检索结果-南通市图书馆

Association of the GNAS1 T393C polymorphism with tumor stage and survival in gastric cancer

World Journal of Gastroenterology 2009年第48期15卷 6061-6067页

作者： Hakan Alakus Stefan P Mnig Ute Warnecke-Eberz Gül Alakus Günther Winde Uta Drebber Klaus J Schmitz Kurt W Schmid Kathrin Riemann Winfried Siffert Elfriede Bollschweiler Arnulf H Hlscher ralf metzger Department of General Visceral and Cancer SurgeryCenter for Integrated OncologyUniversity of Cologne Department of Gastrointestinal Surgery Klinikum Herford Institute of Pathology University of Cologne Institute of Pathology and Neuropathology University Hospital of EssenUniversity of Duisburg-Essen Institute of Pharmaco-genetics University Hospital of EssenUniversity of Duisburg-Essen

AIM： To analyze the impact of the GNAS1 T393C polymorphism on prognosis and histopathology of gastric cancer. METHODS： Genomic DNA was extracted from paraffinembedded tissues of 122 patients with primary gastric carcinoma and from the blood of 820 healthy white individuals. Allelic discrimination was performed by quantitative real-time polymerase chain reaction. Genotyping was correlated with histopathologic parameters and with overall survival according to the Kaplan-Meier approach and with multivariate analysis by multiple stepwise regression. RESULTS： Thirty-nine （32%） patients displayed a CC genotype, 57 （46.7%） a CT genotype and 26 （21.3%） a TT genotype. The frequency of the C allele （fC） in the patient group was 0.55, which was not significantly different from that of healthy blood donors. The distribution was compatible with the Hardy-Weinberg equilibrium. Analysis of clinicopathological parameters did not show any significant correlation of the T393C genotype with gender （P = 0.50）, differentiation （P = 0.29）, pT-category （P = 0.19）, pN-category （P = 0.30）, pM-category （P = 0.25）, R-category （P = 0.95）, the classifications according to WHO （P = 0.34）, Lauren （P = 0.16）, Goseki （P = 1.00） and Ming （P =0.74）. Dichotomization between C＋（CC＋CT） and C-genotypes （FI）, however, revealed significantly more advanced tumor stages （P = 0.023） and lower survival rates （P = 0.043） for C allele carriers. CONCLUSION： The present study provides strong evidence to suggest that the GNAS1 T393C allele carrier status influences tumor progression and survival in gastric cancer with higher tumor stages and a worse outcome for C allele carriers.

关键词： Gastric cancer G Protein Polymorphism Prognosis Tumor stage

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Impact of a Hospital’s Workload on Clinical Outcome afterResection for Carcinoma of the Esophagus

引用

The Chinese-German Journal of Clinical Oncology 2004年第4期3卷 244-248页

作者： ralf metzger Elfriede Bollschweiler A. H. Hlscher Department of Visceral- and Vascular Surgery University of CologneDepartment of Visceral- and Vascular Surgery University of CologneDepartment of Visceral- and Vascular Surgery University of Cologne Cologne GermanyCologne GermanyCologne Germany

Surgery for esophageal cancer is a demanding procedure associated with a high rate (30%– 40%) of post-operative complications. Therefore, for esophageal cancer surgery, not only must the surgeon be trained for preoperative preparation, operative therapy, and post-operative management, but also the entire hospital setting including physicians of di?erent specialties and intensive care units. In the past few years publications have been particularly concerned with comparing the outcomes of high-volume centers and other hospitals in cases of various tumor operations. Due to more experience, increased frequency of cases and better training conditions in high-volume centers, esophagectomies have been shown to have better outcomes, especially hospital mortality, when performed there than in centers performing them with less frequency. This review of the current literature for esophageal cancer surgery shows a clear reduction of postoperative mortality with increasing case volume per year. Single papers have analysed the main reasons for this phenomenon and showed that postoperative complication rates are lower in high-volume- hospitals and their management of complications is more succesful. In conclusion, the analysis shows that only with the experience of more than 20 esophagectomies per year a signi?cant reduction of the mortality down to <5% can be achieved.

