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1436篇 您的检索式:作者名="Teng Zhang"
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1Sodium oligomannate therapeutically remodels gut microbiota and suppresses gut bacterial amino acids-shaped neuroinflammation to inhibit Alzheimer's disease progression显示文摘Recently,increasing evidence has suggested the association between gut dysbiosis and Alzheimer's disease(AD)progression,yet the role of gut microbiota in AD pathogenesis remains obscure.Herein,we provide a potential mechanistic link between gut microbiota dysbiosis and neuroinflammation in AD progression.Using AD mouse models,we discovered that,during AD progression,the alteration of gut microbiota composition leads to the peripheral accumulation of phenylalanine and isoleucine,which stimulates the differentiation and proliferation of pro-inflammatory T helper 1(Thl)cells.The brain-infiltrated peripheral Th1 immune cells are associated with the Ml microglia aaivation,contributing to AD-associated neuroinflammation.Importantly,the elevation of phenylalanine and isoleucine concentrations and the increase of Th1 cell frequency in the blood were also observed in two small independent cohorts of patients with mild cognitive impairment(MCI)due to AD.Furthermore,GV-971,a sodium oligomannate that has demonstrated solid and consistent cognition improvement in a phase 3 clinical trial in China,suppresses gut dysbiosis and the associated phenylalanine/isoleucine accumulation,harnesses neuroinflammation and reverses the cognition impairment.Together,our findings highlight the role of gut dysbiosis-promoted neuroinflammation in AD progression and suggest a novel strategy for AD therapy by remodelling the gut microbiota.Xinyi Wang Guangqiang Sun Teng Feng Jing Zhang Xun Huang Tao Wang Zuoquan Xie Xingkun Chu Jun Yang Huan Wang Shuaishuai Chang Yanxue Gong Lingfei Ruan Guanqun Zhang Siyuan Yan Wen Lian Chen Du Dabing Yang Qingli Zhang Feifei Lin Jia Liu Haiyan Zhang Changrong Ge Shifu Xiao Jian Ding Meiyu Geng 2019Cell Research2019,29,10:192
2Mettl3-/Mettl14-mediated mRNA N6-methyladenosine modulates murine spermatogenesis显示文摘精子发生在双 spermatogonial 干细胞(SSC ) 哪个生产 haploid 精子期间是一个区别过程。这个高度专业化的过程精确在 transcriptional, posttranscriptional,和翻译层次被控制。这里,我们报导那 N 6-methyladenosine (m 6 一) ,调整基因表示的一个 epitranscriptomic 标记,在精子发生期间起必要作用。我们现在的全面 m 6 从五个发展阶段的老鼠 spermatogenic 房间的 mRNA methylomes:无差别的 spermatogonia,类型 A 1 spermatogonia, preleptotene spermatocytes, pachytene/diplotene spermatocytes,和圆 spermatids。m 6 有 Vasa-Cre 的 RNA methyltransferase Mettl3 或 Mettl14 引起 m 6 SSC 的 A 和弄空。m 6 为 SSC 增长 / 区别被要求的抄本的一个弄空 dysregulates 翻译。在有 Stra8-GFPCre 的先进细菌房间的 Mettl3 和 Mettl14 的联合删除破坏精子形式,而有在先进细菌房间的 Mettl3 或 Mettl14 的单个删除的老鼠显示出正常精子发生。从双异种老鼠展览的 spermatids 损害了为精子形式是必要的 haploid 特定的基因的翻译。这研究加亮 mRNA m 6 在 germline 开发的修正,潜在地保证在精子发生的不同阶段协调了翻译。Zhen Lin Phillip J Hsu Xudong Xing Jianhuo Fang Zhike Lu Qin Zou Ke-Jia Zhang Xiao Zhang Yuchuan Zhou Teng Zhang Youcheng Zhang Wanlu Song Guifang Jia Xuerui Yang Chuan He Ming-Han Tong 2017Cell Research2017,27,10:61
3Cardioprotection of sevoflurane postconditioning by activating extracellular signal-regulated kinase 1/2 in isolated rat hearts^1显示文摘瞄准:1/2 免于的细胞外的调整信号的 kinase (英皇家空军之阶级最低之兵) 的激活是化学家灌注损害。ERK1/2 是否调停 sevoflurane 柱子调节的 cardioprotection 是未知的。我们测试了 sevoflurane 柱子调节是否经由 ERK1/2-depen-dent 机制生产 cardioprotection。方法:在协议 1 , 酒Langendorff 的 Sprague Dawley 老鼠心( n=84 , 12 每组)与假冒的组的异常,受到 90 min 灌注跟随的 30 min 局部缺血并且被分到未经治疗(控制)组,由 4 个周期列在后面是化学家帖子调节(各个的 25 s ),3%( v/v ) sevoflurane 帖子调节(为 5 min 和冲刷的 10 min ),并且 PD98059 溶剂 DMSO (<0.2%), ERK1/2 禁止者 PD98059 ( 20 μmol/L ),和 Sevo+PD 管理。在平衡的 30 min 的左室的 hemodynamics 和冠的流动分别地在灌注的 30, 60,和 90 min 被记录。尖锐梗塞尺寸被 triphenyltetrazolium 氯化物染色测量。线粒体的配置被一台电子显微镜观察。西方的污点分析被用来在灌注的结束决定 cytosolic 和 mitochondrial 细胞色素 c 的内容。在协议 2,在灌注的 15 min 以后,总数的表示和 ERK1/2 和它的下游的目标 p70S6K 的 phosphorylated 形式由西方的弄污是坚定的。结果:在基线 hemodynamics 的差别都没在试验性的组(P>0.05 ) 之中被观察。在灌注以后,与控制组相比, sevoflurane 柱子调节并且显著地是化学家柱子调节(P<0.05 ) 改进了功能的恢复并且(P<0.05 ) 大部分减少了心肌的梗塞尺寸(22.9%± 4 .6% 和 21.2%± 3 .8% ,对 39.4%± 5 .7% ,两 P<0.05 ) 。调停 Sevoflurane 的保护被 PD98059 废除。结论:由 sevoflurane 的麻药柱子调节有效地由在 vitro 激活 ERK1/2 免于灌注损坏。Hong-tao CHEN Cheng-xiang YANG Heng LI Cheng-jing ZHANG Xian-jie WEN Jun ZHOU You-ling Fan Teng HUANG Yin-ming ZENG 2008Acta Pharmacologica Sinica2008,29,8:41
