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| 1 | Mesenchymal stem cells derived from human placenta suppress allogeneic umbilical cord blood lymphocyte proliferation显示文摘ABSTRACTHuman placenta-derived mononuclear cells (MNC) were isolated by a Percoll density gradient and cultured in mesen-chymal stem cell (MSC) maintenance medium. The homogenous layer of adherent cells exhibited a typical fibroblast-like morphology, a large expansive potential, and cell cycle characteristics including a subset of quiescent cells. In vitrodifferentiation assays showed the tripotential differentiation capacity of these cells toward adipogenic, osteogenic andchondrogenic lineages. Flow cytometry analyses and immunocytochemistry stain showed that placental MSC was ahomogeneous cell population devoid of hematopoietic cells, which uniformly expressed CD29, CD44, CD73, CD105,CD166, laminin, fibronectin and vimentin while being negative for expression of CD31, CD34, CD45 and α-smoothmuscle actin. Most importantly, immuno-phenotypic analyses demonstrated that these cells expressed class I majorhistocompatibility complex (MHC-I), but they did not express MHC-II molecules. Additionally these cells could sup-press umbilical cord blood (UCB) lymphocytes proliferation induced by cellular or nonspecific mitogenic stimuli. Thisstrongly implies that they may have potential application in allograft transplantation. Since placenta and UCB arehomogeneous, the MSC derived from human placenta can be transplanted combined with hematopoietic stem cells(HSC) from UCB to reduce the potential graft -versus-host disease (GVHD) in recipients. | Chang Dong LI Wei Yuan ZHANG He Lian LI Xiao Xia JIANG Yi ZHANG Pei Hsien TANG Ning MAO | 2005 | Cell Research2005,15,7: | 36 |
| 2 | Input-occupancy-output models of the non-competitive type and their application - an examination of the China-US trade surplus显示文摘本文构建了一种能够反映中国加工贸易特点的非竞争(进口)型投入占用产出模型,提出了一个国家全部出口与分部门、分大类商品的单位出口对国内增加值和就业的拉动效应的计算方法,从数学上证明了出口总值等于出口商品所包含的完全国内增加值与完全进口额之和,并据此编制了2002年中美两国的非竞争(进口)型投入占用产出表,测算和分析了中美两国出口对各自国内增加值和就业的影响。 | Lawrence J. Lau Xikang Chen Cuihong Yang Leonard K. Cheng K. C. Fung Yun-Wing Sung Kunfu Zhu Jiansuo Pei Zhipeng Tang | 2010 | Social Sciences in China2010,31,1: | 24 |
| 3 | Special Section:SARS-CoV-2 Preliminary evidence from a multicenter prospective observational study of the safety and efficacy of chloroquine for the treatment of COVID-19显示文摘Effective therapies are urgently needed for the SARS-CoV-2 pandemic.Chloroquine has been proved to have antiviral effect against coronavirus in vitro.In this study,we aimed to assess the efficacy and safety of chloroquine with different doses in COVID-19.In this multicenter prospective observational study,we enrolled patients older than 18 years old with confirmed SARS-CoV-2 infection excluding critical cases from 12 hospitals in Guangdong and Hubei Provinces.Eligible patients received chloroquinephosphate s00 mg,orally,once(half dose)or twice(full dose)daily.Patients treated with non-chloroquine therapy were included as historical controls.The primary endpoint is the time to undetectable viral RNA.Secondary outcomes include the proportion of patients with undetectable viral RNA by day 10 and 14,hospitalization time,duration of fever,and adverse events.A total of 197 patients completed chloroquine treatment,and 176patients were included as historical controls.The median time to achieve an undetectable viral RNA was shorter in chloroquine than in non-chloroquine(absolute difference in medians-6.0 days;95%CI-6.0 to—4.0).The duration of fever is shorter in chloroquine(geometric mean ratio 0.6;95%CIO.5 to 0.8).No serious adverse events were observed in the chloroquine group.Patients treated with half dose experienced lower rate of adverse events than with full dose.Although randomized trials are needed for further evaluation,this study provides evidence for safety and efficacy of chloroquine in COVID-19 and suggests that chloroquine can be a cost-effective therapy for combating the COVID-19 pandemic. | Mingxing Huang Man Li Fei Xiao Pengfei Pang Jiabi Liang Tiantian Tang Shaoxuan Liu Binghui Chen Jingxian Shu Yingying You Yang Li Meiwen Tang Jianhui Zhou Guanmin Jiang Jingfen Xiang Wenxin Hong Songmei He Zhaoqin Wang Jianhua Feng Changqing Lin Yinong Ye Zhilong Wu Yaocai Li Bei Zhong Ruilin Sun Zhongsi Hong Jing Liu Huili Chen Xiaohua Wang Zhonghe Li Duanqing Pei Lin Tian Jinyu Xia Shanping Jiang Nanshan Zhong Hong Shan | 2020 | National Science Review2020,7,9: | 20 |
