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1Precise orbit determination for geostationary satellites with multiple tracking techniques显示文摘A new precise orbit determination (POD) strategy based on the combination of satellite laser ranging (SLR) and C-band transfer ranging for geostationary satellites (GEO) is presented.Two approaches to calibrate ranging biases of the C-band ranging system are proposed,namely the two tracking system co-location comparison and the combined POD method,with calibration accuracies estimated to be 0.5 ns and 1 ns respectively.Using data from a C-band tracking network in China,POD experiments indicate that meter-level POD accuracy is achievable for GEO.Root-mean-square (RMS) of the post-fit C-band ranging data is about 0.205 m.The radial component errors of POD are evaluated with SLR data from a station in Beijing,with residual RMS of 0.133 m.Orbital overlapping experiments show the total orbit error is a few meters.Computations of SLR residuals also suggest that for 2-hour prediction,the predicted radial error is about 0.373 m.GUO Rui HU XiaoGong TANG Bo HUANG Yong LIU Li CHENG LiuCheng HE Feng 2010Chinese Science Bulletin2010,55,8:24
2Identification of the anti-tumor activity and mechanisms of nuciferine through a network pharmacology approach显示文摘瞄准:Nuciferine 是从莲花叶子提取的 aporphine 碱,它是在为重量损失的中国药用的植物的原料。在这研究,我们使用了一条网络药理学途径识别 nuciferine 和内在的 mechanisms.Methods 的反肿瘤活动:nuciferine 的药理学活动和机制通过目标侧面预言被识别,聚类用我们的繁体中文药(TCM ) 的分析和功能的丰富分析网络药理学站台。nuciferine 的反肿瘤活动被验证由在 vitro 并且在 vivo 实验。nuciferine 的反肿瘤机制通过网络目标分析被预言并且验证了由在 vitro experiments.Results:nuciferine 目标侧面与表明小径和生物功能被充实,包括 “脂肪分解酵素 activity” 的规定;, “对 nicotine” 的反应;并且 “房间 proliferation” 的规定;。目标侧面聚类结果建议了那 nuciferine 施加反肿瘤效果。在试验性的确认, nuciferine (0.8 mg/mL ) 显著地在 vitro 禁止了人的 neuroblastoma SY5Y 房间和老鼠 colorectal 癌症 CT26 房间的生存能力,并且 nuciferine (0.05 mg/mL ) 显著地在 vitro 压制了 6 根癌症房间线的侵略。nuciferine 的 Intraperitoneal 注射(9.5 mg/mL, ip,乘为 3 个星期的一个星期的 3 ) 显著地减少了在裸体老鼠的 SY5Y 和 CT26 肿瘤异种皮移植的重量。在 SY5Y 和 CT26 房间的网络目标分析和试验性的确认证明 nuciferine 的反肿瘤效果通过禁止在 SY5Y 和 CT26 cells.Conclusion 表明小径和 IL-1 层次的 PI3K-AKT 被调停:由使用一个 TCM 网络药理学方法, nuciferine 在 vitro 并且在 vivo 对人的 neuroblastoma 和老鼠 colorectal 癌症作为一个反肿瘤代理人被识别,通过禁止表明小径和 IL-1 层次的 PI3K-AKT。Quan QI Rui LI Hui-ying LI Yu-bing CAO Ming BAI Xiao-jing FAN Shu-yan WANG Bo ZHANG Shao LI 2016Acta Pharmacologica Sinica2016,37,7:23
3Gut microbiome,liver immunology,and liver diseases显示文摘The gut microbiota is a complex and plastic consortium of microorganisms that are intricately connected with human physiology.The liver is a central immunological organ that is particularly enriched in innate immune cells and constantly exposed to circulating nutrients and endotoxins derived from the gut microbiota.The delicate interaction between the gut and liver prevents accidental immune activation against otherwise harmless antigens.Work on the interplay between the gut microbiota and liver has assisted in understanding the pathophysiology of various liver diseases.Of immense importance is the step from high-throughput sequencing(correlation)to mechanistic studies(causality)and therapeutic intervention.Here,we review the gut microbiota,liver immunology,and the interaction between the gut and liver.In addition,the impairment in the gut-liver axis found in various liver diseases is reviewed here,with an emphasis on alcohol-associated liver disease(ALD),nonalcoholic fatty liver disease(NAFLD),and autoimmune liver disease(AILD).On the basis of growing evidence from these preclinical studies,we propose that the gut-liver axis paves the way for targeted therapeutic modalities for liver diseases.Rui Wang Ruqi Tang Bo Li Xiong Ma Bernd Schnabl Herbert Tilg 2021Cellular & Molecular Immunology2021,18,1:23
