Abstract：
BACKGROUND:Little is known about the similarities and differences in the clogging process of biliary and pancreatic stents. The aim of the study was to elucidate this process using scanning electron microscopy. MATERIALS AND METHODS:Scanning electron microscopy was performed in a consecutive series of 18 biliary and 10 pancreatic endoprostheses. The indication for stenting in the 18 patients (13 men, 5 women) with biliary stents was malignancy (n = 11), benign bile duct stenosis (n = 5), and biliary obstruction by bile duct stones (n = 2). The indication for stenting in the 10 patients (8 men, 2 women) with pancreatic stents was chronic pancreatitis with or without stenosis of the pancreatic duct. RESULTS:The scanning electron microscopy study revealed a quite uniform pattern of the clogging material in biliary and pancreatic stents. The clogging material seemed to adhere to the inner stent surface by numerous tiny threads. The clogging material itself was also stabilized by tiny threads. CONCLUSIONS:The occurrence of the tiny threads constitutes the central point in the clogging process in biliary and pancreatic stents. Inhibiting the formation of these threads or at least preventing adhesion to the inner stent surface might be the best option to improve stent patency.
journal_name
Z Gastroenteroljournal_title
Zeitschrift fur Gastroenterologieauthors
Weickert U,Zimmerling S,Eickhoff A,Riemann JF,Reiss Gdoi
10.1055/s-2008-1027926subject
Has Abstractpub_date
2009-04-01 00:00:00pages
347-50issue
4eissn
0044-2771issn
1439-7803journal_volume
47pub_type
杂志文章abstract：:A case report ist given on a 54-year-old patient with the so called lipid island (xanthelasma) in the duodenal mucosa. Xanthelasmas are very rarely located in the duodenal mucosa. The diagnosis and differential diagnosis of this entity are reported. The relevance of histochemistry and immunohistochemistry for differen...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1995-08-01 00:00:00
abstract：:An inhibition of acetylcholinesterase activity by ranitidine and cimetidine as described by Hansen and Bertl (Z. Gastroenterol. 21: 164, 1983; Arzneimittelforsch. 33: 161, 1983) could only be confirmed by use of 1000-fold higher concentrations of the H2-antagonists (ID50 for ranitidine: 3,2 X 10(-4) M, for cimetidine:...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1984-03-01 00:00:00
abstract：:The intercellular adhesion molecule 1 (ICAM-1, CD54) and the lymphocyte associated antigen 3 (LFA-3, CD58) have been found in soluble form (sCD54 and sCD58) in human sera. Data concerning their role in chronic liver disease and their usefulness in disease monitoring are contradictory. We addressed the question whether...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1997-06-01 00:00:00
abstract：:We report on the case of a segmentally emphasised, ulcerous chronic haemorrhagic colitis with the development of granulation tissue und scarred fibrosis with consecutive resulting stenosis of the colon. A 49-year-old male patient was infected with enterohaemorrhagic Escherichia coli bacteria during the EHEC-epidemic i...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/s-0031-1299059
更新日期：2012-05-01 00:00:00
abstract：:Diagnosis of oesophageal motility disorders has been well established for many years now, although circadian gastrointestinal motility is still purely understood. So far, high-resolution manometry (HRM) is only available for short-term measurement in clinical practice to evaluate simultaneous pressure conditions throu...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/s-0042-105653
更新日期：2016-09-01 00:00:00
abstract：BACKGROUND:Changes in gastric and small bowel motility are a common clinical problem. Currently diagnostic options are limited because each method harbors certain disadvantages. It has been shown that the high-resolution three-dimensional magnetic detector system 3D-MAGMA is capable of reliably measuring gastric and sm...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/s-0042-100285
更新日期：2016-06-01 00:00:00
abstract：:In recent years several studies have been performed to improve the chemotherapy of metastatic gastric carcinoma. It is now established that combined chemotherapy for example with 5-Fluorouracil, adriamycin and mitomycin C or nitrosourea derivatives is superior to monotherapy with 5-Fluorouracil. With this combined che...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1982-12-01 00:00:00
abstract：:For decades, methylene blue has been used in gastrointestinal endoscopy as an absorbing dye, it was, however, not approved for that purpose and has now been withdrawn from the market. A possible substitute is toluidine blue, an acidophilic, metachromatic dye that selectively stains cell nuclei; accordingly, since 2007...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/s-0028-1110032
