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桦菌芝多糖对S180瘤组织p53蛋白表达的影响 被引量:3
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作者 郭丽新 王世龙 冯涛 《中医药信息》 2012年第4期152-153,共2页
目的:观察桦菌芝多糖对小鼠移植型肉瘤(S180)的抑制作用及对瘤组织p53蛋白表达的影响。方法:建立S180小鼠动物模型,取瘤组织称其质量,计算抑瘤率;用链霉菌抗生素蛋白-过氧化酶免疫组化法来测定瘤组织中p53蛋白含量,通过多媒体图像分析... 目的:观察桦菌芝多糖对小鼠移植型肉瘤(S180)的抑制作用及对瘤组织p53蛋白表达的影响。方法:建立S180小鼠动物模型,取瘤组织称其质量,计算抑瘤率;用链霉菌抗生素蛋白-过氧化酶免疫组化法来测定瘤组织中p53蛋白含量,通过多媒体图像分析系统分析实验结果。结果:桦菌芝多糖高、中剂量组抑瘤率分别为41.84%、41.13%,桦菌芝多糖高、中剂量组S180瘤组织突变型p53蛋白表达减少,与模型组比较差异显著(P<0.05)。结论:桦菌芝多糖对小鼠肉瘤S180有抑制作用,可下调小鼠S180瘤组织突变型p53基因表达。 展开更多
关键词 桦菌芝多糖(pfps) 小鼠移植型肉瘤 P53
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An Empirical Estimation of Effects of Priority Forestry Programs on Farmers’ Incomes in China 被引量:1
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作者 LIU Can1 CHEN Hua2 LV Jinzhi1 LI Nannan3 XING Xiangjuan4 1. China National Forestry Economics and Development Research Center, Beijing 100714, P. R. China 2. Department of Economics, Shandong University of Economics and Finance, Ji’nan 250014, P. R.China 3. College of Economics and Management, Beijing Forestry University, Beijing 100081, P. R. China 4. College of Management, Nanjing Audit University, Nanjing 211815, P.R. China 《Chinese Forestry Science and Technology》 2008年第1期1-12,共12页
China has launched six Priority Forestry Programs (PFPs) since 1998, i.e. the Natural Forest Protection Program, the Cropland Conversion to Forest and Grassland Program, Sandification Control Program for the Vicinity ... China has launched six Priority Forestry Programs (PFPs) since 1998, i.e. the Natural Forest Protection Program, the Cropland Conversion to Forest and Grassland Program, Sandification Control Program for the Vicinity of Beijing & Tianjin , Wildlife Conservation and Nature Reserve Development Program, Forest Industrial Base Development Program and Shelterbelt Development Programs for regions such as Three North and the Yangtze River Catchments. The Government of China has made different policies for these PFPs, such as subsidies, low-interest loans and revenue offsets. Using a fixed-effect model and panel data from 2 353 households in 9 counties of Sichuan, Hebei, Shaanxi, and Jiangxi provinces, this paper studies effects of PFPs on farmers’ incomes. The empirical results indicate that the effects of PFPs on farmers’ incomes are mixed. Overall, the impact of Conversion of Cropland to Forestland and Grassland Program is significantly positive, whereas that of the Natural Forest Protection Program and the Sandification Control Program around Beijing & Tianjin is negative. To a lesser extent, the Shelterbelt Development Programs have a positive impact. In the meantime, different effects of PFPs on farmers’ incomes are also mixed for different provinces and different households are also mixed. 展开更多
关键词 Priority Forestry Programs (pfps) farmers’incomes fixed-effect model panel data forest economics
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