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131篇 您的检索式:作者名="Neurath F"
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1Molecular mechanism of action of anti-tumor necrosis factor antibodies in inflammatory bowel diseases显示文摘Anti-tumor necrosis factor(TNF) antibodies are successfully used in the therapy of inflammatory bowel diseases(IBD). However, the molecular mechanism of action of these agents is still a matter of debate. Apart from neutralization of TNF, influence on the intestinal barrier function, induction of apoptosis in mucosal immune cells, formation of regulatory macrophages as well as other immune modulating properties have been discussed as central features. Nevertheless, clinically effective anti-TNF antibodies were shown to differ in their mode-of-action in vivo and in vitro. Furthermore, the anti-TNF agent etanercept is effective in the treatment of rheumatoid arthritis but failed to induce clinical response in Crohn's disease patients, suggesting different contributions of TNF in the pathogenesis of these inflammatory diseases. In the following, we will review different aspects regarding the mechanism of action of anti-TNF agents in general and analyze comparatively different effects of each antiTNF agent such as TNF neutralization, modulation of the immune system, reverse signaling and induction of apoptosis. We discuss the relevance of the membranebound form of TNF compared to the soluble form for the immunopathogenesis of IBD. Furthermore, we review reports that could lead to personalized medicine approaches regarding treatment with antiTNF antibodies in chronic intestinal inflammation, by predicting response to therapy.Ulrike Billmeier Walburga Dieterich Markus F Neurath Raja Atreya 2016World Journal of Gastroenterology2016,22,42:19
2Colon cancer and the immune system:The role of tumor invading T cells显示文摘Colon cancer is still one of the leading causes of cancer death worldwide. Although the host immune system has been shown to react against tumor cells, mainly through tumor infi ltrating lymphocytes and NK cells, tumor cells may utilize different ways to escape anti-tumor immune response. Tumor infi ltration of CD8+ and CD4+ (T-bet+) effector T cells has been attributed to a beneficial outcome, and the enhancement of T cell activation through T cell receptor stimulation and co-stimulatory signals provides promising strategies for immunotherapy of colon cancer. Growing evidence supports a role for the Fas/FasL system in tumor immunology, although the mechanisms and consequences of FasL activation in colon cancer are not completely understood. In animal models, depletion of regulatory T cells (CD4+ CD25+ T cells) can enhance the anti-tumor immune response under certain conditions. Taken together, recent insights in the immune reaction against colon carcinoma have provided new approaches to immunotherapy, although much remains to be learned about the exact mechanisms.Maximilian Waldner Carl C Schimanski Markus F Neurath 2006World Journal of Gastroenterology2006,12,45:15
3Differential diagnosis in inflammatory bowel disease colitis:State of the art and future perspectives显示文摘Distinction between Crohn's disease of the colonrectum and ulcerative colitis or inflammatory bowel disease(IBD) type unclassified can be of pivotal importance for a tailored clinical management,as each entity often involves specific therapeutic strategies and prognosis.Nonetheless,no gold standard is available and the uncertainty of diagnosis may frequently lead to misclassification or repeated examinations.Hence,we have performed a literature search to address the problem of differential diagnosis in IBD colitis,revised current and emerging diagnostic tools and refined disease classification strategies.Nowadays,the differential diagnosis is an untangled issue,and the proper diagnosis cannot be reached in up to 10% of patients presenting with IBD colitis.This topic is receiving emerging attention,as medical therapies,surgical approaches and leading prognostic outcomes require more and more disease-specific strategies in IBD