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槲皮素对紫外线损伤NIH3T3细胞的保护作用研究 被引量:2

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摘要 目的:研究紫外对NIH3T3细胞的影响,并探讨槲皮素对NIH3T3细胞的紫外损伤保护作用。方法:建立紫外对NIH3T3细胞的损伤模型。通过不同浓度的槲皮素(1μmol/L、10μmol/L、20μmol/L)的预处理,用MTT方法检测细胞的存活率以及激光共聚焦显微镜检测细胞内活性氧含量和线粒体膜电位变化。结果:紫外损伤后的细胞内活性氧自由基含量明显增加(p<0.05),细胞膜电位下降(p<0.05),细胞凋亡后细胞存活率下降(p<0.05);槲皮素预处理组的细胞内活性氧自由基含量、线粒体膜电位、细胞存活率都呈现出较强的剂量依赖性。结论:紫外损伤可诱导细胞内产生大量的活性氧自由基,使细胞线粒体膜电位下降,降低细胞的存活率;槲皮素预处理后,通过清除细胞内的活性氧自由基,维持细胞的线粒体膜电位,抑制细胞凋亡。
出处 《生命科学仪器》 2008年第5期27-29,共3页 Life Science Instruments
基金 山东理工大学自然科学基金(4040-306018) 山东理工大学博士启动基金项目(4041-406022)
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