| 4 | Targeting ferroptosis suppresses osteocyte glucolipotoxicity and alleviates diabetic osteoporosis显示文摘Diabetic osteoporosis(DOP) is the leading complication continuously threatening the bone health of patients with diabetes. A key pathogenic factor in DOP is loss of osteocyte viability. However, the mechanism of osteocyte death remains unclear. Here, we identified ferroptosis, which is iron-dependent programmed cell death, as a critical mechanism of osteocyte death in murine models of DOP. The diabetic microenvironment significantly enhanced osteocyte ferroptosis in vitro, as shown by the substantial lipid peroxidation, iron overload, and aberrant activation of the ferroptosis pathway. RNA sequencing showed that heme oxygenase-1(HO-1) expression was notably upregulated in ferroptotic osteocytes. Further findings revealed that HO-1 was essential for osteocyte ferroptosis in DOP and that its promoter activity was controlled by the interaction between the upstream NRF2 and c-JUN transcription factors. Targeting ferroptosis or HO-1 efficiently rescued osteocyte death in DOP by disrupting the vicious cycle between lipid peroxidation and HO-1 activation, eventually ameliorating trabecular deterioration. Our study provides insight into DOP pathogenesis, and our results provide a mechanism-based strategy for clinical DOP treatment. | Yiqi Yang Yixuan Lin Minqi Wang Kai Yuan Qishan Wang Pei Mu Jingke Du Zhifeng Yu Shengbing Yang Kai Huang Yugang Wang Hanjun Li Tingting Tang | 2022 | Bone Research2022,10,3: | 19 |
| 5 | Generation of RAG 1- and 2-deficient rabbits by embryo microinjection of TALENs显示文摘 | Jun Song Juan Zhong Xiaogang Guo Yongqiang Chen Qingjian zou Jiao Huang Xiaoping Li Quanjun Zhang Zhiwu Jiang Chengcheng Tang Huaqiang Yang Tao Liu Peng Li Duanqing Pei Liangxue Lai | 2013 | Cell Research2013,23,8: | 15 |
| 6 | A review on China's constructed wetlands in recent three decades:Application and practice显示文摘Constructed wetlands(CWs)have been introduced to and developed in China for environmental engineering over the most prosperous three decades(1990–2020).To study the origin,development process,and future trend of CWs,this review summarized a wide range of literatures between 1990 and 2020 by Chinese authors.Firstly,the publication number over years,research highlights,and the author contributions with the most published papers in this field were conducted through bibliometric analysis.Secondly,the most principal components of CWs,substrates and macrophytes were summarized and analyzed.Thirdly,the typical application cases from traditional CWs,pond systems to combined pond-wetland systems were presented.In China,CWs were predominately distributed in the east of the so-called'Hu Huanyong Line'.Therefore CWs were limited by the socio-economic level and climatic conditions.It is unquestionable that the overall level of China's CWs has improved significantly,and one of the most prominent features has started towards the plural pattern development.There has been a trend of large-scale or low-cost CW application in the recent years.However,lifecycle research and management are required for better strategies in the future. | Hong Zhang Wenzhong Tang Weidong Wang Wei Yin Honglei Liu Xiaomin Ma Yiqi Zhou Pei Lei Dongyang Wei Litian Zhang Cao Liu Jinmiao Zha | 2021 | Journal of Environmental Sciences2021,33,6: | 13 |