4Tumor suppressor miR-128-3p inhibits metastasis and epithelial-mesenchymal transition by targeting ZEB1 in esophageal squamous-cell cancer显示文摘MicroRNAs (miRNAs ) 是在 post-transcriptional 层次调整多重生物功能的一些短 RNA,例如 tumorigenic 过程,煽动性的损害和房间 apoptosis。(ZEB1 ) 锌手指电子盒子有约束力的 homeobox 因素 1 是上皮间充质的转变(EMT ) 的一个关键调停人。它包括人的食道的有鳞房间的癌(ESCC ) 导致各种各样的癌症的恶意的前进。在这研究,我们发现 miR-128-3p 由使用 PCR 是在 ESCC 纸巾和房间的 downregulated。而且, miR-128-3p 的下面调整的表示被证明与 ESCC 病人的差的预后被联系并且可能被认为是一个独立预示的因素。然后,我们在 ESCC 房间检验了 miR-128-3p 的角色,并且发现 miR-128-3p 能在 vitro 压制房间迁居和侵略。而且, ZEB1 被证实是由酶记者试金的 miR-128-3p 的一个直接目标。营救实验证明 EMT 被 miR-128-3p 经由 ZEB1 的抑制调整。一起拿所有,我们断定 miR-128-3p 压制 EMT,经由 ZEB1 的转移,和 miR-128-3p 可以是在 ESCC 的一个批评调停人。Lili Zhao Rui Li Shanling Xu Yi Li Pei Zhao Wei Dong Zhenjun Liu Qian Zhao Bo Tan 2018Acta Biochimica et Biophysica Sinica2018,50,2:21
5Serum sclerostin levels associated with lumbar spine bone mineral density and bone turnover markers in patients with postmenopausal osteoporosis显示文摘XU Xiao-juan SHEN Lin YANG Yan-ping LU Fu-rong ZHU Rui SHUAI Bo LI Cheng-gang WU Man-xiang 2013Chinese Medical Journal2013,,13:20
6Anatomy of composition and nature of plate convergence: Insights for alternative thoughts for terminal India-Eurasia collision显示文摘The pattern and timing of collision between India and Eurasia have long been a major concern of the international community. However, no consensus has been reached hitherto. To explore and resolve the disagreements in the Himalayan study,in this paper we begin with the methodology and basic principles for the anatomy of composition and nature of convergent margins,then followed by an effort to conduct a similar anatomy for the India-Eurasia collision. One of the most common patterns of plate convergence involves a passive continental margin, an active continental margin and intra-oceanic basins together with accreted terranes in between. The ultimate configuration and location of the terminal suture zone are controlled by the basal surface of the accretionary wedge, which may show fairly complex morphology with Z-shape and fluctuant geometry. One plausible method to determine the terminal suture zone is to dissect the compositions and structures of active continental margins. It requires a focus on various tectonic elements belonging to the upper plate, such as accretionary wedges, high-pressure(HP)-ultra-high-pressure(UHP) metamorphic rocks, Barrovian-type metamorphic rocks and basement nappes, together with superimposed forearc basins.Such geological records can define the extreme limits and the intervening surface separating active margin from the passive one,thus offering a general sketch for the surface trace of the terminal suture zone often with a cryptic feature. Furthermore, the occurrence of the cryptic suture zone in depth may be constrained by geophysical data, which, in combination with outcrop studies of HP-UHP metamorphic rocks, enables us to outline the terminal suture zone. The southern part of the Himalayan orogen records complicated temporal and spatial features, which are hard to be fully explained by the classic 'two-plate-one-ocean' template,therefore re-anatomy of the compositions and nature for this region is necessitated. Taking advantage of the methodology and basic principles of plate convergence anatomy and synthesizing previous studies together with our recent research, we may gain new insights into the evolution of the Himalayan orogeny.(1) The Yarlung-Zangbo ophiolite is composed of multiple tectonic units rather than a single terminal suture zone, and a group of different tectonic units were juxtaposed against each other in the backstop of the Gangdese forearc.