Abstract:
:The mechanisms by which hydrogen peroxide and, for comparison, 4-beta-phorbol-12-myristate-13-acetate (PMA) stimulate release of radiolabeled arachidonic acid (14C-AA) in cultured intestinal epithelial cells (INT 407) were investigated. Both hydrogen peroxide and PMA caused a rapid (3 min) and dose-related intracellular release of free 14C-AA, followed by a dose- and time-dependent release of 14C-AA into the extracellular medium, but hydrogen peroxide was about 50,000 times less effective than PMA in releasing 14C-AA. No 14C-AA was released on stimulation with 4-alpha-phorbol-12,13-di-decanoate (PDD), a phorbol ester that does not activate protein kinase C. The 14C-AA release was reduced by the phospholipase A2 inhibitors nordihydroguaiaretic acid and 4-bromophenacyl bromide and by the calmodulin/protein kinase C inhibitor trifluoperazine and the protein kinase C inhibitor 1-(5-isoquinolinylsulfonyl)-2-methylpiperazine (H-7). However, H-7 was less effective than the other inhibitors in reducing the hydrogen peroxide-stimulated 14C-AA release. The hydrogen peroxide-stimulated, but not the PMA-stimulated, rapid (3 min) 14C-AA release was associated with an increased influx of extracellular calcium. Stimulation of the cells with PMA resulted in phosphorylation of a cellular protein of about 32 kDa, whereas no phosphorylation of this protein was detected after stimulation with hydrogen peroxide. Taken together, these findings indicate that (i) both PMA and hydrogen peroxide may stimulate phospholipase A2-mediated AA release from human intestinal epithelial cells; (ii) this stimulation is brought about via protein kinase C and calmodulin-mediated events; (iii) PMA-stimulated 14C-AA release is associated with phosphorylation of a 32-kDa protein, possibly lipocortin, whereas the hydrogen peroxide-stimulated release is not; and (iv) calmodulin is more important for the hydrogen peroxide-stimulated 14C-AA release than is protein kinase C. The possibility that hydrogen peroxide-evoked AA release may contribute to the mucosal abnormality in Crohn's disease is discussed.
journal_name
Scand J Gastroenteroljournal_title
Scandinavian journal of gastroenterologyauthors
Gustafson C,Lindahl M,Tagesson Cdoi
10.3109/00365529109025037subject
Has Abstractpub_date
1991-03-01 00:00:00pages
237-47issue
3eissn
0036-5521issn
1502-7708journal_volume
26pub_type
杂志文章abstract::We have evaluated the correlation between vasoactive intestinal polypeptide (VIP) plasma concentration and severity of gastroesophageal reflux in patients with Barrett's esophagus and the possible differences in the VIP values of these patients compared with healthy volunteers. We also evaluated the relation between V...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529108998582
更新日期:1991-05-01 00:00:00
abstract::A secretin-cholecystokinin test was performed in 103 patients, representing both normal and reduced exocrine pancreatic function. The duodenum was intubated with a triple-lumen tube. The gastric and duodenal contents were aspirated separately and sampled in 10-min periods. An inert, water-soluble marker (58Co-vitamin ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 临床试验,杂志文章
doi:10.3109/00365528509089691
更新日期:1985-05-01 00:00:00
abstract:OBJECTIVE:Few data are available on the relevance of adalimumab (ADA) trough serum levels and anti-ADA antibodies (AAA) during long-term follow-up of patients with Crohn's Disease (CD), and their association with disease outcome. In this study, our aim was to assess ADA trough serum levels and the presence of AAA accor...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365521.2016.1157894
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVE:Tricyclic antidepressants (TCAs) are well established in the treatment of patients with irritable bowel syndrome (IBS). The effects are believed to be linked to serotoninergic antinociceptive properties, but data on the antinociceptive effects of various TCAs with variable serotoninergic and non-serotoninergi...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520902767272
更新日期:2009-01-01 00:00:00
abstract::The biologic gastrin activity in serum from 14 patients with the Zollinger-Ellison syndrome was assessed by the stimulation of histamine release and acid secretion from the isolated vascularly perfused rat stomach and compared with the immunologic activity as determined by radioimmunoassay using an antibody directed t...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529209028135
更新日期:1992-12-01 00:00:00
abstract:OBJECTIVE:Ischemia-reperfusion injury is associated with a high rate of primary organ dysfunction and thereby contributes substantially to morbidity and mortality in the course of liver transplantation. In the present study, the impact of metabolic preconditioning with fructose on ischemia-reperfusion injury in the iso...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365521.2012.741618
更新日期:2013-02-01 00:00:00