关键词： esophageal cancer esophagectomy high-volume-hospitals quality control mortality

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Neoadjuvant chemoradiotherapy for esophageal cancer:Impact on extracapsular lymph node involvement

引用

World Journal of Gastroenterology 2010年第16期16卷 1986-1992页

作者： ralf metzger Elfriede Bollschweiler Uta Drebber Stefan P Mnig Wolfgang Schrder Hakan Alakus Martin Kocher Stephan E Baldus Arnulf H Hlscher Department of General Visceral and Cancer SurgeryCenter for Integrated OncologyUniversity Hospital of Cologne Department of Pathology University of Cologne Department of Radiation Oncology University of Cologne Department of Pathology University of Düsseldorf

AIM:To assess the effects of neoadjuvant chemoradiotherapy(CRT) on the presence of extracapsular lymph node involvement(LNI) and its prognostic value in patients with resected esophageal ***:Two hundred and ninety-eight patients with advanced esophageal cancer underwent esophagectomy between 1997 and *** hundred and ninety patients(63.8%) were treated with neoadjuvant CRT prior to resection.A total of 986 metastatic LNs were *** of the patients was analyzed according to intra-and extra-capsular ***:Five-year survival rate was 22.5% for the entire patient *** with extracapsular LNI had a 5-year survival rate of 16.7%,which was comparable to the 15.8% in patients with infiltrated nodes of the celiac trunk(pM1lymph).In contrast to patients treated with surgery alone,neoadjuvant therapy resulted in signif icantly(P = 0.001) more patients with pN0/M0(51.6% vs 25.0%).In 17.6% of the patients with surgery alone vs 16.8% with neoadjuvant CRT,extracapsular LNI was *** therapy does not reduce the occurrence of extracapsular ***:Extracapsular LNI is an independent negative prognostic factor not influenced by neoadjuvant *** a revised staging system for esophageal cancer,extracapsular LNI should be considered.

关键词： Esophageal cancer Neoadjuvant therapy Chemotherapy Radiotherapy Adenocarcinoma Squamous cell carcinoma Lymph node metastasis Extracapsular lymph node involvement Prognosis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advancements in personalized stem cell models for aging-related neurodegenerative disorders

引用

Neural Regeneration Research 2024年第11期19卷 2333-2334页

作者： Mingxi Weng ralf Jauch School of Biomedical Sciences Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Translational Stem Cell Biology Hong Kong Special Administrative RegionChina

Neurodegenerative diseases(NDDs)are a class of disorders characterized by the gradual loss or malfunction of specific cell populations in the nervous system,which can be triggered by genetic or environmental *** a result,patients often experience a decline in mobility,sensation,memory,and cognition,which can ultimately lead to a fatal *** global incidence of NDDs,including Alzheimer’s disease,Parkinson’s disease,Huntington’s disease,amyotrophic lateral sclerosis(ALS),and multiple sclerosis,is increasing.

关键词： degenerative Huntington sensation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Laser-induced plasma formation in water with up to 400 mJ double-pulse LIBS

引用

Plasma Science and Technology 2024年第1期26卷 93-100页

作者： Marion HENKEL Michelle SIEMENS ralf METHLING Benjamin EMDE Jörg HERMSDORF Steffen FRANKE Diego GONZALEZ Leibniz Institute for Plasma Science and Technology(INP) Felix-Hausdorff-Straße 2Greifswald 17489Germany Laser Zentrum Hannover e.V.(LZH) Hollerithallee 8Hannover 30419Germany

Double-pulse LIBS is a promising technique for deep-sea *** measurements in shallow water with up to 400 mJ each pulse were done to select laser parameters which promote optimized spectral line emission from plasma even at elevated pressures,where line broadening until loss of most of the spectral information can *** emission spectroscopy,using a Czerny-Turner spectrometer,has been applied to investigate the dependence of the emitted radiation on laser parameters and hydrostatic *** has been found,that higher laser pulse energies,especially with short pulse delay as required in high water pressure,can also have an adverse effect on the measured spectrum.

关键词： double-pulse LIBS underwater plasma formation emission spectrosocpy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Unraveling the gut-brain axis:the impact of steroid hormones and nutrition on Parkinson's disease

引用

Neural Regeneration Research 2024年第10期19卷 2219-2228页

作者： Paula Maria Neufeld ralf A.Nettersheim Veronika Matschke Matthias Vorgerd Sarah Stahlke Carsten Theiss Department of Cytology Institute of AnatomyMedical FacultyRuhr-University BochumBochumGermany Department of Visceral Surgery University Hospital BergmannsheilRuhr-University BochumBochumGermany Department of Neurology Heimer Institute for Muscle ResearchUniversity Hospital BergmannsheilRuhr-University BochumBochumGermany

