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1Recurrence or metastasis of HCC:predictors,early detection and experimental antiangiogenic therapy显示文摘AIM To investigate the predictors forrecurrence or metastasis of HCC,and toevaluate the effect of antiangiogenic therapy onthe growth of transplantable human HCC in nudemice.METHODS RT-PCR was used to measure theexpression of matrix metalloproteinase-9(MMP-9)and vascular endothelial growth factor(VEGF)in 56 pairs of nontumorous liver andtumor samples.Sixty blood samples from humanHCC were examined by nested RT-PCR to find outAFP mRNA.Recombinant human endostatin andpolyclonal antibody against VEGF wereadministered to treat human HCC transplanted innude mice.RESULTS Thirty of 56 HCC samples showedstronger expression of MMP-9 in tumoroustissues than in nontumorous tissues.Fifteen ofthe 26 patients with relative expression level ofMMP-9 more than 0.34 developed tumorrecurrence or metastasis,whereas only 7 of 30patients with relative expression level less than0.34 developed tumor recurrence(P<0.05).There was no significant difference in therelative expression level of VEGF betweenpatients with postoperative recurrence ormetastasis and those without recurrence.AFPmRNA was detectable in 53.3% of patients withHCC.The sensitivity and specificity of AFPmRNA as a marker to detect hematogenousdissemination of HCC cells was 81.8% and84.4%,respectively.Recombinant human endostatin and polyclonal antibody against VEGFinhibited the growth of transplantable HCC innude mice by 52.2% and 45.7%,respectively.CONCLUSION MMP-9 expression in HCCcorrelates with the postoperative recurrence ormetastasis of HCC.Patients with high level ofMMP-9 expression in HCC are susceptible tometastasis.AFP mRNA could serve as anindicator of hematogenous spreading of HCCcells in circulation and a predictor of recurrenceor metastasis of HCC.Antiangiogenesis may bean adjuvant therapy for HCC.Jiang YF Yang ZH Hu JQ 2000World Journal of Gastroenterology2000,6,1:57
2医学领域一次研究和二次研究的方法学质量(偏倚风险)评价工具显示文摘方法学质量(偏倚风险)评估是医学研究开始前的重要步骤。因此,准确判断研究类型是前提,选择合适的评价工具也很重要。本综述介绍了用于随机对照试验(包括个体和整群)、动物实验、非随机干预性研究(包括随访研究、有对照组的前后对照研究、前后对照研究、非对照纵向研究、间断时间序列研究)、队列研究、病例-对照研究、横断面研究(包括分析和描述性研究)、观察性病例系列和病例报告、比较效果研究、诊断性研究、卫生经济学评价、预测研究(包括预测变量研究、预测模型影响研究、预后预测模型研究)、质性研究、结果测量工具(包括患者-报告的结果测量发展、内容真实性、结构真实性、内部一致性、跨文化真实性/测量不变性、信度、测量误差、校标真实性、结构真实性假设检验、反应度)、系统评价与Meta分析,以及临床实践指南的方法学质量评价工具。通过本综述,读者可以区分医学研究的类型并选择适当的工具。全面掌握相关知识并多加练习是正确评估方法学质量的基本要求。李柄辉 訾豪 李路遥 王朝阳 任学群 郭毅(译) Ma LL Wang YY Yang ZH 2021医学新知2021,31,1:37
3Vasculogenic mimicry is a prognostic factor for postoperative survival in patients with glioblastoma显示文摘A previous report has confirmed the existence and clinical significance of vasculogenic mimicry(VM)in glioma.However,its conclusions about the negative clinical significance of VM in glioblastoma are based on a small group of patients and,thus,might be unconvincing.The aim of the present study was to reevaluate the clinical significance of VM in glioblastoma.Patients were classified as VM-positive orWang SY Ke YQ Lu GH Song ZH Yu L Xiao S Sun XL Jiang XD Yang ZL Hu CC 2013中国神经肿瘤杂志2013,11,3:22
4Comparison of methods for total community DNA extraction and purification from compost显示文摘Yang ZH Xiao Y Zeng GM Xu ZY Liu YS 2007中国生物学文摘2007,21,8:18