(2) The Tethyan Himalayan Sequence(THS) contains mélanges with typical block-in-matrix structures, uniform southwards paleocurrents and age spectra of detrital zircons typical of Eurasia continent. All of these facts indicate that the THS belonged to Eurasia plate before the terminal collision, emplaced in the forearc of the Gangdese arc.(3) The Greater Himalayan Crystalline Complex(GHC) and Lesser Himalayan Sequence(LHS) comprise complex components including eclogites emplaced into the GHC and the upper part of the LHS. Judging from the fact that HP-UHP metamorphic rocks are exhumed and emplaced in the upper plate, the GHC and the upper part of the LHS where eclogite occur should be assigned to the upper plate, lying above the terminal subduction zone surface. It is the very surface along which the continuous subduction of the India subcontinent occurred, therefore acting as the terminal, cryptic suture. From the suture further southward, the bulk rock associations of the LHS and Sub-Himalayan Sequence(Siwalik) show little affinity of mélange, probably belonging to the foreland system of the India plate. By the anatomy of tectonic features of all the tectonic units in the Himalayan orogen as well as the ages of the subduction-accretion related deformation, we conclude that the terminal India-Eurasia collision occurred after 14 Ma, the timing of the metamorphism of the eclogites emplaced into the upper plate. The development of rifts stretching in N-S direction in Tibet and tectonic events with the transition from sinistral to dextral movements in shear zones, such as the Ailaoshan fault in East Tibet, can coordinately reflect the scale and geodynamic influence of the India-Eurasia convergence zone.By conducting a detailed anatomy of the southern Himalayas, we propose a new model for the final collision-accretion of the Himalayan orogeny. Our study indicates that the anatomy of structures, composition, and tectonic nature is the key to a better understanding of orogenic belts, which may apply to all the orogenic belts around the world. We also point out that several important issues regarding the detailed anatomy of the structures, compositions and tectonic nature of the Himalayan orogeny in future.XIAO WenJiao AO SongJian YANG Lei HAN ChunMing WAN Bo ZHANG Ji'En ZHANG ZhiYong LI Rui CHEN ZhenYu SONG ShuaiHua 2017Science China Earth Sciences2017,60,6:20
7Cloning, expression, and protective immunity in mice of a gene encoding the diagnostic antigen P-29 of Echinococcus granulosus显示文摘Taeniid 绦虫包虫 granulosus 是包虫病的原因的代理人,有世界范围的分发的重要动物病。在这研究,诊断抗原 P-29 从 E 被克隆。granulosus 并且在 Escherichia 表示了 coli。顺序分析证明 EgP-29 包含 717-bp 开的读框架并且与 27.1 kDa 的预言的分子的重量编码 238 氨基酸残余的蛋白质。recombinant EgP-29 (rEgP-29 ) 能在西方的弄污与反老鼠 sera 被认出。特定的抗体被连接酶的 immunosorbent 试金检测。老鼠与 rEgP-29 种牛痘并且与 E intraperitoneally 质问了。granulosus protoscoleces 揭示了 96.6% 的重要保护的免疫(P < 0.05 ) ,与控制组相比。因此, rEgP-29 蛋白质是一个有希望的候选人让一支有效疫苗阻止第二等的包虫病。Zhiyun Shi Yana Wang Zongji Li Zhaoyu Li Yang Bo Rui Ma Wei Zhao 2009Acta Biochimica et Biophysica Sinica2009,41,1:19
8The endoplasmic reticulum stress inhibitor salubrinal inhibits the activation of autophagy and neuroprotection induced by brain ischemic preconditioning显示文摘Bo GAO Xiang-yang ZHANG Rong HAN Tong-tong ZHANG Cheng CHEN Zheng-hong QIN Rui SHENG 2013Acta Pharmacologica Sinica2013,34,5:19
