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219篇 您的检索式:作者名="CLAUS G"
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1Sporadic versus hereditary gastrinomas of the duodenum and pancreas: Distinct clinico-pathological and epidemiological features显示文摘Gastrinomas are defined as gastrin secreting tumors that are associated with Zollinger-Ellison syndrome (ZES). ZES is characterized by elevated fasting gastrin serum levels, positive secretin stimulation test and clinical symptoms such as recurrent peptic ulcer disease, gastroesophageal re?ux disease and occasional diarrhea. Genetically, nonhereditary (sporadic) gastrinomas are distinguished from hereditary gastrinomas, which are associated with multiple endocrine neoplasia type 1 (MEN1) syndrome. In general, duodenal gastrinomas are small and solitary if they are sporadic and multiple as well as hereditary. The sporadic gastrinomas occur in the duodenum or in the pancreas while the hereditary gastrinomas almost all occur in the duodenum. Our series of 77 sporadic duodenal neuroendocrine tumors (NETs) includes 18 patients (23.4%) with gastrinomas and ZES. Of 535 sporadic NETs in the pancreas collected from the NET archives of the departments of pathology in Zürich, Switzerland, and Kiel, Germany, 24 patients (4.5%) suffered from sporadic pancreatic gastrinomas and ZES. These NETs have to be distinguished fromtumors with immunohistochemical positivity for gastrin but without evidence of ZES. An additional 19 patients suffered from MEN1 and ZES. These patients showed exclusively duodenal gastrinomas, but not pancreatic gastrinomas. The prognosis of sporadic and MEN1- associated duodenal gastrinomas is better than that of pancreatic gastrinomas, since they progress slowly to liver metastasis. In summary, sporadic and MEN1- associated gastrinomas in the duodenum and pancreas show different clinico-pathological and genetic features. The incidence of sporadic duodenal gastrin-producing tumors is increasing, possibly due to optimized diagnostic procedures. In contrast, pancreatic MEN1- associated gastrinomas seem to be extremely rare. A considerable subset of tumors with immunohistochemical expression of gastrin but without evidence of ZES should be designated as functionally inactive NETs expressing gastrin, but not as gastrinomas.Martin Anlauf Nele Garbrecht Tobias Henopp Anja Schmitt Regina Schlenger Andreas Raffel Markus Krausch Oliver Gimm Claus F Eisenberger Wolfram T Knoefel Henning Dralle Paul Komminoth Philipp U Heitz Aurel Perren Günter Klppel 2006World Journal of Gastroenterology2006,12,34:7
2Analysis of monocyte chemotactic protein-1 gene polymorphism in patients with spontaneous bacterial peritonitis显示文摘AIM:To investigate a genetic polymorphism of the monocyte chemotactic protein-1 (MCP-1 ) gene in patients with spontaneous bacterial peritonitis (SBP).METHODS:MCP-1 genotyping was performed in 23 patients with SBP and 83 cirrhotic control patients with non-infected ascites.RESULTS:The frequency of carriers of the G-allele was lower in SBP patients but this difference did not reach statistical significance. However,in the subgroup of patients with alcoholic cirrhosis (n=80),carriers of the G-allele were significantly less frequent in SBP-patients (38.1%) than in cirrhotic controls (67.8%,P=0.021). CONCLUSION:In patients with alcoholic liver cirrhosis,the-2518 MCP-1 genotype AA is a risk factor for the development of SBP.Erwin Gbele Marcus Mhlbauer Hartwig Paulo Monika Johann Christin Meltzer Franz Leidl Norbert Wodarz Reiner Wiest Jrgen Schlmerich Claus Hellerbrand 2009World Journal of Gastroenterology2009,15,44:7
3Adiponectin 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
4Role of HSP-90 for increased nNOS-mediated vasodilation in mesenteric arteries in portal hypertension显示文摘AIM:To explore the role of heat shock protein-90 (HSP-90) for nitrergic vasorelaxation in the splanchnic circulation in rats with and without portal hypertension. METHODS: Neuronal nitric oxide synthase (nNOS) and HSP-90 were analyzed by immunofluorescence, western blotting and co-immunoprecipitation in the mesenteric vasculature and isolated nerves of portal-vein-ligated (PVL) rats and sham operated rats. In vitro perfused de-endothelialized mesenteric arterial vasculature was preconstricted with norepinephrine (EC80) and tested for nNOS-mediated vasorelaxation by periarterial nerve stimulation (PNS, 2-12 Hz, 