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1Lateral lymph node dissection for low rectal cancer: Is it necessary?显示文摘Rectal cancer constitutes a major public health issue.Total mesorectal excision has remained the gold standard treatment for mid and low rectal tumors since its introduction in the late 1980s.Removal of all lymph nodes located in the mesorectum has indeed improved pathological and oncological outcomes.However,when cancer spreads to the lateral lymph nodes(located along the iliac and obturator arteries)Western and Japanese practices differ.Where the Western guidelines consider this condition as an advanced form of the disease and use neoadjuvant radiochemotherapy liberally,the Japanese guidelines define it as a local disease and proceed to lateral lymph node dissection with or without neoadjuvant treatment.Herein,we review the current literature regarding both therapeutic strategies,with the aim of contributing to potential improvements in treatment and outcome for patients with low and mid rectal cancer.Niki Christou Jeremy Meyer Christian Toso Frédéric Ris Nicolas Christian Buchs 2019World Journal of Gastroenterology2019,25,31:11
2Nat Biotechnol:将人星形胶质细胞重编程为多巴胺能神经元,有助治疗帕金森病显示文摘帕金森病是一种主要影响运动系统的神经退行性疾病。它的特征在于大脑中的多巴胺能神经元(dopaminergic neuron)渐进性丧失。尽管当前的疗法旨在补充多巴胺水平,但是没有一种疗法能够恢复这些丢失的细胞。如今。在一项新的研究中,来自瑞典、奥地利、西班牙和美国的研究人员开发出一种方法:将神经胶质细胞(glialcell)转化为活性的多巴胺能神经元,并且所产生的多巴胺能神经元能够部分恢复帕金森病模式小鼠的运动功能。这项概念验证研究可能为开发出一种治疗这种疾病的新方法铺平道路。Pia Rivetti di Val Cervo, Elisa Martín-Montañez, Enrique M Toledo, Gioele La Manno, Sara Padrell Sánchez, Sten Linnarsson Ernest Arenas Roman A Romanov, Christian Pifl Tibor Harkany Roman A Romanov, Giada Spigolon, Débora Masini, Michael Feyder, Tibor Harkany Gilberto Fisone Elisa Martín-Montañez Yi-Han Ng Marius Wernig 2017现代生物医学进展2017,17,17:11
3Intentional ingestions of foreign objects among prisoners: A review显示文摘The intentional ingestion of foreign objects(IIFO) is described more commonly in prison populations than in the general population, with an estimated annual incidence of 1 in 1900 inmates in our state correctional facilities. Incidents often involve ingestion of small metal objects(e.g., paperclips, razor blades) or other commonly available items like pens or eating utensils. Despite ingestion of relatively sharp objects, most episodes can be clinically managed with either observation or endoscopy. Surgery should be reserved for those with signs or symptoms of gastrointestinal perforation or obstruction. For those with a history of IIFO, efforts should focus on prevention of recurrenceas subsequent episodes are associated with higher morbidity, significant healthcare and security costs. The pattern of IIFO is often repetitive, with escalation both in frequency of ingestions and in number of items ingested. Little is known about successful prevention strategies, but efforts to monitor patients and provide psychiatric care are potential best-practice strategies. This article aims to provide state-of-the art review on the topic, followed by a set of basic recommendations.David C Evans Thomas R Wojda Christian D Jones Andrew J Otey Stanislaw P Stawicki 2015World Journal of Gastrointestinal Endoscopy2015,7,3:10
4基于MDE的异构模型转换:从MARTE模型到FIACRE模型显示文摘通过研究一个具有代表性的UML/MARTE(unified modeling language/modeling and analysis of real time and embedded systems)模型向FIACRE(intermediate format for the architectures of embedded distributed components)形式模型的转换实例,探讨了异构模型之间在语义和语法层的相互转换问题.在语义层,通过模型转换技术构造语义映射规则,实现元语言之间的转换;在语法层,通过构造元模型的具体语法,反映元语言的语法规则,从而产生目标模型的程序实体.基于此实例研究,探讨了通用转换途径的相关框架和关键技术,并讨论了转换工作的优缺点和实用性.张天 Frédéric JOUAULT Christian ATTIOGBE Jean BEZIVIN 李宣东 2009软件学报2009,20,2:9
