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630篇 您的检索式:作者名="Markus J"
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1Systemic inflammation in colorectal cancer: Underlying factors,effects, and prognostic significance显示文摘Systemic inflammation is a marker of poor prognosis preoperatively present in around 20%-40%of colorectal cancer patients.The hallmarks of systemic inflammation include an increased production of proinflammatory cytokines and acute phase proteins that enter the circulation.While the low-level systemic inflammation is often clinically silent,its consequences are many and may ultimately lead to chronic cancer-associated wasting,cachexia.In this review,we discuss the pathogenesis of cancer-related systemic inflammation,explore the role of systemic inflammation in promoting cancer growth,escaping antitumor defense,and shifting metabolic pathways,and how these changes are related to less favorable outcome.Anne E Tuomisto Markus J Makinen Juha P Vayrynen 2019World Journal of Gastroenterology2019,25,31:27
2On the combined effect of soil fertility and topography on tree growth in subtropical forest ecosystems—a study from SE China显示文摘Aims The aim of our research was to understand small-scale effects of topography and soil fertility on tree growth in a forest biodiversity and ecosystem functioning(BEF)experiment in subtropical SE China.Methods Geomorphometric terrain analyses were carried out at a spatial resolution of 5×5 m.Soil samples of different depth increments and data on tree height were collected from a total of 566 plots(667 m2 each).The soils were analyzed for carbon(soil organic carbon[SOC]),nitrogen,acidity,cation exchange capacity(CEC),exchangeable cations and base saturation as soil fertility attributes.All plots were classified into geomorphological units.Analyses of variance and linear regressions were applied to all terrain,soil fertility and tree growth attributes.Important Findings In general,young and shallow soils and relatively small differences in stable soil properties suggest that soil erosion has truncated the soils to a large extent over the whole area of the experiment.This explains the concurrently increasing CEC and SOC stocks downslope,in hollows and in valleys.However,colluvial,carbon-rich sediments are missing widely due to the convexity of the footslopes caused by uplift and removal of eroded sediments by adjacent waterways.The results showed that soil fertility is mainly influenced by topography.Monte-Carlo flow accumulation(MCCA),curvature,slope and aspect significantly affected soil fertility.Furthermore,soil fertility was affected by the different geomorphological positions on the experimental sites with ridge and spur positions showing lower exchangeable base cation contents,especially potassium(K),due to leaching.This geomorphological effect of soil fertility is most pronounced in the topsoil and decreases when considering the subsoil down to 50 cm depth.Few soil fertility attributes affect tree height after 1-2 years of growth,among which C stocks proved to be most important while pH_(KCl)and CEC only played minor roles.Nevertheless,soil acidity and a high proportion of Al on the exchange complex affected tree height even after only 1-2 years growth.Hence,our study showed that forest nutrition is coupled to a recycling of litter nutrients,and does not only depend on subsequent supply of nutrients from the mineral soil.Besides soil fertility,topography affected tree height.We found that especially MCCA as indicator of water availability affected tree growth at small-scale,as well as aspect.Overall,our synthesis on the interrelation between fertility,topography and tree growth in a subtropical forest ecosystem in SE China showed that topographic heterogeneity lead to ecological gradients across geomorphological positions.In this respect,small-scale soil-plant interactions in a young forest can serve as a driver for the future development of vegetation and biodiversity control on soil fertility.In addition,it shows that terrain attributes should be accounted for in ecological research.Thomas Scholten Philipp Goebes Peter Kühn Steffen Seitz Thorsten Assmann Jürgen Bauhus Helge Bruelheide Francois Buscot Alexandra Erfmeier Markus Fischer Werner Härdtle Jin-Sheng He Keping Ma Pascal A.Niklaus Michael Scherer-Lorenzen Bernhard Schmid Xuezheng Shi Zhengshan Song Goddert von Oheimb Christian Wirth Tesfaye Wubet Karsten Schmidt 2017Journal of Plant Ecology2017,10,1:22