abstract:BACKGROUND:Biliary complications are a common problem in liver transplantation (LT). METHODS:We reviewed 100 consecutive adult LTs, including 10 retransplantations. Ten patients who survived for less than 1 month or developed hepatic artery thrombosis were excluded. Biliobiliary anastomosis was performed with a T-tube...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529609006773
更新日期:1996-05-01 00:00:00
abstract:BACKGROUND:Irritable bowel syndrome (IBS) is characterized by chronic abdominal symptoms such as pain, discomfort, and altered bowel habits. A subset of IBS patients, denoted as post-infectious IBS (PI-IBS) patients, develop symptoms after an enteric infection. Distinct abnormalities in the gut mucosa, including mucosa...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365521.2014.926982
更新日期:2014-09-01 00:00:00
abstract::Gastric microcirculatory changes were studied by means of hydrogen clearance techniques in conscious cats during histamine stimulation. A considerable increase of corpus mucosa flow occurred, whereas a less substantial increase of antrum mucosa flow was observed during stimulation with histamine at 2 micrograms/kg/min...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528109181006
更新日期:1981-01-01 00:00:00
abstract::The association between macroamylasaemia and coeliac disease in Down syndrome with multiple autoimmune abnormalities has never been reported. A 40-year-old woman with a 15-year history of immunoglobulin A and immunoglobulin M hypergammaglobulinaemia, chronic diarrhoea, persistent mild aspartate aminotransferase (AST) ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520310000933
更新日期:2003-04-01 00:00:00
abstract:OBJECTIVE:Treatment with 5-aminosalicylic acid (5-ASA) derivatives is one of the main principles in the therapy of uncomplicated mild to moderate inflammatory bowel diseases (IBD). The beneficial effect of 5-ASA in the treatment of IBD is attributed to its anti-inflammatory and anti-oxidant properties within the inflam...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520510015854
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVES:Systematic screening for chronic hepatitis B and C does not yet exist in Germany. Therefore, the implementation of a screening approach within a preventive medical examination performed by primary care physicians ('Check-Up 35+') was evaluated in a recent prospective multicenter study. The present analysis e...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365521.2017.1390599
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Ultrasound (US)-guided percutaneous acetic acid injection therapy (PAIT) is effective for patients with hepatocellular carcinoma (HCC). This study aimed to determine the occurrence and predictive value of persistent intra-tumoral retention of acetic acid after PAIT. METHODS:We prospectively studied 60 (52 M...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520310008269
更新日期:2004-02-01 00:00:00
abstract::The interaction between lysolecithin and mucosal cells in the distal ileum has been studied. Using a rat experimental model, we determined the intestinal permeability to fluorescent dextran 3000 after exposure to different amounts of lysolecithin. At pH 7.3, lysolecithin, 10 mg/ml, significantly enhanced the transmura...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528109181820
更新日期:1981-01-01 00:00:00
abstract:BACKGROUND:Growth factors such as epidermal growth factor (EGF) and transforming growth factor alpha (TGF alpha) have been shown to share common receptor (EGFR) and to accelerate ulcer healing due to stimulation of cell proliferation, but the time sequence of expression of EGF and TGF alpha during ulcer healing has not...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529709025056
更新日期:1997-01-01 00:00:00
abstract::To obtain information on possible determinants of weight loss after horizontal gastroplasty, pouch emptying was prospectively investigated in 27 morbidly obese patients. A scintigraphic method was used. Examinations were carried out every 6 months until 2 years after surgery. Pouch emptying was described by means of d...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528509089272
更新日期:1985-12-01 00:00:00
abstract::The positional specificity of the phospholipase A in human gallbladder epithelium was studied by using biosynthetically radioabeled diacylphosphoglycerides as substrates. Diacylphosphoglyceride in 14C-palmitic acid-labeled, autoclaved E.coli was hydrolyzed under the formation of monoacylphosphoglyceride and fatty acid...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365527809181915
更新日期:1978-01-01 00:00:00
abstract:BACKGROUND:Non-invasive diagnostic tools to evaluate the severity of acute, radiation-induced proctitis are not readily available. The faecal excretion of eight markers of gut inflammation was therefore examined. Five proteins and three lipid derivates were analysed in sequential stool samples taken before and during r...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520410003614
更新日期:2004-11-01 00:00:00