5Isolation and characterisation of human gingival margin-derived STRO-1/MACS^+ and MACS^-cell populations显示文摘Recently,gingival margin-derived stem/progenitor cells isolated via STRO-1/magnetic activated cell sorting(MACS) showed remarkable periodontal regenerative potential in vivo.As a second-stage investigation,the present study's aim was to perform in vitro characterisation and comparison of the stem/progenitor cell characteristics of sorted STRO-1-positive(MACS^+) and STRO-1-negative(MACS^-) cell populations from the human free gingival margin.Cells were isolated from the free gingiva using a minimally invasive technique and were magnetically sorted using anti-STRO-1 antibodies.Subsequently,the MACS^+ and MACS^- cell fractions were characterized by flow cytometry for expression of CD14,CD34,CD45,CD73,CD90,CD105,CD146/MUC18 and STRO-1.Colony-forming unit(CFU) and multilineage differentiation potential were assayed for both cell fractions.Mineralisation marker expression was examined using real-time polymerase chain reaction(PCR).MACS^+ and MACS- cell fractions showed plastic adherence.MACS^+ cells,in contrast to MACS- cells,showed all of the predefined mesenchymal stem/progenitor cell characteristics and a significantly higher number of CFUs(P<0.01).More than 95%of MACS^+ cells expressed CD105,CD90 and CD73;lacked the haematopoietic markers CD45,CD34 and CD14,and expressed STRO-1 and CD146/MUC18.MACS- cells showed a different surface marker expression profile,with almost no expression of CD14 or STRO-1,and more than 95%of these cells expressed CD73,CD90 and CD146/MUC18,as well as the haematopoietic markers CD34 and CD45 and CD105.MACS^+ cells could be differentiated along osteoblastic,adipocytic and chondroblastic lineages.In contrast,MACS- cells demonstrated slight osteogenic potential.Unstimulated MACS^+ cells showed significantly higher expression of collagen I(P<0.05) and collagen III(P<0.01),whereas MACS^- cells demonstrated higher expression of osteonectin(P<0.05;MannWhitney).The present study is the first to compare gingival MACS^+ and MACS- cell populations demonstrating that MACS^+ cells,in contrast to MACS- cells,harbour stem/progenitor cell characteristics.This study also validates the effectiveness of the STRO-l/MACS^+technique for the isolation of gingival stem/progenitor cells.Human free gingival margin-derived STRO-1/MACS^+ cells are a unique renewable source of multipotent stem/progenitor cells.Karim M Fawzy El-Sayed Sebastian Paris Christian Graetz Neemat Kassem Mohamed Mekhemar Hendrick Ungefroren Fred Fndrich Christof Drfer 2015International Journal of Oral Science2015,7,2:6
6Earnings management and investor protection: an international comparison显示文摘Christian Leuz Dhananjay Nanda Peter D Wysocki 2003Journal of Financial Economics2003,,3:5
7Bcl-2 degradation is an additional pro-apoptotic effect of polo-like kinase inhibition in cholangiocarcinoma cells显示文摘AIM To examine the influence on apoptotic mechanisms following inhibition of polo-like kinases as therapeuticallyapproach for cholangiocellular cancer treatment. METHODS As most cholangiocarcinomas are chemotherapyresistant due to mechanisms preventing tumor cell death, we investigated the effect of Cisplatin on cholangiocellular carcinoma(CCA) cell lines KMCH-1 and Mz-Ch-1. Polo-like kinases(PLK) are important regulators of the cell cycle and their inhibition is discussed as a potential therapy while PLK inhibition can regulate apoptotic mediators. Here, cells were treated with PLK inhibitor BI6727(Volasertib), Cisplatin, and in combination of both compounds. Cell viability was assessed by MTT; apoptosis was measured by DAPI staining and caspase-3/-7 assay. Western blot and q RT-PCR were used to measure expression levels of apoptosis-related molecules Bax and Bcl-2. RESULTS The cell viability in the CCA cell lines KMCH-1 and Mz-Ch-1 was reduced in all treatment conditions compared to vehicle-treated cells. Co-treatment with BI6727 and cisplatin could even enhance the cytotoxic effect of cisplatin single treatment. Thus, co-treatment of cisplatin with BI6727 could slightly enhance the cytotoxic effect of the cisplatin in both cell lines whereas there was evidence of increased apoptosis induction solely in Mz-Ch-1 as compared to KMCH-1. Moreover, PLK inhibition decreases protein levels of Bcl-2; an effect that can be reversed by the proteasomal degradation inhibitor MG-132. In contrast, protein levels of Bax were not found to be altered by PLK inhibition. These findings indicate that cytotoxic effects of Cisplatin in Mz-Ch-1 cells can be enhanced by co-treatment with BI6727.CONCLUSION In conclusion, BI6727 treatment can sensitize CCA cells to cisplatin-induced apoptosis with proteasomal Bcl-2 degradation as an additional pro-apoptotic effect.Svenja Sydor Sami Jafoui Lena Wingerter Sandra Swoboda Joachim C Mertens Guido Gerken Ali Canbay Andreas Paul Christian D Fingas 2017World Journal of Gastroenterology2017,23,22:5