3Laparoscopic surgery for benign and malign diseases of the digestive system:Indications,limitations,and evidence显示文摘The laparoscopic technique was introduced in gastrointestinal surgery in the mid 1980s.Since then,the development of this technique has been extraordinary.Triggered by technical innovations(stapling devices or coagulation/dissecting devices),nowadays any type of gastrointestinal resection has been successfully performed laparoscopically and can be performed laparoscopically dependent on the patient’s condition.This summary gives an overview over 30 years of laparoscopic surgery with focus on today’s indications and evidence.Main indications remain the more common procedures,e.g.,appendectomy,cholecystectomy,bariatric procedures or colorectal resections.For all these indications,the laparoscopic approach has become the gold standard with less perioperative morbidity.Regarding oncological outcome there have been several highquality randomized controlled trials which demonstrated equivalency between laparoscopic and open colorectal resections.Less common procedures like esophagectomy,oncological gastrectomy,liver and pancreatic resections can be performed successfully as well by anexperienced surgeon.However,the evidence for these special indications is poor and a general recommendation cannot be given.In conclusion,laparoscopic surgery has revolutionized the field of gastrointestinal surgery by reducing perioperative morbidity without disregarding surgical principles especially in oncological surgery.Markus Alexander Küper Friederike Eisner Alfred K?nigsrainer J?rg Glatzle 2014World Journal of Gastroenterology2014,20,17:9
4Divergent expression of bacterial wall sensing toll-like receptors 2 and 4 in colorectal cancer显示文摘AIM To characterize the expression of toll-like receptors(TLR) 2 and 4 in colorectal cancer(CRC) and in normal colorectal mucosa.METHODS We analysed tissue samples from a prospective series of 118 unselected surgically treated patients with CRC. Sections from formalin fixed, paraffin embedded specimens were analysed for TLR2 and TLR4 expression by immunohistochemistry. Two independent assessors evaluated separately expression at the normal mucosa, at the invasive front and the bulk of the carcinoma, and in the lymph node metastases when present. Expression levels in different locations were compared and their associations with clinicopathological features including TNM-stage and the grade of the tumour and 5-year follow-up observations were analysed.RESULTS Normal colorectal epithelium showed a gradient of expression of both TLR2 and TLR4 with low levels in the crypt bases and high levels in the surface. In CRC, expression of both TLRs was present in all cases and in the major proportion of tumour cells. Compared to normal epithelium, TLR4 expression was significantly weaker but TLR2 expression stronger in carcinoma cells. Weak TLR4 expression in the invasive front was associated with distant metastases and worse cancerspecific survival at 5 years. In tumours of the proximal colon the cancer-specific survival at 5 years was 36.9% better with strong TLR4 expression as compared with those with weak expression(P = 0.044). In contrast, TLR2 expression levels were not associated with prognosis. Tumour cells in the lymph node metastases showed higher TLR4 expression and lower TLR2 expression than cells in primary tumours.CONCLUSION Tumour cells in CRC show downregulation of TLR4 and upregulation of TLR2. Low expression of TLR4 in the invasive front predicts poor prognosis and metastatic disease.Karoliina Paarnio Sara Vayrynen Kai Klintrup Pasi Ohtonen Markus J Makinen Jyrki Makela Tuomo J Karttunen 2017World Journal of Gastroenterology2017,23,26:8
5Arterial Resection During Pancreatectomy for Pancreatic Cancer: A Systematic Review and Meta-Analysis显示文摘Nathan Mollberg Nuh N. Rahbari Moritz Koch Werner Hartwig Yumiko Hoeger Markus W. Büchler Jürgen Weitz 2011Annals of Surgery2011,,6:5