4Evidence chain-based causality identification in herb-induced liver injury: exemplification of a well-known liver-restorative herb Polygonum multiflorum显示文摘草药的药最近在美国作为导致药的肝损害(DILI ) 的第二个很普通的原因被认出了。然而,识别一些植物的 DILI 诱发性的可靠方法例如 Heshouwu (蓼 multiflorum 的弄干的根) ,留下缺乏。在这研究,有肝机能障碍和 Heshouwu DILI 的 147 个报导文学的案例的 12 307 个住院病人的一个总数被屏蔽。一个一般算法仅仅显示了那 22.5%(9/40 ) 并且(45/147 ) 分别地, 30.6% 所有住院和文学案例报告表明 Heshouwu 的 DILI 诱发性的高概率。由对比,(19/20 )95% 生药学,植物化学,和 metabolomic 有希望地调查的所有情况测试展出高度可能的诱发性,包括不正确地以前被归因的一个病人和从由 pharmacognostic 证据的 Heshouwu 诱发性被排除的一个案例。污染也是的毒素(重金属,杀虫剂,和 mycotoxins ) 从 Heshouwu DILI 诱发性排除了。为 Heshouwu DILI 诊断地址安全的这些屏蔽方法的客观性担心考虑包含芪的草药的药和饮食的补充。Jiabo Wang Zhijie Ma Ming Niu Yun Zhu Qingsheng Liang Yanling Zhao Jingyuan Song Zhaofang Bai Yaming Zhang Ping Zhang Na Li Yakun Meng Qi Li Lushan Qin Guangju Teng Junling Cao Baosen Li Shilin Chen Yonggang Li Zhengsheng Zou Honghao Zhou Xiaohe Xiao 2015Frontiers of Medicine2015,9,4:47
5Hepatoprotective role of ganoderma lucidum polysaccharide against BCG-induced immune liver injury in mice显示文摘AIM: To examine the effect of ganoderma lucidumpolysaccharide (GLP) on the immune liver injuryinduced by BCG infection, and investigate therelationship between degrees of hepatic damage andNO production in mice.METHODS: Immune hepatic injury was markedlyinduced by BCG-pretreatment (125 mg.kg-1, 2-week, iv)or by BCG-pretreatment plus lipopolysaccharide (LPS,125 μg.kg-1, 12-hour, iv) in mice in vivo.Hepatocellulardamage induced by BCG-pretreated plus inflammatorycytokines mixture (CM), which was included TNF-α, IL1β, IFN-γ and LPS in culture medium in vitro.Administration of GLP was performed by oral orincubating with culture medium at immune stimulisimultaneity. Liver damage was determined by activityof alanine aminotransferase (ALT) in serum and inhepatocytes cultured supernatant, by liver weightchanges and histopathological examination. NOproduction in the cultured supematant was determinedby the Griess reaction. Moreover, inducible nitric oxidesynthase (iNOS) protein expression was alsoexaminated by immunohistochemi1cal method.RESULTS: Immune hepatic injury was markedly inducedby BCG or BCG plus inflammatory cytokines in BALB/cmice in vivoand in vitro. Under BCG-stimulated condition,augment of the liver weight and increase of the serum/supernatant ALT level were observed, as well asgranuloma forming and inflammatory cells soakage wereobserved by microscopic analysis within liver tissues.Moreover, NO production was also increased by BCG or/and CH stimuli in the culture supernatant, and a lot ofiNOS positive staining was observed in BCG-prestimulated hepatic sections. Application of GLPsignificantly mitigated hepatic tumefaction, decreasedALT enzyme release and NO production in serum/supernatant, improved the pathological changes ofchronic and acute inflammation induced by BCG-stimuliin mice. Moreover, the immunohistochemical resultshowed that GLP inhibited iNOS protein expression inBCG-immune hepatic damage model.CONCLUSION: The present study indicates that NOparticipates in immune liver injury induced byMycobacterium bovis BCG infection. The mechanismsof protective roles by GLP for BCG-induced immune liverinjury may be due to influence NO production in mice.Guo-Liang Zhang Ye-Hong Wang Wei Ni Hui-Ling Teng Zhi-Bin Lin Department of Pharmacology,School of Basic Medical Sciences,Beijing University,Beijing 100083,China 2002World Journal of Gastroenterology2002,8,4:47
6The crustal structure under Sanjiang and its dynamic implications:Revealed by seismic reflection/refraction profile between Zhefang and Binchuan,Yunnan显示文摘The fault belts in Sanjiang mainly include Jinshajiang-Honghe fault, Lancangjiang fault and Nujiang fault (called Sanjiang faults) in western Yunnan Province, China. By interpreting the wide-angle seismic reflection/refraction profile between Zhefang and Binchuan, which crosses Tengchong and Baoshan blocks in Dianxi (western Yunnan) tectonic zone, we recon- struct the crustal structure with seismic traveltime tomography for crustal P-wave velocity and the seismic scattering image for crustal seismic reflection structure. In this paper, we firstly present the crustal structure images of P-wave velocity and seismic