abstract:BACKGROUND:Primary adenocarcinoma of the duodenum is an uncommon clinical entity. It has been associated with a dismal prognosis because it is rare and produces no distinctive symptoms until late in its course. CASE SUMMARY:A 68-year-old man presented with a 6-month history of epigastralgia, anorexia, and progressive ...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529409094865
更新日期:1994-10-01 00:00:00
abstract::The effect of vasoactive intestinal polypeptide (VIP), enkephalin, neuropeptide Y, gastrin, cholecystokinin, neurotensin, somatostatin, and thyrotropin-releasing hormone on the lower esophageal sphincter pressure (LESP) was studied in anesthetized pigs. The peptides were infused into the arterial supply of the lower e...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528609011114
更新日期:1986-08-01 00:00:00
abstract:OBJECTIVE:Bile acids are derived from cholesterol and are potent physiological laxatives. The aim of this study was to investigate whether bile acid synthesis is altered in constipation. MATERIAL AND METHODS:Female patients with constipation (23 IBS-C, 4 functional constipation (FC)) were studied and compared with non...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520802321212
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE:Activating mutations in the GUCY2C gene, which encodes the epithelial receptor guanylate cyclase C, cause diarrhea due to increased loss of sodium chloride to the intestinal lumen. Patients with familial GUCY2C diarrhea syndrome (FGDS) are predisposed to inflammatory bowel disease (IBD). We investigated wheth...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365521.2018.1521867
更新日期:2018-01-01 00:00:00
abstract::Bile duct hamartomas, also known as von Meyenburg complexes, are benign liver malformations which usually present as multiple small nodules scattered in both lobes of the liver. We report a unique case of bile duct hamartoma. An asymptomatic 30-year-old man who had a solitary cystic lesion underwent partial hepatectom...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520510023387
更新日期:2005-11-01 00:00:00
abstract::To evaluate the usefulness of Courvoisier's sign in ultrasonography, gallbladder size in patients with common hepatic duct dilatation was measured using the ellipsoid method during ultrasonographic examination. During a 6-month period 24 patients with malignant obstructions (6 with carcinoma of the ampulla of Vater, 9...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365529409090478
更新日期:1994-03-01 00:00:00
abstract:OBJECTIVE:Many patients with nonerosive reflux disease (NERD) have insufficient relief on proton pump inhibitors (PPIs). Some patients have a hypersensitive esophagus and may respond to transient receptor potential vanilloid 1 (TRPV1) antagonists. Aim. To investigate the effect of the TRPV1 antagonist AZD1386 on experi...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章,随机对照试验
doi:10.3109/00365521.2012.758769
更新日期:2013-03-01 00:00:00
abstract::A case of a Borrmann type 2 advanced gastric cancer with endocrine differentiation is described. Histologically, the cancer was either composed of cells arranged in a tubular pattern or formed solid nests of various sizes. The tubular pattern was composed of a moderately differentiated tubular adenocarcinoma. The hist...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520410005775
更新日期:2004-08-01 00:00:00
abstract::Biopsy specimens from the antral and body part of the stomach were studied for a range of marker enzymes in 11 patients with superficial gastritis, 9 patients with atrophic gastritis, and 31 Billroth-II-resected patients and compared with activities found in controls with normal gastric mucosa. In the antral part of t...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528608996452
更新日期:1986-12-01 00:00:00
abstract::There is very little information in the medical literature on fibrotic esophageal lesions. These lesions do not appear to be malignant, but are recalcitrant to different treatments including removal, and the use of esophageal stents does not discourage the lesion from continuing to grow. The cause of these lesions rem...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365520500469784
更新日期:2006-06-01 00:00:00
abstract:BACKGROUND:Colonic permeability was studied in vitro in patients subjected to colectomy because of ulcerative colitis and in control patients undergoing colonic resections for cancer. METHODS:The mucosal layer from fresh colonic segments was stripped and mounted in Ussing diffusion chambers containing modified Krebs b...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.1080/00365529850171701
更新日期:1998-07-01 00:00:00
abstract::During prolonged culture (7-40 passages assayed) DNA distribution was constant in IVT-negative lines with FPC genotype and in IVT-negative lines without any known colon cancer genotype, whereas the DNA histograms of the IVT-positive lines with HNPCC genotype showed a marked change. The DNA index (DI) of greater than 1...
journal_title:Scandinavian journal of gastroenterology
pub_type: 杂志文章
doi:10.3109/00365528809090770
更新日期:1988-09-01 00:00:00