

Role of ROS on the cytosolic free calcium in vascular endothelial cells
Affiliation:LIN Yu,et al. (Department of pharmacology, Qiqihar Medical University, Qiqihar, Heilongjiang 161042 ,China)
Abstract:Objective To investigate the roles of reactive oxygen species(ROS) on the eytosolic free calcium(FECa^2+]i) in the endothelial cells stimulated by TNFα. Methods The ROS production in the cells was measured by 2,7 - Dichlorofluorescein(DCF) diacetate as probe; The cytosolic free calcium (F[Ca^2+ -]i) was detected by confocal fluorescence microscope. Results TNFα(200 U/ml) treatment caused an increase in the cytosolic free calcium concentration and the ROS production in HUVECs, which was markedly reduced by pretreatment with NAC(20 mmol/L). Conclusions ROS may play a major role in the TNFα-induced upregulation of F[Ca^2+]i.
Keywords:ROS Endothelial cells Ca2+
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