8Noninvasive detection and evaluation of atherosclerotic coronary plaques with multislice computed tomography 1 1 This study was performed without additional financial support.显示文摘Stephen Schroeder Andreas F Kopp Andreas Baumbach Christoph Meisner Axel Kuettner Christian Georg Bernd Ohnesorge Christian Herdeg Claus D Claussen Karl R Karsch 2001Journal of the American College of Cardiology2001,,5:3
9Combination of corticosteroids and 5-aminosalicylates or corticosteroids alone for patients with moderate-severe active ulcerative colitis:A global survey of physicians'practice显示文摘AIM To examine treatment decisions of gastroenterologists regarding the choice of prescribing 5-aminosalycilates(5ASA) with corticosteroids(CS) versus corticosteroids alone for patients with active ulcerative colitis(UC). METHODS A cross-sectional questionnaire exploring physicians' attitude toward 5ASA + CS combination therapy vs CS alone was developed and validated. The questionnaire was distributed to gastroenterology experts in twelve countries in five continents. Respondents' agreement with stated treatment choices were assessed by standardized Likert scale. Background professional characteristics of respondents were analyzed for correlation with responses. RESULTS Six hundred and sixty-four questionnaires were distributed and 349 received(52.6% response rate). Of 340 eligible respondents, 221(65%) would continue 5ASA in a patient hospitalized for intravenous CS treatment due to a moderate-severe UC flare, while 108(32%) would stop the 5ASA(P < 0.001), and 11(3%) are undecided. Similarly, 62% would continue 5ASA in an out-patient starting oral CS. However, only 140/340(41%) would proactively start 5ASA in a hospitalized patient not receiving 5ASA before admission. Most(94%) physicians consider the safety profile of 5ASA as very good. Only 52% consider them inexpensive, 35% perceive them to be expensive and 12% are undecided. On multi-variable analysis, less years of practice and perception of a plausible additive mechanistic effect of 5ASA + CS were positively associated with the decision to continue 5ASA with CS. CONCLUSION Despite the absence of data supporting its benefit, most gastroenterologists endorse combination of 5ASA + CS for patients with active moderate-to-severe UC. Randomized controlled trials are needed to assess if 5ASA confer any benefit for these patients.Shomron Ben-Horin Jane M Andrews Konstantinos H Katsanos Florian Rieder Flavio Steinwurz Konstantinos Karmiris Jae Hee Cheon Gordon William Moran Monica Cesarini Christian D Stone Doron Schwartz Marijana Protic Xavier Roblin Giulia Roda Min-Hu Chen Ofir Har-Noy Charles N Bernstein 2017World Journal of Gastroenterology2017,23,16:3
10Reducing anastomotic leak in colorectal surgery: The old dogmas and the new challenges显示文摘Anastomotic leak(AL)constitutes a significant issue in colorectal surgery,and its incidence has remained stable over the last years.The use of intra-abdominal drain or the use of mechanical bowel preparation alone have been proven to be useless in preventing AL and should be abandoned.The role or oral antibiotics preparation regimens should be clarified and compared to other routes of administration,such as the intravenous route or enema.In parallel,preoperative antibiotherapy should aim at targeting collagenase-inducing pathogens,as identified by the microbiome analysis.AL can be further reduced by fluorescence angiography,which leads to significant intraoperative changes in surgical strategies.Implementation of fluorescence angiography should be encouraged.Progress made in AL comprehension and prevention might probably allow reducing the rate of diverting stoma and conduct to a revision of its indications.Jeremy Meyer Surennaidoo Naiken Niki Christou Emilie Liot Christian Toso Nicolas Christian Buchs Frédéric Ris 2019World Journal of Gastroenterology2019,25,34:3