This comprehensive review explores the intricate relationship between nutrition,the gut microbiome,steroid hormones,and Parkinson's disease within the context of the gut-brain *** gut-brain axis plays a pivotal role in neurodegenerative diseases like Parkinson's disease,encompassing diverse components such as the gut microbiota,immune system,metabolism,and neural *** gut microbiome,profoundly influenced by dietary factors,emerges as a key *** during the first 1000 days of life shapes the gut microbiota composition,influencing immune responses and impacting both child development and adult ***-fat,high-sugar diets can disrupt this delicate balance,contributing to inflammation and immune *** nutritional strategies,the Mediterranean diet's anti-inflammatory and antioxidant properties show promise in reducing Parkinson's disease ***-targeted dietary approaches and the ketogenic diet hold the potential in improving brain *** nutrition,emerging research uncovers potential interactions between steroid hormones,nutrition,and Parkinson's ***,with its anti-inflammatory properties and presence in the nervous system,offers a novel option for Parkinson's disease *** ability to enhance neuroprotection within the enteric nervous system presents exciting *** review addresses the hypothesis thatα-synuclein aggregates originate from the gut and may enter the brain via the vagus *** symptoms preceding motor symptoms support this *** gut-brain signaling during gut dysbiosis contributes to inflammation and neurotransmitter imbalances,emphasizing the potential of microbiota-based *** summary,this review uncovers the complex web of interactions between nutrition,the gut microbiome,steroid hormones,and Parkinson's disease within the gut-brain axis *** these connections not only offers novel therapeutic insi

关键词： diet gut-brain axis microbiome neurodegenerative diseases nutrition Parkinson's disease progesterone steroid hormones

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Novel C_(sf)/SiBCN composites prepared by densifying C_(sf)/MA-SiBCN with the PIP process:Oxidation behavior and damage mechanism

引用

Journal of Advanced Ceramics 2024年第5期13卷 666-678页

作者： Wenhao Dou Daxin Li Bingzhu Wang Zhihua Yang Jun Chen Dechang Jia ralf Riedel Yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Advanced Structural-Functional Integration Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China Chongqing Research Institute of HIT Chongqing 401135China Beijing Institute of Control Engineering Beijing 100094China Institut für Materialwissenschaft Technische Universität DarmstadtDarmstadt D-64287Germany School of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China

To improve the oxidation resistance of short carbon fiber(C_(sf))-reinforced mechanically alloyed SiBCN(MA-SiBCN)(C_(sf)/MA-SiBCN)composites,dense amorphous C_(sf)/SiBCN composites containing both MA-SiBCN and polymer-derived ceramics SiBCN(PDCs-SiBCN)were prepared by repeated polymer infiltration and pyrolysis(PIP)of layered C_(sf)/MA-SiBCN composites at 1100℃,and the oxidation behavior and damage mechanism of the as-prepared C_(sf)/SiBCN at 1300–1600℃ were compared and discussed with those of C_(sf)/*** C_(sf)/MA-SiBCN composites resist oxidation attack up to 1400℃ but fail at 1500℃ due to the collapse of the porous framework,while the PIP-densified C_(sf)/SiBCN composites are resistant to static air up to 1600℃.During oxidation,oxygen diffuses through preexisting pores and the pores left by oxidation of carbon fibers and pyrolytic carbon(PyC)to the interior of the *** to the oxidative coupling effect of the MA-SiBCN and PDCs-SiBCN matrices,a relatively continuous and dense oxide layer is formed on the sample surface,and the interfacial region between the oxide layer and the matrix of the as-prepared composite contains an amorphous glassy structure mainly consisting of Si and O and an incompletely oxidized but partially crystallized matrix,which is primarily responsible for improving the oxidation resistance.

关键词： mechanically alloyed SiBCN(MA-SiBCN) polymer-derived ceramics SiBCN(PDCs-SiBCN) short carbon fiber-reinforced SiBCN(C_(sf)/SiBCN)composites polymer infiltration and pyrolysis(PIP) oxidation damage mechanism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Alterations of Lymphoid Enhancer Factor-1 Isoform Expression in Solid Tumors and Acute Leukemias

引用

Acta Biochimica et Biophysica Sinica 2005年第3期37卷 173-180页

作者： Wenbing WANG Ping JI Bjrn STEFFEN ralf metzger Paul M.SCHNEIDER Hartmut HALFTER Mark SCHRADER Wolfgang E.BERDEL Hubert SERVE Carsten MLLER-TIDOW Institute of Life Sciences,Jiangsu University,Zhenjiang 212013.China Hematology and Oncology.and Neurology,Department of Medicine,University of Mnster,D-48129 Mnster,Germany Dematology of Visceral and Vascular Surgery,University of Cologne,D-50931 Cologne,Germany Department of Urolooy,Free University Berlin,D-12200 Berlin. InstituteofLifeSciences JiangsuUniversityZhenjiang212013China