reflection under the wide-angle seismic profile. These results demonstrate that, the crustal velocity structure and seismic reflec- tion structure along the profile can be divided into 3 segments, and there is an obvious difference of crustal structure among the eastern, the western and the middle segment. Generally, crustal P-wave velocities in the Baoshan segment are 0.1―0.2 km/s slower and seismic reflection am- plitudes from Moho discontinuity are stronger than the other 2 segments. In the studied area, crustal thickness is about 40 km, and shows the thickening tendency from west to east along the profile. Additionally, it can be seen that there is one strong-amplitude seismic reflection event as bright points at the depths of 8―10 km, along the segment of 80―115 km of the profile (south- ward of Tengchong); and seismic reflection wave-field from Moho discontinuity varies obviously along the lateral direction. Finally, we make some discussions on the crustal thickening pattern in the Sanjiang fault belt, structural environment of earthquake development and the contact rela- tionship between the Tengchong block, Banshan block and Luxi trough.ZHANG Zhongjie1, BAI Zhiming1, WANG Chunyong2, TENG Jiwen1, Lü Qingtian3, LI Jiliang1, LIU Yifeng1 & LIU Zhenkuan4 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2. Institute of Geophysics, China Seismological Bureau, Beijing 100085, China 3. Institute of Deposition Resource, Chinese Academy of Geosciences, Beijing 100037, China 4. School of Exploration and Information, China University of Geosciences, Beijing 100083, China 2005Science China Earth Sciences2005,48,9:39
7Crustal velocity structure in the Emeishan large igneous province and evidence of the Permian mantle plume activity显示文摘The Emeishan large igneous province(ELIP) in SW China is interpreted to be associated with an ancient mantle plume. Most of the constraints on the role of mantle plume in the generation of the Emeishan flood basalts were provided by geological and geochemical methods, but the geophysical investigation is very limited. In order to better understand the deep structure and features of ELIP, we have studied the crustal velocity structure using the data acquired from the Lijiang-Panzhihua-Qingzhen wide-angle seismic profile. This profile crosses the three sub-zones of the ELIP(the inner, intermediate, and outer zones), divided based on the differential erosion and uplift of the Maokou limestone. The results provided by the active source seismic experiment demonstrate:(1) The average depth of the crystalline basement along the profile is about 2 km.(2) The middle crust in the Inner Zone is characterized by high-velocity anomalies, with the average velocity of 6.2-6.6 km/s, which is about 0.1– 0.2 km/s higher than the normal one. The velocity of the lower crust in the inner zone is 6.9-7.2 km/s, higher than those observed in the intermediate and outer zones(6.7-7.0 km/s). Relatively low velocity anomalies appear in the upper, middle and lower crusts near the junction of the inner zone and intermediate zone, probably due to the effect of the Xiaojiang fault(XJF).(3) The average velocity of the crust is comparatively low on both sides of XJF, especially on the east side, and the average velocity of the consolidated continental crust is also low there. This may suggest that the XJF extends at least down to 40 km deep, even beyond through the crust.(4) The depth to the Moho discontinuity decrease gradually from 47-53 km in the inner zone, via 42-50 km in the intermediate zone to 38-42 km in the outer zone. In the inner zone, the Moho uplifts locally and the(consolidated) crust is characterized by high-velocity anomalies, which are likely related to intensive magma intrusion and underplating associated with melting of plume head. Overall the crustal velocity structure in the study area recorded the imprint left by the Permian Emeishan mantle plume.XU Tao ZHANG ZhongJie LIU BaoFeng CHEN Yun ZHANG MingHui TIAN XiaoBo XU YiGang TENG JiWen 2015Science China Earth Sciences2015,58,7:36
8Holmium laser versus conventional transurethral resection of the bladder tumor显示文摘TENG Jing-fei WANG Kai YIN Lei QU Fa-jun ZHANG Dong-xu CUI Xin-gang XU Dan-feng 2013Chinese Medical Journal2013,,9:32