9Single-cell transcriptomic analysis defines the interplay between tumor cells,viral infection,and the microenvironment in nasopharyngeal carcinoma显示文摘Nasopharyngeal carcinoma(NPC)is an Epstein-Barr virus(EBV)-associated malignancy with a complex tumor ecosystem.How the interplay between tumor cells,EBV,and the microenvironment contributes to NPC progression and immune evasion remains unclear.Here we performed single-cell RNA sequencing on^104,000 cells from 19 EBV^+NPCs and 7 nonmalignant nasopharyngeal biopsies,simultaneously profiling the transcriptomes of malignant cells,EBV,stromal and immune cells.Overall,we identified global upregulation of interferon responses in the multicellular ecosystem of NPC.Notably,an epithelial–immune dual feature of malignant cells was discovered and associated with poor prognosis.Functional experiments revealed that tumor cells with this dual feature exhibited a higher capacity for tumorigenesis.Further characterization of the cellular components of the tumor microenvironment(TME)and their interactions with tumor cells revealed that the dual feature of tumor cells was positively correlated with the expression of co-inhibitory receptors on CD8^+tumor-infiltrating T cells.In addition,tumor cells with the dual feature were found to repress IFN-γproduction by T cells,demonstrating their capacity for immune suppression.Our results provide new insights into the multicellular ecosystem of NPC and offer important clinical implications.Shanzhao Jin Ruoyan Li Ming-Yuan Chen Chao Yu Lin-Quan Tang Yan-Min Liu Jiang-Ping Li Yi-Na Liu Yi-Ling Luo Yifan Zhao Yu Zhang Tian-Liang Xia Shang-Xin Liu Qi Liu Guan-Nan Wang Rui You Jing-Yun Peng Jiang Li Feng Han Jianwei Wang Qiu-Yan Chen Li Zhang Hai-Qiang Mai Benjamin E.Gewurz Bo Zhao Lawrence S.Young Qian Zhong Fan Bai Mu-Sheng Zeng 2020Cell Research2020,30,11:16
10Glycyrrhizic acid attenuates CCl_4-induced hepatocyte apoptosis in rats via a p53-mediated pathway显示文摘AIM: To investigate the effect of glycyrrhizic acid (GA) on carbon tetrachloride (CCl4)-induced hepatocyte apo-ptosis in rats via a p53-dependent mitochondrial path-way. METHODS: Forty-five male Sprague-Dawley rats were randomly and equally divided into three groups, the control group, the CCl4 group, and the GA treatment group. To induce liver fibrosis in this model, rats were given a subcutaneous injection of a 40% solution of CCl4 in olive oil at a dose of 0.3 mL/100 g body weight biweekly for 8 wk, while controls received the same isovolumetric dose of olive oil by hypodermic injection, with an initial double-dose injection. In the GA group,rats were also treated with a 40% solution of CCl4 plus 0.2% GA solution in double distilled water by the intraperitoneal injection of 3 mL per rat three times a week from the first week following previously published methods, with modifications. Controls were given the same isovolumetric dose of double distilled water. Liver function parameters, such as alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were de-termined. Pathologic changes in the liver were detected by hematoxylin and eosin staining. Collagen fibers were evaluated by Sirius red staining. Hepatocyte apoptosis was investigated using the terminal deoxynucleotidyl transferase-mediated deoxyuridine 5-triphosphate nick end labeling (TUNEL) assay and the cleaved caspase-3 immunohistochemistry assay. The expression levels of p53 and apoptosis-related proteins were evaluated by immunohistochemistry or Western blotting analysis. RESULTS: After 8 wk of treatment, GA significantly re-duced serum activity of ALT (from 526.7 ± 57.2 to 342 ± 44.8, P<0.05) and AST (from 640 ± 33.7 to 462.8 ± 30.6, P<0.05), attenuated the changes in liver his-topathology and reduced the staging score (from 3.53 ± 0.74 to 3.00 ± 0.76, P<0.05) in CCl4 -treated rats. GA markedly reduced the positive area of Sirius red and the ratio of the hepatic fibrotic region (from 