| 7 | Association of miR-502-binding site single nucleotide polymorphism in the 3'-untranslated region of SET8 and TP53 codon 72 polymorphism with non-small cell lung cancer in Chinese population显示文摘这研究的目的是识别是否在 3-untranslated 区域( 3-UTR )的 miR-502-binding 地点单身者核苷酸多型性( SNP )使蛋白质 8 包含域( SET8 )并且肿瘤蛋白质 p53 ( TP53 ) codon 72 多型性为非小的房间肺癌症与风险被联系( NSCLC ),独立地或联合,在从南部的汉的中国人民之中。SET8 和 TP53 codon 的遗传型外部血 DNA 的 72 多型性用在 164 个 NSCLC 盒子和 199 控制上在 casecontrol 研究定序的聚合酶链反应限制碎片长度多型性和直接 DNA 被检测。SET8 TT (机会比率,或 = 2.173, 95% 信心间隔, CI = 1.0454.517 ) 或 TP53 GG (或 = 2.579, 95% CI = 1.3664.870 ) 遗传型被分别地与 SET8 CC 或 TP53 CC 遗传型作比较与 NSCLC 的增加的风险联系。类似的结果在 SET8 后退的模型被获得(或 = 2.074, 95% CI = 1.0194.221, P < 0.05 ) ,并且 TP53 codon 的主导、后退的模型 72 被执行,分别地(或 = 1.809, 95% CI = 1.1592.825, P < 0.05;或 = 1.933, 95% CI = 1.0963.409, P < 0.05 ) 。另外,在 SET8 和 TP53 多型性之间的相互作用增加了 NSCLC 的风险在一多样地举止,与 OR 是 3.032 (95%CI = 1.5805.816 ) 为带 SET8 TT 和 TP53 GG 遗传型的题目。因此,在 SET8 和 TP53 codon 的 3-UTR 的 miR-502-binding 地点 SNP 72 多型性可以是到在中国人口的 NSCLC 的基因危险性的标记,并且在 NSCLC 的发生有一个可能的 genegene 相互作用。 | Shaodi Yang Haiyan Guo Benjie Wei Shengcui Zhu Yanlin Cai Pei Jiang Jianxin Tang | 2014 | Acta Biochimica et Biophysica Sinica2014,46,2: | 12 |
| 8 | The role played by traditional Chinese medicine in preventing and treating COVID-19 in China显示文摘Traditional Chinese medicine(TCM),an ancient system of alternative medicine,played an active role in the prevention and control of COVID-19 in China.It improved the clinical symptoms of patients,reduced the mortality rate,improved the recovery rate,and effectively relieved the operating pressure on the national medical system during critical conditions.In light of the current global pandemic,TCM-related measures might open up a new channel in the control of COVID-19 in other countries and regions.Here,we summarize the TCM-related measures that were widely used in China,including TCM guidelines,the Wuchang pattern,mobile cabin hospitals,integrated treatment of TCM and modern medicine for critical patients,and non-medicine therapy for convalescent patients,and describe how TCM effectively treated patients afflicted with the COVID-19.Effective TCM therapies could,therefore,be recommended and practiced based on the existing medical evidence from increased scientific studies. | Qingwei Li Han Wang Xiuyang Li Yujiao Zheng Yu Wei Pei Zhang Qiyou Ding Jiaran Lin Shuang Tang Yikun Zhao Linhua Zhao Xiaolin Tong | 2020 | Frontiers of Medicine2020,14,5: | 10 |
| 9 | Synthesis of a benzoxazine monomer containing maleimide and allyloxy groups显示文摘新奇 benzoxazine 单体 3-(4-allyloxy )phenyl-3,4-dihydro-2H-6-(N-maleimido )-1,3-benzoxazine (AMB ) 被综合,结构被英尺红外证实,(1 ) H NMR。AMB 的热分析(DSC ) 证明烯丙氧基组的介绍减少了熔点并且展出了一扇狭窄、对称的治好的发热的窗户。 | Yan Tang Qing Lai Zhao Ke Zeng Pei Kai Miao Ke Zhou Wen Rui Tang Hong Fei Zhou Tao Liu Yi Peng Wang Gang Yang | 2007 | Chinese Chemical Letters2007,18,8: | 10 |
| 10 | Mangiferin inhibited neuroinflammation through regulating microglial polarization and suppressing NF-κB,NLRP3 pathway显示文摘Inflammation plays important roles in the progress of neurodegenerative diseases,such as Parkinson’s disease and Alzheimer’s disease.Microglia is responsible for the homeostasis of the central nervous system(CNS),and involved in the neuroinflammation.Therefore,it could be potential in treatment of neurodegenerative diseases to suppress the microglia-mediated neuroinflammation.Mangiferin,a major glucoside of xanthone in Anemarrhena Rhizome,has anti-inflammatory,anti-diabetes,and anti-oxidative properties.However,the effect of mangiferin on the inflammatary responses of microglia cells are still poorly understand.In this study,we investigated the mechanism by which mangiferin inhibited inflammation in LPS-induced BV2 microglia cells.BV2 cells were pretreatment with mangiferin followed by LPS stimulation.In vitro assays,NO and cytokines production were quantified.Western blot and immunocytochemistry were used to examine the effect of mangiferin on the polarization of BV2 cells and signaling pathway.The results showed that mangiferin treatment