In 2008 and 2009,we made continuous and repeated breeding surveys of the Scaly-sided Merganser(Mergus squamatus)in the Changbai Mountain range(China side),using a combination of rubber-boat drifting and walking.Each s...In 2008 and 2009,we made continuous and repeated breeding surveys of the Scaly-sided Merganser(Mergus squamatus)in the Changbai Mountain range(China side),using a combination of rubber-boat drifting and walking.Each survey consisted of a census of breeding pairs in the spring and broods in the summer.A total of 1553 km in length of 17 river stretches were surveyed in four different river systems of the Yalujiang,Songhuajiang,Tumenjiang and Mudanjiang rivers.A total of 1354 individuals of the Scaly-sided Merganser were recorded during the both surveys.The breeding density for all the stretches surveyed over both years averaged 0.26 ± 0.30 pairs per km;the population density in the spring averaged 0.75 ± 0.88 individuals per km.According to our survey results,we estimated that the breeding population in the Changbai Mountain range was about 170 breeding pairs of the Scaly-sided Merganser.Three major breeding sites of this bird were found in the Changbai Mountain range in these surveys.展开更多
目的探究lncRNA GClnc1是否通过SIRT3/FOXO3/SOD2调控胃癌细胞增殖和迁移。方法通过转染慢病毒的方法,在人胃癌细胞SGC7901中分别过表达和沉默GClnc1,采用Western blot和qRT-PCR检测SIRT3/FOXO3/SOD2 mRNA和蛋白水平的改变;在过表达GCl...目的探究lncRNA GClnc1是否通过SIRT3/FOXO3/SOD2调控胃癌细胞增殖和迁移。方法通过转染慢病毒的方法,在人胃癌细胞SGC7901中分别过表达和沉默GClnc1,采用Western blot和qRT-PCR检测SIRT3/FOXO3/SOD2 mRNA和蛋白水平的改变;在过表达GClnc1的同时分别沉默SIRT3/FOXO3/SOD2,采用CCK-8检测细胞增殖能力,划痕实验检测细胞迁移能力。结果过表达GClnc1可以上调SIRT3/FOXO3/SOD2的mRNA和蛋白水平(P<0.05),并增强SGC7901细胞的增殖[(1.00±0.14)vs(1.79±0.21),P<0.05]和迁移能力(10.87±0.76 vs 16.53±2.25,P<0.05),而沉默GClnc1则降低SIRT3/FOXO3/SOD2的mRNA和蛋白水平(P<0.05),并减少细胞增殖(1.00±0.14 vs 0.62±0.13,P<0.05)和迁移能力(10.87±0.76 vs 6.46±0.89,P<0.01)。沉默SIRT3/FOXO3/SOD2可以消除过表达GClnc1对细胞增殖和迁移能力的促进作用。结论 GClnc1通过激活SIRT3/FOXO3/SOD2信号通路促进SGC7901细胞增殖和迁移。展开更多
基金sponsored by the Rufford Small Grant of the Rufford Foundation
文摘In 2008 and 2009,we made continuous and repeated breeding surveys of the Scaly-sided Merganser(Mergus squamatus)in the Changbai Mountain range(China side),using a combination of rubber-boat drifting and walking.Each survey consisted of a census of breeding pairs in the spring and broods in the summer.A total of 1553 km in length of 17 river stretches were surveyed in four different river systems of the Yalujiang,Songhuajiang,Tumenjiang and Mudanjiang rivers.A total of 1354 individuals of the Scaly-sided Merganser were recorded during the both surveys.The breeding density for all the stretches surveyed over both years averaged 0.26 ± 0.30 pairs per km;the population density in the spring averaged 0.75 ± 0.88 individuals per km.According to our survey results,we estimated that the breeding population in the Changbai Mountain range was about 170 breeding pairs of the Scaly-sided Merganser.Three major breeding sites of this bird were found in the Changbai Mountain range in these surveys.
文摘目的探究lncRNA GClnc1是否通过SIRT3/FOXO3/SOD2调控胃癌细胞增殖和迁移。方法通过转染慢病毒的方法,在人胃癌细胞SGC7901中分别过表达和沉默GClnc1,采用Western blot和qRT-PCR检测SIRT3/FOXO3/SOD2 mRNA和蛋白水平的改变;在过表达GClnc1的同时分别沉默SIRT3/FOXO3/SOD2,采用CCK-8检测细胞增殖能力,划痕实验检测细胞迁移能力。结果过表达GClnc1可以上调SIRT3/FOXO3/SOD2的mRNA和蛋白水平(P<0.05),并增强SGC7901细胞的增殖[(1.00±0.14)vs(1.79±0.21),P<0.05]和迁移能力(10.87±0.76 vs 16.53±2.25,P<0.05),而沉默GClnc1则降低SIRT3/FOXO3/SOD2的mRNA和蛋白水平(P<0.05),并减少细胞增殖(1.00±0.14 vs 0.62±0.13,P<0.05)和迁移能力(10.87±0.76 vs 6.46±0.89,P<0.01)。沉默SIRT3/FOXO3/SOD2可以消除过表达GClnc1对细胞增殖和迁移能力的促进作用。结论 GClnc1通过激活SIRT3/FOXO3/SOD2信号通路促进SGC7901细胞增殖和迁移。