7.87% ± 0.66% to 3.68% ± 0.32%, P<0.05) compared with the CCl4 group. GA also decreased the expression level of cleaved caspase-3 compared to the CCl4 group. TU-NEL assay indicated that GA significantly diminished the number of TUNEL-positive cells compared with the CCl4 group (P<0.05). GA treatment clearly decreased the level of p53 (P<0.05) detected by immunohis-tochemistry and Western blotting analysis. Compared with the CCl4 group, we also found that GA reduced the Bax/Bcl-2 ratio (P<0.05), the expression of cleaved caspase-3 (P<0.05), cleaved caspase-9 (P<0.05), and inhibited cytochrome C and second mitochondria-derived activator of caspases (Smac) release from mito-chondria to cytoplasm, i.e. , GA reduced the expressionlevel of Smac, which inhibited c-IAP1 activity (P<0.05), ultimately inhibiting the activity of caspase-3, according to Western blotting analysis. As a result, GA suppressed activation of the caspase cascades and prevented he-patocyte apoptosis.Xiao-Ling Guo Bo Liang Xue-Wei Wang Fu-Gang Fan Jing Jin Rui Lan Jing-Hui Yang Xiao-Chun Wang Lei Jin Qin Cao 2013World Journal of Gastroenterology2013,19,24:12
11Preoperative growth inhibition of human gastric adenocarcinoma treated with a combination of celecoxib and octreotide显示文摘瞄准:为了在人的胃的癌症的生长的抑制获得卓见进组织病理学说的回答和分子的目标,与 celecoxib 对待(cyclooxygenase [艇长]-2 禁止者) 与 octreotide 结合了。方法:有经历药品胃切除术或扩大切除术的胃的癌症的 75 个病人随机被划分成 3 个组。肿瘤房间的 apoptosis 被终端 deoxynucleotide 测量标记的调停 transferase 的 dUTP 刻痕结束(TUNEL ) 试金。胃的癌症微容器密度(MVD ) 和 COX-2 的表示被免疫评估组织化学的染色。somatostatin 的表达式受体(SSTR )-2 与简历被检测分子的相互作用分析系统。non-steroidal 的抄写反煽动性的药激活基因(唠叨)-1 被 RT-PCR 测量。结果:与控制和 celecoxib 组相比,在联合组的更多的坏死被观察。在联合组(7.06%+/-0.67%) 的 apoptotic 率在控制组比那显著地高(6.23%+/-1.29% , P<0.05 ) 。MVD 在联合组更加减少了。起来 NAG-1 的规定在 celecoxib 和联合组两个都被显示。在与 celecoxib (48%) 治疗的胃的癌症的 SSTR-2 的积极的率在外科(P<0.05 ) 以后比控制组(12%) 的显著地高。结论:显著地与 octreotide 相结合的 Celecoxib 通过 apoptosis 的正式就职和 MVD 的减小在胃的腺癌支持了坏死。NAG-1 和 SSTR-2 可能是为 celecoxib 或 octreotide 的分子的目标。Mao-tao HUANG Zhi-xin CHEN Bing WEI Bo ZHANG Chun-hui WANG Ming-hui HUANG Rui LIU Cheng-weiTANG 2007Acta Pharmacologica Sinica2007,28,11:12
12Commissioning progress of the FAST显示文摘The Five-hundred-meter Aperture Spherical radio Telescope(FAST) was completed with its main structure installed on September 25, 2016, after which it entered the commissioning phase. This paper aims to introduce the commissioning progress of the FAST over the past two years. To improve its operational reliability and ensure effective observation time, FAST has been equipped with a real-time information system for the active reflector system and hierarchical commissioning scheme for the feed support system, which ultimately achieves safe operation of the two systems. For meeting the high-performance indices, a highprecision measurement system was set up based on the effective control methods that were implemented for the active reflector system and feed support system. Since the commissioning of the FAST, a low-frequency ultra-wideband receiver and 19-beam1.05-1.45 GHz receiver have been mainly used. Telescope efficiency, pointing accuracy, and system noise temperature were completely tested and ultimately achieved the acceptance indices of the telescope. The FAST has been in the process of national acceptance preparations and has begun to search for pulsars. In the future, it will still strive to improve its capabilities and expand its application prospects.Peng Jiang YouLing Yue HengQian Gan Rui Yao Hui Li GaoFeng Pan JingHai Sun DongJun Yu HongFei Liu NingYu Tang Lei Qian JiGuang Lu Jun Yan Bo Peng ShuXin Zhang QiMing Wang Qi Li Di Li 2019Science China(Physics,Mechanics & Astronomy)2019,62,5:11