11Reversed-phase fused-core HPLC modeling of peptides显示文摘Different fused-core stationary phase chemistries(C18,Amide,Phenyl-hexyl and Peptide ES-C18) were used for the analysis of 21 structurally representative model peptides.In addition,the effects of the mobile phase composition(ACN or MeOH as organic modifier;formic acid or acetic acid,as acidifying component) on the column selectivity,peak shape and overall chromatographic performance were evaluated.The RP-amide column,combined with a formic acid-acetonitrile based gradient system,performed as best.A peptide reversed-phase retention model is proposed,consisting of 5 variables:log SumAA,log Sv,clog P,log nHDon and log nHAcc.Quantitative structure-retention relationship(QSRR) models were constructed for 16 different chromatographic systems.The accuracy of this peptide retention model was demonstrated by the comparison between predicted and experimentally obtained retention times,explaining on average 86% of the variability.Moreover,using an external set of 5 validation peptides,the predictive power of the model was also demonstrated.This peptide retention model includes the novel in-silico calculated amino acid descriptor,AA,which was calculated from log P,3D-MoRSE,RDF and WHIM descriptors.Matthias D'Hondt Bert Gevaert Sofie Stalmans Sylvia Van Dorpe Evelien Wynendaele Kathelijne Peremans Christian Burvenich Bart De Spiegeleer 2013Journal of Pharmaceutical Analysis2013,3,2:3
12Epidermal Patterning Genes Impose Non‐cell Autonomous Cell Size Determination and have Additional Roles in Root Meristem Size Control显示文摘The regulation of cellular growth is of vital importance for embryonic and postembryonic patterning.Growth regulation in the epidermis has importance for organ growth rates in roots and shoots,proposing epidermal cells as an interesting model for cellular growth regulation.Here we assessed whether the root epidermis is a suitable model system to address cell size determination.In Arabidopsis thaliana L.,root epidermal cells are regularly spaced in neighbouring tricho‐(root hair)and atrichoblast(non‐hair)cells,showing already distinct cell size regulation in the root meristem.We determined cell sizes in the root meristem and at the onset of cellular elongation,revealing that not only division rates but also cellular shape is distinct in tricho‐and atrichoblasts.Intriguingly,epidermal‐patterning mutants,failing to defne differential vacuolization in neighbouring epidermal cell fles,also display non‐differential growth.Using these epidermal‐patterning mutants,we show that polarized growth behaviour of epidermal tricho‐and atrichoblast is interdependent,suggesting non‐cell autonomous signals to integrate tissue expansion.Besides the interweaved cell‐type‐dependent growth mechanism,we reveal an additional role for epidermal patterning genes in root meristem size and organ growth regulation.We conclude that epidermal cells represent a suitable model system to study cell size determination and interdependent tissue growth.Christian Lfke Kai Dünser Jürgen Kleine‐Vehn 2013Journal of Integrative Plant Biology2013,55,9:3
