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| 1 | Increased mercury pollution revealed by tree rings from the China's Tianshan Mountains显示文摘Mercury (Hg)can be transported globally by the atmospheric circulation and it accumulates and biomagnifies along food chains [1,2].Due to its threats to human health and wildlife when converted to the neurotoxin methyl mercury,variations in Hg concentration in various ecosystems were paid more attention by scientists recently.Natural processes such as geothermal activities, volcanic activities,and weathering of Hg-containing rocks,can release a mass of Hg to the environment.Anthropogenic emissions had become the main atmospheric pollution source since the Industrial Revolution.A recent study indicated that half of the Hg presented in atmosphere was sourced from human activities and about 73%total mercury was released after 1850[3].Aiming to reduce the impact of Hg to environmental and human health,UNEP (United Nations Environment Programme)passed the Minamata Convention in 2013to limit Hg emission through contro|ling technologies on air pollution. | Huhu Kang Xiaohong Liu Junming Guo Guobao Xu Guoju Wu Xiaomin Zeng Bo Wang Shichang Kang | 2018 | Science Bulletin2018，63，20： | 4 |
| 2 | Tree-ring δ^(15)N of Qinghai spruce in the central Qilian Mountains of China:Is pre-treatment of wood samples necessary?显示文摘A knowledge of the tree-ring stable nitrogen isotope ratio(δ^(15)N)can deepen our understanding of forest ecosystem dynamics by indicating the long-term availability,cycling and sources of nitrogen(N).However,the radial mobility of N blurs the interannual variations in the long-term N records.Previous studies of the chemical extraction of tree rings before analysis had produced inconsistent results and it is still unclear whether it is necessary to pre-treat wood samples from specific tree species to remove soluble N compounds before determining theδ^(15)N values.We compared the effects of pre-treatment with organic solvents and hot ultrapure water on the N concentration andδ^(15)N of tree rings from endemic Qinghai spruce(Picea crassifolia)growing in the interior of the central Qilian Mountains,China,during the last 60 a.We assessed the effects of different preparation protocols on the removal of the labile N compounds and investigated the need to pre-treat wood samples before determining theδ^(15)N values of tree rings.Increasing trends of the tree-ring N concentration were consistently observed in both the extracted and unextracted wood samples.The total N removed by extraction with organic solvents was about 17.60%,with a significantly higher amount in the sapwood section(P<0.01).Theδ^(15)N values of tree rings decreased consistently from 1960 to 2019 in both the extracted and unextracted wood samples.Extraction with organic solvents increased theδ^(15)N values markedly by about 5.2‰and reduced the variations in theδ^(15)N series.However,extraction with hot ultrapure water had little effect,with only a slight decrease in theδ^(15)N values of about 0.5‰.Our results showed that the radial pattern in the inter-ring movement of N in Qinghai spruce was not minimized by extraction with either organic solvents or hot ultrapure water.It is unnecessary to conduct hot ultrapure water extraction for the wood samples from Qinghai spruce because of its negligible effect on the removal of the labile N.Theδ^(15)N variation trend of tree rings in the unextracted wood samples was not influenced by the heartwood-sapwood transition zone.We suggest that theδ^(15)N values of the unextracted wood samples of the climate-sensitive Qinghai spruce could be used to explore the ecophysiological dynamics while focusing on the long-term variations. | WANG Ziyi LIU Xiaohong WANG Keyi ZENG Xiaomin ZHANG Yu GE Wensen KANG Huhu LU Qiangqiang | 2022 | Journal of Arid Land2022，14，6： | 1 |