significantly reduced NO,IL-1β,IL-6 and TNF-αproduction,also reduced the mRNA and protein of iNOS and COX-2,promoted the polarization of inflammatory toward anti-inflammatory,and inhibited activation of NF-κB and NLRP3 inflammasome.These data suggest that mangiferin has an anti-neuroinflammatory property via regulating microglia macrophage polarization and suppressing NF-κB and NLRP3 signaling pathway,and may act as a potential natural therapeutic candidate for neuroinflammatory diseases. | LEI Li-Yan WANG Rui-Cheng PAN Ya-Lei YUE Zheng-Gang ZHOU Rui XIE Pei TANG Zhi-Shu | 2021 | Chinese Journal of Natural Medicines2021,19,2: | 10 |
| 11 | Rainfall and Tillage Impacts on Soil Erosion of Sloping Cropland with Subtropical Monsoon Climate- A Case Study in Hilly Purple Soil area, China显示文摘Under global warming, storm events tend to intensify, particularly in monsoon-affected regions.As an important agricultural area in China, the purple soil region in the Sichuan Basin, where it has a prevailing monsoon climate, is threatened by serious soil erosion. Tillage operations alter runoff and soil erosion processes on croplands by changing the physical properties of the soil surface. To clarify the relationship between tillage and soil erosion in the purple soil region, three different tillage practices in this region were investigated at the plot scale over 4 years: bare land with minimum tillage(BL),conventional tillage(CT) and seasonal no-tillage ridges(SNTR) which was initially designed to prevent soil erosion by contoured ridges and no-tillage techniques. The results showed that although there were no significant differences in the surface runoff and soil erosion among the three practices, BL causedrelatively high surface runoff and soil erosion,followed by CT and SNTR. Classification and comparison of the rainfall events based on cluster analysis(CA) verified that the surface runoff was not significantly different between most intensive event and long intensive events but was significantly different between most intensive and short and medium-duration events. Only the rainfall events with the highest rainfall intensity could trigger serious soil erosion, up to 1000 kg ha-1 in the region. Further detailed investigations on the effects of tillage operations on the soil erosion in a subtropical region with a monsoon climate are needed to provide a basis for modeling catchments and designing better management practices. | TANG Jia-liang CHENG Xun-qiang ZHU Bo GAO Mei-rong WANG Tao ZHANG Xi-feng ZHAO Pei YOU Xiang | 2015 | Journal of Mountain Science2015,12,1: | 9 |
| 12 | Impact of Proton-pump Inhibitors on the Pharmacodynamic Effect and Clinical Outcomes in Patients Receiving Dual Antiplatelet Therapy after Percutaneous Coronary Intervention: A Propensity Score Analysis显示文摘 | Pei Zhu Zhan Gao Xiao-Fang Tang Jing-Jing Xu Yin Zhang Li-Jian Gao Jue Chen Shu-Bin Qiao Yue-Jin Yang Run-Lin Gao Bo Xu Jin-Qing Yuan | 2017 | Chinese Medical Journal2017,,24: | 8 |
| 13 | Effect of discrete fibre reinforcement on soil tensile strength显示文摘The tensile behaviour of soil plays a significantly important role in various engineering applications.Compacted soils used in geotechnical constructions such as dams and clayey liners in waste containment facilities can suffer from cracking due to tensile failure.In order to increase soil tensile strength,discrete fibre reinforcement technique was proposed.An innovative tensile apparatus was developed to determine the tensile strength characteristics of fibre reinforced soil.The effects of fibre content,dry density and water content on the tensile strength were studied.The results indicate that the developed test apparatus was applicable in determining tensile strength of soils.Fibre inclusion can significantly increase soil tensile strength and soil tensile failure ductility.The tensile strength basically increases with increasing fibre content.As the fibre content increases from 0%to 0.2%,the tensile strength