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23篇 您的检索式:作者名="GUO Da jun"
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1Mechanism of exogenous nucleic acids and their precursors improving the repair of intestinal epithelium after 7-irradiation in mice显示文摘AIM To clone expressed genes associated withrepair of irradiation-damaged mice intestinalgland cells treated by small intestinal RNA,andto explore the molecular mechanism ofexogenous nucleic acids improving repair ofintestinal crypt.METHODS The animal mode of test group andcontrol group was established,forty-five micebeing irradiated by γ ray were treated with smallintestinal RNA as test group,forty mice beingirradiated by γ ray were treated withphysiological saline as control group,five micewithout irradiation were used as normal control,their jejunal specimens were collectedrespectively at 6h,12h,24h,4d and 8d afterirradiation.Then by using LD-PCR based onsubtractive hybridization,these gene fragmentsdifferentially expressed between test group andcontrol group were obtained,and then werecloned into T vectors as well as beingsequenced.Obtained sequences were screenedagainst.GeneBank,if being new sequences,they were submitted to GeneBank.RESULTS Ninety clones were associated withrepair of irradiation-damaged intestinal glandcells treated by intestinal RNA.These clonesfrom test group of 6h,12h,24h,4d and 8dwere respectively 18,22,25,13,12.By screening against GeneBank,18 of which werenew sequences,the others were dramaticallysimilar to the known sequences,mainly similarto hsp,Nmi,Dutt1,alkaline phosphatase,homeobox,anti-CEA ScFv antibody,arginine/serine kinase and BMP-4,repA.Eighteen genefragments were new sequences,their acceptnumbers in GeneBank were respectivelyAF240164-AF240181.CONCLUSION Ninety clones were obtained tobe associated with repair of irradiation-damagedmice intestinal gland cells treated by smallintestinal RNA,which may be related toabnormal expression of genes and matchedproteins of hsp,Nmi,Duttl,Na,K-ATPase,alkalineph-osphatase,glkA,single strandedreplicative centromeric gene as well as 18 newsequences.Da Xiang Cui~1 Guei Ying Zeng~2 Feng Wang~1 Jun Rong Xu~1 Dong Qing Ren~2 Yan Hai Guo~1 Fu Rong Tian~2 Xiao Jun Yan~1 Yu Hou~1 Cheng Zhi Su~1 1 Institute of Genetic Diagnosis of the Fourth Military Medical University,Xi’an 710032,China 2 Department of Irradiation Medicine of the Fourth Military Medical University,Xi’an 710032,China 2000World Journal of Gastroenterology2000,6,5:8
2H2 strain attenuated live hepatitis A vaccines:protective efficacy in a hepatitis A outbreak显示文摘AIM To investigate the protective efficacy ofH2 strain attenuated live hepatitis A vaccines(H2-strain vaccines)in hepatitis A(HA)outbreaks.METHODS With the permission of theirparents,5551 pre-school and grade 1-3 primaryschool children were inoculated with 1 dose(106.5TCID50)of H2-strain vaccines in anonrandomized,controlled trial conducted inFucheng County,Hebei Province in May 1997.Another 6485 children in the same grades andcompatible in gender and age were enrolled ascontrols.Epidemiological and serological surveywas conducted to evaluate the protectiveefficacy of the vaccines.ELISA was used todetect serum IgM anti-HAV.RESULTS HA outbreak started in early May1998,peaked in the middle of the same month,and lasted about 80 days.Overall 302 HA caseswere found,192(53.58%)were 5-9 years old.One vaccinee and 25 control cases were found tohave hepatitis A,which account for 0.28%(1/356)and 5.92%(25/422)of all vaccinees andcontrols in the 14 