5乳腺癌组织中TP和TS及DPD mRNA表达与预后的关系显示文摘目的 探讨乳腺癌组织中胸苷酸化酶 (TP)、胸苷酸合成酶 (TS)和二氢嘧啶脱氢酶(DPD)mRNA表达水平及其与预后的关系。方法 采用real time定量PCR技术检测经过微选的 9例正常乳腺组织和 86例乳腺癌组织TP、TS和DPD的mRNA表达水平。结果 肿瘤组织中TP、TS和DPDmRNA表达水平中位数分别为 16 .5 4 ,0 .38和 2 .74 ,正常乳腺组织分别为 11.75 ,0 .2 5和 8.33,差异均无显著性 (P >0 .0 5 )。除年龄与DPD表达呈负相关外 ,TP、TS和DPDmRNA表达与肿瘤体积、淋巴结转移、组织学分级、临床分期均无相关性。TP、DPD高表达组和低表达组之间 ,无瘤生存期和总生存期差异均无显著性。TS高表达组和低表达组无瘤生存期差异无显著性 (P =0 .0 6 9) ;平均总生存期分别为 5 9.0 0和 70 .30个月 ,差异有显著性 (P =0 .0 4 96 )。结论 仅检测TSmRNA对判断乳腺癌预后有参考价值 ,同时检测TP、TS和DPD具有更好的预测价值。李惠翔 Suo ZH 张云汉 Bjrn Risberg Mats G Karlsson Jahn M Nesland 2004中华肿瘤杂志2004,26,11:9
6特利加压素治疗肝硬化腹水不伴肝肾综合征的效果显示文摘【据《Can J Gastroenterol Hepatol》2020年6月报道】题:特利加压素治疗肝硬化腹水不伴肝肾综合征患者的作用:一项针对现有证据的系统评价(作者Bai ZH等)腹水是肝硬化患者的常见并发症,肝硬化伴腹水患者易发生急性肾损伤或肝肾综合征,并可能在腹腔穿刺术后并发循环功能障碍。目前,特利加压素并非肝硬化腹水的主要治疗选择。本研究旨在系统回顾有关特利加压素在肝硬化腹水不伴肝肾综合征患者中使用的证据。BAI ZH AN Y GUO XZ 白朝辉 祁兴顺 2020临床肝胆病杂志2020,36,8:9
7Integrated positron emission tomography and computed tomography in preoperative lymph node staging of non-small cell lung cancer显示文摘Xu N Jiao Y Fang WG Wang MZ Zhu ZH Zhang YQ 2014Chinese Medical Journal2014,,4:8
8Involvement of apoptosis of alveolar epithelial cells in acute pancreatitis-associated lung injury显示文摘INTRODUCTIONAcute pancreatitis in a common and potentially fataldisease which is associated with considerablemorbidity and a mortality rate of approximately30%;its pathogenesis remains unknown.Thecause of death is often due to multiple organYuan YZ Gong ZH Lou KX Tu SP Zhai ZK Xu JY 2000World Journal of Gastroenterology2000,6,6:7
9Cloning of differentially expressed genes in human hepatocellular carcinoma and nontumor liver显示文摘INTRODUCTIONThe mechanism of hepatocellular carcinoma(HCC)is still unclear,although some genes have been found to play a role in the transformation of liver cells,and a variety of studies have described differences in gene expression which distinguished tumor from nontumor[1-6].The new genes,especially the functional genes directly related with tumor are still worth being found.The purpose of our study is to find the different genes between human liver tumor and normal tissues using suppression subtractive hybridization.Xiao-Yan Cao Jie Liu Zhao-Rui Lian Marcy Clayton Jia-Lu Hu Ming-Hua Zh Dai-Ming Fan Mark Feitelson Institute of Digestive Diseases,Xijing Hospital,Fourth Military Medical University,Xi’an 710033,Shaanxi Province,ChinaDepartment of Pathology & Cell Biology,Thomas Jefferson University,Philadelphia,PA19107 USADepartment of Pathology,Second Military Medical University,Shanghai 200433,China 2001World Journal of Gastroenterology2001,7,4:7
10Aequorin-Based Luminescence Imaging Reveals Stimulus-and Tissue-Specific Ca^2+ Dynamics in Arabidonsis Plants显示文摘Xiaohong Zh Ying Feng Gaimei Liang Na Liu Jian-Kang Zhua 2013Molecular Plant2013,6,2:6
11Overexpression/amplification of HER-2/neu is uncommon in hepatocellular carcinoma显示文摘Xian ZH Zhang SH Cong WM Wu WQ Wu MC 2005第二军医大学学报2005,26,11:6
12Expression of aspartyl beta-hydroxylase and its clinicopathological significance in hepatocellular carcinoma显示文摘Xian ZH Zhang SH Cong WM Yan HX Wang K Wu MC 2006第二军医大学学报2006,27,5:6
13Inhibitory activity of polysaccharide extracts from three kinds of edible fungi on proliferation of human hepatoma SMMC-7721 cell and mouse implanted S180 tumor显示文摘AIM To determine the activities ofpolysaccharide extracts from Flammulina velutipes (Curt. ex Fr. ) Sing (FV), Lentinusedodes (LE) and Agaricus bisporus Sing (AB)on the proliferation of human hepatoma SMMC-7721 cells in vitro and on mouse implanted S-180tumors in vivo.METHODS The polysaccharide extracts were isolated from the fruit bodies of FV, LE and AB by the methods of hot-water extraction, Sevag’sremoval of proteins, ethanol precipitation,trypsin digestion and ethanol