13Multiband emission from single β-NaYF_(4)(Yb,Er) nanoparticles at high excitation power densities and comparison to ensemble studies显示文摘Ensemble and single particle studies of the excitation power density (P)-dependent upconversion luminescence (UCL) of core and core-shell β-NaYF_(4):Yb,Er upconversion nanoparticles (UCNPs) doped with 20% Yb^(3+) and 1% or 3% Er^(^(3+)) performed over a P regime of 6 orders of magnitude reveal an increasing contribution of the emission from high energy Er^(3+) levels at P > 1 kW/cm^(2). This changes the overall emission color from initially green over yellow to white. While initially the green and with increasing P the red emission dominate in ensemble measurements at P < 1 kW/cm^(2), the increasing population of higher Er^(^(3+)) energy levels by multiphotonic processes at higher P in single particle studies results in a multitude of emission bands in the ultraviolet/visible/near infrared (UV/vis/NIR) accompanied by a decreased contribution of the red luminescence. Based upon a thorough analysis of the P-dependence of UCL, the emission bands activated at high P were grouped and assigned to 2–3, 3–4, and 4 photonic processes involving energy transfer (ET), excited-state absorption (ESA), cross-relaxation (CR), back energy transfer (BET), and non-radiative relaxation processes (nRP). This underlines the P-tunability of UCNP brightness and color and highlights the potential of P-dependent measurements for mechanistic studies required to manifest the population pathways of the different Er^(3+) levels.Florian Frenzel Christian Würth Oleksii Dukhno Frédéric Przybilla Lisa MWiesholler Verena Muhr Thomas Hirsch Yves Mély Ute Resch-Genger 2021Nano Research2021,14,11:3
14European Consensus Guidelines on the Management of Neonatal Respiratory Distress Syndrome in Preterm Infants - 2013 Update显示文摘Sweet David G Carnielli Virgilio Greisen Gorm Hallman Mikko Ozek Eren Plavka Richard Saugstad Ola D Simeoni Umberto Speer Christian P Vento Maximo Halliday Henry L 2013Neonatology2013,,4:3
15Serous pancreatic neoplasia, data and review显示文摘AIM To describe the imaging features of serous neoplasms of the pancreas using ultrasound, endoscopic ultrasound, computed tomography and magnetic resonance imaging.METHODS This multicenter international collaboration enhances a literature review to date, reporting features of 287 histologically confirmed cases of serous pancreatic cystic neoplasms(SPN). RESULTS Female predominance is seen with most SPN presenting asymptomatically in the 5th through 7th decade. Mean lesion size was 38.7 mm, 98% were single, 44.2% cystic, 46% mixed cystic and solid, and 94% hypoechoic on B-mode ultrasound. Vascular patterns and contrast-enhancement profiles are described as hypervascular and hyperenhancing.CONCLUSION The described ultrasound features can aid differentiation of SPN from other neoplastic lesions under most circumstances.Christoph F Dietrich Yi Dong Christian Jenssen Valentina Ciaravino Michael Hocke Wen-Ping Wang Eike Burmester Kathleen Moeller Nathan SS Atkinson Paola Capelli Mirko D’Onofrio 2017World Journal of Gastroenterology2017,23,30:3
16Lack of correlation between Treg quantification assays in inflammatory bowel disease patients显示文摘AIM:To compare the number of regulatory T-cells( Tregs) measured by flow cytometry with those obtained using a real-time quantitative PCR(q PCR) method in patients suffering from inflammatory bowel disease(IBD).METHODS:Tregs percentages obtained by both flow cytometry and q PCR methods in 35 adult IBD patients,18 out of them with Crohn′s disease(CD)and 17 with ulcerative colitis(UC)were compared to each other as well as to scores on two IBD activity questionnaires using the Harvey Bradshaw Index(HBI)for CD patients and the Simple Colitis Clinical Activity Index(SCCAI)for UC patients.The Treg percentages by flow cytometry were defined as CD4+CD25highCD127lowFOXP3+cells in peripheral blood mononuclear cells,whereas the Treg percentages by q PCR method were determined as FOXP3 promoter demethylation in genomic DNA.RESULTS:We found an average of 1.56%±0.78%Tregs by using flow cytometry,compared to 1.07%±0.53%Tregs by using q PCR in adult IBD patients.There were no significant correlations between either the percentages of Tregs measured by flow cytometry or q PCR and the HBI or SCCAI questionnaire scores in CD or UC patients,respectively.In addition,there was no correlation between Treg percentages measured by q PCR and