45V) before and after incubation with geldanamycin (specific inhibitor of HSP-90 signalling, 3 μg/mL) or L-NAME (non-specific NOSblocker, 10-4 mol/L). RESULTS: nNOS and HSP-90 expression was significantly increased in mesenteric nerves from PVL as compared to sham rats. Moreover, nNOS and HSP-90 were visualized in mesenteric nerves by immunofluorescence and immunoprecipitation of nNOS co-immunoprecitated HSP-90 in sham and PVL rats. PNS induced a frequencydependent vasorelaxation which was more pronounced in PVL as compared to sham rats. L-NAME and geldanamycin markedly reduced nNOS-mediated vasorelaxation abrogating differences between the study groups. The effect of L-NAME and geldanamycin on nNOS-mediated vasorelaxation was significantly greater in PVL than in sham animals. However, no difference in magnitude of effect between L-NAME and geldanamycin was noted. CONCLUSION: HSP-90 acts as a signalling mediator of nNOS-dependent nerve mediated vascular responses in mesenteric arteries, and the increased nitrergic vasorelaxation observed in portal hypertension is mediated largely by HSP-90.Lukas Moleda Lars Jurzik Matthias Froh Erwin Gbele Claus Hellerbrand Rainer H Straub Jürgen Schlmerich Reiner Wiest 2010World Journal of Gastroenterology2010,16,15:4
5Preoperative chemoradiotherapy and postoperative chemotherapy with fluorouracil and oxaliplatin versus fluorouracil alone in locally advanced rectal cancer: initial results of the German CAO/ARO/AIO-04 randomised phase 3 trial显示文摘Claus R?del Torsten Liersch Heinz Becker Rainer Fietkau Werner Hohenberger Torsten Hothorn Ullrich Graeven Dirk Arnold Marga Lang-Welzenbach Hans-Rudolf Raab Heiko Sülberg Christian Wittekind Sergej Potapov Ludger Staib Clemens Hess Karin Weigang-K?hler G 2012Lancet Oncology2012,,7:2
6Sensitivity and specificity of commonly available bladder tumor markers versus cytology: results of a comprehensive literature review and meta-analyses显示文摘Yair Lotan Claus G Roehrborn 2003Urology2003,,1:2
7SPQD14120800011178显示文摘Kordes Claus Sawitza Iris G?tze Silke Herebian Diran H?ussinger Dieter 2014Journal of Clinical Investigation2014,,12:2
8Efficacy and safety of a dual inhibitor of 5-alpha-reductase types 1 and 2(dutasteride) in men with benign prostatic hyperplasia显示文摘Roehrborn Claus G Boyle Peter 2002Urology2002,60,3:1
9Structural Control: past, present, and future显示文摘Housner G Bergman L Gaughey T Chassiakos A Claus R Masri S Skellton R Soong T Spencer B Yao J 1997Journal of Engineering Mechanics (ASCE)1997,123,:1
10A role for the pseudokinaseHER3 in the acquired resistance against EGFR- andHER2-directed targeted therapy 显示文摘Claus J Patel G Ng T 2014Biochem Soc Trans2014,42,4:1
11Efficacy and safety of dutasteride in the four-year treatment of men with benign prostatic hyperplasia显示文摘Roehrborn Claus G Marks Leonard S Fenter Tom 2004Urology2004,63,4:1
12Benign prostate hyperplasia:an overview 显示文摘Claus G Roehrbom MD 2005Rev Urol2005,7,9:1
13Angiographic CT in cerebrovascular stenting显示文摘Benndorf G Strother CM Claus B 2005AJNR2005,26,7:1
14Effects of feeding fat-coated butyrate on mucosal morphology and function in the small intestine of the pig显示文摘 Günthner D Letzguβ H 2007Journal of Animal Physiology and Animal Nutrition2007,91,78:1
15Degradation of microcystin in sediments at oxic and anoxic,denitrifying conditions显示文摘THOMAS H NIELS O G J CLAUS J 2003Water Research2003,37,:1
16Low-fat,high - moisture frankfurters :Effects of temperature and water during extended mixing 显示文摘SYLVIA S F CLAUS J R MARRIOTT N G 1994Journal of Food Science1994,59,5:1
17Strain and strain rate imaging: a new clinical approach to quantifying regional myocardial function显示文摘Sutherland GR Di Salvo G Claus P 2004J Am Soc Echocardiogr2004,17,7:1
18Pretreatment evaluation of prostate cancer: role of MR imaging and 1H MR spectroscopy显示文摘CLAUS F G HRICAK H HATTERY R R 2004Radiographics2004,24,1:1
19DSS induced colitis increases portal LPS levels and enhances hepatic inflammation and fibrogenesis in experimental NASH显示文摘Erwin G?bele Karin Dostert Claudia Hofmann Reiner Wiest Jürgen Sch?lmerich Claus Hellerbrand Florian Obermeier 2011Journal of Hepatology2011,,6:1
20Structural Control: Past, Present, and Future显示文摘HOUSNER G W BERGMAN L A CAUGHEY T K CHASSIAKOS A G CLAUS R O MASRI S F SKELTON R E SOONG T T SPENCER B F YAO J T P 1997Journal of Engineering Mechanics1997,123,9:1
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