fractionalprecipitation. Human hepatoma SMMC-7721 cells were treated with 50 mg/L Polysaccharide extracts, and the mitosis index, mitochondria activity and cell proliferation were detected at different times in both control and experimental groups. The mice with S-180 implanted tumors were injected with the polysaccharide extracts at 24 mg/ kg body weight for 9 d and the tumorweight was measured on the 15th day.RESULTS The mitosis index of hepatoma cells in vitro could be significantly decreased by treatment with the polysaccharide extracts fromthe three kinds of edible fungi (P < 0 .005 ). Thecell numbers and mitochondria activity of SMMC7721 cells treated with polysaccharide extracts were lower than those in control groups (P <0.005). The inhibition rates of polysaccharide extracts against implanted S-180 tumors in mice were 52.8%, 56.6% and 51 .9% respectivelycompared with that in c0ntrol gr0ups.CONCLUSI0N The POIysaccharide extractsfrom the three kinds of edible fungi could inhibitnot only the Cultured malignant cells in vitfO butalso impIanted Sl80 tum0r i0 vivo.Jiang SM Xiao ZM Xu ZH 1999World Journal of Gastroenterology1999,5,5:5
14A FINITE-ELEMENT ANALYSIS OF ELECTROMAGNETIC SHEET METAL-EXPANSION PROCESS显示文摘1INTRODUCTIONElectromagneticforming,esentialybeingakindofapplicationofimpulseintensivecurenttechniqueinmetalworking,dealswith...Huang, SY Chang, ZH Wang, ZR Wang, LF Yang, M 1998中国有色金属学会会刊:英文版1998,8,3:4
15Molecular cloning of differentially expressed novel rice genes induced by Magnaporthe grisea显示文摘WE have applied the differential display (D. D.) of mRNA method to detect and clone tran-scripts that were differentially expressed between rice NILs (Near-isogenic lines) H7R (resis-tant) and H7S (susceptible) which were induced by Magnaporthe grisea. The cDNA gene-tags obtained from D. D. analysis were reamplified by PCR and screened by SouthernHe, ZH Dong, HT Cheng, SJ Wu, YL Dong, JX Li, DB 1997Chinese Science Bulletin1997,42,20:4
16First-principles simulations of iron with nitrogen:from surface adsorption to bulk diffusion显示文摘Adsorption,absorption and diffusion pathways of nitrogen are studied for ferromagnetic body-centered cubic iron via spin-polarized density functional theory in combination with the climbing image nudged elastic band method.The computed data suggest that,depending on the coverage of N atoms,N prefers to stay on particular surface sites.Once pinned down well below the surface,N prefers to move into octahedral interstices rather than tetrahedral interstices.However,the tetrahedral interstices are crucial because they act as transition states and yield the saddle point energies of the corresponding minimum energy pathways.In comparison with carbon,we found that nitrogen prefers a different pathway from the(1 0 0)surface to the subsurface due to its strong repulsive interaction with Fe ions.MH Wu XH Liu 顾剑锋 ZH Jin 2013功能材料信息2013,10,4:3
17脂质组学改善传统危险因素预测的2型糖尿病患者的心血管事件显示文摘临床脂质测定并未显示出糖尿病或心血管病相关的脂质代谢改变的复杂性。脂质组学则能够评估可作为疾病风险潜在标志物的数百种脂质种类。方法:纳入来自糖尿病治疗和血管保护行动。刘莉 叶鹏 Alshehry ZH Mundra PA Barlow CK Mellett NA Wong G McConville MJ Simes J Tonkin AM Sullivan DR Barnes EH Nestel PJ Kingwell BA Marre M Neal B Poulter NR Rodgers A Williams B Zoungas S Hillis GS Chalmers J Woodward M Meikle PJ 2016中华高血压杂志2016,24,10:3