| 3 | The FAPα-activated prodrug Z-GP-DAVLBH inhibits the growth and pulmonary metastasis of osteosarcoma cells by suppressing the AXL pathway显示文摘Osteosarcoma is a kind of bone tumor with highly proliferative and invasive properties,a high incidence of pulmonary metastasis and a poor prognosis.Chemotherapy is the mainstay of treatment for osteosarcoma.Currently,there are no molecular targeted drugs approved for osteosarcoma treatment,particularly effective drugs for osteosarcoma with pulmonary metastases.It has been reported that fibroblast activation protein alpha(FAPa)is upregulated in osteosarcoma and critically associated with osteosarcoma progression and metastasis,demonstrating that FAPa-targeted agents might be a promising therapeutic strategy for osteosarcoma.In the present study,we reported that the FAPa-activated vinblastine prodrug Z-GP-DAVLBH exhibited potent antitumor activities against FAPa-positive osteosarcoma cells in vitro and in vivo.Z-GP-DAVLBH inhibited the growth and induced the apoptosis of osteosarcoma cells.Importantly,it also decreased the migration and invasion capacities and reversed epithelial-mesenchymal transition(EMT)of osteosarcoma cells in vitro and suppressed pulmonary metastasis of osteosarcoma xenografts in vivo.Mechanistically,Z-GP-DAVLBH suppressed the AXL/AKT/GSK-3β/β-catenin pathway,leading to inhibition of the growth and metastatic spread of osteosarcoma cells.These findings demonstrate that Z-GP-DAVLBH is a promising agent for the treatment of FAPa-positive osteosarcoma,particularly osteosarcoma with pulmonary metastases. | Geni Ye Maohua Huang Yong Li Jie Ouyang Minfeng Chen Qing Wen Xiaobo Li Huhu Zeng Pei Long Zepei Fan Junqiang Yin Wencai Ye Dongmei Zhang | 2022 | Acta Pharmaceutica Sinica B2022，12，3： | 1 |
| 4 | 走向我们的小康生活显示文摘Deji Tibetan Family Relocation Area for Poverty Alleviation and Resettlement in Pomona Village,Doilungdeqen District,Lhasa City,Tibet Autonomous Region Photo. | He Guanxin Hu Huhu Wei Shunjiang Chao Yiming Yang Wenbin Yang Ying Liang Zhiqiang Mou Quan Fan Peikun Wu Gang Zhang Hongxiang Chen Bin Zeng Xianghui Jiang Hongjing | 2020 | China's Ethnic Groups2020，，3： | 0 |
| 5 | Dehydro-Diels-Alder reaction and diamondization of bowl-shaped clusters C_(18)Te_(3)Br_(4)(Bu-O)_(6)显示文摘Dehydro-Diels-Alder(DDA)reaction is a textbook reaction for preparing six-membered rings in solution but is scarcely seen in solid-state synthesis.In this work,using multiple characterization techniques,we demonstrate that the bowl-shaped clusters C_(18)Te_(3)Br_(4)(Bu-O)_(6) might experience a DDA reaction at room temperature and high pressure between 5.5 and 7.4 GPa.Above 17.0 GPa,it is found that the bonding conversion from the intramolecular sp^(2) to the intermolecular spa occurred,in the form of pressure-induced diamondization.The recovered samples from 20.0 and 36.1 GPa showed incomplete reversibility,while the decompression-induced graphitization of glassy carbon was observed during decompression from 46.5 GPa.The electrochemical impedance spectroscopy results indicated that the transport properties changed from grain boundary dominant to grain dominant due to the DDA reaction and the grain boundary effect disappeared as the intermolecular sp3 bonding building-up and carrier transmission channel formation above 17.0 GPa.The results in this study open a new route to construct the crystalline carbon materials with different transport properties. | Jinbo Zhang Manli Ma Rong Zhou Hongqiang Chu Xue Wang Shaojie Wang Huhu Tian Zhipeng Yan Mingtao Li Zhongyan Wu Bin Li Jiafeng Yan Lan Anh Thi Nguyen Rongxing Cao Guoqing Wu Xianghua Zeng Hao-Li Zhang Jaeyong Kim Lin Wang Yongjun Tian | 2022 | Nano Research2022，15，5： | 0 |
| 6 | Author correction to“The FAPα-activated prodrug Z-GP-DAVLBH inhibits the growth and pulmonary metastasis of osteosarcoma cells by suppressing the AXL pathway”[Acta Pharm Sin B 12(2022)1288–1304]显示文摘We deeply regret that the representative image of invaded 143B cells treated with Z-GP-DAVLBH + AXL-KD in the lower panel of Fig. 6C was incorrect due to inadvertent mistake of copying and pasting in the process of assembling figures with Adobe Illustrator software. The image has now been corrected, and the quantification of cell invasion in Fig. 6C remains correct. The corrected version of Fig. 6C has been provided below, and the change did not affect the results and conclusions of this study. We have provided the original data of this figure to Editorial Office, and the Editorial Office or the corresponding authors can be contacted for original data access. | Geni Ye Maohua Huang Yong Li Jie Ouyang Minfeng Chen Qing Weng Xiaobo Li Huhu Zeng Pei Long Zepei Fan Junqiang Yin Wencai Ye Dongmei Zhang | 2023 | Acta Pharmaceutica Sinica B2023，13，3： | 0 |
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