Two major transcripts of lymphoid enhancer factor-1(LEF-1)have been *** longisoform with β-catenin binding domain functions as a transcriptional enhancer *** short isoformderives from an intronic promoter and exhibits dominant negative ***,alterations of LEF-1isoforms distribution have been described in colon *** the current study we employed a quantitativereal-time reverse transcription PCR method(TaqMan)to analyze expression of LEF-1 isoforms in a largecohort of human tumor(n=304)and tumor-free control samples(n=56).The highest expression level ofLEF-1 was found in carcinoma samples whereas brain cancer samples expressed *** of LEF-1 was different in distinct cancer *** example,the mRNA level of LEF-1 was lower in testiculartumor samples compared with tumor-free control *** epithelial cancers,significant LEF-1expression was also found in hematopoietic *** hematological malignancies,overall LEF-1 level washigher in lymphocytic leukemias compared with myeloid leukemias and normal ***,acute myeloid leukemia and acute lymphocytic leukemia showed a significantly increased fraction of theoncogenic LEF-1 compared with chronic lymphocytic leukemia and chromc myeloid *** together,these data suggest that LEF-1 is abundantly expressed in human tumors and the ratio of the oncogenic andthe dominant negative short isoform altered not only in carcinomas but also in leukemia.

关键词： AML β-catenin isoform lymphoid enhancer factor(LEF-1) solid tumor

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

德鲁巴必看趋势，前沿喷墨印刷技术应用场景广阔

引用

印刷经理人 2024年第5期 52-53页

作者：隋缘 ralf Schl zer

随着我们生活不断发生变化，大众对印刷品的需求也随之发生改变。喷墨印刷技术之所以特别，不仅因其能够满足多样化的印刷应用需求，更因喷墨印刷设备种类广泛，覆盖范围从入门级到高端。而多样化的选择能降低企业拓展新业务的风险，并...

随着我们生活不断发生变化，大众对印刷品的需求也随之发生改变。喷墨印刷技术之所以特别，不仅因其能够满足多样化的印刷应用需求，更因喷墨印刷设备种类广泛，覆盖范围从入门级到高端。而多样化的选择能降低企业拓展新业务的风险，并为企业提供探索新领域的可能性。

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The new kid on the block in insect pest management:sprayable RNAi goes commercial

引用

Science China(Life Sciences) 2024年第8期67卷 1766-1768页

作者： Junjie Yan ralf Nauen Stuart Reitz Andrei Alyokhin Jiang Zhang David Mota-Sanchez Yonggyun Kim Subba Reddy Palli Silvia I.Rondon Brian A.Nault Juan Luis Jurat-Fuentes Michael S.Crossley William E.Snyder Angharad M.R.Gatehouse Myron P.Zalucki Bruce E.Tabashnik Yulin Gao State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Bayer AG Crop Science DivisionR&DPest ControlMonheim 40789Germany Department of Crop and Soil Science Oregon State UniversityOntario 97914USA School of Biology and Ecology University of MaineOrono 04469USA Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China Department of Entomology Michigan State UniversityEast Lansing 48864USA Department of Plant Medicals Andong National UniversityAndong 36729Republic of Korea Department of Entomology University of KentuckyLexington 40503USA Oregon State University Oregon Integrated Pest Management CenterCorvallis 97838USA Department of Entomology Cornell UniversityCornell AgriTechGeneva 14456USA Department of Entomology and Plant Pathology University of TennesseeKnoxville 37996USA Department of Entomology and Wildlife Ecology University of DelawareNewark 19716USA Department of Entomology University of GeorgiaAthensGeorgia 30602USA School of Natural and Environmental Sciences Newcastle UniversityNewcastle upon TyneNE17RUUK School of the Environment University of QueenslandBrisbane 4072Australia Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management College of Plant Health and MedicineQingdao Agricultural UniversityQingdao 266109China Department of Entomology University of ArizonaTucson 85721USA National Center of Excellence for Tuber and Root Crop Research Chinese Academy of Agricultural SciencesBeijing 100081China

Insect pest damage to crops is a threat to global food security(Tilman et al.,2011).Climate change,the evolution of insecticide resistance,and the phasing out of insecticides due to environmental and safety concerns exacerbate this *** urgently need safe and effective crop protection tools to sustainably generate yields that meet ever-increasing global demand.

关键词： crops damage pest

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：