increases by65.7%.The tensile strength of fibre reinforced soil increases with increasing dry density and decreases with decreasing water content.For instance,the tensile strength at a dry density of 1.7 Mg/m^3 is 2.8times higher than that at 1.4 Mg/m^3.It decreases by 30%as the water content increases from 14.5%to20.5%.Furthermore,it is observed that the tensile strength of fibre reinforced soil is dominated by fibre pull-out resistance,depending on the interfacial mechanical interaction between fibre surface and soil matrix. | Jian Li Chaosheng Tang Deying Wang Xiangjun Pei Bin Shi | 2014 | Journal of Rock Mechanics and Geotechnical Engineering2014,6,2: | 8 |
| 14 | Spinel MnCo2O4 nanoparticles cross-linked with two-dimensional porous carbon nanosheets as a high-efficiency oxygen reduction electrocatalyst显示文摘为氧减小反应(ORR ) 的催化剂在燃料房间起一个重要作用。有到基于磅的催化剂的可比较的 ORR 活动的其他的非宝贵的金属催化剂为燃料房间的发展是高度合乎需要的。在这个工作,我们第一次报导尖晶石 MnCo 2 O 4/C ORR 催化剂由一致 MnCo 2 O 4 nanoparticles cross-linked 与二维( 2D )多孔的碳 nanosheets (缩短的同样多孔的 MnCo 2 O 4/C nanosheets ),在哪个葡萄糖作为模板被用作碳来源和 NaCl 。获得的多孔的 MnCo 2 在场的 O 4/C nanosheets 互连的多孔的体系结构和一个大表面区域的联合性质(175.3 m 2( | Gengtao Fu Zhenyuan Liu Jingfei Zhang Jiayan Wu Lin Xu Dongmei Sun Jubing Zhang Yawen Tang Pei Chen | 2016 | Nano Research2016,9,7: | 7 |
| 15 | Surface enhanced Raman spectroscopy signals of mixed pesticides and their identification显示文摘A rapid and sensitive method to identify and analyze mixed pesticides of tricyclazole,paraquat and flusilazole by surface-enhanced Raman scattering has been reported.Aqueous samples can be detected by SERS in low concentrations of 0.01 mg/L, 0.1 mg/L and 2.85 mg/L for individual tricyclazole,paraquat and flusilazole respectively.When mixing the three pesticides in the low concentrations,their characteristic peaks can still be identified from the SERS spectrum of the mixture. | Hui Rong Tang Qing Qing Li Yu Lan Ren Jin Pei Geng Peng Cao Tao Sui Xuan Wang Yi Ping Du | 2011 | Chinese Chemical Letters2011,22,12: | 7 |
| 16 | Intensive phototherapy vs.exchange transfusion for the treatment of neonatal hyperbilirubinemia:a multicenter retrospective cohort study显示文摘Background:Intensive phototherapy(IPT)and exchange transfusion(ET)are the main treatments for extreme hyperbilirubinemia.However,there is no reliable evidence on determining the thresholds for these treatments.This multicenter study compared the effectiveness and complications of IPT and ET in the treatment of extreme hyperbilirubinemia.Methods:This retrospective cohort study was conducted in seven centers from January 2015 to January 2018.Patients with extreme hyperbilirubinemia that met the criteria of ET were included.Patients were divided into three subgroups(low-,medium-,and high-risk)according to gestational week and risk factors.Propensity score matching(PSM)was performed to balance the data before treatment.Study outcomes included the development of bilirubin encephalopathy,duration of hospitalization,expenses,and complications.Mortality,auditory complications,seizures,enamel dysplasia,ocular motility disorders,athetosis,motor,and language development were evaluated during follow-up at age of 3 years.Results:A total of 1164 patients were included in this study.After PSM,296 patients in the IPT only group and 296 patients in the IPT plus ET group were further divided into the low-,medium-,and high-risk subgroups with 188,364,and 40 matched patients,respectively.No significant differences were found between the IPT only and IPT plus ET groups in terms of morbidity,complications,and sequelae.Hospitalization duration and expenses were lower in the low-and medium-risk subgroups in the IPT only group.Conclusions:In this study,our results suggest that IPT is a safe and effective treatment for extreme hyperbilirubinemia.The indication of ET for patients with hyperbilirubinemia could be stricter.However,it is necessary to have a contingency plan for emergency ET as soon as IPT is commenced especially for infants with risk factors.If IPT can be guaranteed and proved to be therapeutic,ET should be avoided as much as possible. | Meng Zhang Yang He Jun Tang Wenbin Dong Yong Zhang Benjin Zhang Hong Wan Quanmin Deng Lirong Guan Bin Xia Zhong Chen Min Ge Jing Zhao Wenxing Li Jingjun Pei Yi Qu Dezhi Mu | 2022 | Chinese Medical Journal2022,,5: | 7 |
