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槲皮素抑制离体人微血管内皮细胞增生

机译:槲皮素抑制离体人微血管内皮细胞增生

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AIM: To investigate the role of quercetin (Que) in the proliferation of cultured human skin microvascular endothelial cells (MVEC). METHODS: Cell count and [methyl-3H]thymidine ([3H]TdR) uptake assay were used to measure the effect of Que in the proliferation of cultured MVEC. Cytotoxicity of Que on MVEC was also evaluated by 51Cr release assay. RESULTS: When MVEC were treated with Que, the proliferation was significantly inhibited in a time-course and dose-dependent manner. Que 5 μmol/L did not inhibit the proliferation of MVEC. When the concentration of Que increased to 20, 40, 80, and 160 μmol/L, the cell numbers per well were decreased and the inhibition rate was 12.2 %, 23.5 %, 35.3 %, and 54.1% respectively with IC50 of 138 μmol/L. The inhibitory rate of [3H]-TdR uptake was 18.7 %, 34.4 %, 48.9 %, and 62.5 % respectively (ICs0=87.5 μmol/L). 51Cr release assay showed that Que 160 μmol/L incubated with MVEC from 1 to 16 h had no clear cytotoxicity compared with control group. CONCLUSION: Que greatly inhibited the proliferation of cultured human MVEC in vitro. This effect may not be related to the cytotoxicity of Que on MVEC.
机译:目的:探讨槲皮素(QUE)在培养人体皮肤微血管内皮细胞(MVEC)的增殖中的作用。方法:使用细胞计数和胸苷([3H] TDR)摄取测定测量QUE在培养的MVEC的增殖中的作用。 QUE对MVEC上的细胞毒性也通过51CR释放测定评估。结果:当用QUE处理MVEC时,以时间过程和剂量依赖的方式显着抑制增殖。 que5μmol/ l不抑制MVEC的增殖。当阙浓度增加到20,40,80和160μmol/ L时,每孔的细胞数减少,抑制率分别为12.2%,23.5%,35.3%和54.1%,IC50分别为138μmol/ L. [3H] -TDR摄取的抑制率分别为18.7%,34.4%,48.9%和62.5%(ICS0 =87.5μmol/ L)。 51Cr释放测定显示,与对照组相比,与MVEC孵育的QUE160μmol/ l与1至16小时孵育的que160μmol/ l与对照组相比没有明确的细胞毒性。结论:阙大大抑制了体外培养人体MVEC的增殖。这种效果可能与MVEC上阙的细胞毒性有关。

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