9Crustal structure of Gondwana-and Yangtze-typed blocks:An example by wide-angle seismic profile from Menglian to Malong in western Yunnan显示文摘The wide-angle seismic profile between Menglian and Malong crosses the Baoshan block (Gondwana-typed), and Simao and southwestern Yangtze blocks (Yangtze-typed). By in-terpreting the wide-angle seismic data, we obtained the seismic crust/upper mantle structure of P-wave velocities together with the seismic reflections of these three blocks, Changning- Menglian and Mojiang suture zones among the mentioned three blocks. Our interpreting results demonstrate that the P-wave crustal velocity of Simao block is slower than that of Baoshan and southwestern Yangtze block and the crustal thickness gradually thickens from the Baoshan block, Simao to southwestern Yangtze block. Crustal reflection patterns of these three blocks have dis-tinct differences too. For the Gondwana-typed blocks, seismic reflections in the upper crust are well developed while in middle-lower crust they are very weak. The crustal reflections in the Yangtze block are very well developed. The crustal reflection patterns in Simao and southwest-ern Yangtze blocks are distinguishable. The average thickness of the crust in the studied area is about 40 km. And we make some discussions on the crustal thickening model of the three blocks in western Yunnan and tectonic setting of seismic developing and interaction of Gondwana and Yangtze blocks.ZHANG Zhongjie1, BAI Zhiming1, WANG Chunyong2, TENG Jiwen1, Lü Qingtian3, LI Jiliang1, SUN Shanxue1 & WANG Xinzheng1 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 2. Institute of Geophysics, Chinese Seismological Bureau, Beijing 100081, China 3. Institute of Deposition Resource, Chinese Academy of Geological Sciences, Beijing 100037, China 2005Science China Earth Sciences2005,48,11:30
10Effects of stem structure andcell wall components on bending strength in wheat显示文摘Morphological traits, anatomical features, chemical components and bending stress in the stems of three genotypes of wheat (Triticum aestivum L.), namely Xiaoyan54, 8602 and Xiaoyan81, were ex- amined by means of light microscopy coupled with Fourier transform infrared spectroscopy (FTIR). No- ticeable changes in morphological and anatomical traits were observed, including outer radius of stem, the ratio of stem outer radius to stem wall thickness, various tissue proportions and variations among dif- ferent types of vascular bundles. The results of chemical analysis revealed that Xiaoyan81 had the highest cellulose content in comparison with Xiao- yan54 and 8602, whereas lignin level in Xiaoyan81 was lower than that in 8602 but higher that that in Xiaoyan54. Bending stress analysis demonstrated that Xiaoyan81 may be the main target for identifica- tion, for it had the highest bending stress among the stems of three genotypes. Associated with bending stress, all the results presented here suggested that the ratio of stem wall thickness to its outer radius, schlerenchyma tissue proportion, the average num- ber of big VB per unit and the cellulose content are four important factors affecting the mechanical strength of Xiaoyan81 wheat stems, which can be considered as the key parameters for selecting varie- ties with bending stress. Therefore, it was suggested that in the selection of lodging resistant cultivars one should consider those characterized with large ratio of outer radius of stem to stem wall thickness, great-erschlerenchyma tissue proportion, high average number of big VB per unit with high cellulose content in their stems.WANG Jian ZHU Jinmao LIN Qinqin LI Xiaojuan TENG Nianjun LI Zhensheng LI Bin ZHANG Aimin LIN Jinxing 2006Chinese Science Bulletin2006,51,7:30