6Adiponectin and its receptors in rodent models of fatty liver disease and liver cirrhosis显示文摘AIM: To determine circulating and hepatic adiponectin in rodents with fatty liver disease or liver cirrhosis and investigate expression of the adiponectin receptors AdipoR1 on the mRNA and protein level and AdipoR2 on the mRNA level. METHODS: Fat fed rats were used as a model for fatty liver disease and bile duct ligation in mice to investigate cirrhotic liver. Expression of AdipoR1 and AdipoR2 mRNA was determined by real time RT-PCR. AdipoR1 protein was analysed by immunoblot. Adiponectin was measured by ELISA. RESULTS: Systemic adiponectin is reduced in fat- fed rats but is elevated in mice after bile duct ligation (BDL). Hepatic adiponectin protein is lower in steatotic liver but not in the liver of BDL-mice when compared to controls. Adiponectin mRNA was not detected in human liver samples or primary human hepatocytes nor in rat liver but recombinant adiponectin is taken up by isolated hepatocytes in-vitro. AdipoR1 mRNA and AdipoR1 protein levels are similar in the liver tissue of control and fat fed animals whereas AdipoR2 mRNA is induced. AdipoR2 mRNA and AdipoR1 mRNA and protein is suppressed in the liver of BDL-mice. CONCLUSION: Our studies show reduced circulating adiponectin in a rat model of fatty liver disease whereas circulating adiponectin is elevated in a mouse model of cirrhosis and similar fi ndings have been described in humans. Diminished hepatic expression of adiponectinreceptors was only found in liver cirrhosis.Markus Neumeier Claus Hellerbrand Erwin Gbele Roland Buettner Cornelius Bollheimer Johanna Weigert Andreas Schffler Thomas S Weiss Monika Lichtenauer Jürgen Schlmerich Christa Buechler 2006World Journal of Gastroenterology2006,12,34:4
7Loss of the vitamin D receptor in human breast and prostate cancers strongly induces cell apoptosis through downregulation of Wnt/β-catenin signaling显示文摘Vitamin D co-regulates cell proliferation, differentiation and apoptosis in numerous tissues, including cancers. The known anti-proliferative and pro-apoptotic actions of the active metabolite of vitamin D,1,25-dihydroxy-vitamin D [1,25(OH)2 D] are mediated through binding to the vitamin D receptor(VDR). Here,we report on the unexpected finding that stable knockdown of VDR expression in the human breast and prostate cancer cell lines, MDA-MB-231 and PC3, strongly induces cell apoptosis and inhibits cell proliferation in vitro. Implantation of these VDR knockdown cells into the mammary fat pad(MDA-MB-231),subcutaneously(PC3) or intra-tibially(both cell lines) in immune-incompetent nude mice resulted in reduced tumor growth associated with increased apoptosis and reduced cell proliferation compared with controls.These growth-retarding effects of VDR knockdown occur in the presence and absence of vitamin D and are independent of whether cells were grown in bone or soft tissues. Transcriptome analysis of VDR knockdown and non-target control cell lines demonstrated that loss of the VDR was associated with significant attenuation in the Wnt/β-catenin signaling pathway. In particular, cytoplasmic and nuclear β-catenin protein levels were reduced with a corresponding downregulation of downstream genes such as Axin2, Cyclin D1,interleukin-6(IL-6), and IL-8. Stabilization of β-catenin using the GSK-3β inhibitor BIO partly reversed the growth-retarding effects of VDR knockdown. Our results indicate that the unliganded VDR possesses hitherto unknown functions to promote breast and prostate cancer growth, which appear to be operational not only within but also outside the bone environment. These novel functions contrast with the known anti-proliferative nuclear actions of the liganded VDR and may represent targets for new diagnostic and therapeutic approaches in breast and prostate cancer.Yu Zheng Trupti Trivedi Ruby CY Lin Colette Fong-Yee Rick Nolte Jeline Manibo Yunzhao Chen Musharraf Hossain Konstantin Horas Colin Dunstan Hong Zhou Markus J Seibel 2017Bone Research2017,5,3:4