| 17 | Virtual Evaluation on the Activities of Phthalides and Terpenoids from Angelica sinensis显示文摘Objective To elucidate potential activities of phthalides and terpenoids from Angelica sinensis by theoretical docking calculation. Methods Eleven components of phthalides and terpenoids were selected as ligand. The crystalline structures of targets related to common diseases were used as the receptors for calculation. The calculations were conducted with Schr?dinger software package. The grading standard of selectivity was developed according to G-score between ligands and receptors. Results Selective targets of phthalides and terpenoids were related to nevous system diseases, cancer, pain, diabetes, cardiovascular disease, liver cirrhosis, nephrotic syndrome, inflammatory diseases, rheumatoid arthritis, dermatosis, leukemia, microbial inflections, immune diseases, and hypercholesterolemia. In addition to the medical treatments reported in the literature, our research also indicated that these two classes of compounds may be used for tumor, diabetes, rheumatoid arthritis, dermatosis, leukemia, liver cirrhosis, and nephrotic syndrome. According to our research, the effects of phthalides and terpenoids may be not so strong. Conclusion The effects of phthalides and terpenoids on diseases founded through virtual evaluation accord greatly with those reported in experiment and clinic. The combination of computer-aided drug evaluation technique and experiment is definitely an important and fast way to investigate the effects and mechanisms of traditional Chinese medicine. | PEI Yuan1,2, TAN Chu-bing1, XU Wei-ren1, LIU Peng1, LIU Bing-ni1, LIU Wei1, CHEN Cheng-lung3, TANG Li-da1 1. Tianjin Key Laboratory of Molecular Design and Drug Discovery, Tianjin Institute of Pharmaceutical Research, Tianjin 300193, China 2. Basic Medical College, Tianjin Medical University, Tianjin 300070, China 3. Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, China | 2010 | Chinese Herbal Medicines2010,2,3: | 6 |
| 18 | Effect of Air Injector on the Performance of an Air-lift for Conveying River Sand显示文摘An air-lift has been more recently applied in the dredging, deep-seated beach placer mining and underground mining engineering. However, the influence and mechanism of various parameters on the air-lift performance are not quite clear, especially the influence of flow pattern on lifting efficiency. Focusing on the problems mentioned above, the key part of the air-lift (namely, the air injector) was proposed aimed to reduce friction loss in the inner pipe according to improving flow field performance, thus increase the lifting efficiency. The study of relative factors of the performance of an air-lift is performed and the river sand is used as simulation of underground ore bed. The total lifting height of the experimental system is 3 m, the water flux, mass flow of solid particles, concentration of particles and lifting efficiency are measured under the same submergence ratios by changing the air injector, which is divided into nine specifications of air injection in this research. The experimental results indicate that the optimal air flow rate corresponding to excellent performance of the air-lift can be obtained in the range of 35–40 m3/h. The air injection method has a great effect on the performance of the air-lift, the air injector with three nozzles is better than that in the case of one or two nozzles. Further more, the air injection angle and arrangement of air injection pipes also have great effect on the performance of an air-lift. The proposed research results have guiding significance for engineering application. | TANG Chuanlin HU Dong PEI Jianghong YANG Lin | 2010 | Chinese Journal of Mechanical Engineering2010,23,1: | 6 |
