目的:研究荞麦花叶总黄酮(extraction of buckwheat flower and leaf EBFL)的体外抗肿瘤作用及其可能的机制。方法:MTT法观察荞麦花叶总黄酮对H22细胞体外增殖的影响,计算肿瘤细胞生长抑制率。流式细胞术观察荞麦花叶总黄酮对H22细胞周...目的:研究荞麦花叶总黄酮(extraction of buckwheat flower and leaf EBFL)的体外抗肿瘤作用及其可能的机制。方法:MTT法观察荞麦花叶总黄酮对H22细胞体外增殖的影响,计算肿瘤细胞生长抑制率。流式细胞术观察荞麦花叶总黄酮对H22细胞周期的影响。PI染色法检测荞麦花叶总黄酮对H22细胞凋亡的影响,计算细胞平均凋亡率。结果:荞麦花叶总黄酮在48h 300μg/ml、150μg/ml浓度对H22细胞增殖具有明显抑制作用,抑制率分别为35.33±1.53,40.33±2.52。EBFL 150μg/ml浓度将肿瘤细胞周期阻止于G0/G1期,抑制肿瘤细胞的分裂增殖。荞麦花叶总黄酮对H22细胞具有明显的促进凋亡作用,以150μg/ml浓度组最为明显。凋亡率48h为40.67±2.08。结论:荞麦花叶总黄酮可直接抑制H22细胞增殖,将H22细胞周期阻止于G0/G1期,促进H22细胞凋亡。展开更多
In melt growth there are facetted and non-facetted growth sections, and longrange strain fields associated with the boundaries of two sections have been observed. In solution growth, similar phenomena have been observ...In melt growth there are facetted and non-facetted growth sections, and longrange strain fields associated with the boundaries of two sections have been observed. In solution growth, similar phenomena have been observed near the boundaries between different growth prisms. In order to elucidate the origin of these long-range strain fields, we have studied the morphology of growth striae on the boundaries between facetted and non-facetted growth sections in Czochralski-grown LiNbO8 single crystals.展开更多
文摘目的:研究荞麦花叶总黄酮(extraction of buckwheat flower and leaf EBFL)的体外抗肿瘤作用及其可能的机制。方法:MTT法观察荞麦花叶总黄酮对H22细胞体外增殖的影响,计算肿瘤细胞生长抑制率。流式细胞术观察荞麦花叶总黄酮对H22细胞周期的影响。PI染色法检测荞麦花叶总黄酮对H22细胞凋亡的影响,计算细胞平均凋亡率。结果:荞麦花叶总黄酮在48h 300μg/ml、150μg/ml浓度对H22细胞增殖具有明显抑制作用,抑制率分别为35.33±1.53,40.33±2.52。EBFL 150μg/ml浓度将肿瘤细胞周期阻止于G0/G1期,抑制肿瘤细胞的分裂增殖。荞麦花叶总黄酮对H22细胞具有明显的促进凋亡作用,以150μg/ml浓度组最为明显。凋亡率48h为40.67±2.08。结论:荞麦花叶总黄酮可直接抑制H22细胞增殖,将H22细胞周期阻止于G0/G1期,促进H22细胞凋亡。
文摘In melt growth there are facetted and non-facetted growth sections, and longrange strain fields associated with the boundaries of two sections have been observed. In solution growth, similar phenomena have been observed near the boundaries between different growth prisms. In order to elucidate the origin of these long-range strain fields, we have studied the morphology of growth striae on the boundaries between facetted and non-facetted growth sections in Czochralski-grown LiNbO8 single crystals.