villages,respectively.The protective efficacy of vaccines was 95.27%(95% Cl:85.83%-104.72%).In subjects testedfor anti-HAV IgM from 13 villages,1(0.40%)overt and 11(4.06%)asymptomatic HAV caseswere found in 271 vaccinees,but 21(6.69%)ofovert and asymptomatic ones were found in 314controls.CONCLUSION H2 strain vaccines were excellent in preventing overt hepatitis A, but not so effective in preventing asymptomatic hepatitis A virus infection. A booster dose might be needed to get permanent reliable immunity.Yu Liang Zhao Zong Da Meng Zhi Yi Xu Jun Jie Guo Shao Ai Chai Cheng Gang Duo Xuan Yi Wang Jin Feng Yao Hong Bin Liu Shun Xiang Qi Hui Bin Zhu 2000World Journal of Gastroenterology2000,6,6:7
3Total synthesis of bis-(2,3-dibromo-4,5-dihydroxyphenyl)-methane as potent PTP1B inhibitor显示文摘蛋白质酷氨酸磷酸酶 1B (PTP1B ) 作为一个否定管理者起一个重要作用并且被证明了是为类型 2 糖尿病 mellitus 的处理的一个有效目标。二度 --(2,3-dibromo-4,5-dihydroxyphenyl ) 甲烷 7 首先对从红水藻 Rhodomela confervoides 被孤立的 PTP1B 与重要抑制作为自然 bromophenol 被报导。由它的令人震惊的活动好奇(IC50 = 2.4 渭 m ol/L ) ,化合物 7 与 24% 的全面收益被综合并且与自然化合物相比为它的 PTP1B 禁止的活动评估了。Jing Li Shu Ju Guo Hua Su Li Jun Han Da Yong Shi 2008Chinese Chemical Letters2008,19,11:6
4Interferon-induced Transmembrane Protein 3 Prevents Acute Influenza Pathogenesis in Mice显示文摘Objective Interferon-induced transmembrane protein 3(IFITM3)is an important member of the IFITM family.However,the molecular mechanisms underlying its antiviral action have not been completely elucidated.Recent studies on IFITM3,particularly those focused on innate antiviral defense mechanisms,have shown that IFITM3 affects the body’s adaptive immune response.The aim of this study was to determine the contribution of IFITM3 proteins to immune control of influenza infection in vivo.Methods We performed proteomics,flow cytometry,and immunohistochemistry analysis and used bioinformatics tools to systematically compare and analyze the differences in natural killer(NK)cell numbers,their activation,and their immune function in the lungs of Ifitm3-/-and wild-type mice.Results Ifitm3-/-mice developed more severe inflammation and apoptotic responses compared to wild-type mice.Moreover,the NK cell activation was higher in the lungs of Ifitm3-/-mice during acute influenza infection.Conclusions Based on our results,we speculate that the NK cells are more readily activated in the absence of IFITM3,increasing mortality in Ifitm3-/-mice.SUN Qiang LEI Na LU Jian GAO Rong Bao LI Zi LIU Li Qi SUN Ying GUO Jun Feng WANG Da Yan SHU Yue Long 2020Biomedical and Environmental Sciences2020,33,5:4
5A new tetrastilbene from Caragana sinica显示文摘新 tetrastilbene 说出 carasinol D (1 ) 的 A 从锦鸡儿属植物 sinica 的根被孤立。它的结构被分光镜的分析阐明。化合物 1 被催化酸的变换从 carasinol B (2 ) 获得。Ke Jun Cheng Da You Ma Guo Xun Yang Chang Qi Hu 2008Chinese Chemical Letters2008,19,6:4
6A novel linear microprobe array for the fabrication of neural microelectrodes显示文摘A novel linear microprobe array(LMPA)has been developed by a conventional microfabrication method from silicon.The LMPA leverages the properties of conventional microwire with additional features of naturally formed regular spacing.With the help of periodic microprobe arrays and double-side V-grooves fabricated in advance between each pair of the two microprobes’rear ends,the number of microprobe units for assembly in one array can be flexibly chosen by cleavage fracture from the LMPA.The fabrication method was demonstrated and the prototype device was assessed by electrochemical impedance spectroscopy(EIS)and in vivo test.The SNR of the spikes recorded was 6.ZHAO Shan Shan PEI Wei Hua ZHAO Hui WANG Yi Jun CHEN San Yuan CHEN Yuan Fang ZHANG He GUO Dong Mei GUI Qiang CHEN Hong Da 2015Science China(Technological Sciences)2015,58,2:3