11The Association of Maternal Body Composition and Dietary Intake with the Risk of Gestational Diabetes Mellitus during the Second Trimester in a Cohort of Chinese Pregnant Women显示文摘Objective To investigate the association of maternal body composition and dietary intake with the risk of gestational diabetes mellitus(GDM). Methods A total 154 GDM subjects and 981 controls were enrolled in a prospective cohort study in 11 hospitals from May 20, 2012 to December 31, 2013. Bioelectrical impedance analysis and dietary surveys were used to determine body composition and to evaluate the intake of nutrients in subjects at 21-24 weeks' gestation(WG). Logistic regression analysis was applied to explore the relationships of maternal body composition and dietary intake with the risk of GDM morbidity. Results Age, pre-pregnant body weight(BW), and body mass index(BMI) were associated with increased risk of GDM. Fat mass(FM), fat mass percentage(FMP), extracellular water(ECW), BMI, BW, energy, protein, fat, and carbohydrates at 21-24 WG were associated with an increased risk of GDM. In contrast, fat free mass(FFM), muscular mass(MM), and intracellular water(ICW) were associated with a decreased risk of GDM. Conclusion Maternal body composition and dietary intake during the second trimester of pregnancy were associated with the risk of GDM morbidity.Xu Qing Gao Zhi Ying Li Li Ming Wang Lu Zhang Qian Teng Yue Zhao Xia Ge Sheng Jing Hong Jiang Yang Yong Tao Liu Xiao Jun Lyu Chun Jian Mao Lun Yu Xiao Ming Liu Ying Hua Kong Ai Jing Yang Xue Yan Liu Zhao Zhang Yong Wang Jin Zhang Xin Sheng Xue Chang Yong Lu Yan Ping 2016Biomedical and Environmental Sciences2016,29,1:29
12Engineering a New Chloroplastic Photorespiratory Bypass to In crease Photosynthetic Efficiency and Productivity in Rice显示文摘Over the past few years, three photorespiratory bypasses have been introduced into plants, two of which led to observable in creases in photos yn thesis and biomass yield. However, most of the experiments were carried out using Arabidopsis under controlled environmental conditions, and the increases were only observed under low-light and short-day conditions. In this study, we designed a new photorespiratory bypass (called GOC bypass), characterized by no reducing equivalents being produced during a complete oxidation of glycolate into CO2 catalyzed by three rice-self-originating enzymes, i.e., glycolate oxidase, oxalate oxidase, and catalase. We successfully established this bypass in rice chloroplasts using a multi-gene assembly and transformation system. Transgenic rice plants carrying GOC bypass (GOC plants) showed significant increases in photosynthesis efficiency, biomass yield, and nitrogen content, as well as several other CO2-enriched phe no types under both greenhouse and field conditions .Grain yield of GOC plants varied depending on seeding season and was increased significantly in the spring. We further demonstrated that GOC plants had significant advantages under high-light conditions and that the improvements in GOC plants resulted primarily from a photosynthetic CO2-concentrating effect rather than from improved energy balance. Taken together, our results reveal that engineering a newly designed chloroplastic photorespiratory bypass could increase photosynthetic efficiency and yield of rice plants grown in field conditions, particularly under high light.Bo-Ran Shen Li-Min Wang Xiu-Ling Lin Zhen Yao Hua-Wei Xu Cheng-Hua Zhu Hai-Yan Teng Li-Li Cui E.-E. Liu Jian-Jun Zhang Zheng-Hui He Xin-Xiang Peng 2019Molecular Plant2019,12,2:30
13Biological effects of low-dose-rate irradiation of pancreatic carcinoma cells in vitro using ^(125)I seeds显示文摘AIM:To determine the mechanism of the radiationinduced biological effects of 125I seeds on pancreatic carcinoma cells in vitro.METHODS:SW1990 and PANC-1 pancreatic cancer cell lines were cultured in DMEM in a suitable environment.Gray’s model of iodine-125(125I)seed irradiation was used.In vitro,exponential phase SW1990,and PANC-1cells were exposed to 0,2,4,6,and 8 Gy using 125I radioactive seeds,with an initial dose rate of 12.13c Gy/h.A clonogenic survival experiment was performed to observe the ability of the cells to maintain their clonogenic capacity and to form colonies.Cell-cycle and apoptosis analyses were conducted to detect the apoptosis percentage in the SW1990 and PANC-1 cells.DNA synthesis was measured via a tritiated thymidine(3H-Td R)incorporation experiment.After continuous low-dose-rate irradiation with 125I radioactive seeds,the survival fractions at 2 Gy(SF2),percentage apoptosis,and cell cycle phases of the SW1990 and PANC-1 pancreatic cancer cell lines were calculated and compared.RESULTS:The survival fractions of the PANC-1 andSW1990 cells irradiated with 125I seeds decreased exponentially