Authors:Wang Rong-shu, Liu Zhong-wen, Chen Jia-xiu, Chen Lei, and Mao Wen-shu
Some results of tests on removing radium from liquid phase by adsorption on barytes are described. The paper demonstrates the mechanism for removal of radium, which is basically a chemical exchange between radium and barium ions on solid surface.
Authors:Chuan-Min Qi, Yong He, Xiao Wang, Man Feng, Jing-Li Xu, Rui Ding, Hang Liu, Yu-Rong Chen, Fang Li, Zhao-Hui Zhu, Yong-Hong Dang, Shu-Ting Zhang, and Ying Xie
d-glucosamine at concentration of certain range could kill tumor cells without influencing normal cells. There are also some
reports on the antitumor activity of d-glucosamine and its derivatives in murine models. It was therefore postulated that d-glucosamine might have the potential to invade tumor cells. We designed and radiosynthesized a glucosamine derivative, N-(2-[18F]fluoro-4-nitrobenzoyl)glucosamine ([18F]FNBG([18F]7)). Evaluations in vitro and in vivo were performed on tumor bearing mice. Excitingly, the radiochemical purity of [18F]FNBG([18F]7) was 99%, and besides the best radiochemical yield was up to 35%. The best T/Bl (Tumor/Blood) and T/M (Tumor/Muscle) ratios
of [18F]FNBG([18F]7) were 4.40 and 4.84. Although [18F]FNBG([18F]7) deserved further studies, the results revealed it might become a potential PET imaging agent for detecting tumors.