更新日期：2010-09-01 00:00:00
abstract：:Pancreatic cancer is one of the most lethal cancer diseases. For years, gemcitabine has been the standard of care and the only therapeutic option in patients with metastatic pancreatic cancer. Within the last years, new combination therapies have been established for first-line treatment, which significantly improve o...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/a-0581-5640
更新日期：2018-06-01 00:00:00
abstract：:Gastrointestinal stromal tumours (GIST) occur mostly as sporadic solitary lesions involving the tubular GI tract and are only rarely associated with other benign or malignant neoplasms or occur as part of a multi-neoplastic disease as in the setting of Carney's triad and von Recklinghausen's disease. We analysed a tot...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 临床试验,杂志文章
doi：10.1055/s-2005-858378
更新日期：2005-09-01 00:00:00
abstract：:The application of Penicillamine (750 mg per day) for one year resulted in the expected increase of urinary copper excretion (8-10 fold). The increase of Zinc excretion was only moderate (2 fold). The application of Penicillamine did not influence the excretion of Ca, Mg and Fe. We did not find a decrease of Zinc cont...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1986-03-01 00:00:00
abstract：:Laboratory diagnostics efficiently applied is of decisive importance for a great deal of questions in spite of the technical and endoscopic methods which are available today in the field of examinations. By means of a screening programme consisting of ALAT, gamma-GT, ChE at a sensitivity of > 90% alterations in both t...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章,评审
doi：
更新日期：1993-02-01 00:00:00
abstract：BACKGROUND:Achalasia in childhood is rare, also the etiology and the pathogenesis of the early onset ort he disease is practically unknown. Little is known about the neuropathological changes in structure of the esophageal wall in non-hereditary, sporadic achalasia in children and ist differentiation to that in adults....
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章,评审
doi：10.1055/s-2007-963649
更新日期：2007-12-01 00:00:00
abstract：:Until 1979 there were explored 192 surgical specimens from patients with Crohn's disease at the Institute of Pathology of the University of Hamburg. For the present study there was a follow-up examination of 161 specimens. Among these Crohn's specimens we found five (3.1%) simultaneously existing ("Crohn-associated") ...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1980-11-01 00:00:00
abstract：:A 34-year-old Turkish woman presented with septic fever, sweats, arthralgia, and abdominal pain. Further examination revealed generalized lymphadenopathy, hepatosplenomegaly, pancytopenia, and multiple caseous granulomas. Microbiological diagnosis revealed Brucella melitensis type 3 as causative agent. This case repor...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1993-11-01 00:00:00
abstract：:The mechanism of the diarrheogenic effect of bile acids and fatty acids is incompletely understood. In order to study their effects on motility we tested sodium deoxycholate and sodium ricinoleate in their actions on the spontaneous mechanical and myoelectrical activity of the isolated circular muscle of the cat colon...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1983-08-01 00:00:00
abstract：:Probiotics are defined as living micro-organisms which, when administered in large amounts, confer a health benefit on the host. The use of probiotics in the therapy of infectious bowel diseases as well as maintaining remission of ulcerative colitis and in pouchitis is evidence-based. Also, in several studies proof co...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章,meta分析
doi：10.1055/s-2004-813934
更新日期：2005-05-01 00:00:00
abstract：:Modern metabolic research in hepatology employs non-invasive techniques of the whole organism, and it includes studying the intact organ. Following recent decades of efforts in culturing isolated cells and studying their properties separately, it has become clear that the spatiotemporal organisation of different cell ...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章,评审
doi：10.1055/s-0031-1273392
更新日期：2011-06-01 00:00:00
abstract：BACKGROUND: More and more gastroenterologists are not satisfied with their working conditions and run the risk of developing burnout symptoms. Little is known about the job satisfaction and burnout risk among physicians working in endoscopy units in Germany. This study examines the risk of burnout and job satisfaction ...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/a-1176-2344