as the dose increased.No significant difference in SF2 was observed between SW1990 and PANC-1 cells(0.766±0.063 vs 0.729±0.045,P<0.05).The 125I seeds induced a higher percentage of apoptosis than that observed in the control in both the SW1990and PANC-1 cells.The rate of apoptosis increased with increasing radiation dosage.The percentage of apoptosis was slightly higher in the SW1990 cells than in the PANC-1 cells.Dose-dependent G2/M cellcycle arrest was observed after 125I seed irradiation,with a peak value at 6 Gy.As the dose increased,the percentage of G2/M cell cycle arrest increased in both cell lines,whereas the rate of DNA incorporation decreased.In the 3H-Td R incorporation experiment,the dosimetry results of both the SW1990 and PANC-1cells decreased as the radiation dose increased,with a minimum at 6 Gy.There were no significant differences in the dosimetry results of the two cell lines when they were exposed to the same dose of radiation.CONCLUSION:The pancreatic cancer cell-killing effects induced by 125I radioactive seeds mainly occurred via apoptosis and G2/M cell cycle arrest.Zhong-Min Wang Jian Lu Li-Yun Zhang Xiao-Zhu Lin Ke-Min Chen Zhi-Jin Chen Fen-Ju Liu Fu-Hua Yan Gao-Jun Teng Ai-Wu Mao 2015World Journal of Gastroenterology2015,21,8:27
14Key technologies and the implementation of wind,PV and storage co-generation monitoring system显示文摘The coordinated control of multiple-sources including wind,photovoltaic(PV)and storage brings new challenges to traditional dispatch and control technologies.This paper firstly introduces a framework of wind,PV and storage co-generation monitoring system.Then,key technologies of co-generation monitoring system including day-ahead optimal dispatching,active power coordinated control and reactive power and voltage control are proposed.The framework and the techniques described in this paper have been applied in the National Wind,Photovoltaic,Storage and Transmission Demonstration Project of China,and their validity have been tested and verified.Xianliang TENG Zonghe GAO Yingyuan ZHANG Hua HUANG Lili LI Tingting LIANG 2014Journal of Modern Power Systems and Clean Energy2014,2,2:25
15Clinical and experimental study on regional administration of phosphorus32 glassmicrospheres in treating hepatic carcinoma显示文摘AIM To study the therapeutical effectiveness, dosage range and toxic adverse effects of domestic phosphorus 32 glass microsphere and evaluate its clinical significance. METHODS Ⅰ. Fifty two BALB/*!c tumor bearing male nude mice were allocated into treatment group( n =38) and control group( n =14). In the former group different doses of 32 P GMS were injected into the tumor mass, while in the latter 31 P GMS or no treatment was given. The experimental animals were sacrificed in batches, and then the tumors and their nearby tissues were examined by light and electron microscopy. Ⅱ. Through selective catheterization of hepatic artery, 32 P GMS was infused to 5 healthy domestic pigs in a dosage equivalent to the therapeutic dose for human being, and 31 P GMS was infused to another 5 healthy domestic pigs. Two pigs infused with contrast medium served as whole course blank controls. One pig from each group was surrendered to euthanasia at week 1, 4, 8 and 16 respectively. The ultrastructural histopath ological changes in liver tissues taken from different sites were evaluated semiquan titatively. Ⅲ. One hundred and twenty seven times of 32 P GMS intrahepatic artery interventional therapies were performed on 93 patients with hepatic carcinoma, including 79 cases of primary hepatic carcinoma and 14 cases of secondary hepatic carcinoma. 