13One-stop strategy for treatment of atrial fibrillation:feasibility and safety of combining catheter ablation and left atrial appendage closure in a single procedure显示文摘Background:Catheter ablation is effective in restoring sinus rhythm and left atrial appendage closure(LAAC)is increasingly used for stroke prevention in patients with atrial fibrillation(AF).We aimed to observe the feasibility and safety of performing AF ablation and LAAC in a single(one-stop)procedure.Methods:Consecutive AF patients who underwent the combined procedure of AF ablation and LAAC with WATCHMAN device between March 2017 and September 2018 were prospectively enrolled.Baseline and intra-procedural parameters were evaluated.Three-month and subsequent 1-year follow-up were performed in all and earlier-enrolled subjects,respectively.Results:A total of 178 AF patients(94 males,68.9±8.1 years)underwent the one-stop procedure with CHA2DS2-VASc score 3.3±1.5 and HAS-BLED score 1.6±1.0,respectively.Pulmonary vein isolation was achieved in all patients while additional linear ablation was applied if the operator deemed necessary,yielding immediate ablation success rate of 98.9%(176/178).In the subsequent LAAC,satisfactory seal(residual leak<5 mm)was achieved in all patients.One stroke and four cardiac perforations occurred peri-operatively.At 3-month follow-up,sinus rhythm and satisfactory seal were maintained in 153/178(86.0%)and 178/178(100%)patients,respectively.One stroke and one delayed cardiac tamponade occurred,while no device-related thrombus or device migration was observed.During the 1-year follow-up for the earlier enrolled subjects,52/72(72.2%)of the patients maintained sinus rhythm.There was no stroke or systemic embolism observed.Conclusion:Combining catheter ablation and LAAC in a single procedure can be successfully and safely performed in non-valvular AF patients of Chinese population.Mu Chen Zhi-Quan Wang Qun-Shan Wang Jian Sun Peng-Pai Zhang Xiang-Fei Feng Wei Li Ying Yu Bo Liu Bin-Feng Mo Rui Zhang Mei Yang Chang-Qi Gong Ming-Zhe Zhao Yi-Chi Yu Yan Zhao Qiu-Fen Lu Yi-Gang Li 2020Chinese Medical Journal2020,,12:11
14Global Dynamic Molecular Profiling of Stomatal Lineage Cell Development by Single-Cell RNA Sequencing显示文摘The regulation of stomatal lineage cell development has been extensively investigated.However,a comprehensive characterization of this biological process based on single-cell transcriptome analysis has not yet been reported.In this study,we performed RNA sequencing on 12844 individual cells from the cotyledons of 5-day-old Arabidopsis seedlings.We identified 11 cell clusters corresponding mostly to cells at specific stomatal developmental stages using a series of marker genes.Comparative analysis of genes with the highest variable expression among these cell clusters revealed transcriptional networks that regulate development from meristemoid mother cells to guard mother cells.Examination of the developmental dynamics of marker genes via pseudo-time analysis revealed potential interactions between these genes.Collectively,our study opens the door for understanding how the identified novel marker genes participate in the regulation of stomatal lineage cell development.Zhixin Liu Yaping Zhou Jinggong Guo Jiaoai Li Zixia Tian Zhinan Zhu Jiajing Wang Rui Wu Bo Zhang Yongjian Hu Yijing Sun Yan Shangguan Weiqiang Li Tao Li Yunhe Hu Chenxi Guo Jean-David Rochaix Yuchen Miao Xuwu Sun 2020Molecular Plant2020,13,8:11