patients.The optimization of standard diagnostic approaches based on clinical features,biomarkers,radiology,endoscopy and histopathology appears to provide only marginal benefits.Conversely,emerging diagnostic techniques in the field of gastrointestinal endoscopy,molecular pathology,genetics,epigenetics,metabolomics and proteomics have already shown promising results.Novel advanced endoscopic imaging techniques and biomarkers can shed new light for the differential diagnosis of IBD,better reflecting diverse disease behaviors based on specific pathogenic pathways.Gian Eugenio Tontini Maurizio Vecchi Luca Pastorelli Markus F Neurath Helmut Neumann 2015World Journal of Gastroenterology2015,21,1:13
4Double-balloon-enteroscopy-based endoscopic retrograde cholangiopancreatography in post-surgical patients显示文摘AIM: To evaluate double balloon enteroscopy (DBE) in post-surgical patients to perform endoscopic retrograde cholangiopancreatography (ERCP) and interventions. METHODS: In 37 post-surgical patients, a stepwise approach was performed to reach normal papilla or enteral anastomoses of the biliary tract/pancreas. When conventional endoscopy failed, DBE-based ERCP was performed and standard parameters for DBE, ERCP and interventions were recorded. RESULTS: Push-enteroscopy (overall, 16 procedures) reached enteral anastomoses only in six out of 37 post-surgical patients (16.2%). DBE achieved a high rate of luminal access to the biliary tract in 23 of the remaining 31 patients (74.1%) and to the pancreatic duct (three patients). Among all DBE-based ERCPs (86 procedures), 21/23 patients (91.3%) were successfully treated. Interventions included ostium incision or papillotomy in 6/23 (26%) and 7/23 patients (30.4%), respectively. Biliary endoprosthesis insertion and regular exchange was achieved in 17/23 (73.9%) and 7/23 patients (30.4%), respectively. Furthermore, bile duct stone extraction as well as ostium and papillary dilation were performed in 5/23 (21.7%) and 3/23 patients (13.0%), respectively. Complications during DBE-based procedures were bleeding (1.1%), perforation (2.3%) and pancreatitis (2.3%), and minor complications occurred in up to 19.1%. CONCLUSION: The appropriate use of DBE yields a high rate of luminal access to papilla or enteral anastomoses in more than two-thirds of post-surgical patients, allowing important successful endoscopic therapeutic interventions.Martin Raithel Harald Dormann Andreas Naegel Frank Boxberger Eckhart G Hahn Markus F Neurath Juergen Maiss 2011World Journal of Gastroenterology2011,17,18:9
5Advances in hepatitis C therapy: What is the current state-what come's next?显示文摘Chronic hepatitis C virus(HCV) infection affects 80-160 million people worldwide and is one of the leading causes of chronic liver disease.It is only a few years ago that standard treatment regimes were based on pegylated interferon alpha and ribavirin.However,treatment of HCV has undergone a revolutionary change in recent years.The admission of the nucleotide polymerase inhibitor Sofosbuvir enabled an interferon-free regimen with direct antiviral agents(DAA).Meanwhile seven DAAs are available and can be applied in several combinations for 8 to 24 wk depending on HCV genotype and patient characteristics such as cirrhosis and chronic renal failure.High rates of sustained virological response(SVR) rates can be achieved with these novel drugs.Even in difficult to treat populations such as patients with liver cirrhosis,HCV-human immunodeficiency virus co-infections,after liver transplantion,or with chronic kidney disease comparable high rates of SVR can be achieved.The anticipated 2nd generation DAAs are strikingly effective in patients so far classified as difficult to treat including decompensated liver cirrhosis or posttransplant patients.These 2nd generations DAAs will have higher resistance barriers,higher antiviral effects and a pan-genotypic spectrum.This review highlights the current state of the art of antiviral treatment in hepatitis Cand gives an outlook for upcoming therapies.Steffen Zopf Andreas E Kremer Markus F Neurath Juergen Siebler 2016World Journal of Hepatology2016,8,3:7