| 19 | Neuroprotectants attenuate hypobaric hypoxia-induced brain injuries in cynomolgus monkeys显示文摘Hypobaric hypoxia (HH) exposure can cause serious brain injury as well as life-threatening cerebral edema in severe cases. Previous studies on the mechanisms of HH-induced brain injury have been conducted primarily using non-primate animal models that are genetically distant to humans, thus hindering the development of disease treatment. Here, we report that cynomolgus monkeys (Macaca fascicularis) exposed to acute HH developed human-like HH syndrome involving severe brain injury and abnormal behavior. Transcriptome profiling of white blood cells and brain tissue from monkeys exposed to increasing altitude revealed the central role of the HIF-1 and other novel signaling pathways, such as the vitamin D receptor (VDR) signaling pathway, in co-regulating HH-induced inflammation processes. We also observed profound transcriptomic alterations in brains after exposure to acute HH, including the activation of angiogenesis and impairment of aerobic respiration and protein folding processes, which likely underlie the pathological effects of HH-induced brain injury. Administration of progesterone (PROG) and steroid neuroprotectant 5α-androst-3β,5,6β-triol (TRIOL) significantly attenuated brain injuries and rescued the transcriptomic changes induced by acute HH. Functional investigation of the affected genes suggested that these two neuroprotectants protect the brain by targeting different pathways, with PROG enhancing erythropoiesis and TRIOL suppressing glutamate-induced excitotoxicity. Thus, this study advances our understanding of the pathology induced by acute HH and provides potential compounds for the development of neuroprotectant drugs for therapeutic treatment. | Pei Zhang Jie-Si Chen Qi-Ye Li Long-Xiang Sheng Yi-Xing Gao Bing-Zheng Lu Wen-Bo Zhu Xiao-Yu Zhan Yuan Li Zhi-Bing Yuan Gang Xu Bi-Tao Qiu Min Yan Chun-Xue Guo You-Qiong Wang Yi-Jun Huang Jing-Xia Zhang Fu-Yu Liu Zhong-Wei Tang Sui-Zhen Lin David NCooper Huan-Ming Yang Jian Wang Yu-Qi Gao Wei Yin Guo-Jie Zhang Guang-Mei Yan | 2020 | Zoological Research2020,41,1: | 6 |
| 20 | In situ zircon Hf isotopic, U-Pb age and trace element study of monzonite xenoliths from Pingquan and Fuxin basalts: Tracking the thermal events of 169 Ma and 107 Ma in Yanliao area显示文摘K-Ar ages of the Mesozoic (92-100 Ma) Fuxin alkalic basalts (western Liaoning Province) and the Tertiary (23-45 Ma) Pingquan alkalic basalts (eastern Hebei Province), and the results of in situ zircon U-Pb dating, Hf isotope and the trace elements from three monzonite xenoliths carried in the alkalic basalts are reported. The crust-mantle interaction occurring in the Yanshan intracontinental orogenic belt is also discussed. Fuxin zircons show highly uniform U-Pb age ((1693) Ma). More than 95% Pingquan zircons display the age of (107?0) Ma except two are 2491 Ma and 513 Ma respectively. Zircons with the ages of (169?) Ma have eHf close to zero. eHf of the zircons with the ages of (10710) Ma are mainly at -11.5--16.3, showing the crustal derivation. Fuxin zircons contain low Nb, Ta, Sr, Th, U contents, low and narrow Hf model ages (0.87-1.00 Ga), which reflect that the source materials of the monzonite xenoliths are young to Pingquan (focus at (1.280.08) Ga). High contents of the incompatible elements, and wide range of Hf model ages (0.89-2.56 Ga) in Pingquan zircons suggest a more complex source and the highly crustal maturity in their petrogenesis. Comprehensive information including the published data indicates that J3-K1 is the key period of the deep processes and shallow tectonic reverse in the Yanliao area. However, the processes were highly heterogeneous in spatial and in temporal. | ZHENG Jianping ZHANG Ruisheng YU Chunmei TANG Huayun ZHANG Pei | 2004 | Science China Earth Sciences2004,47,z2: | 6 |