18显示文摘The phase formation regularities in nanometer powders of ternary alloys prepared by gas evaporation process with induction current as the heating source were investigated. Al-Cu-Mn and Al-Cu-Cr were chosen as the samples in this study. The experimental results show that the necessary conditions for forming ternary compound phases in a ternary alloy nanometer powder are that they must be able to form in a conventional bulk alloy. To obtain a ternary compound phase in nanometer powders, composition of the master alloy must be in a certain range. Changing the composition of the master alloy and evaporation temperature can control the kinds of the phases and their relative amount in the alloy nanometer powders. In present study, AlMn, Al8Mn5 and AlCu2Mn phases formed in as-prepared nanometer powders of Al-Cu-Mn alloy, and the highest relative amount of AlCu2Mn phase is about 99%. In nanometer powders of Al-Cu-Cr alloy,Cu9Al4, Al2Cu3, AlCr2 and Al13Cr2 phases formed without any ternary compound phase.Yan, HG Chen, ZH Kang, ZT Chen, G Hunag, PY 2001中国有色金属学会会刊:英文版2001,11,6:3
19Magneto-rheological elastomer (MRE) based composite structures for micro-vibration control显示文摘Magneto-rheological elastomers (MREs) are used to construct composite structures for micro-vibration control of equipment under stochastic support-motion excitations.The dynamic behavior of MREs as a smart viscoelastic material is characterized by a complex modulus dependent on vibration frequency and controllable by external magnetic fields.Frequency-domain solution methods for stochastic micro-vibration response analysis of the MRE-based structural systems are developed to derive the system frequency-response function matrices and the expressions of the velocity response spectrum.With these equations, the root-mean-square (RMS) velocity responses in terms of the one-third octave frequency band spectrum can be calculated.Further, the optimization problem of the complex moduli of the MRE cores is defined by minimizing the velocity response spectra and the RMS velocity responses through altering the applied magnetic fields.Simulation results illustrate the influences of MRE parameters on the RMS velocity responses and the high response reduction capacities of the MRE-based structures.In addition, the developed frequency-domain analysis methods are applicable to sandwich beam structures with arbitrary cores characterized by complex shear moduli under stochastic excitations described by power spectral density functions, and are valid for a wide frequency range.YQ Ni ZG Ying ZH Chen 2010Earthquake Engineering and Engineering Vibration2010,9,3:2
20A Model for Liquid-Diffusion Catalytically Grown Fibrous Carbon Material显示文摘A mechanism for the catalytically growth of vapor grown fibrous carbon (VGFC) preparing from the floating catalyst method has been proposed, in which liquid diffusion-determined diffusionof carbon atoms through catalyst particles is described mathematically, and the physical andchemical properties of the catalyst particIes during the growth process are taken into account.From the model the growth rate and grown length of VGFC are calculated theoretically whichcoincides with the experimental datal and the necessity of reducing gas such as hydrogen inpreparing VGFC is explained as to reduce Fe3C, which acts as intermediate catalyst shown bythe model. Fe3C formed on the surface of γ-Fe will stop the growth of carbon fiber if they cannot be reduced at once. Additionally, the growth temperature and diameter of VGFC are alsodiscussed in the paper.Zhang, WG Cheng, HM Su, G Fan, YY Li, F Shen, ZH Zhou, BL 1999Journal of Materials Science & Technology1999,15,1:2
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