6Cancer risk in IBD: How to diagnose and how to manage DALM and ALM显示文摘The risk of developing neoplasia leading to colorectal cancer is significantly increased in ulcerative colitis (UC) and most likely in Crohn's disease. Several endoscopic surveillance strategies have been implemented to identify these lesions. The main issue is that colitisassociated neoplasms often occurs in flat mucosa, often being detected on taking random biopsies rather than by identification of these lesions via endoscopic imaging. The standard diagnostic procedure in long lasting UC is to take four biopsies every 10 cm. Image enhancement methods, such as chromoendoscopy and virtual histology using endomicroscopy, have greatly im- proved neoplasia detection rates and may contribute toreduced random biopsies by taking targeted 'smart' biopsies. Chromoendoscopy may effectively be performed by experienced endoscopists for routine screening of UC patients. By contrast, endomicroscopy is often only available in selected specialized endoscopic centers. Importantly, advanced endoscopic imaging has the poten- tial to increase the detection rate of neoplasia whereas the interplay between endoscopic experience and interpretation of histological biopsy evaluation allows the physician to make a proper diagnosis and to find the appropriate therapeutic approach. Colitis-associated intraepithelial neoplasms may occur in flat mucosa of endoscopically normal appearance or may arise as dysplasia-associated lesion or mass (DALM), which may be indistinguishable from sporadic adenomas in healthy or non-colitis mucosa [adenoma-like mass (ALM)]. The aim of this review was to summarize endoscopic and histological characteristics of DALM and ALM in the context of therapeutic procedures.Helmut Neumann Michael Vieth Cord Langner Markus F Neurath Jonas Mudter 2011World Journal of Gastroenterology2011,17,27:6
7In vivo subsurface morphological and functional cellular and subcellular imaging of the gastrointestinal tract with confocal mini-microscopy显示文摘瞄准:为在活体内评估一根最新发达的手持的共焦的探针在啮齿类动物的完全的胃肠道的显微镜的成像。方法:一根新奇僵硬共焦的探针(直径 7 公里) 为 fluorophore 刺激用 488 nm 单身者线激光在人为使用与类似于灵活 endomicroscopy 系统的光特征被设计。轻排放在 505 ~ 750 nm 被检测。看法的地多样地是 475 妈妈 475 妈妈。光片厚度是有 0.7 妈妈的侧面的分辨率的 7 妈妈。在不同深度(到 250 妈妈的表面) 的表面下的连续图象多样地在 1024 点在实时被产生由在轻轻的、稳定的接触把探查放到织物上的 1024 个象素(0.8 frames/s ) 。织物标本为组织病理学说的关联被取样。结果:食管,胃,小并且大肠和中央,肝,胰和胆囊是在在 n = 的高分辨率的视觉 ised 在活体内 48 个鼠标。有共焦的微型显微镜学探查的实时显微镜的成像是容易的完成。不同染色协议(荧光黄,吖啶黄,标记 FITC 的葡聚糖和 L。可食用嗯植物凝血素) 织物的每个加亮的特定的方面,和在活体内成像与常规组织学最优地相关。在活体内血流监视把功能的质量加到词法成像。结论:共焦的显微镜学是在甚至表面下的织物结构的高分辨率允许完全的官方补给的道的可视化的可行在活体内。在这研究评估的新共焦的探查设计与腹腔镜检查兼容并且显著地扩展可能的应用的地到 intra 腹的机关。它允许新在活体内染色和申请选择的立即的测试因此在病人从动物研究允许快速的转移到临床的使用。Martin Goetz Beena Memadathil Stefan Biesterfeld Constantin Schneider Sebastian Gregor Peter R Galle Markus F Neurath Ralf Kiesslich 2007World Journal of Gastroenterology2007,13,15:6
8New endoscopic approaches in IBD显示文摘Recent advances in endoscopic imaging techniques have revolutionized the diagnostic approach of patients with inflammatory bowel disease(IBD).New,emerging endoscopic imaging techniques visualized a plethora of new mucosal details even at the cellular and subcellular level.This review offers an overview about new endoscopic techniques,including chromoendoscopy,magnification endoscopy,spectroscopy,confocal laser endomicroscopy and endocytoscopy in the face of IBD.Helmut Neumann Markus F Neurath Jonas Mudter 2011World Journal of Gastroenterology2011,17,1:6