8Surgical approaches for resection of pancreatic cancer: an overview显示文摘Objective: To overview the different surgical approach-es for the resection of pancreatic cancer and our expe-rience with these techniques.Methods: Surgical procedures including the Whipple re-section, pylorus-preserving resection, total and subto-tal panreatectomies, regional pancreatectomy and theextended lymph node resection were discussed.Results: Studies have shown that no operation seems toproduce significantly improved results in terms of sur-vival, mortality and resection rates compared to thestandard Whipple resection and pylorus-preservingduodenopancreatectomy.Conclusion: Despite the progress in the surgical treat-ment of pancreatic cancer, the overall prognosis afterresection remains unsatisfied. Surgery is likely to beoptional for the treatment of pancreatic cancer.Helmut Friess Jrg Kleeff Markus W Buchler 2002Hepatobiliary & Pancreatic Diseases International2002,1,1:3
9A comparative risk assessment of burden of disease and injury attributable to 67 risk factors and risk factor clusters in 21 regions, 1990–2010: a systematic analysis for the Global Burden of Disease Study 2010显示文摘Stephen S Lim Theo Vos Abraham D Flaxman Goodarz Danaei Kenji Shibuya Heather Adair-Rohani Mohammad A AlMazroa Markus Amann H Ross Anderson Kathryn G Andrews Martin Aryee Charles Atkinson Loraine J Bacchus Adil N Bahalim Kalpana Balakrishnan John Balmes S 20122012 (9859)2012,,9859:3
10Influence of experimental soil disturbances on the diversity of plants in agricultural grasslands显示文摘Aims and Methods Disturbance is supposed to play an important role for biodiversity and ecosystem stability as described by the intermediate disturbance hypoth-esis(IDH),which predicts highest species richness at intermediate levels of disturbances.In this study,we tested the effects of artificial soil distur-bances on diversity of annual and perennial vascular plants and bryo-phytes in a field experiment in 86 agricultural grasslands differing in land use in two regions of Germany.On each grassland,we implemented four treatments:three treatments differing in application time of soil dis-turbances and one control.One year after experimental disturbance,we recorded vegetation and measured biomass productivity and bare ground.We analysed the disturbance response taking effects of region and land-use-accompanied disturbance regimes into account.Important Findings Region and land-use type strongly determined plant species rich-ness.Experimental disturbances had small positive effects on the species richness of annuals,but none on perennials or bryophytes.Bare ground was positively related to species richness of bryophytes.However,exceeding the creation of 12%bare ground further distur-bance had a detrimental effect on bryophyte species richness,which corresponds to the IDH.As biomass productivity was unaffected by disturbance our results indicate that the disturbance effect on spe-cies richness of annuals was not due to decreased overall produc-tivity,but rather due to short-term lowered inter-and intraspecific competition at the newly created microsites.Generally,our results highlight the importance of soil disturbances for species richness of annual plants and bryophytes in agricultural grasslands.However,most grasslands were disturbed naturally or by land-use practices and our additional experimental soil dis-turbances only had a small short-term effect.Overall,total plant diversity in grasslands seemed to be more limited by the availabil-ity of propagules rather than by suitable microsites for germination.Thus,nature conservation efforts to increase grassland diversity should focus on overcoming propagule limitation,for instance by additional sowing of seeds,while the creation of additional open patches by disturbance might only be appropriate where natural disturbances are scarce.Jörg Müller Johannes Heinze Jasmin Joshi Steffen Boch Valentin H.Klaus Markus Fischer Daniel Prati 2014Journal of Plant Ecology2014,7,6:3
11Distal Pancreatectomy: Risk Factors for Surgical Failure in 302 Consecutive Cases显示文摘J?rg Kleeff Markus K. Diener Kaspar Z?graggen Ulf Hinz Markus Wagner Jeannine Bachmann J?rg Zehetner Michael W. Müller Helmut Friess Markus W. Büchler 2007Annals of Surgery2007,,4:3
12Hepatocellular Carcinoma: Current Management and Perspectives for the Future显示文摘Nuh N. Rahbari Arianeb Mehrabi Nathan M. Mollberg Sascha A. Müller Moritz Koch Markus W. Büchler Jürgen Weitz 2011Annals of Surgery2011,,3:3