those measured by flow cytometry(r=-0.06,P=0.73;Spearman Rho).These data suggest that,either Treg-related immune function or the clinical scores in these IBD patients did not accurately reflect actual disease activity.Until the cause(s)for these differences are more clearly defined,the resultssuggest caution in interpreting studies of Tregs in various inflammatory disorders.CONCLUSION:The two methods did not produce equivalent measures of the percentage of total Tregs in the IBD patients studied which is consistent with the conclusion that Tregs subtypes are not equally detected by these two assays.Gunnar Brandhorst Darinka Todorova Petrova Sebastian Weigand Christoph Eberle Nicolas von Ahsen Jessica Schmitz Frank Christian Schultze Dirk Raddatz Michael Karaus Michael Oellerich Philip D Walson 2015World Journal of Gastroenterology2015,21,11:2
17Serotonin type 3 receptor subunit gene polymorphisms associated with psychosomatic symptoms in irritable bowel syndrome:A multicenter retrospective study显示文摘BACKGROUND Single-nucleotide polymorphisms(SNPs)of the serotonin type 3 receptor subunit(HTR3)genes have been associated with psychosomatic symptoms,but it is not clear whether these associations exist in irritable bowel syndrome(IBS).AIM To assess the association of HTR3 polymorphisms with depressive,anxiety,and somatization symptoms in individuals with IBS.METHODS In this retrospective study,623 participants with IBS were recruited from five specialty centers in Germany,Sweden,the United States,the United Kingdom,and Ireland.Depressive,anxiety,and somatization symptoms and sociodemographic characteristics were collected.Four functional SNPs—HTR3A c.-42C>T,HTR3B c.386A>C,HTR3C c.489C>A,and HTR3E c.*76G>A—were genotyped and analyzed using the dominant and recessive models.We also performed separate analyses for sex and IBS subtypes.SNP scores were calculated as the number of minor alleles of the SNPs above.The impact of HTR3C c.489C>A was tested by radioligand-binding and calcium influx assays.RESULTS Depressive and anxiety symptoms significantly worsened with increasing numbers of minor HTR3C c.489C>A alleles in the dominant model(F_(depressive)=7.475,P_(depressive)=0.006;F_(anxiety)=6.535,P_(anxiety)=0.011).A higher SNP score(range 0-6)was linked to a worsened depressive symptoms score(F=7.710,P-linear trend=0.006)in IBS.The potential relevance of the HTR3C SNP was corroborated,showing changes in the expression level of 5-HT3AC variant receptors.CONCLUSION We have provided the first evidence that HTR3C c.489C>A is involved in depressive and anxiety symptoms in individuals with IBS.The SNP score indicated that an increasing number of minor alleles is linked to the worsening of depressive symptoms in IBS.Sabrina Berens Yuanjun Dong Nikola Fritz Jutta Walstab Mauro D'Amato Tenghao Zheng Verena Wahl Felix Boekstegers Justo Lorenzo Bermejo Cristina Martinez Stefanie Schmitteckert Egbert Clevers Felicitas Engel Annika Gauss Wolfgang Herzog Robin Spiller Miriam Goebel-Stengel Hubert Mönnikes Viola Andresen Frieling Thomas Jutta Keller Christian Pehl Christoph Stein-Thöringer Gerard Clarke Timothy G Dinan Eamonn M Quigley Gregory Sayuk Magnus Simrén Jonas Tesarz Gudrun Rappold Lukas van Oudenhove Rainer Schaefert Beate Niesler 2022World Journal of Gastroenterology2022,28,21:2
18Tetralogy of Fallot显示文摘Christian Apitz Gary D Webb Andrew N Redington 20092009 (9699)2009,,9699:2
19A vital sugar code for ricin toxicity显示文摘Jasmin Taubenschmld Johannes Stadlmann Markus Jost Tove Irene Klok.k Cory D Rillahan Andreas Leibbrandt Karl Mechtler James C Paulson Julian Jude Johannes Zuber Kirsten Sandvig Ulrich Elling Thorsten Marquardt Christian Thiel Christian Koerner Josef M Penninger 2017Cell Research2017,27,11:2
20Outcomes of the Bowel Cancer Screening Programme (BCSP) in England after the first 1 million tests显示文摘Richard F A Logan Julietta Patnick Claire Nickerson Lynn Coleman Matt D Rutter Christian von Wagner 2012Gut2012,,10:2
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