32 P GMS ( n =30), and group B, 32 P GMS and half dose of trans hepatic artery embolization (TAE) ( n =49) , and 18 patients with HCC by TAE only as control group C. Fourteen patients with secondary hepatic carcinoma were treated in the same way as group B or C. RESULTS Ⅰ. Comparing with the control group, the treatment group of tumor bearing nude mice attained the tumor inhibition rates of 59 7%-93 7% ( F =579 62, P <0 01) at 14*!d . At an absorbed dose of 7320Gy, the tumor cells were completely destroyed. When the absorbed doses ranged from 1830Gy to 3660Gy, most of the tumor cells showed the evidences of injury or necrosis, but there appeared some well differentiated tumor cells and enhanced effect of the autoimmunocytes. At an absorbed dose of 366Gy or less, some tumor cells still remained active proliferative ability. The definite anticancer effect appeared as early as 3d after intratumoral injection of 32 P GMS. Ⅱ. The cumulative amount of 32 P GMS in the target tissue after trans hepatic artery instillation attained more than 90% of the total dose administrated. Semiquantitative analysis of ultrastructral morphology in the experimental group showed no statistical difference between the nuclear abnormality (N abn ) and mitochondrial variability (M var ) at week 1 or 2, but revealed prominent difference (χ 2=6 70-9 68, P <0 01 , χ 2=65 09-115 09, P <0 001 ) as compared with those in the other groups. In the experimental group the N abn in tissues showed no significant difference between week 8 and week 16. No apparent changes were found in the stomach, spleen, kidney and lung tissues of the experimental pigs. Ⅲ. The therapeutical results of HCC patients in group A were closely approximated to those of group C, no hematological toxic side effects were noted, and the systemic reaction was mild. In some patients 2*!mos - 3*!mos after treatment some secondary foci appeared around the periphery of the primary lesion. In general better effectiveness was obtained in patients with small lesion. After analyzing by RIDIT method, the therapeutic result in group B was significantly better than that in group C, and secondary foci around the original lesion were rarely seen at 3*!mos after treatment. In group C the collateral circulation was reestablished along the periphery of primary foci and the secondary foci appeared more frequently, and required to undergo several courses of treatment. In group B, 4 cases of HCC were treated surgically as their mass decreased in size after 32 P GMS treatment.LIU Lu, JIANG Zao, TENG Gao Jun, SONG Ji Zhi, ZHANG Dong Sheng, GUO Qing Ming, FANG Wen, HE Shi Cheng and GUO Jin He 1999World Journal of Gastroenterology1999,5,6:21
16The New Form of Time-Dependent Mild Slope Equation for Random Waves显示文摘The mild-slope equation derived by Berkhoff (1972), has widely been used in the numerical calculation of refraction and diffraction of regular waves. However, it is well known that the random sea waves has a significant effect in the refraction and diffraction problems. In this paper, a new form of time-dependent mild slope equation for irregular waves was derived with Fade approximation and Kubo’s time series concept. The equation was simplified using WKB method, and simple and practical irregular mild slope equation was obtained. Results of numerical calculations are compared with those of laboratory experiments.Zhang Yonggang , Li Yucheng Teng Bin Doctor Degree Candidate, The National Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023Professor, The National,Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023Associate Professor, The National Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023 1995China Ocean Engineering1995,10,4:21
17Effects of aminoguanidine on nitric oxide production induced by inflammatory cytokines and endotoxin in cultured rat hepatocytes显示文摘AIM To study the effects of aminoguanidine(AG) and two L-arginine analogues Nω-nitro-L-arginine methyl ester (L-NAME) and Nω-nitro-L-arginine (L-NNA) on nitric oxide (NO) productioninduced by cytokines (TNF-α, IL-11β, and IFN-γ)and bacterial lipopolysaccharide (LPS) mixture(CM) in the cultured rat hepatocytes, andexamine their mechanisms action.METHODS Rat hepatocytes were incubatedwith AG, L-NAME, L-NNA, Actinomycin D (ActD)and dexamethasene in a medium containing CM(LPS plus TNF-α, IL-1β, and IFN-γ) for 24 h. NOproduction in the cultured supernatant wasmeasured with the Griese reaction. IntracellularcGMP level was detected with radioimmunoasey.RESULTS NO production was markedlyblocked by AG and L-NAME in a dose-dependentmanner under inflammatory stimuli conditiontriggered by CM in vitro. The rate of themaximum inhibitory effects of L-NAME (38.9%)was less potent than that obtained with AG(53.7%, P<0.05). There was no significantdifference between the inhibitory effects of AGand two L-arginine analogues on intracellularcGMP accumulation in rat cultured hepatocytes.Non-specific NOS expression inhibitordexamethasone ( DEX ) and iNOS mRNAtranscriptional inhibitor ActD also significantlyinhibited CM-induced NO production. AG(0.1mmol.L-1) and ActD (0.2ng@Lt) wereequipotent in decreasing NO production inducedby inflammatory stimuli in vitro, and botheffects were more potent than that induced bynon-selectivity NOS activity inhibitor L-NAME(0. 