7Pilaring of Zn_2Al Layered Double Hydroxide by Dawson Polyoxometalate Anions显示文摘PilaringofZn2AlLayeredDoubleHydroxidebyDawsonPolyoxometalateAnions**SupportedbytheNationalNaturalScienceFoundationofChinaandt...GUO Jun, LI Yunlun, JIAO Qingze** and JIANG Dazhen(Department of Chemistry, Jilin University, Changchun, 130023)MIN Enze(Research Institute of Petroleum Processing, Beijing, 100083) 1998Chemical Research in Chinese Universities1998,14,2:2
8Curcumin Inhibits Proliferation and Induces Apoptosis of Human Colorectal Cancer Cells by Activating the Mitochondria Apoptotic Pathway显示文摘Li‐da Guo Xue‐jie Chen Yu‐hong Hu Zhi‐jun Yu Duo Wang Jing‐ze Liu 2012Phytother. Res2012,,3:2
9High sensitive piezoelectric quartz crystal liquid density sensor显示文摘We report for the first time a cleavage phenomenon in the resonant peak of a piezoelectric quartz crystal(PQC) in liquid phase.In the presence of a strong longitudinal wave effect,an additional resonant peak appears in the conductance-frequency curve.With gradually increasing liquid density,the additional peak moves from low to high frequency region then disappears.The frequency of the additional resonant peak is sensitive to the change in liquid density.The frequency shift of the additional peak is linear with the liquid density in a given range.For a 5 MHz PQC with a reflection distance of 16 mm for longitudinal wave,the sensitivity to liquid density is 2.61×10~6 Hz g^(-1) cm^3.The overlap between the primary resonant peak and the additional resonant peak causes a decrease in the intensity of the former and an increase in the intensity of the latter.In a combined impedance analysis method,the changes in surface mass loading,density and viscosity of the liquid were monitored simultaneously by a PQC sensor.Xue Cai Zhao Jun Guo Du Rui Sheng Qi Kang Da Zhong Shen 2010Chinese Chemical Letters2010,21,9:2
10Coupled fixed points of nonlinear operator with applications显示文摘 LAKHMIKANTHAM V 1987Noniliner Anal TMA1987,11,5:1
11Curcumin Inhibits Proliferation and Induces Apoptosis of Human Colorectal Cancer Cells by Activating the Mitochondria Apoptotic Pathway显示文摘Li‐da Guo Xue‐jie Chen Yu‐hong Hu Zhi‐jun Yu Duo Wang Jing‐ze Liu 2012Phytother Res2012,,3:1
12Periodic Boundary Value Problems for Second Order Impulsive Integro-differential Equations in Banach Space显示文摘GUO Da jun 1997Nonlinear Anal Theory Methods and Applications1997,28,6:1
13Retrograde Type A Aortic Dissection After Endovascular Stent Graft Placement for Treatment of Type B Dissection显示文摘Zhi Hui Dong Wei Guo Fu Yu Qi Wang Da Qiao Guo Xin Xu Yuan Ji Bin Chen Jun Hao Jiang Jue Yang Zhen Yu Shi Ting Zhu Yun Shi 2009Circulation2009,,5:1
14Body-area sensor network featuring micropyramids for sports healthcare显示文摘Monitoring physiological signals of the human body can provide extremely important information for sports healthcare,preventing injuries and providing efficient guidance for individual sports.However,the signals related to human healthcare involve both subtle and vigorous signals,making it difficult for a sensor to satisfy the full-scale monitoring at the same time.Here,a novel conductive elastomer featuring homogeneously micropyramid-structured PDMS/CNT composite is used to fabricate highperformance piezoresistive sensors by a drop-casting method.Benefiting from the significant increase in the contact area of microstructure during deformation,the flexible sensor presents