15Synergistic effects of prostaglandin E1 and lithium in a rat model of cerebral ischemia显示文摘瞄准:热吃惊蛋白质(HSP ) 是细胞的幸存的重要管理者并且对服的局部缺血施加 neuroprotective 效果。前列腺素 El (PGE1 ) 和锂被报导了保护神经原免于是化学家损害。如果锂能加强,现在的学习被承担检验对服的局部缺血的 PGE1 的 neuroprotection,并且如果合作效果发生在 HSP 的水平。方法:大脑局部缺血被永久中间的服的动脉吸藏(pMCAO ) 在老鼠导致。老鼠立即是有为 2 d 和 PGE1 的一个单个静脉内的政府的锂的下的注射的 pretreated 在以后化学家侮辱。每个组的 Cerebrocortical 血流动仔细在外科的操作以后在局部缺血, 5 min, 15 min, 30 min 和 60 min 的发作以前被监视。身体温度以前被测量,在 pMCAO 的发作以后的 5 min, 2 h 和 24 h。梗塞体积,大脑浮肿和马达行为赤字被分析 24 h 在以后化学家侮辱。Cytoprotective HSP70 并且他我在 ipsilateral 半球的条纹弦音器的 oxygenase-1 (HO-1 ) 被弄污的免疫检测。从 ipsilateral 半球的条纹弦音器的大脑节是有 anti-HSP70 抗体和 4,6-diamidino-2-phenylindole (DAPI ) 的双 labeled。结果:有 PGE1 的处理(8 和 16 μg/kg, iv ) 或锂(0.5 mEq/kg, sc ) 独自减少的梗塞体积,神经病学的赤字和大脑浮肿在老鼠由焦点的服的局部缺血导致了。而且,当 PGE1 和锂一起被给时,更大的 neuroprotection 被观察。显著地,在调整 cytoprotective 上面, HSP70 和 HO-1 蛋白质铺平的 PGE1 和锂的合作管理。结论:锂和 PGE1 可以在服的局部缺血的处理施加 synergistic 效果并且可以因此为击的处理有潜在的临床的价值。Rong HAN Bo GAO Rui SHENG Li-sha ZHANG Hui-lin ZHANG Zhen-lun GU Zheng-hong QIN 2008Acta Pharmacologica Sinica2008,29,10:10
16Formative mechanism of intracanal fracture fragments in thoracolumbar burst fractures: a finite element study显示文摘ZENG Zhi-li ZHU Rui LI Shan-zhu YU Yan WANG Jian-jie JIA Yong-wei CHEN Bo CHENG Li-ming 2013Chinese Medical Journal2013,,15:9
17Tetrahydrobiopterin Protects against Radiation-induced Growth Inhibition in H9c2 Cardiomyocytes显示文摘Zheng-Yi Zhang Yi Li Rui Li An-An Zhang Bo Shang Jing Yu Xiao-Dong Xie 2016Chinese Medical Journal2016,,22:9
18Control Method for Steel Strip Roughness in Two-stand Temper Mill Rolling显示文摘How to control surface roughness of steel strip in a narrow range for a long time has become an important question because surface roughness would significantly influence the appearance of the products. However, there are few effective solutions to solve the problem currently. In this paper, considering both asperities of work roll pressing in and squeezing the steel strip, two asperity contact models including squeezing model and pressing in model in a two-stand temper mill rolling are established by using finite element method(FEM). The simulation investigates the influences of multiple process parameters, such as work roll surface roughness, roll radius and roll force on the surface roughness of steel strip. The simulation results indicate that work rolls surface roughness and roll force play important roles in the products; furthermore, the effect of roll force in the first stand is opposite to the second. According to the analysis, a control method for steel strip surface roughness in a narrow range for a long time is proposed, which applies higher work roll roughness in the first stand and lower roll roughness in the second to make the steel strip roughness in a required narrow range. In the later stage of the production, decreasing the roll force in the first stand and increasing the roll force in the second stand guarantee the steel strip roughness relatively stable in a long time. The following experimental measurements on the surface topography and roughness of the steel strips during the whole process are also conducted. The results validate the simulation conclusions and prove the effect of the control method. The application of the proposed method in the steel strip production shows excellent performance including long service life of work roll and high finished product rate.LI Rui ZHANG Qingdong ZHANG Xiaofeng YU Meng WANG Bo 2015Chinese Journal of Mechanical Engineering2015,28,3:8