9First case report of exacerbated ulcerative colitis after anti-interleukin-6R salvage therapy显示文摘We present the case of a 53-year-old woman with long-standing ulcerative colitis and severe, steroid-dependent disease course unresponsive to treatment with azathioprine, methotrexate, anti-TNF antibodies(infliximab, adalimumab) and tacrolimus, who refused colectomy as a therapeutic option. As the pro-inflammatory cytokine interleukin-6(IL-6) had been identified as a crucial regulator in the immunopathogenesis of inflammatory bowel diseases, we treated the patient with biweekly intravenous infusions of an anti-IL-6R antibody(tocilizumab) for 12 wk. However, no clinical improvement of disease activity was noted. In fact, endoscopic, histological and endomicroscopic assessment demonstrated exacerbation of mucosal inflammation and ulcer formation upon anti-IL-6R therapy. Mechanistic studies revealed that tocilizumab treatment failed to suppress intestinal IL-6 production, impaired epithelial barrier function and induced production of pro-inflammatory cytokines such as TNF, IL-21 and IFN-γ. Inhibition of IL-6 by tocilizumab had no clinical benefit in this patient with intractable ulcerative colitis and even led to exacerbation of mucosal inflammation. Our findings suggest that anti-IL-6R antibody therapy may leadto aggravation of anti-TNF resistant ulcerative colitis. When targeting IL-6, the differential responsiveness of target cells has to be taken into account, as IL-6 on the one side promotes acute and chronic mucosal inflammation via soluble IL-6R signaling but on the other side also strongly contributes to epithelial cell survival via membrane bound IL-6R signaling.Raja Atreya Ulrike Billmeier Timo Rath Jonas Mudter Michael Vieth Helmut Neumann Markus F Neurath 2015World Journal of Gastroenterology2015,21,45:5
10Comparison of Hemospray~? and Endoclot? for the treatment of gastrointestinal bleeding显示文摘BACKGROUND Gastrointestinal(GI) bleeding is a common indication for endoscopy. For refractory cases, hemostatic powders(HP) represent 'touch-free' agents.AIM To analyze short term(ST-within 72 h-) and long-term(LT-within 30 d-) success for achieving hemostasis with HP and to directly compare the two agents Hemospray(HS) and Endoclot(EC).METHODS HP was applied in 154 consecutive patients(mean age 67 years) with GI bleeding.Patients were followed up for 1 mo(mean follow-up: 3.2 mo).RESULTS Majority of applications were in upper GI tract(89%) with following bleeding sources: peptic ulcer disease(35%), esophageal varices(7%), tumor bleeding(11.7%), reflux esophagitis(8.7%), diffuse bleeding and erosions(15.3%). Overall ST success was achieved in 125 patients(81%) and LT success in 81 patients(67%). Re-bleeding occurred in 27% of all patients. In 72 patients(47%), HP was applied as a salvage hemostatic therapy, here ST and LT success were 81% and64%, with re-bleeding in 32%. As a primary hemostatic therapy, ST and LT success were 82% and 69%, with re-bleeding occurring in 22%. HS was more frequently applied for upper GI bleeding(P = 0.04)CONCLUSION Both HP allow for effective hemostasis with no differences in ST, LT success and re-bleeding.Francesco Vitali Andreas Naegel Raja Atreya Steffen Zopf Clemens Neufert Juergen Siebler Markus F Neurath Timo Rath 2019World Journal of Gastroenterology2019,25,13:2
11Hypoxia stimulates breast eareinoma cell invasion through MT1 MMP and MMP2 activation 显示文摘Munoz NajarUM Neurath KM Vumbaea F 2006Oneogene2006,25,16:1
12Mongersen, an oral SMAD7 antisense oligonucleotide, and Crohn's disease显示文摘MONTELEONE G NEURATH M F ARDIZZONE S 2015N Engl J Med2015,372,12:1
13显示文摘Finotto S Markus F Neurath MF 2002Science2002,295,:1
14Hypoxia stimulates breast carcinoma cell invasion through MT1-MMP and MMP-2 activation显示文摘Mu oz-Najar UM Neurath KM Vumbaca F 2006Oncogene2006,25,16:1
15Immunotherapy of inflammatory bowel disease: current concepts and future perspectives显示文摘NEURATH M F 2000Arch Immmunol Ther Exp(Warsz)2000,48,2:1
16NF-kappaB in inflammatory bowel disease显示文摘Atreya I Atreya R Neurath M F 2008J Intern Med2008,263,6:1
17IL-6 signaling in autoimmunity,chronic inflammation and inflammation-associated cancer显示文摘Neurath M F Finotto S 2011Cytokine Growth Factor Rev2011,22,2:1
18Antibodies to interleukin 12 abrogate established exPerimental colitis in mice显示文摘Neurath M F Fuss I Kelsall B L 1995J ExP Med1995,182,5:1
19Intrasynovial orgoteintherapy in rheumatoid arthritis显示文摘Goebel KM Storck U Neurath F 1981Lancet1981,1,8228:1
20IL-6 signaling in autoimmunity,chronic inflammation and inflammation-associated cancer显示文摘Neurath M F Finotto S 0,,02:1
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