a broad detection range(up to 185.5 kPa),fast response/recovery time(44/13 ms),ultrahigh sensitivity(242.4 kPa–1)and excellent durability over 8,000 cycles.As a proof of concept,the as-fabricated pressure sensor can be used for body-area sports healthcare,and enable the detection of full-scale pressure distribution.Considering the fabulous sensing performance,the sensor may potentially become promising in personal sports healthcare and telemedicine monitoring.Shenglong Wang Weili Deng Tao Yang Guo Tian Da Xiong Xiao Xiao Hongrui Zhang Yue Sun Yong Ao Junfeng Huang Jun Chen Weiqing Yang 2023Nano Research2023,16,1:1
15Retrograde Type A Aortic Dissection After Endovascular Stent Graft Placement for Treatment of Type B Dissection显示文摘Zhi Hui Dong Wei Guo Fu Yu Qi Wang Da Qiao Guo Xin Xu Yuan Ji Bin Chen Jun Hao Jiang Jue Yang Zhen Yu Shi Ting Zhu Yun Shi 2009Circulation2009,,5:1
16Scientific Advances and Weather Services of the China Meteorological Administration’s National Forecasting Systems during the Beijing 2022 Winter Olympics显示文摘Since the Beijing 2022 Winter Olympics was the first Winter Olympics in history held in continental winter monsoon climate conditions across complex terrain areas,there is a deficiency of relevant research,operational techniques,and experience.This made providing meteorological services for this event particularly challenging.The China Meteorological Administration(CMA)Earth System Modeling and Prediction Centre,achieved breakthroughs in research on short-and medium-term deterministic and ensemble numerical predictions.Several key technologies crucial for precise winter weather services during the Winter Olympics were developed.A comprehensive framework,known as the Operational System for High-Precision Weather Forecasting for the Winter Olympics,was established.Some of these advancements represent the highest level of capabilities currently available in China.The meteorological service provided to the Beijing 2022 Games also exceeded previous Winter Olympic Games in both variety and quality.This included achievements such as the“100-meter level,minute level”downscaled spatiotemporal resolution and forecasts spanning 1 to 15 days.Around 30 new technologies and over 60 kinds of products that align with the requirements of the Winter Olympics Organizing Committee were developed,and many of these techniques have since been integrated into the CMA’s operational national forecasting systems.These accomplishments were facilitated by a dedicated weather forecasting and research initiative,in conjunction with the preexisting real-time operational forecasting systems of the CMA.This program represents one of the five subprograms of the WMO’s high-impact weather forecasting demonstration project(SMART2022),and continues to play an important role in their Regional Association(RA)II Research Development Project(Hangzhou RDP).Therefore,the research accomplishments and meteorological service experiences from this program will be carried forward into forthcoming highimpact weather forecasting activities.This article provides an overview and assessment of this program and the operational national forecasting systems.Guo DENG Xueshun SHEN Jun DU Jiandong GONG Hua TONG Liantang DENG Zhifang XU Jing CHEN Jian SUN Yong WANG Jiangkai HU Jianjie WANG Mingxuan CHEN Huiling YUAN Yutao ZHANG Hongqi LI Yuanzhe WANG Li GAO Li SHENG Da LI Li LI Hao WANG Ying ZHAO Yinglin LI Zhili LIU Wenhua GUO 2024Advances in Atmospheric Sciences2024,41,5:0