13National Forest Inventories capture the multifunctionality of managed forests in Germany显示文摘Background:Forests perform various important ecosystem functions that contribute to ecosystem services.In many parts of the world,forest management has shifted from a focus on timber production to multi-purpose forestry,combining timber production with the supply of other forest ecosystem services.However,it is unclear which forest types provide which ecosystem services and to what extent forests primarily managed for timber already supply multiple ecosystem services.Based on a comprehensive dataset collected across 150 forest plots in three regions differing in management intensity and species composition,we develop models to predict the potential supply of 13 ecosystem services.We use those models to assess the level of multifunctionality of managed forests at the national level using national forest inventory data.Results:Looking at the potential supply of ecosystem services,we found trade-offs(e.g.between both bark beetle control or dung decomposition and both productivity or soil carbon stocks)as well as synergies(e.g.for temperature regulation,carbon storage and culturally interesting plants)across the 53 most dominant forest types in Germany.No single forest type provided all ecosystem services equally.Some ecosystem services showed comparable levels across forest types(e.g.decomposition or richness of saprotrophs),while others varied strongly,depending on forest structural attributes(e.g.phosphorous availability or cover of edible plants)or tree species composition(e.g.potential nitrification activity).Variability in potential supply of ecosystem services was only to a lesser extent driven by environmental conditions.However,the geographic variation in ecosystem function supply across Germany was closely linked with the distribution of main tree species.Conclusions:Our results show that forest multifunctionality is limited to subsets of ecosystem services.The importance of tree species composition highlights that a lack of multifunctionality at the stand level can be compensated by managing forests at the landscape level,when stands of complementary forest types are combined.These results imply that multi-purpose forestry should be based on a variety of forest types requiring coordinated planning across larger spatial scales.Nadja K.Simons María R.Felipe-Lucia Peter Schall Christian Ammer Jürgen Bauhus Nico Blüthgen Steffen Boch François Buscot Markus Fischer Kezia Goldmann Martin M.Gossner Falk Hänsel Kirsten Jung Peter Manning Thomas Nauss Yvonne Oelmann Rodica Pena Andrea Polle Swen C.Renner Michael Schloter Ingo Schöning Ernst-Detlef Schulze Emily F.Solly Elisabeth Sorkau Barbara Stempfhuber Tesfaye Wubet Jörg Müller Sebastian Seibold Wolfgang W.Weisser 2021Forest Ecosystems2021,8,1:2
14Device-assisted enteroscopy: A review of available techniques and upcoming new technologies显示文摘The advent of video capsule endoscopy into clinical routine more than 15 years ago led to a substantial change in the diagnostic approach to patients with suspected small bowel diseases, often indicating a deep enteroscopy procedure for diagnostical confirmation or endoscopic treatment. Device assisted enteroscopy was developed in 2001 and for the first time established a practicable, safe and effective method for evaluation of the small bowel.Currently with double-balloon enteroscopy, single-balloon enteroscopy and spiral enteroscopy three different platforms are available in clinical routine.Summarizing, double-balloon enteroscopy seems to offer the deepest insertion depth to the small bowel going hand in hand with the disadvantage of a longer procedural duration. Manual spiral enteroscopy seems to be a faster procedure but without reaching the depth of the DBE in currently available data. Finally,single-balloon enteroscopy seems to be the least complicated procedure to perform. Despite substantial improvements in the field of direct enteroscopy,even nowadays deep endoscopic access to the small bowel with all available methods is still a complex procedure, cumbersome and time-consuming and requires high endoscopic skills. This review will give an overview of the currently available techniques and will further discuss the role of the upcoming new technology of the motorized spiral enteroscopy(PowerSpiral).Markus Schneider Jörg Höllerich Torsten Beyna 2019World Journal of Gastroenterology2019,25,27:2