1 mmol@ L- 1) under similar stimuli conditions(PGuo Liang Zhang Ye Hong Wang Hui Ling Teng Zhi Bin Lin Department of Pharmacology,School of Basic Medical Sciences,Beijing University,Beijiog 100083,ChinaDr.Guo Liang Zhang graduated from Xinxiang Medical College in 1982,got Ph.D.at Nagoya City University Medical School,Japan in 1994,finished postdoctoral research at Beijing Medical Univcrsity in 1996,now an associate professor of pharmacology,specialized in hepatic pharmacology,having 15 papers published. 2001World Journal of Gastroenterology2001,7,3:20
18Gastric Lgr5+ stem cells are the cellular origin of invasive intestinal-type gastric cancer in mice显示文摘Xiu-Bin Li Guan Yang Liang Zhu Yu-Ling Tang Chong Zhang Zhenyu Ju Xiao Yang Yan Teng 2016Cell Research2016,26,7:20
19Transplantation of magnetically labeled mesenchymal stem cells improves cardiac function in a swine myocardial infarction model显示文摘背景:间充质的干细胞(MSC ) 移植为心肌的修理提供一条新途径。然而,关于 MSC 移植的许多重要基本问题仍然保持未答复。有迫切需要从跳动的心识别 MSC 并且分析这条新途径的功效。试图本地化有磁力地标记的 MSC (MR-MSCs ) 并且监视补药的这研究与磁性的回声(先生) MR-MSCs 完成成像。方法:尖锐心肌的梗塞(AMI ) 被左前面的下降冠的动脉的汽球吸藏在猪创造。房间在心肌的梗塞以后经由 intracoronary 注入被交付。梗塞尺寸变化和心脏的功能与 3.0T 先生扫描仪被估计。结果然后被组织学、西方的污点分析证实。所有统计过程与 Systat (社会科学统计套装软体版本 12.01 ) 被执行。结果:26 猪的一个总数被划分成四个组(假冒操作组, n=6;有 PBS 移植的 AMI 组, n=6;标记的 MSC 组, n=7;未标记的 MSC 组, n=7 ) 。MSC, MR-MSCs (10 (7 ) 房间) 或在 MI 和连续心脏的先生成像研究在移植以后在 0, 4 和 8 个星期被执行以后, PBS 被 intracoronary 注射交付。先生成像证明 MI 尺寸在 MSC 移植以后减少了在标记并且未标记的组然而,增加在 MI 以后在 8 个星期在 AMI 组被看见。左室的喷射部分( LVEF )稍微在 AMI 组被增加(( 41.87+/-2.45 )%对( 39.04+/-2.80 )%, P>0.05 ),但是显著地在 MR-MSCs 组改善了(( 56.85+/-1.29 )%对( 40.67+/-2.00 )%, P<0.05 )并且未标记的组(( 55.38+/-1.07 )%对( 41.78+/-2.08 )%, P<0.05 )在 8 星期术后疗法。MR-MSCs 被普鲁士的蓝色和免疫进一步证实荧光灯的染色。西方的污点分析证明在 MSC 处理组和矩阵 metalloproteinase 的比率有象肌浆球蛋白重链和 troponin T 那样的 cardiomyocyte 标记的增加的表情 2 到 metalloproteinase 的织物禁止者, 1 与 AMI 组和假冒操作组相比在标记的组和未标记的组减少了。结论:移植 MR-MSCs 能改革新心肌层并且在 2 月的后续在一个 MI 模型阻止 remolding 并且代表一个比较喜欢的方法更好在未来理解干细胞治疗的机制临床的研究。QI Chun-mei MA Gen-shan LIU Nai-feng SHEN Cheng-xing CHEN Zhong LIU Xiao-jun HU Yao-peng ZHANG Xiao-li TENG Gao-jun JU Sheng-hong MA Ming TANG Yao-liang 2008Chinese Medical Journal2008,,6:19
20The rice OsV4 encoding a novel pentatricopeptide repeat protein is required for chloroplast development during the early leaf stage under cold stress显示文摘Pentatricopeptide repeat(PPR)proteins,characterized by tandem arrays of a 35 amino acid motif,have been suggested to play central and broad roles in modulating the expression of organelle genes in plants.However,the molecular mechanisms of most rice PPR genes remains unclear.In this paper,we isolated and characterized a temperature-conditional virescent mutant,OsV4,in rice(Oryza sativa cultivar Jiahua1(WT,japonica rice variety)).The mutant displays albino phenotype and abnormal chloroplasts at the three leaf stage,which gradually turns green after the four leaf stage at a low temperature(20°C).But the mutant always develops green leaves and well-developed chloroplasts at a high temperature(32°C).Genetic and molecular analyses uncovered that OsV4 encodes a novel chloroplast-targeted PPR protein including four PPR motifs.Further investigations show that the mutant phenotype is associated with changes in chlorophyll content and chloroplast development.The OsV4transcripts only accumulate to high levels in young leaves,indicating that its expression is tissue-specific.In addition,transcript levels of some ribosomal components and plastid-encoded polymerase-dependent genes are dramatically reduced in the albino mutants grown at 20°C.These findings suggest that OsV4 plays an important role during early chloroplast development under cold stress in rice.Xiaodi Gong Qianqian Su Dongzhi Lin Quan Jiang Jianlong Xu Jianhui Zhang Sheng Teng Yanjun Dong 2014Journal of Integrative Plant Biology2014,56,4:19
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