目的 凹顶藻萜类化合物(Laurencia terpenoid extract,LTE)是从三列凹顶藻中的提取的一种海洋天然活性物质,具有抑瘤、免疫增强、抗氧化等生物学活性,对酒精暴露大鼠亦具有一定的肝脏保护作用.本实验以LTE为干预物,通过动物实验及肝细胞原代培养,研究LTE对酒精暴露大鼠肝细胞增殖和凋亡的影响.方法 雄性Wistar大鼠40只,随机分为3组,正常对照组10只,酒精模型组和LTE
目的 分析我国多个地区常见食物样品中白藜芦醇及其衍生物的含量与分布，完善我国食物成分数据库.方法 采集我国华南、华北、华西及华中四个代表性地区居民日常食用的蔬菜水果前处理后，用HPLC方法分析我国居民日常植物性膳食中的白藜芦醇及白藜芦醇苷含量.结果 所有检测样品中白藜芦醇总含量最高者为华中地区水果中的红提皮，超过了40 μg/g.蔬菜中白藜芦醇总量最高者当属华西地区的芹菜，达到7.86 μg/g.
In recent years the numbers of dragonflies are decreasing in Japan.However quantitative analysis on the ecosystem of paddy fields had not been finished.Therefore,to analyze present state of ecosystem
In snowy regions,the seasonal runoff pattern is greatly influenced by winter season temperature and precipitation which determines the accumulation and melt of seasonal snowpack.Climate change therefo
A simple soil layer system which is composed of a finer soil (sand) layer underlain by a coarser soil (gravel) layer provides a characteristic property of capillary barrier.Water infiltrating into soi
Colchicaceae comprises 19 genera,which distribute worldwide except for South America.Several genera of this family such as Gloriosa,Sandersonia and Littonia contain horticulturally important plants th
Gibberellins (GAs) are the plant hormones controlling many aspects of plant growth and development in both vegetative and reproductive phases,e.g.germination,stem elongation,leaf expansion,flower init
A bipartite begomovirus,named Corchorus golden mosaic virus (CoGMV) is responsible for great economic losses in jute (Corchorus capsularis,Tilliaceae) by producing endemic disease in different part of
An increase in incidence of diseases like isehemia-reperfusion,atherosclerosis and diabetes is becoming a serious problem in developed countries.Recently,it was shown that molecular hydrogen (H2)has a