17The Uptake and Distribution Evidence of Nano-and Microplastics in vivo after a Single High Dose of Oral Exposure显示文摘Objective Tissue uptake and distribution of nano-/microplastics was studied at a single high dose by gavage in vivo.Methods Fluorescent microspheres(100 nm,3μm,and 10μm)were given once at a dose of 200 mg/(kg∙body weight).The fluorescence intensity(FI)in observed organs was measured using the IVIS Spectrum at 0.5,1,2,and 4 h after administration.Histopathology was performed to corroborate these findings.Results In the 100 nm group,the FI of the stomach and small intestine were highest at 0.5 h,and the FI of the large intestine,excrement,lung,kidney,liver,and skeletal muscles were highest at 4 h compared with the control group(P<0.05).In the 3μm group,the FI only increased in the lung at 2 h(P<0.05).In the 10μm group,the FI increased in the large intestine and excrement at 2 h,and in the kidney at 4 h(P<0.05).The presence of nano-/microplastics in tissues was further verified by histopathology.The peak time of nanoplastic absorption in blood was confirmed.Conclusion Nanoplastics translocated rapidly to observed organs/tissues through blood circulation;however,only small amounts of MPs could penetrate the organs.HONG Tao SUN Wei DENG Yuan LYU Jian Da JIN Cui Hong BAI Ying Long NA Jun ZHANG Rui GAO Yuan PAN Guo Wei YANG Zuo Sen YAN Ling Jun 2024Biomedical and Environmental Sciences2024,37,1:0
18Two new bromoindoles from red alga Laurencia similis显示文摘二新 bromoindole 碱从红水藻 Laurencia similis 的 ethanolic 摘录被孤立。根据化学、分光镜的方法(包括的 1D 和 2D NMR 技术) ,他们的结构作为 2,2 ′ 被阐明了;, 5,5 ′, 6,6 ′ -sixibromo-3, 3 ′ -bi-1H-indole 并且 3, 5-dibromo-1-methylindole 分别地。Hua Su Zhao Hui Yuan Jing Li Shu Ju Guo Li Ping Deng Li Jun Han Xiao Bin Zhu Da Yong Shi 2009Chinese Chemical Letters2009,20,4:0
19Intraosseous Implant of Pure Titanium Implant Surface after Micro-arc Oxidation Treatment显示文摘Zhi Hui Tian Ran wei Guo Bing Shu Da Long Nan Kai Kui Wang Ying Jun 2008中国口腔颌面外科杂志2008,6,B05:0
20Development and Assessment of Two Highly Pathogenic Avian Influenza(HPAI) H5N6 Candidate Vaccine Viruses for Pandemic Preparedness显示文摘Objective In China, 24 cases of human infection with highly pathogenic avian influenza(HPAI) H5 N6 virus have been confirmed since the first confirmed case in 2014. Therefore, we developed and assessed two H5 N6 candidate vaccine viruses(CVVs).Methods In accordance with the World Health Organization(WHO) recommendations, we constructed two reassortant viruses using reverse genetics(RG) technology to match the two different epidemic H5 N6 viruses. We performed complete genome sequencing to determine the genetic stability. We assessed the growth ability of the studied viruses in MDCK cells and conducted a hemagglutination inhibition assay to analyze their antigenicity. Pathogenicity attenuation was also evaluated in vitro and in vivo.Results The results showed that no mutations occurred in hemagglutinin or neuraminidase, and both CVVs retained their original antigenicity. The replication capacity of the two CVVs reached a level similar to that of A/Puerto Rico/8/34 in MDCK cells. The two CVVs showed low pathogenicity in vitro and in vivo, which are in line with the WHO requirements for CVVs.Conclusion We obtained two genetically stable CVVs of HPAI H5N6 with high growth characteristics,which may aid in our preparedness for a potential H5N6 pandemic.LIU Li Qi LI Zi JIAO Ming LU Jian ZHOU Jian Fang LI Xi Yan LIU Jia GUO Jun Feng XIAO Ning ZHAO Xiang WANG Da Yan 2020Biomedical and Environmental Sciences2020,33,9:0
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