19Antioxidant Effect of Human Selenium-containing Single-chain Fv in Rat Cardiac Myocytes显示文摘Reactive oxygen species(ROS) plays a key role in human heart diseases. Glutathione peroxidase(GPX) functions as an antioxidant as it catalyzes the reduction of hydroperoxide. In order to investigate the antioxidant effect of human selenium-containing single-chain Fv(Se-scFv-B3), a new mimic of GPX, a model system of hydrogen peroxide(H2O2)-induced rat cardiac myocyte damage was established. The cardiac myocyte damage was characterized in terms of cell viability, lipid peroxidation, cell membrane integrity, and intracellular H2O2 level. The Se-scFv-B3 significantly reduced H2O2-induced cell damage as shown by the increase of cell viability, the decline of malondialdehyde(MDA) production, lactate dehydrogenase(LDH) release, and intracellular H2O2 level. So Se-scFv-B3 may have a great potential in the treatment of human heart diseases induced by ROS.HUO Rui SHI Yi XU Jun-jie YAN Fei LV Shao-wu SU Jia-ming DUAN Yu-jing FAN Jia NING Bo CONG Deng-li YAN Gang-lin LUO Gui-min WEI Jing-yan 2009Chemical Research in Chinese Universities2009,25,2:8
20Screening and evaluation of human single-chain fragment variable antibody against hepatitis B virus surface antigen显示文摘BACKGROUND: Phage display technology has become a vital tool in studies aimed at identifying molecules binding to a specific target. It enables the rapid generation and selection of high affinity, fully human antibody product candidates to essentially any disease target appropriate for antibody therapy. In this study, we prepared the recombinant single-chain fragment variable ( ScFv) antibody to hepatitis B virus surface antigen (HBsAg) by the phage display technology for obtaining a virus-targeting mediator. METHODS: mRNA was isolated from B-lymphocytes from a healthy volunteer and converted into cDNA. The fragment variables of heavy and light chain were amplified separately and assembled into ScFv DNA with a specially constructed DNA linker by polymerase chain reaction. The ScFv DNA was ligated into the phagmid vector pCANT-AB5E and the ligated sample was transformed into competent E. coli TG1. The transformed cells were infected with M13K07 helper phage to form a human recombinant phage antibody library. The volume and recombinant rate of the library were evaluated by bacterial colony count and restriction analysis. After two rounds of panning with HBsAg. the phage clones displaying ScFv of the antibody were selected by enzyme-linked immunosorbant assay ( ELISA) from the enriched phage clones. The antigen binding affinity of the positive clone was detected by competition ELISA. HB2151 E. coli was transfected with the positive phage clone demonstrated by competition ELISA for production of a soluble form of the anti-HBsAg ScFv. ELISA assay was used to detect the antigen binding affinity of the soluble anti-HBsAg ScFv. Finally, the relative molecular mass of soluble anti-HBsAg ScFv was measured by SDS-PAGE. RESULTS: The variable heavy ( VH ) and variable light (VL) and ScFv DNAs were about 340bp, 320bp and 750bp, respectively. The volume of the library was up to 2 × 106 and 8 of 10 random clones were recombinants. Two phage clones could strongly compete with the original HBsAb for binding to HBsAg. Within 2 strong positive phage clones, the soluble anti-HBsAg ScFv from one clone was found to have the binding activity with HBsAg. SDS-PAGE showed that the relative molecular weight of soluble anti-HBsAg ScFv was 32 kDa. CONCLUSION: The anti-HBsAg ScFv successfully produced by phage antibody technology may be useful for broadening the scope of application of the antibody.Jian-Lin Zhang, Jian-Jin Guo, Zi-Yan Zhang, Yi-Xin Jing, Lin Zhang, Rui Guo, Ping Yan, Niu-Liang Cheng, Bo Niu and Jun Xie Department of Biochemistry and Molecular Biology, Shanxi Medical University ,Taiyuan 030001,China 2006Hepatobiliary & Pancreatic Diseases International2006,5,2:8
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