15Pancreatic Resection for M1 Pancreatic Ductal Adenocarcinoma显示文摘Shailesh V. Shrikhande MD J?rg Kleeff MD Carolin Reiser MD Jürgen Weitz MD Ulf Hinz MSc Irene Esposito MD Jan Schmidt MD Helmut Friess MD Markus W. Büchler MD 2007Annals of Surgical Oncology2007,,1:2
16Is Preoperative Chemotherapy Followed by Surgery the Appropriate Treatment for Signet Ring Cell Containing Adenocarcinomas of the Esophagogastric Junction and Stomach?显示文摘Ulrike Heger Susanne Blank Christiane Wiecha Rupert Langer Wilko Weichert Florian Lordick Thomas Bruckner Martin Dobritz Maria Burian Christoph Springfeld Lars Grenacher J?rg-Rüdiger Siewert Markus Büchler Katja Ott 2014Annals of Surgical Oncology2014,,5:2
17Association of low fetuin-A (AHSG) concentrations in serum with cardiovascular mortality in patients on dialysis: a cross-sectional study显示文摘Markus Ketteler Philipp Bongartz Ralf Westenfeld Joachim Ernst Wildberger Andreas Horst Mahnken Roland B?hm Thomas Metzger Christoph Wanner Willi Jahnen-Dechent Jürgen Floege 2003The Lancet2003,,9360:2
18Profound neutralization evasion and augmented host cell entry are hallmarks of the fast-spreading SARS-CoV-2 lineage XBB.1.5显示文摘Since late 2022, the share of infections caused by the SARS-CoV2 lineage XBB.1.5 has gradually increased in the United States,resulting in XBB.1.5 becoming the dominating SARS-CoV-2lineage in the United States and a similar trend is likely to soontake place also in European countries. However, information onthe virological properties of XBB.1.5 is scarce. Here, weconducted an initial virological assessment of the SARS-CoV-2XBB.1.5 lineage.Markus Hoffmann Prerna Arora Inga Nehlmeier Amy Kempf Anne Cossmann Sebastian R.Schulz Gema Morillas Ramos Luis A.Manthey Hans-Martin Jäck Georg M.N.Behrens Stefan Pöhlmann 2023Cellular & Molecular Immunology2023,20,4:2
19Allogeneic partially HLA-matched dendritic cells pulsed with autologous tumor cell lysate as a vaccine in metastatic renal cell cancer显示文摘Anne Fl?rcken Joachim Kopp Antje van Lessen Kamran Movassaghi Anna Takvorian Korinna J?hrens Markus M?bs Constanze Sch?nemann Birgit Sawitzki Karl Egerer Bernd D?rken Antonio Pezzutto J?rg Westermann 2013Human Vaccines & Immunotherapeutics2013,,:2
20Killing of p53-deficient hepatoma cells by parvovirus H-1 and chemotherapeutics requires promyelocytic leukemia protein显示文摘AIM: To evaluate the synergistic targeting and killing of human hepatocellular carcinoma (HCC) cells lacking p53 by the oncolytic autonomous parvovirus (PV) H-1 and chemotherapeutic agents and its dependence on functional promyelocytic leukemia protein (PML). METHODS: The role of p53 and PML in regulating cy-totoxicity and gene transfer mediated by wild-type (wt) PV H-1 were explored in two pairs of isogenic human hepatoma cell lines with different p53 status. Further-more,H-1 PV infection was combined with cytostatic drug treatment. RESULTS: While the HCC cells with different p53 status studied were all susceptible to H-1 PV-induced apoptosis,the cytotoxicity of H-1 PV was morepronounced in p53-negative than in p53-positive cells. Apoptosis rates in p53-negative cell lines treated by genotoxic drugs were further enhanced by a treatment with H-1 PV. In flow cytometric analyses,H-1 PV infection resulted in a reduction of the mitochondrial transmembrane potential. In addition,H-1 PV cells showed a significant increase in PML expression. Knocking down PML expression resulted in a striking reduction of the level of H-1 PV infected tumor cell death. CONCLUSION: H-1 PV is a suitable agent to circumvent the resistance of p53-negative HCC cells to genotoxic agents,and it enhances the apoptotic process which is dependent on functional PML. Thus,H-1 PV and its oncolytic vector derivatives may be considered as therapeutic options for HCC,particularly for p53-negative tumors.Maike Sieben Kerstin Herzer Maja Zeidler Vera Heinrichs Barbara Leuchs Martin Schuler Jan J Cornelis Peter R Galle Jean Rommelaere Markus Moehler 2008World Journal of Gastroenterology2008,14,24:2
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