更新日期：2020-10-01 00:00:00
abstract：:After nine weeks of combination therapy with recombinant interferon-alpha and ribavirin for chronic hepatitis C a 62-year old woman complained of a dry cough and exertional dyspnea. An elevated erythrocyte sedimentation rate was noticed. Prior to treatment chest X-rays and physical examination revealed no pulmonary ab...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/s-2002-33879
更新日期：2002-09-01 00:00:00
abstract：:The metabolism of ethanol to acetaldehyde in the liver proceeds via alcohol dehydrogenase (ADH) and the microsomal ethanol-oxidizing system (MOS), whereas catalase plays no significant role. ADH is an enzyme of the cytosol, requires NAD+ as cofactor and exhibits a pH optimum in the alkaline range. The Km of ADH is abo...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章,评审
doi：
更新日期：1988-10-01 00:00:00
abstract：:We studied the effect of two peptides, the intracellular Ca2(+)-mobilizing caerulein and the cAMP-mediated secretin, and also the phosphodiesterase inhibitor caffeine on pancreatic secretion and growth in newborn rats. To investigate the secretory response of these substances, and to construct dose-response curves 10-...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：:We have assessed the effect of omeprazole (30 mg daily) on gastric acid secretion as well as on basal hormone levels (fasting gastrin; TSH, T3, T4, TBG; insulin, glucagon, C-peptide; prolactin, testosterone, 17-beta-oestradiol, dihydroepiandrosterone, cortisol and PTH) in 8 healthy volunteers before and after a 28 day...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1984-05-01 00:00:00
abstract：:Pneumatosis intestinalis (PI) is identified as the accumulation of gas within the wall of the small or large intestine. It was first described by Du Vernoi in 1783. The pathogenesis is supposed to be multifactorial. It is assumed that there are 3 paths of disease development: mechanical, bacterial and biochemical. Adu...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/s-0031-1281680
更新日期：2013-11-01 00:00:00
abstract：:Between 1981 and 1987 5434 patients were studied by ERCP in Allgemeines Krankenhaus Hamburg-Barmbeck. 26 (i.e. 0.43%) suffered from Mirizze syndrome with the triad of cholelithiasis, cholecystitis and obstructive biliary disease. They were classified in four different types according to the variable localisation and o...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：:Mild anemia can occasionally be observed during viral hepatitis, but severe hemolysis has previously only been reported in a few patients with glucose-6-phosphate dehydrogenase (G6PD) deficiency. We report a case of massive acute hemolysis associated with an acute hepatitis A in a 39-year-old woman in the absence of G...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1997-07-01 00:00:00
abstract：:Cystic fibrosis (CF) is the most common autosomal recessive disease in the Caucasian population. The primary cellular defect, the reduced expression of the cystic fibrosis transmembrane conductance regulator (CFTR), leading to a chloride secretory defect, is present in all epithelial cells of endodermal and mesodermal...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章,评审
doi：
更新日期：1999-08-01 00:00:00
abstract：:A 27-year-old female patient with partial Alagille's syndrome (hypoplasia of the intrahepatic bile ducts, typical facial dysmorphism and skeletal anomalies) developed a marked cholestasis (total bilirubin 59 mg/dl), decrease of liver synthesis tests and ascites four weeks after gynecological surgery with general anest...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：
更新日期：1996-12-01 00:00:00
abstract：:Patients with porphyria cutanea tarda (PCT) develop hepatocellular carcinoma as a late consequence. Pre-loading of C57BL/10ScSn mice with iron greatly sensitizes them to the induction of hepatic porphyria caused by hexachlorobenzene (HCB). HCB will also cause liver tumors in experimental animals. Elevated liver iron s...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章
doi：10.1055/s-2001-15723
更新日期：2001-06-01 00:00:00
abstract：:Non-resectable cholangiocarcinoma and gallbladder carcinoma have a poor prognosis. In addition to the general aspects of "best supportive care", biliary drainage is an important part of the palliative treatment of patients with malignant biliary stenosis. Photodynamic therapy has led to an improved median survival in ...
journal_title：Zeitschrift fur Gastroenterologie
pub_type： 杂志文章,评审
doi：10.1055/s-2006-926869
更新日期：2006-07-01 00:00:00
